./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/memset_using_uint64_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 9ff439c9da308e48e314eaeb6f620d0560f5430b3c601570b5afd8d635a5b965 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 22:20:40,805 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 22:20:40,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 22:20:40,854 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 22:20:40,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 22:20:40,856 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 22:20:40,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 22:20:40,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 22:20:40,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 22:20:40,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 22:20:40,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 22:20:40,866 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 22:20:40,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 22:20:40,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 22:20:40,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 22:20:40,869 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 22:20:40,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 22:20:40,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 22:20:40,871 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 22:20:40,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 22:20:40,877 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 22:20:40,878 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 22:20:40,879 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 22:20:40,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 22:20:40,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 22:20:40,886 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 22:20:40,889 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 22:20:40,890 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 22:20:40,891 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 22:20:40,892 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 22:20:40,893 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 22:20:40,893 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 22:20:40,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 22:20:40,895 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 22:20:40,896 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 22:20:40,897 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 22:20:40,897 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 22:20:40,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 22:20:40,898 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 22:20:40,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 22:20:40,899 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 22:20:40,901 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 22:20:40,902 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 22:20:40,929 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 22:20:40,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 22:20:40,930 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 22:20:40,930 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 22:20:40,931 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 22:20:40,931 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 22:20:40,932 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 22:20:40,932 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 22:20:40,932 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 22:20:40,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 22:20:40,933 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 22:20:40,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 22:20:40,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 22:20:40,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 22:20:40,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 22:20:40,934 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 22:20:40,934 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 22:20:40,935 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 22:20:40,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 22:20:40,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 22:20:40,935 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 22:20:40,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 22:20:40,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 22:20:40,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 22:20:40,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 22:20:40,937 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 22:20:40,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 22:20:40,937 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 22:20:40,938 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 22:20:40,938 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 22:20:40,938 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ff439c9da308e48e314eaeb6f620d0560f5430b3c601570b5afd8d635a5b965 [2022-07-19 22:20:41,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 22:20:41,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 22:20:41,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 22:20:41,203 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 22:20:41,204 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 22:20:41,205 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i [2022-07-19 22:20:41,285 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a0a812f3/5ea80fa50b0f44759eda69aa39f9b531/FLAG6b5b33ec8 [2022-07-19 22:20:41,884 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 22:20:41,886 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i [2022-07-19 22:20:41,914 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a0a812f3/5ea80fa50b0f44759eda69aa39f9b531/FLAG6b5b33ec8 [2022-07-19 22:20:42,103 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a0a812f3/5ea80fa50b0f44759eda69aa39f9b531 [2022-07-19 22:20:42,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 22:20:42,107 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 22:20:42,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 22:20:42,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 22:20:42,116 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 22:20:42,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:20:42" (1/1) ... [2022-07-19 22:20:42,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@458bfd13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:20:42, skipping insertion in model container [2022-07-19 22:20:42,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:20:42" (1/1) ... [2022-07-19 22:20:42,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 22:20:42,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 22:20:42,430 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/memset_using_uint64_harness.i[4493,4506] [2022-07-19 22:20:42,436 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/memset_using_uint64_harness.i[4553,4566] [2022-07-19 22:20:42,981 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:42,981 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:42,982 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:42,982 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:42,984 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:43,000 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:43,001 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:43,003 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:43,003 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:43,004 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:43,005 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:43,005 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:43,005 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:43,109 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 22:20:43,110 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 22:20:43,110 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 22:20:43,111 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 22:20:43,113 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 22:20:43,113 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 22:20:43,114 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 22:20:43,114 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 22:20:43,115 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 22:20:43,115 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 22:20:43,161 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 22:20:43,170 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 22:20:43,180 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/memset_using_uint64_harness.i[4493,4506] [2022-07-19 22:20:43,181 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/memset_using_uint64_harness.i[4553,4566] [2022-07-19 22:20:43,216 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:43,217 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:43,217 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:43,218 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:43,218 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:43,225 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:43,226 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:43,227 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:43,227 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:43,229 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:43,229 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:43,229 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:43,230 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:20:43,244 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 22:20:43,245 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 22:20:43,246 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 22:20:43,247 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 22:20:43,248 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 22:20:43,249 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 22:20:43,249 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 22:20:43,250 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 22:20:43,250 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 22:20:43,250 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 22:20:43,272 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 22:20:43,406 INFO L208 MainTranslator]: Completed translation [2022-07-19 22:20:43,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:20:43 WrapperNode [2022-07-19 22:20:43,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 22:20:43,407 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 22:20:43,407 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 22:20:43,407 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 22:20:43,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:20:43" (1/1) ... [2022-07-19 22:20:43,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:20:43" (1/1) ... [2022-07-19 22:20:43,496 INFO L137 Inliner]: procedures = 592, calls = 625, calls flagged for inlining = 38, calls inlined = 6, statements flattened = 123 [2022-07-19 22:20:43,497 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 22:20:43,498 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 22:20:43,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 22:20:43,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 22:20:43,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:20:43" (1/1) ... [2022-07-19 22:20:43,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:20:43" (1/1) ... [2022-07-19 22:20:43,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:20:43" (1/1) ... [2022-07-19 22:20:43,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:20:43" (1/1) ... [2022-07-19 22:20:43,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:20:43" (1/1) ... [2022-07-19 22:20:43,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:20:43" (1/1) ... [2022-07-19 22:20:43,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:20:43" (1/1) ... [2022-07-19 22:20:43,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 22:20:43,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 22:20:43,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 22:20:43,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 22:20:43,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:20:43" (1/1) ... [2022-07-19 22:20:43,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 22:20:43,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:20:43,605 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) [2022-07-19 22:20:43,613 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 [2022-07-19 22:20:43,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 22:20:43,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 22:20:43,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 22:20:43,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 22:20:43,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 22:20:43,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 22:20:43,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 22:20:43,640 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 22:20:43,640 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 22:20:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 22:20:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure assert_all_bytes_are [2022-07-19 22:20:43,642 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_all_bytes_are [2022-07-19 22:20:43,642 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-19 22:20:43,643 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-19 22:20:43,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 22:20:43,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 22:20:43,846 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 22:20:43,847 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 22:20:44,141 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 22:20:44,147 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 22:20:44,148 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-19 22:20:44,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:20:44 BoogieIcfgContainer [2022-07-19 22:20:44,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 22:20:44,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 22:20:44,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 22:20:44,154 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 22:20:44,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 10:20:42" (1/3) ... [2022-07-19 22:20:44,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3642edb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:20:44, skipping insertion in model container [2022-07-19 22:20:44,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:20:43" (2/3) ... [2022-07-19 22:20:44,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3642edb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:20:44, skipping insertion in model container [2022-07-19 22:20:44,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:20:44" (3/3) ... [2022-07-19 22:20:44,157 INFO L111 eAbstractionObserver]: Analyzing ICFG memset_using_uint64_harness.i [2022-07-19 22:20:44,169 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 22:20:44,169 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 22:20:44,228 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 22:20:44,235 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@9344c0c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@27e53247 [2022-07-19 22:20:44,235 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 22:20:44,238 INFO L276 IsEmpty]: Start isEmpty. Operand has 70 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 54 states have internal predecessors, (71), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-19 22:20:44,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-19 22:20:44,246 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:20:44,246 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:20:44,247 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:20:44,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:20:44,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1569633619, now seen corresponding path program 1 times [2022-07-19 22:20:44,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:20:44,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878608534] [2022-07-19 22:20:44,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:20:44,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:20:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:44,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:20:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:44,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 22:20:44,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:44,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 22:20:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:44,711 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 22:20:44,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:20:44,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878608534] [2022-07-19 22:20:44,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878608534] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:20:44,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:20:44,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 22:20:44,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091543697] [2022-07-19 22:20:44,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:20:44,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 22:20:44,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:20:44,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 22:20:44,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 22:20:44,743 INFO L87 Difference]: Start difference. First operand has 70 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 54 states have internal predecessors, (71), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 22:20:44,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:20:44,765 INFO L93 Difference]: Finished difference Result 137 states and 191 transitions. [2022-07-19 22:20:44,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 22:20:44,767 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-07-19 22:20:44,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:20:44,774 INFO L225 Difference]: With dead ends: 137 [2022-07-19 22:20:44,774 INFO L226 Difference]: Without dead ends: 62 [2022-07-19 22:20:44,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 22:20:44,781 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:20:44,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 22:20:44,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-07-19 22:20:44,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-07-19 22:20:44,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 47 states have (on average 1.2765957446808511) internal successors, (60), 48 states have internal predecessors, (60), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-19 22:20:44,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 80 transitions. [2022-07-19 22:20:44,836 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 80 transitions. Word has length 45 [2022-07-19 22:20:44,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:20:44,839 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 80 transitions. [2022-07-19 22:20:44,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 22:20:44,840 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 80 transitions. [2022-07-19 22:20:44,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-19 22:20:44,842 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:20:44,842 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:20:44,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 22:20:44,842 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:20:44,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:20:44,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1695278887, now seen corresponding path program 1 times [2022-07-19 22:20:44,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:20:44,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476570191] [2022-07-19 22:20:44,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:20:44,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:20:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:45,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:20:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:45,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 22:20:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:45,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 22:20:45,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:45,040 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 22:20:45,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:20:45,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476570191] [2022-07-19 22:20:45,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476570191] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:20:45,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:20:45,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 22:20:45,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878748079] [2022-07-19 22:20:45,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:20:45,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 22:20:45,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:20:45,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 22:20:45,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 22:20:45,049 INFO L87 Difference]: Start difference. First operand 62 states and 80 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 22:20:45,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:20:45,145 INFO L93 Difference]: Finished difference Result 122 states and 157 transitions. [2022-07-19 22:20:45,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 22:20:45,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-07-19 22:20:45,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:20:45,148 INFO L225 Difference]: With dead ends: 122 [2022-07-19 22:20:45,149 INFO L226 Difference]: Without dead ends: 75 [2022-07-19 22:20:45,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 22:20:45,151 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 5 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:20:45,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 125 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:20:45,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-07-19 22:20:45,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2022-07-19 22:20:45,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 59 states have (on average 1.2203389830508475) internal successors, (72), 60 states have internal predecessors, (72), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-19 22:20:45,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2022-07-19 22:20:45,170 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 45 [2022-07-19 22:20:45,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:20:45,171 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2022-07-19 22:20:45,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 22:20:45,172 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2022-07-19 22:20:45,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-19 22:20:45,174 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:20:45,175 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:20:45,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 22:20:45,175 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:20:45,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:20:45,176 INFO L85 PathProgramCache]: Analyzing trace with hash -910744667, now seen corresponding path program 1 times [2022-07-19 22:20:45,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:20:45,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755416713] [2022-07-19 22:20:45,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:20:45,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:20:45,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:45,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:20:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:45,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 22:20:45,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:45,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 22:20:45,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:45,541 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 22:20:45,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:20:45,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755416713] [2022-07-19 22:20:45,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755416713] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:20:45,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:20:45,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 22:20:45,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901194858] [2022-07-19 22:20:45,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:20:45,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 22:20:45,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:20:45,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 22:20:45,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 22:20:45,545 INFO L87 Difference]: Start difference. First operand 74 states and 92 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-19 22:20:45,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:20:45,763 INFO L93 Difference]: Finished difference Result 169 states and 208 transitions. [2022-07-19 22:20:45,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 22:20:45,764 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2022-07-19 22:20:45,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:20:45,765 INFO L225 Difference]: With dead ends: 169 [2022-07-19 22:20:45,765 INFO L226 Difference]: Without dead ends: 120 [2022-07-19 22:20:45,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-07-19 22:20:45,767 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 117 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:20:45,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 343 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:20:45,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-07-19 22:20:45,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 79. [2022-07-19 22:20:45,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 63 states have (on average 1.2063492063492063) internal successors, (76), 64 states have internal predecessors, (76), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-19 22:20:45,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 98 transitions. [2022-07-19 22:20:45,791 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 98 transitions. Word has length 45 [2022-07-19 22:20:45,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:20:45,792 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 98 transitions. [2022-07-19 22:20:45,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-19 22:20:45,792 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 98 transitions. [2022-07-19 22:20:45,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-19 22:20:45,794 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:20:45,795 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:20:45,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 22:20:45,795 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:20:45,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:20:45,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1578784295, now seen corresponding path program 1 times [2022-07-19 22:20:45,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:20:45,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950189003] [2022-07-19 22:20:45,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:20:45,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:20:45,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:46,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:20:46,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:46,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 22:20:46,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:46,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 22:20:46,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:46,045 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 22:20:46,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:20:46,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950189003] [2022-07-19 22:20:46,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950189003] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:20:46,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:20:46,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 22:20:46,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390301742] [2022-07-19 22:20:46,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:20:46,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 22:20:46,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:20:46,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 22:20:46,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 22:20:46,048 INFO L87 Difference]: Start difference. First operand 79 states and 98 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 22:20:46,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:20:46,135 INFO L93 Difference]: Finished difference Result 85 states and 103 transitions. [2022-07-19 22:20:46,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 22:20:46,136 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-07-19 22:20:46,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:20:46,137 INFO L225 Difference]: With dead ends: 85 [2022-07-19 22:20:46,137 INFO L226 Difference]: Without dead ends: 83 [2022-07-19 22:20:46,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-19 22:20:46,146 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 32 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:20:46,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 294 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 22:20:46,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-07-19 22:20:46,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-07-19 22:20:46,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 66 states have (on average 1.196969696969697) internal successors, (79), 67 states have internal predecessors, (79), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-19 22:20:46,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 101 transitions. [2022-07-19 22:20:46,161 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 101 transitions. Word has length 45 [2022-07-19 22:20:46,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:20:46,162 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 101 transitions. [2022-07-19 22:20:46,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 22:20:46,162 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 101 transitions. [2022-07-19 22:20:46,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-19 22:20:46,163 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:20:46,163 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:20:46,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 22:20:46,164 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:20:46,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:20:46,164 INFO L85 PathProgramCache]: Analyzing trace with hash -116213960, now seen corresponding path program 1 times [2022-07-19 22:20:46,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:20:46,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799069908] [2022-07-19 22:20:46,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:20:46,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:20:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:46,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:20:46,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:46,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 22:20:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:46,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 22:20:46,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:46,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 22:20:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:46,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 22:20:46,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:46,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 22:20:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:46,508 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-19 22:20:46,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:20:46,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799069908] [2022-07-19 22:20:46,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799069908] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:20:46,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665856462] [2022-07-19 22:20:46,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:20:46,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:20:46,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:20:46,511 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) [2022-07-19 22:20:46,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 22:20:46,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:46,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-19 22:20:46,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:20:46,975 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 22:20:46,976 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:20:46,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665856462] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:20:46,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:20:46,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 12 [2022-07-19 22:20:46,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411025957] [2022-07-19 22:20:46,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:20:46,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 22:20:46,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:20:46,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 22:20:46,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-19 22:20:46,978 INFO L87 Difference]: Start difference. First operand 83 states and 101 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-19 22:20:47,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:20:47,067 INFO L93 Difference]: Finished difference Result 144 states and 174 transitions. [2022-07-19 22:20:47,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 22:20:47,068 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 62 [2022-07-19 22:20:47,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:20:47,069 INFO L225 Difference]: With dead ends: 144 [2022-07-19 22:20:47,069 INFO L226 Difference]: Without dead ends: 116 [2022-07-19 22:20:47,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-07-19 22:20:47,070 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 84 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:20:47,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 241 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 15 Unchecked, 0.0s Time] [2022-07-19 22:20:47,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-07-19 22:20:47,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2022-07-19 22:20:47,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 96 states have (on average 1.21875) internal successors, (117), 97 states have internal predecessors, (117), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-19 22:20:47,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 141 transitions. [2022-07-19 22:20:47,080 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 141 transitions. Word has length 62 [2022-07-19 22:20:47,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:20:47,081 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 141 transitions. [2022-07-19 22:20:47,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-19 22:20:47,081 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 141 transitions. [2022-07-19 22:20:47,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-19 22:20:47,082 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:20:47,082 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:20:47,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 22:20:47,283 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 [2022-07-19 22:20:47,283 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:20:47,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:20:47,284 INFO L85 PathProgramCache]: Analyzing trace with hash -983473925, now seen corresponding path program 1 times [2022-07-19 22:20:47,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:20:47,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707853180] [2022-07-19 22:20:47,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:20:47,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:20:47,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:47,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:20:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:47,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 22:20:47,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:47,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 22:20:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:47,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 22:20:47,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:47,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 22:20:47,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:47,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:20:47,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:47,433 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 22:20:47,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:20:47,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707853180] [2022-07-19 22:20:47,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707853180] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:20:47,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:20:47,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 22:20:47,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367254286] [2022-07-19 22:20:47,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:20:47,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 22:20:47,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:20:47,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 22:20:47,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 22:20:47,437 INFO L87 Difference]: Start difference. First operand 114 states and 141 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-19 22:20:47,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:20:47,456 INFO L93 Difference]: Finished difference Result 186 states and 227 transitions. [2022-07-19 22:20:47,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 22:20:47,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 63 [2022-07-19 22:20:47,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:20:47,458 INFO L225 Difference]: With dead ends: 186 [2022-07-19 22:20:47,458 INFO L226 Difference]: Without dead ends: 116 [2022-07-19 22:20:47,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 22:20:47,459 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 1 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:20:47,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 151 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 22:20:47,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-07-19 22:20:47,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2022-07-19 22:20:47,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 97 states have (on average 1.2164948453608246) internal successors, (118), 98 states have internal predecessors, (118), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-19 22:20:47,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 142 transitions. [2022-07-19 22:20:47,470 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 142 transitions. Word has length 63 [2022-07-19 22:20:47,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:20:47,470 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 142 transitions. [2022-07-19 22:20:47,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-19 22:20:47,470 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 142 transitions. [2022-07-19 22:20:47,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 22:20:47,472 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:20:47,472 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:20:47,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 22:20:47,472 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:20:47,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:20:47,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1785268669, now seen corresponding path program 1 times [2022-07-19 22:20:47,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:20:47,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586620706] [2022-07-19 22:20:47,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:20:47,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:20:47,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:47,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:20:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:47,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 22:20:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:47,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 22:20:47,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:47,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 22:20:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:47,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:20:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:47,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 22:20:47,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:47,758 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-19 22:20:47,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:20:47,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586620706] [2022-07-19 22:20:47,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586620706] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:20:47,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618131866] [2022-07-19 22:20:47,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:20:47,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:20:47,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:20:47,760 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) [2022-07-19 22:20:47,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 22:20:47,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:47,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-19 22:20:47,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:20:48,130 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 22:20:48,131 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:20:48,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618131866] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:20:48,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:20:48,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 13 [2022-07-19 22:20:48,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926215820] [2022-07-19 22:20:48,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:20:48,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 22:20:48,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:20:48,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 22:20:48,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-19 22:20:48,133 INFO L87 Difference]: Start difference. First operand 115 states and 142 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-19 22:20:48,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:20:48,235 INFO L93 Difference]: Finished difference Result 137 states and 163 transitions. [2022-07-19 22:20:48,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 22:20:48,235 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 66 [2022-07-19 22:20:48,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:20:48,236 INFO L225 Difference]: With dead ends: 137 [2022-07-19 22:20:48,236 INFO L226 Difference]: Without dead ends: 79 [2022-07-19 22:20:48,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 75 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-07-19 22:20:48,238 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 55 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:20:48,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 405 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:20:48,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-07-19 22:20:48,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2022-07-19 22:20:48,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 63 states have (on average 1.1904761904761905) internal successors, (75), 64 states have internal predecessors, (75), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-19 22:20:48,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 95 transitions. [2022-07-19 22:20:48,244 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 95 transitions. Word has length 66 [2022-07-19 22:20:48,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:20:48,245 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 95 transitions. [2022-07-19 22:20:48,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-19 22:20:48,245 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 95 transitions. [2022-07-19 22:20:48,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 22:20:48,246 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:20:48,246 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:20:48,274 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-19 22:20:48,463 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,SelfDestructingSolverStorable6 [2022-07-19 22:20:48,464 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:20:48,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:20:48,464 INFO L85 PathProgramCache]: Analyzing trace with hash 168968953, now seen corresponding path program 1 times [2022-07-19 22:20:48,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:20:48,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863320314] [2022-07-19 22:20:48,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:20:48,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:20:48,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:48,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:20:48,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:48,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 22:20:48,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:48,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 22:20:48,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:48,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 22:20:48,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:48,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 22:20:48,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:48,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-19 22:20:48,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:48,620 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-19 22:20:48,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:20:48,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863320314] [2022-07-19 22:20:48,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863320314] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:20:48,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:20:48,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 22:20:48,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065706933] [2022-07-19 22:20:48,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:20:48,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 22:20:48,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:20:48,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 22:20:48,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 22:20:48,623 INFO L87 Difference]: Start difference. First operand 79 states and 95 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-19 22:20:48,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:20:48,723 INFO L93 Difference]: Finished difference Result 131 states and 157 transitions. [2022-07-19 22:20:48,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 22:20:48,724 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 65 [2022-07-19 22:20:48,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:20:48,725 INFO L225 Difference]: With dead ends: 131 [2022-07-19 22:20:48,725 INFO L226 Difference]: Without dead ends: 95 [2022-07-19 22:20:48,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 22:20:48,726 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 12 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:20:48,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 255 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:20:48,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-07-19 22:20:48,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 81. [2022-07-19 22:20:48,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 66 states have internal predecessors, (77), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-19 22:20:48,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 97 transitions. [2022-07-19 22:20:48,735 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 97 transitions. Word has length 65 [2022-07-19 22:20:48,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:20:48,735 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 97 transitions. [2022-07-19 22:20:48,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-19 22:20:48,736 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 97 transitions. [2022-07-19 22:20:48,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 22:20:48,737 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:20:48,737 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:20:48,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 22:20:48,737 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:20:48,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:20:48,738 INFO L85 PathProgramCache]: Analyzing trace with hash 231008567, now seen corresponding path program 1 times [2022-07-19 22:20:48,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:20:48,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193221442] [2022-07-19 22:20:48,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:20:48,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:20:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:48,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:20:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:48,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 22:20:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:48,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 22:20:48,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:48,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 22:20:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:48,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 22:20:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:48,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-19 22:20:48,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:48,972 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 22:20:48,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:20:48,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193221442] [2022-07-19 22:20:48,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193221442] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:20:48,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682003472] [2022-07-19 22:20:48,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:20:48,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:20:48,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:20:48,976 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) [2022-07-19 22:20:49,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 22:20:49,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:49,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 37 conjunts are in the unsatisfiable core [2022-07-19 22:20:49,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:20:49,740 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-19 22:20:49,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:20:50,146 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 22:20:50,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682003472] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:20:50,147 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 22:20:50,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14, 11] total 25 [2022-07-19 22:20:50,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146300186] [2022-07-19 22:20:50,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 22:20:50,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-19 22:20:50,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:20:50,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-19 22:20:50,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2022-07-19 22:20:50,149 INFO L87 Difference]: Start difference. First operand 81 states and 97 transitions. Second operand has 25 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-07-19 22:20:51,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:20:51,262 INFO L93 Difference]: Finished difference Result 189 states and 226 transitions. [2022-07-19 22:20:51,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 22:20:51,263 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 65 [2022-07-19 22:20:51,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:20:51,264 INFO L225 Difference]: With dead ends: 189 [2022-07-19 22:20:51,264 INFO L226 Difference]: Without dead ends: 134 [2022-07-19 22:20:51,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 123 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=279, Invalid=1281, Unknown=0, NotChecked=0, Total=1560 [2022-07-19 22:20:51,266 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 543 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 22:20:51,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 877 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 22:20:51,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-07-19 22:20:51,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 88. [2022-07-19 22:20:51,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 71 states have (on average 1.1830985915492958) internal successors, (84), 72 states have internal predecessors, (84), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-19 22:20:51,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 106 transitions. [2022-07-19 22:20:51,277 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 106 transitions. Word has length 65 [2022-07-19 22:20:51,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:20:51,277 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 106 transitions. [2022-07-19 22:20:51,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-07-19 22:20:51,277 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 106 transitions. [2022-07-19 22:20:51,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 22:20:51,278 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:20:51,278 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:20:51,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 22:20:51,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:20:51,493 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:20:51,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:20:51,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1140798731, now seen corresponding path program 1 times [2022-07-19 22:20:51,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:20:51,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238924695] [2022-07-19 22:20:51,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:20:51,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:20:51,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:51,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:20:51,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:51,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 22:20:51,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:51,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 22:20:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:51,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 22:20:51,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:51,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 22:20:51,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:51,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-19 22:20:51,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:51,749 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 22:20:51,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:20:51,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238924695] [2022-07-19 22:20:51,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238924695] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:20:51,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429618082] [2022-07-19 22:20:51,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:20:51,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:20:51,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:20:51,752 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) [2022-07-19 22:20:51,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 22:20:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:52,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 38 conjunts are in the unsatisfiable core [2022-07-19 22:20:52,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:20:52,404 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-19 22:20:52,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:20:52,823 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 22:20:52,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429618082] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:20:52,824 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 22:20:52,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16, 13] total 29 [2022-07-19 22:20:52,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530011807] [2022-07-19 22:20:52,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 22:20:52,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-19 22:20:52,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:20:52,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-19 22:20:52,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=710, Unknown=0, NotChecked=0, Total=812 [2022-07-19 22:20:52,826 INFO L87 Difference]: Start difference. First operand 88 states and 106 transitions. Second operand has 29 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 26 states have internal predecessors, (75), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-07-19 22:20:53,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:20:53,956 INFO L93 Difference]: Finished difference Result 177 states and 213 transitions. [2022-07-19 22:20:53,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-19 22:20:53,957 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 26 states have internal predecessors, (75), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 65 [2022-07-19 22:20:53,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:20:53,958 INFO L225 Difference]: With dead ends: 177 [2022-07-19 22:20:53,958 INFO L226 Difference]: Without dead ends: 124 [2022-07-19 22:20:53,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 122 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=327, Invalid=1653, Unknown=0, NotChecked=0, Total=1980 [2022-07-19 22:20:53,960 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 427 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 22:20:53,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 922 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 22:20:53,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-07-19 22:20:53,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 98. [2022-07-19 22:20:53,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 81 states have (on average 1.1604938271604939) internal successors, (94), 82 states have internal predecessors, (94), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-19 22:20:53,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 116 transitions. [2022-07-19 22:20:53,970 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 116 transitions. Word has length 65 [2022-07-19 22:20:53,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:20:53,970 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 116 transitions. [2022-07-19 22:20:53,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 26 states have internal predecessors, (75), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-07-19 22:20:53,971 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 116 transitions. [2022-07-19 22:20:53,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 22:20:53,972 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:20:53,972 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:20:54,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 22:20:54,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:20:54,184 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:20:54,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:20:54,184 INFO L85 PathProgramCache]: Analyzing trace with hash -216148949, now seen corresponding path program 1 times [2022-07-19 22:20:54,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:20:54,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308538396] [2022-07-19 22:20:54,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:20:54,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:20:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:55,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:20:55,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:55,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 22:20:55,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:55,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 22:20:55,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:55,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 22:20:55,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:55,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 22:20:55,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:55,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-19 22:20:55,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:55,686 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-19 22:20:55,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:20:55,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308538396] [2022-07-19 22:20:55,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308538396] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:20:55,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543475917] [2022-07-19 22:20:55,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:20:55,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:20:55,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:20:55,692 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) [2022-07-19 22:20:55,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 22:20:55,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:20:56,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 103 conjunts are in the unsatisfiable core [2022-07-19 22:20:56,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:20:56,052 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-19 22:20:56,334 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 41 [2022-07-19 22:20:56,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:20:56,343 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 75 [2022-07-19 22:20:56,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:20:56,374 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 9 [2022-07-19 22:20:57,825 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 41 [2022-07-19 22:21:16,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:21:16,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:21:16,314 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 22:21:16,315 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 67 [2022-07-19 22:21:16,502 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 22:21:16,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:21:17,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543475917] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:21:17,138 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:21:17,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23] total 40 [2022-07-19 22:21:17,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331288911] [2022-07-19 22:21:17,139 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 22:21:17,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-07-19 22:21:17,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:21:17,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-07-19 22:21:17,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1741, Unknown=0, NotChecked=0, Total=1892 [2022-07-19 22:21:17,140 INFO L87 Difference]: Start difference. First operand 98 states and 116 transitions. Second operand has 40 states, 37 states have (on average 2.5135135135135136) internal successors, (93), 37 states have internal predecessors, (93), 11 states have call successors, (14), 4 states have call predecessors, (14), 6 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2022-07-19 22:21:26,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:21:26,691 INFO L93 Difference]: Finished difference Result 200 states and 232 transitions. [2022-07-19 22:21:26,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-19 22:21:26,692 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 37 states have (on average 2.5135135135135136) internal successors, (93), 37 states have internal predecessors, (93), 11 states have call successors, (14), 4 states have call predecessors, (14), 6 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) Word has length 65 [2022-07-19 22:21:26,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:21:26,693 INFO L225 Difference]: With dead ends: 200 [2022-07-19 22:21:26,693 INFO L226 Difference]: Without dead ends: 198 [2022-07-19 22:21:26,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 58 SyntacticMatches, 8 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=380, Invalid=3910, Unknown=0, NotChecked=0, Total=4290 [2022-07-19 22:21:26,695 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 336 mSDsluCounter, 2148 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 2268 SdHoareTripleChecker+Invalid, 1565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 136 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-19 22:21:26,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 2268 Invalid, 1565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1353 Invalid, 0 Unknown, 136 Unchecked, 3.9s Time] [2022-07-19 22:21:26,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-07-19 22:21:26,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 173. [2022-07-19 22:21:26,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 135 states have (on average 1.1555555555555554) internal successors, (156), 138 states have internal predecessors, (156), 24 states have call successors, (24), 15 states have call predecessors, (24), 13 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-07-19 22:21:26,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 200 transitions. [2022-07-19 22:21:26,718 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 200 transitions. Word has length 65 [2022-07-19 22:21:26,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:21:26,719 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 200 transitions. [2022-07-19 22:21:26,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 37 states have (on average 2.5135135135135136) internal successors, (93), 37 states have internal predecessors, (93), 11 states have call successors, (14), 4 states have call predecessors, (14), 6 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2022-07-19 22:21:26,719 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 200 transitions. [2022-07-19 22:21:26,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 22:21:26,720 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:21:26,720 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:21:26,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 22:21:26,920 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 [2022-07-19 22:21:26,921 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:21:26,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:21:26,921 INFO L85 PathProgramCache]: Analyzing trace with hash -725622039, now seen corresponding path program 1 times [2022-07-19 22:21:26,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:21:26,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152648947] [2022-07-19 22:21:26,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:21:26,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:21:26,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:21:27,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:21:27,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:21:27,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 22:21:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:21:27,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 22:21:27,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:21:27,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 22:21:27,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:21:27,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 22:21:27,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:21:27,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-19 22:21:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:21:27,152 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 22:21:27,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:21:27,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152648947] [2022-07-19 22:21:27,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152648947] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:21:27,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312256647] [2022-07-19 22:21:27,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:21:27,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:21:27,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:21:27,156 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) [2022-07-19 22:21:27,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 22:21:27,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:21:27,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 50 conjunts are in the unsatisfiable core [2022-07-19 22:21:27,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:21:27,767 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-19 22:21:27,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:21:28,377 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 22:21:28,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312256647] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:21:28,378 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 22:21:28,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 17] total 31 [2022-07-19 22:21:28,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599846206] [2022-07-19 22:21:28,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 22:21:28,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-19 22:21:28,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:21:28,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-19 22:21:28,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=803, Unknown=0, NotChecked=0, Total=930 [2022-07-19 22:21:28,379 INFO L87 Difference]: Start difference. First operand 173 states and 200 transitions. Second operand has 31 states, 29 states have (on average 3.206896551724138) internal successors, (93), 28 states have internal predecessors, (93), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2022-07-19 22:21:29,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:21:29,504 INFO L93 Difference]: Finished difference Result 217 states and 248 transitions. [2022-07-19 22:21:29,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 22:21:29,505 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 3.206896551724138) internal successors, (93), 28 states have internal predecessors, (93), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 65 [2022-07-19 22:21:29,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:21:29,509 INFO L225 Difference]: With dead ends: 217 [2022-07-19 22:21:29,509 INFO L226 Difference]: Without dead ends: 174 [2022-07-19 22:21:29,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 117 SyntacticMatches, 6 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=392, Invalid=1864, Unknown=0, NotChecked=0, Total=2256 [2022-07-19 22:21:29,510 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 617 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 22:21:29,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [618 Valid, 598 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 22:21:29,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-07-19 22:21:29,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 170. [2022-07-19 22:21:29,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 132 states have (on average 1.143939393939394) internal successors, (151), 135 states have internal predecessors, (151), 24 states have call successors, (24), 15 states have call predecessors, (24), 13 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-07-19 22:21:29,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 195 transitions. [2022-07-19 22:21:29,532 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 195 transitions. Word has length 65 [2022-07-19 22:21:29,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:21:29,532 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 195 transitions. [2022-07-19 22:21:29,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 3.206896551724138) internal successors, (93), 28 states have internal predecessors, (93), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2022-07-19 22:21:29,532 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 195 transitions. [2022-07-19 22:21:29,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-19 22:21:29,533 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:21:29,534 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-07-19 22:21:29,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-19 22:21:29,738 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 [2022-07-19 22:21:29,738 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:21:29,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:21:29,738 INFO L85 PathProgramCache]: Analyzing trace with hash -372948043, now seen corresponding path program 2 times [2022-07-19 22:21:29,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:21:29,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931043576] [2022-07-19 22:21:29,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:21:29,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:21:29,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:21:35,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:21:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:21:35,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 22:21:35,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:21:35,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 22:21:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:21:35,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 22:21:35,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:21:35,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 22:21:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:21:35,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 22:21:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:21:35,888 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-19 22:21:35,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:21:35,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931043576] [2022-07-19 22:21:35,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931043576] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:21:35,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785710012] [2022-07-19 22:21:35,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 22:21:35,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:21:35,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:21:35,892 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) [2022-07-19 22:21:35,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 22:21:36,283 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 22:21:36,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:21:36,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 122 conjunts are in the unsatisfiable core [2022-07-19 22:21:36,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:21:36,300 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-19 22:21:36,689 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 41 [2022-07-19 22:21:36,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:21:36,698 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 75 [2022-07-19 22:21:36,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:21:36,726 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 9 [2022-07-19 22:21:37,040 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 71 [2022-07-19 22:21:37,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:21:37,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:21:37,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:21:37,048 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 111 [2022-07-19 22:21:39,101 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 75 [2022-07-19 22:21:39,193 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 75 [2022-07-19 22:21:39,297 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 75 [2022-07-19 22:21:39,438 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 75 [2022-07-19 22:21:39,513 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 75 [2022-07-19 22:21:39,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:21:39,588 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 78 [2022-07-19 22:21:39,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:21:39,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:21:39,967 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 85 [2022-07-19 22:21:41,975 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_4| Int)) (let ((.cse6 (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_4|))) (let ((.cse7 (select .cse6 0))) (let ((.cse1 (mod .cse7 256))) (let ((.cse2 (<= .cse1 127))) (let ((.cse3 (+ (- 256) .cse1)) (.cse4 (not .cse2)) (.cse5 (select |c_#memory_int| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_4|))) (and (let ((.cse0 (select .cse5 0))) (or (and (= .cse0 .cse1) .cse2) (and (= .cse0 .cse3) .cse4))) (not (= |v_ULTIMATE.start_assert_bytes_match_~b#1.base_BEFORE_CALL_4| |v_ULTIMATE.start_assert_bytes_match_~a#1.base_BEFORE_CALL_4|)) (= (select .cse6 1) .cse7) (let ((.cse8 (select .cse5 1))) (or (and (= .cse8 .cse1) .cse2) (and (= .cse8 .cse3) .cse4)))))))))) is different from true [2022-07-19 22:22:09,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:22:09,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:22:09,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:22:09,458 INFO L356 Elim1Store]: treesize reduction 62, result has 10.1 percent of original size [2022-07-19 22:22:09,459 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 5 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 236 treesize of output 130 [2022-07-19 22:22:09,699 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2022-07-19 22:22:09,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:22:10,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785710012] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:22:10,582 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:22:10,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 27] total 46 [2022-07-19 22:22:10,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390778176] [2022-07-19 22:22:10,582 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 22:22:10,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-07-19 22:22:10,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:22:10,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-07-19 22:22:10,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=2251, Unknown=8, NotChecked=96, Total=2550 [2022-07-19 22:22:10,584 INFO L87 Difference]: Start difference. First operand 170 states and 195 transitions. Second operand has 46 states, 43 states have (on average 2.2093023255813953) internal successors, (95), 42 states have internal predecessors, (95), 10 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (12), 10 states have call predecessors, (12), 8 states have call successors, (12) [2022-07-19 22:22:22,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:22:22,960 INFO L93 Difference]: Finished difference Result 273 states and 322 transitions. [2022-07-19 22:22:22,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-19 22:22:22,961 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 43 states have (on average 2.2093023255813953) internal successors, (95), 42 states have internal predecessors, (95), 10 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (12), 10 states have call predecessors, (12), 8 states have call successors, (12) Word has length 67 [2022-07-19 22:22:22,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:22:22,963 INFO L225 Difference]: With dead ends: 273 [2022-07-19 22:22:22,963 INFO L226 Difference]: Without dead ends: 271 [2022-07-19 22:22:22,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 61 SyntacticMatches, 5 SemanticMatches, 66 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1380 ImplicationChecksByTransitivity, 37.0s TimeCoverageRelationStatistics Valid=375, Invalid=4041, Unknown=10, NotChecked=130, Total=4556 [2022-07-19 22:22:22,964 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 343 mSDsluCounter, 1920 mSDsCounter, 0 mSdLazyCounter, 1681 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 2033 SdHoareTripleChecker+Invalid, 2183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 426 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:22:22,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 2033 Invalid, 2183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1681 Invalid, 0 Unknown, 426 Unchecked, 7.1s Time] [2022-07-19 22:22:22,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-07-19 22:22:22,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 231. [2022-07-19 22:22:22,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 183 states have (on average 1.1584699453551912) internal successors, (212), 187 states have internal predecessors, (212), 29 states have call successors, (29), 20 states have call predecessors, (29), 18 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-19 22:22:22,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 266 transitions. [2022-07-19 22:22:22,990 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 266 transitions. Word has length 67 [2022-07-19 22:22:22,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:22:22,991 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 266 transitions. [2022-07-19 22:22:22,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 43 states have (on average 2.2093023255813953) internal successors, (95), 42 states have internal predecessors, (95), 10 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (12), 10 states have call predecessors, (12), 8 states have call successors, (12) [2022-07-19 22:22:22,991 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 266 transitions. [2022-07-19 22:22:22,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-19 22:22:22,992 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:22:22,992 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-07-19 22:22:23,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-19 22:22:23,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:22:23,199 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:22:23,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:22:23,200 INFO L85 PathProgramCache]: Analyzing trace with hash -820105559, now seen corresponding path program 2 times [2022-07-19 22:22:23,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:22:23,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158059446] [2022-07-19 22:22:23,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:22:23,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:22:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 22:22:23,246 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 22:22:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 22:22:23,329 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 22:22:23,330 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 22:22:23,331 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 22:22:23,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 22:22:23,335 INFO L356 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:22:23,338 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 22:22:23,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 10:22:23 BoogieIcfgContainer [2022-07-19 22:22:23,409 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 22:22:23,409 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 22:22:23,410 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 22:22:23,410 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 22:22:23,410 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:20:44" (3/4) ... [2022-07-19 22:22:23,413 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-19 22:22:23,413 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 22:22:23,413 INFO L158 Benchmark]: Toolchain (without parser) took 101305.99ms. Allocated memory was 100.7MB in the beginning and 232.8MB in the end (delta: 132.1MB). Free memory was 63.8MB in the beginning and 80.5MB in the end (delta: -16.7MB). Peak memory consumption was 116.1MB. Max. memory is 16.1GB. [2022-07-19 22:22:23,413 INFO L158 Benchmark]: CDTParser took 0.70ms. Allocated memory is still 83.9MB. Free memory was 43.8MB in the beginning and 43.8MB in the end (delta: 49.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 22:22:23,414 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1294.01ms. Allocated memory was 100.7MB in the beginning and 130.0MB in the end (delta: 29.4MB). Free memory was 63.5MB in the beginning and 84.9MB in the end (delta: -21.4MB). Peak memory consumption was 42.2MB. Max. memory is 16.1GB. [2022-07-19 22:22:23,417 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.17ms. Allocated memory is still 130.0MB. Free memory was 84.9MB in the beginning and 80.0MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-19 22:22:23,418 INFO L158 Benchmark]: Boogie Preprocessor took 63.53ms. Allocated memory is still 130.0MB. Free memory was 80.0MB in the beginning and 77.9MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 22:22:23,418 INFO L158 Benchmark]: RCFGBuilder took 587.66ms. Allocated memory is still 130.0MB. Free memory was 77.2MB in the beginning and 91.8MB in the end (delta: -14.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-07-19 22:22:23,418 INFO L158 Benchmark]: TraceAbstraction took 99257.76ms. Allocated memory was 130.0MB in the beginning and 232.8MB in the end (delta: 102.8MB). Free memory was 90.9MB in the beginning and 81.6MB in the end (delta: 9.4MB). Peak memory consumption was 113.9MB. Max. memory is 16.1GB. [2022-07-19 22:22:23,418 INFO L158 Benchmark]: Witness Printer took 3.40ms. Allocated memory is still 232.8MB. Free memory is still 80.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 22:22:23,422 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.70ms. Allocated memory is still 83.9MB. Free memory was 43.8MB in the beginning and 43.8MB in the end (delta: 49.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1294.01ms. Allocated memory was 100.7MB in the beginning and 130.0MB in the end (delta: 29.4MB). Free memory was 63.5MB in the beginning and 84.9MB in the end (delta: -21.4MB). Peak memory consumption was 42.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 90.17ms. Allocated memory is still 130.0MB. Free memory was 84.9MB in the beginning and 80.0MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.53ms. Allocated memory is still 130.0MB. Free memory was 80.0MB in the beginning and 77.9MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 587.66ms. Allocated memory is still 130.0MB. Free memory was 77.2MB in the beginning and 91.8MB in the end (delta: -14.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 99257.76ms. Allocated memory was 130.0MB in the beginning and 232.8MB in the end (delta: 102.8MB). Free memory was 90.9MB in the beginning and 81.6MB in the end (delta: 9.4MB). Peak memory consumption was 113.9MB. Max. memory is 16.1GB. * Witness Printer took 3.40ms. Allocated memory is still 232.8MB. Free memory is still 80.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 5884. Possible FailurePath: [L5947] CALL memset_using_uint64_harness() [L5937] short d1[160]; [L5938] short d2[160]; [L5939] int c = __VERIFIER_nondet_int(); [L5940] unsigned size = __VERIFIER_nondet_uint(); [L5941] CALL assume_abort_if_not(size < 160) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5941] RET assume_abort_if_not(size < 160) VAL [c=255, d1={7:0}, d2={6:0}, size=2] [L5942] CALL memset_impl(d1, c, size) [L5870] CALL assume_abort_if_not((((n) == 0) || (s))) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5870] RET assume_abort_if_not((((n) == 0) || (s))) VAL [c=255, n=2, s={7:0}] [L5871] COND TRUE n > 0 [L5872] char *sp = (char *)s; [L5873] unsigned long i = 0; VAL [c=255, i=0, n=2, s={7:0}, sp={7:0}] [L5873] COND TRUE i < n [L5874] sp[i] = c VAL [c=255, i=0, n=2, s={7:0}, sp={7:0}] [L5873] i++ VAL [c=255, i=1, n=2, s={7:0}, sp={7:0}] [L5873] COND TRUE i < n [L5874] sp[i] = c VAL [c=255, i=1, n=2, s={7:0}, sp={7:0}] [L5873] i++ VAL [c=255, i=2, n=2, s={7:0}, sp={7:0}] [L5873] COND FALSE !(i < n) VAL [c=255, i=2, n=2, s={7:0}, sp={7:0}] [L5876] return s; VAL [c=255, i=2, n=2, s={7:0}, sp={7:0}] [L5942] RET memset_impl(d1, c, size) [L5943] CALL memset_using_uint64_impl(d2, c, size) [L5881] CALL assume_abort_if_not((((n) == 0) || (dst))) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5881] RET assume_abort_if_not((((n) == 0) || (dst))) VAL [c=255, dst={6:0}, n=2] [L5883] size_t num_uint64s = n >> 3; [L5884] size_t rem = n & 0x7; [L5886] uint8_t *d = (uint8_t *)dst; [L5890] case 7: VAL [c=255, d={6:0}, dst={6:0}, n=2, num_uint64s=0, rem=1] [L5892] case 6: VAL [c=255, d={6:0}, dst={6:0}, n=2, num_uint64s=0, rem=1] [L5894] case 5: VAL [c=255, d={6:0}, dst={6:0}, n=2, num_uint64s=0, rem=1] [L5896] case 4: VAL [c=255, d={6:0}, dst={6:0}, n=2, num_uint64s=0, rem=1] [L5898] case 3: VAL [c=255, d={6:0}, dst={6:0}, n=2, num_uint64s=0, rem=1] [L5900] case 2: VAL [c=255, d={6:0}, dst={6:0}, n=2, num_uint64s=0, rem=1] [L5902] case 1: [L5903] d[0] = c VAL [c=255, d={6:0}, dst={6:0}, n=2, num_uint64s=0, rem=1] [L5906] d += rem [L5908] uint64_t compounded = 0; VAL [c=255, compounded={5:0}, d={6:1}, dst={6:0}, n=2, num_uint64s=0, rem=1] [L5909] COND FALSE !(num_uint64s > 0 && c != 0) VAL [c=255, compounded={5:0}, d={6:1}, dst={6:0}, n=2, num_uint64s=0, rem=1] [L5921] size_t i = 0; VAL [c=255, compounded={5:0}, d={6:1}, dst={6:0}, i=0, n=2, num_uint64s=0, rem=1] [L5921] COND FALSE !(i < num_uint64s) VAL [c=255, compounded={5:0}, d={6:1}, dst={6:0}, i=0, n=2, num_uint64s=0, rem=1] [L5925] return dst; [L5908] uint64_t compounded = 0; [L5925] return dst; VAL [c=255, d={6:1}, dst={6:0}, i=0, n=2, num_uint64s=0, rem=1] [L5943] RET memset_using_uint64_impl(d2, c, size) [L5944] CALL assert_bytes_match(d1, d2, size) [L5654] CALL __VERIFIER_assert(!a == !b) VAL [\old(cond)=1] [L223] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5654] RET __VERIFIER_assert(!a == !b) VAL [\old(len)=2, a={7:0}, a={7:0}, b={6:0}, b={6:0}, len=2] [L5655-L5658] COND TRUE len > 0 && a != ((void *)0) && b != ((void *)0) VAL [\old(len)=2, a={7:0}, a={7:0}, b={6:0}, b={6:0}, len=2] [L5660] CALL, EXPR nondet_uint64_t() [L266] return __VERIFIER_nondet_ulong(); [L5660] RET, EXPR nondet_uint64_t() VAL [\old(len)=2, a={7:0}, a={7:0}, b={6:0}, b={6:0}, len=2, nondet_uint64_t()=18446744073709551617] [L5660] size_t i = nondet_uint64_t(); [L5661-L5663] CALL assume_abort_if_not(i < len && len < ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5661-L5663] RET assume_abort_if_not(i < len && len < ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(len)=2, a={7:0}, a={7:0}, b={6:0}, b={6:0}, i=1, len=2] [L5664] EXPR a[i] [L5664] EXPR b[i] VAL [\old(len)=2, a={7:0}, a={7:0}, a[i]=-1, b={6:0}, b={6:0}, b[i]=9, i=1, len=2] [L5664] CALL __VERIFIER_assert(a[i] == b[i]) VAL [\old(cond)=0] [L223] COND TRUE !cond VAL [\old(cond)=0, cond=0] [L223] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 70 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 99.1s, OverallIterations: 14, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 26.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2614 SdHoareTripleChecker+Valid, 13.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2572 mSDsluCounter, 8601 SdHoareTripleChecker+Invalid, 12.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 577 IncrementalHoareTripleChecker+Unchecked, 7471 mSDsCounter, 785 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5268 IncrementalHoareTripleChecker+Invalid, 6630 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 785 mSolverCounterUnsat, 1130 mSDtfsCounter, 5268 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1023 GetRequests, 692 SyntacticMatches, 31 SemanticMatches, 300 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3702 ImplicationChecksByTransitivity, 64.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=231occurred in iteration=13, InterpolantAutomatonStates: 160, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 200 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 67.6s InterpolantComputationTime, 1285 NumberOfCodeBlocks, 1285 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1390 ConstructedInterpolants, 34 QuantifiedInterpolants, 24290 SizeOfPredicates, 148 NumberOfNonLiveVariables, 2570 ConjunctsInSsa, 370 ConjunctsInUnsatCore, 23 InterpolantComputations, 8 PerfectInterpolantSequences, 494/562 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-19 22:22:23,667 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-07-19 22:22:23,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/memset_using_uint64_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 9ff439c9da308e48e314eaeb6f620d0560f5430b3c601570b5afd8d635a5b965 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 22:22:25,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 22:22:25,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 22:22:25,454 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 22:22:25,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 22:22:25,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 22:22:25,456 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 22:22:25,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 22:22:25,460 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 22:22:25,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 22:22:25,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 22:22:25,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 22:22:25,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 22:22:25,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 22:22:25,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 22:22:25,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 22:22:25,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 22:22:25,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 22:22:25,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 22:22:25,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 22:22:25,484 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 22:22:25,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 22:22:25,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 22:22:25,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 22:22:25,489 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 22:22:25,494 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 22:22:25,496 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 22:22:25,496 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 22:22:25,497 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 22:22:25,497 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 22:22:25,498 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 22:22:25,498 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 22:22:25,499 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 22:22:25,500 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 22:22:25,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 22:22:25,501 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 22:22:25,501 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 22:22:25,502 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 22:22:25,502 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 22:22:25,502 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 22:22:25,503 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 22:22:25,506 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 22:22:25,511 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-19 22:22:25,553 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 22:22:25,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 22:22:25,554 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 22:22:25,554 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 22:22:25,555 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 22:22:25,555 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 22:22:25,556 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 22:22:25,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 22:22:25,556 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 22:22:25,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 22:22:25,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 22:22:25,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 22:22:25,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 22:22:25,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 22:22:25,558 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-19 22:22:25,558 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-19 22:22:25,559 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-19 22:22:25,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 22:22:25,559 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 22:22:25,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 22:22:25,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 22:22:25,560 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 22:22:25,560 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 22:22:25,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 22:22:25,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 22:22:25,561 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 22:22:25,561 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 22:22:25,561 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-19 22:22:25,561 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-19 22:22:25,561 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 22:22:25,562 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 22:22:25,562 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 22:22:25,562 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-19 22:22:25,562 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ff439c9da308e48e314eaeb6f620d0560f5430b3c601570b5afd8d635a5b965 [2022-07-19 22:22:25,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 22:22:25,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 22:22:25,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 22:22:25,865 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 22:22:25,865 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 22:22:25,866 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i [2022-07-19 22:22:25,926 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26294ea75/b635349bccc3495eb2f614417f7206c6/FLAG659e1e675 [2022-07-19 22:22:26,601 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 22:22:26,603 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i [2022-07-19 22:22:26,633 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26294ea75/b635349bccc3495eb2f614417f7206c6/FLAG659e1e675 [2022-07-19 22:22:26,798 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26294ea75/b635349bccc3495eb2f614417f7206c6 [2022-07-19 22:22:26,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 22:22:26,802 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 22:22:26,804 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 22:22:26,804 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 22:22:26,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 22:22:26,807 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:22:26" (1/1) ... [2022-07-19 22:22:26,808 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41b580c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:22:26, skipping insertion in model container [2022-07-19 22:22:26,809 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:22:26" (1/1) ... [2022-07-19 22:22:26,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 22:22:26,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 22:22:27,068 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/memset_using_uint64_harness.i[4493,4506] [2022-07-19 22:22:27,073 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/memset_using_uint64_harness.i[4553,4566] [2022-07-19 22:22:27,860 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:22:27,861 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:22:27,861 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:22:27,862 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:22:27,863 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:22:27,887 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:22:27,888 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:22:27,890 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:22:27,891 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:22:27,893 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:22:27,894 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:22:27,895 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:22:27,896 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:22:28,047 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 22:22:28,050 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 22:22:28,052 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 22:22:28,053 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 22:22:28,054 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 22:22:28,055 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 22:22:28,056 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 22:22:28,058 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 22:22:28,058 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 22:22:28,060 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 22:22:28,104 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.ArithmeticException: BigInteger out of int range at java.base/java.math.BigInteger.intValueExact(BigInteger.java:4784) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.checkIfNecessaryMemoryModelAdaption(CHandler.java:1009) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:968) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:279) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1384) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:249) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.translateInitializer(CHandler.java:2978) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleIASTDeclarator(CHandler.java:2836) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2138) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:143) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1135) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:211) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1470) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2361) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:601) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-19 22:22:28,108 INFO L158 Benchmark]: Toolchain (without parser) took 1305.55ms. Allocated memory was 54.5MB in the beginning and 73.4MB in the end (delta: 18.9MB). Free memory was 28.7MB in the beginning and 38.0MB in the end (delta: -9.3MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. [2022-07-19 22:22:28,110 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 54.5MB. Free memory was 36.5MB in the beginning and 36.5MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 22:22:28,112 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1302.86ms. Allocated memory was 54.5MB in the beginning and 73.4MB in the end (delta: 18.9MB). Free memory was 28.5MB in the beginning and 38.0MB in the end (delta: -9.5MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. [2022-07-19 22:22:28,113 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 54.5MB. Free memory was 36.5MB in the beginning and 36.5MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1302.86ms. Allocated memory was 54.5MB in the beginning and 73.4MB in the end (delta: 18.9MB). Free memory was 28.5MB in the beginning and 38.0MB in the end (delta: -9.5MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: ArithmeticException: BigInteger out of int range de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: ArithmeticException: BigInteger out of int range: java.base/java.math.BigInteger.intValueExact(BigInteger.java:4784) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: ArithmeticException: BigInteger out of int range