./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 f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/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-?-f4b24e3 [2022-07-13 22:58:48,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:58:48,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:58:48,296 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:58:48,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:58:48,298 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:58:48,300 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:58:48,302 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:58:48,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:58:48,309 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:58:48,310 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:58:48,312 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:58:48,312 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:58:48,314 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:58:48,315 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:58:48,319 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:58:48,320 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:58:48,322 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:58:48,323 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:58:48,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:58:48,332 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:58:48,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:58:48,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:58:48,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:58:48,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:58:48,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:58:48,338 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:58:48,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:58:48,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:58:48,340 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:58:48,341 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:58:48,341 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:58:48,343 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:58:48,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:58:48,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:58:48,345 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:58:48,345 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:58:48,345 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:58:48,345 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:58:48,346 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:58:48,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:58:48,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:58:48,349 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-13 22:58:48,378 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:58:48,379 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:58:48,379 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:58:48,379 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:58:48,380 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:58:48,380 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:58:48,381 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:58:48,381 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:58:48,381 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:58:48,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:58:48,382 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:58:48,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:58:48,382 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:58:48,382 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:58:48,383 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:58:48,383 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:58:48,383 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:58:48,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:58:48,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:58:48,384 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:58:48,384 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:58:48,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:58:48,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:58:48,384 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:58:48,385 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:58:48,385 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:58:48,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:58:48,385 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:58:48,385 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:58:48,386 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:58:48,386 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ff439c9da308e48e314eaeb6f620d0560f5430b3c601570b5afd8d635a5b965 [2022-07-13 22:58:48,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:58:48,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:58:48,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:58:48,627 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:58:48,628 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:58:48,629 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i [2022-07-13 22:58:48,694 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f7c4da77/b76f2d4796a14495a2cbafb6bd1c14fb/FLAG7c826516e [2022-07-13 22:58:49,298 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:58:49,299 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i [2022-07-13 22:58:49,329 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f7c4da77/b76f2d4796a14495a2cbafb6bd1c14fb/FLAG7c826516e [2022-07-13 22:58:49,697 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f7c4da77/b76f2d4796a14495a2cbafb6bd1c14fb [2022-07-13 22:58:49,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:58:49,700 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:58:49,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:58:49,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:58:49,704 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:58:49,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:58:49" (1/1) ... [2022-07-13 22:58:49,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34f91309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:58:49, skipping insertion in model container [2022-07-13 22:58:49,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:58:49" (1/1) ... [2022-07-13 22:58:49,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:58:49,783 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:58:49,992 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] [2022-07-13 22:58:49,997 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] [2022-07-13 22:58:50,477 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:50,478 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:50,478 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:50,479 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:50,480 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:50,490 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:50,491 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:50,493 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:50,493 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:50,495 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:50,495 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:50,496 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:50,496 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:50,622 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:58:50,623 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:58:50,624 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:58:50,625 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:58:50,626 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:58:50,627 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:58:50,628 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:58:50,628 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:58:50,629 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:58:50,629 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:58:50,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:58:50,693 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:58:50,720 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] [2022-07-13 22:58:50,722 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] [2022-07-13 22:58:50,776 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:50,782 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:50,783 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:50,784 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:50,786 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:50,793 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:50,795 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:50,796 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:50,797 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:50,799 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:50,801 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:50,802 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:50,802 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:58:50,814 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:58:50,818 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:58:50,819 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:58:50,819 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:58:50,820 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:58:50,821 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:58:50,822 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:58:50,822 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:58:50,823 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:58:50,824 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:58:50,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:58:51,024 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:58:51,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:58:51 WrapperNode [2022-07-13 22:58:51,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:58:51,026 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:58:51,026 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:58:51,026 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:58:51,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:58:51" (1/1) ... [2022-07-13 22:58:51,104 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:58:51" (1/1) ... [2022-07-13 22:58:51,137 INFO L137 Inliner]: procedures = 592, calls = 625, calls flagged for inlining = 38, calls inlined = 6, statements flattened = 123 [2022-07-13 22:58:51,138 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:58:51,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:58:51,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:58:51,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:58:51,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:58:51" (1/1) ... [2022-07-13 22:58:51,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:58:51" (1/1) ... [2022-07-13 22:58:51,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:58:51" (1/1) ... [2022-07-13 22:58:51,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:58:51" (1/1) ... [2022-07-13 22:58:51,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:58:51" (1/1) ... [2022-07-13 22:58:51,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:58:51" (1/1) ... [2022-07-13 22:58:51,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:58:51" (1/1) ... [2022-07-13 22:58:51,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:58:51,193 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:58:51,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:58:51,194 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:58:51,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:58:51" (1/1) ... [2022-07-13 22:58:51,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:58:51,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:58:51,229 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 22:58:51,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 22:58:51,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:58:51,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:58:51,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-13 22:58:51,288 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-13 22:58:51,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:58:51,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:58:51,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:58:51,290 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-13 22:58:51,290 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-13 22:58:51,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:58:51,291 INFO L130 BoogieDeclarations]: Found specification of procedure assert_all_bytes_are [2022-07-13 22:58:51,291 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_all_bytes_are [2022-07-13 22:58:51,292 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-13 22:58:51,292 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-13 22:58:51,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:58:51,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:58:51,448 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:58:51,449 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:58:51,867 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:58:51,873 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:58:51,873 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 22:58:51,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:58:51 BoogieIcfgContainer [2022-07-13 22:58:51,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:58:51,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:58:51,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:58:51,879 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:58:51,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:58:49" (1/3) ... [2022-07-13 22:58:51,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12fca51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:58:51, skipping insertion in model container [2022-07-13 22:58:51,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:58:51" (2/3) ... [2022-07-13 22:58:51,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12fca51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:58:51, skipping insertion in model container [2022-07-13 22:58:51,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:58:51" (3/3) ... [2022-07-13 22:58:51,882 INFO L111 eAbstractionObserver]: Analyzing ICFG memset_using_uint64_harness.i [2022-07-13 22:58:51,893 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:58:51,893 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:58:51,932 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:58:51,938 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@1d4c8077, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@ed68a2b [2022-07-13 22:58:51,938 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 22:58:51,942 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) [2022-07-13 22:58:51,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-13 22:58:51,949 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:58:51,949 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] [2022-07-13 22:58:51,950 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:58:51,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:58:51,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1569633619, now seen corresponding path program 1 times [2022-07-13 22:58:51,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:58:51,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169672375] [2022-07-13 22:58:51,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:58:51,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:58:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:52,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:58:52,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:52,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:58:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:52,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:58:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:52,396 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 22:58:52,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:58:52,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169672375] [2022-07-13 22:58:52,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169672375] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:58:52,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:58:52,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 22:58:52,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056892213] [2022-07-13 22:58:52,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:58:52,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 22:58:52,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:58:52,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 22:58:52,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 22:58:52,439 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) [2022-07-13 22:58:52,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:58:52,459 INFO L93 Difference]: Finished difference Result 137 states and 191 transitions. [2022-07-13 22:58:52,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 22:58:52,462 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 [2022-07-13 22:58:52,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:58:52,468 INFO L225 Difference]: With dead ends: 137 [2022-07-13 22:58:52,468 INFO L226 Difference]: Without dead ends: 62 [2022-07-13 22:58:52,471 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 [2022-07-13 22:58:52,474 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 [2022-07-13 22:58:52,474 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] [2022-07-13 22:58:52,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-07-13 22:58:52,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-07-13 22:58:52,502 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) [2022-07-13 22:58:52,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 80 transitions. [2022-07-13 22:58:52,505 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 80 transitions. Word has length 45 [2022-07-13 22:58:52,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:58:52,507 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 80 transitions. [2022-07-13 22:58:52,507 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) [2022-07-13 22:58:52,507 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 80 transitions. [2022-07-13 22:58:52,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-13 22:58:52,509 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:58:52,509 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] [2022-07-13 22:58:52,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:58:52,509 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:58:52,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:58:52,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1695278887, now seen corresponding path program 1 times [2022-07-13 22:58:52,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:58:52,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856071758] [2022-07-13 22:58:52,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:58:52,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:58:52,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:52,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:58:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:52,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:58:52,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:52,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:58:52,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:52,706 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 22:58:52,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:58:52,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856071758] [2022-07-13 22:58:52,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856071758] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:58:52,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:58:52,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:58:52,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006333757] [2022-07-13 22:58:52,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:58:52,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:58:52,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:58:52,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:58:52,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:58:52,714 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) [2022-07-13 22:58:52,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:58:52,801 INFO L93 Difference]: Finished difference Result 122 states and 157 transitions. [2022-07-13 22:58:52,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:58:52,802 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 [2022-07-13 22:58:52,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:58:52,804 INFO L225 Difference]: With dead ends: 122 [2022-07-13 22:58:52,806 INFO L226 Difference]: Without dead ends: 75 [2022-07-13 22:58:52,806 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 [2022-07-13 22:58:52,808 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 [2022-07-13 22:58:52,809 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] [2022-07-13 22:58:52,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-07-13 22:58:52,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2022-07-13 22:58:52,817 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) [2022-07-13 22:58:52,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2022-07-13 22:58:52,819 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 45 [2022-07-13 22:58:52,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:58:52,819 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2022-07-13 22:58:52,820 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) [2022-07-13 22:58:52,820 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2022-07-13 22:58:52,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-13 22:58:52,821 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:58:52,822 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] [2022-07-13 22:58:52,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 22:58:52,823 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:58:52,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:58:52,823 INFO L85 PathProgramCache]: Analyzing trace with hash -910744667, now seen corresponding path program 1 times [2022-07-13 22:58:52,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:58:52,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648673104] [2022-07-13 22:58:52,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:58:52,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:58:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:53,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:58:53,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:53,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:58:53,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:53,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:58:53,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:53,152 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 22:58:53,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:58:53,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648673104] [2022-07-13 22:58:53,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648673104] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:58:53,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:58:53,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:58:53,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776924734] [2022-07-13 22:58:53,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:58:53,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:58:53,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:58:53,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:58:53,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:58:53,156 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) [2022-07-13 22:58:53,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:58:53,404 INFO L93 Difference]: Finished difference Result 169 states and 208 transitions. [2022-07-13 22:58:53,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:58:53,405 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 [2022-07-13 22:58:53,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:58:53,409 INFO L225 Difference]: With dead ends: 169 [2022-07-13 22:58:53,409 INFO L226 Difference]: Without dead ends: 120 [2022-07-13 22:58:53,413 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 [2022-07-13 22:58:53,417 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 [2022-07-13 22:58:53,418 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] [2022-07-13 22:58:53,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-07-13 22:58:53,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 79. [2022-07-13 22:58:53,439 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) [2022-07-13 22:58:53,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 98 transitions. [2022-07-13 22:58:53,442 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 98 transitions. Word has length 45 [2022-07-13 22:58:53,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:58:53,443 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 98 transitions. [2022-07-13 22:58:53,443 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) [2022-07-13 22:58:53,443 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 98 transitions. [2022-07-13 22:58:53,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-13 22:58:53,445 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:58:53,445 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] [2022-07-13 22:58:53,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 22:58:53,446 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:58:53,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:58:53,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1578784295, now seen corresponding path program 1 times [2022-07-13 22:58:53,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:58:53,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616539609] [2022-07-13 22:58:53,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:58:53,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:58:53,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:53,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:58:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:53,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:58:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:53,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:58:53,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:53,738 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 22:58:53,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:58:53,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616539609] [2022-07-13 22:58:53,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616539609] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:58:53,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:58:53,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:58:53,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977437896] [2022-07-13 22:58:53,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:58:53,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:58:53,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:58:53,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:58:53,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:58:53,742 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) [2022-07-13 22:58:53,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:58:53,838 INFO L93 Difference]: Finished difference Result 85 states and 103 transitions. [2022-07-13 22:58:53,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:58:53,839 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 [2022-07-13 22:58:53,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:58:53,841 INFO L225 Difference]: With dead ends: 85 [2022-07-13 22:58:53,841 INFO L226 Difference]: Without dead ends: 83 [2022-07-13 22:58:53,841 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 [2022-07-13 22:58:53,847 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 [2022-07-13 22:58:53,848 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] [2022-07-13 22:58:53,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-07-13 22:58:53,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-07-13 22:58:53,863 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) [2022-07-13 22:58:53,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 101 transitions. [2022-07-13 22:58:53,864 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 101 transitions. Word has length 45 [2022-07-13 22:58:53,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:58:53,865 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 101 transitions. [2022-07-13 22:58:53,865 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) [2022-07-13 22:58:53,866 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 101 transitions. [2022-07-13 22:58:53,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-13 22:58:53,872 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:58:53,872 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] [2022-07-13 22:58:53,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 22:58:53,873 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:58:53,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:58:53,873 INFO L85 PathProgramCache]: Analyzing trace with hash -116213960, now seen corresponding path program 1 times [2022-07-13 22:58:53,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:58:53,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120900903] [2022-07-13 22:58:53,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:58:53,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:58:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:54,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:58:54,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:54,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:58:54,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:54,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:58:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:54,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 22:58:54,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:54,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 22:58:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:54,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 22:58:54,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:54,202 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 22:58:54,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:58:54,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120900903] [2022-07-13 22:58:54,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120900903] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:58:54,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352232091] [2022-07-13 22:58:54,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:58:54,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:58:54,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:58:54,207 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:58:54,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 22:58:54,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:54,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 22:58:54,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:58:54,670 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 22:58:54,670 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:58:54,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352232091] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:58:54,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:58:54,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 12 [2022-07-13 22:58:54,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40090323] [2022-07-13 22:58:54,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:58:54,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:58:54,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:58:54,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:58:54,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-13 22:58:54,673 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) [2022-07-13 22:58:54,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:58:54,755 INFO L93 Difference]: Finished difference Result 144 states and 174 transitions. [2022-07-13 22:58:54,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:58:54,756 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 [2022-07-13 22:58:54,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:58:54,757 INFO L225 Difference]: With dead ends: 144 [2022-07-13 22:58:54,757 INFO L226 Difference]: Without dead ends: 116 [2022-07-13 22:58:54,758 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 [2022-07-13 22:58:54,758 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 [2022-07-13 22:58:54,759 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] [2022-07-13 22:58:54,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-07-13 22:58:54,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2022-07-13 22:58:54,789 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) [2022-07-13 22:58:54,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 141 transitions. [2022-07-13 22:58:54,793 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 141 transitions. Word has length 62 [2022-07-13 22:58:54,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:58:54,793 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 141 transitions. [2022-07-13 22:58:54,794 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) [2022-07-13 22:58:54,794 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 141 transitions. [2022-07-13 22:58:54,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-13 22:58:54,796 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:58:54,796 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] [2022-07-13 22:58:54,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 22:58:55,019 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 [2022-07-13 22:58:55,020 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:58:55,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:58:55,020 INFO L85 PathProgramCache]: Analyzing trace with hash -983473925, now seen corresponding path program 1 times [2022-07-13 22:58:55,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:58:55,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266801557] [2022-07-13 22:58:55,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:58:55,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:58:55,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:55,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:58:55,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:55,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:58:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:55,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 22:58:55,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:55,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 22:58:55,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:55,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 22:58:55,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:55,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:58:55,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:55,147 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 22:58:55,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:58:55,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266801557] [2022-07-13 22:58:55,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266801557] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:58:55,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:58:55,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:58:55,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035621847] [2022-07-13 22:58:55,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:58:55,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:58:55,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:58:55,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:58:55,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:58:55,150 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) [2022-07-13 22:58:55,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:58:55,168 INFO L93 Difference]: Finished difference Result 186 states and 227 transitions. [2022-07-13 22:58:55,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:58:55,168 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 [2022-07-13 22:58:55,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:58:55,169 INFO L225 Difference]: With dead ends: 186 [2022-07-13 22:58:55,169 INFO L226 Difference]: Without dead ends: 116 [2022-07-13 22:58:55,170 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 [2022-07-13 22:58:55,170 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 [2022-07-13 22:58:55,171 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] [2022-07-13 22:58:55,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-07-13 22:58:55,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2022-07-13 22:58:55,178 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) [2022-07-13 22:58:55,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 142 transitions. [2022-07-13 22:58:55,179 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 142 transitions. Word has length 63 [2022-07-13 22:58:55,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:58:55,179 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 142 transitions. [2022-07-13 22:58:55,179 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) [2022-07-13 22:58:55,180 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 142 transitions. [2022-07-13 22:58:55,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 22:58:55,180 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:58:55,180 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] [2022-07-13 22:58:55,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 22:58:55,181 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:58:55,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:58:55,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1785268669, now seen corresponding path program 1 times [2022-07-13 22:58:55,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:58:55,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901592898] [2022-07-13 22:58:55,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:58:55,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:58:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:55,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:58:55,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:55,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:58:55,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:55,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:58:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:55,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 22:58:55,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:55,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:58:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:55,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-13 22:58:55,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:55,447 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 22:58:55,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:58:55,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901592898] [2022-07-13 22:58:55,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901592898] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:58:55,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666404302] [2022-07-13 22:58:55,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:58:55,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:58:55,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:58:55,452 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:58:55,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 22:58:55,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:55,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 22:58:55,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:58:55,813 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 22:58:55,813 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:58:55,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666404302] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:58:55,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:58:55,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 13 [2022-07-13 22:58:55,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044970609] [2022-07-13 22:58:55,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:58:55,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:58:55,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:58:55,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:58:55,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-13 22:58:55,815 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) [2022-07-13 22:58:55,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:58:55,910 INFO L93 Difference]: Finished difference Result 137 states and 163 transitions. [2022-07-13 22:58:55,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:58:55,911 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 [2022-07-13 22:58:55,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:58:55,912 INFO L225 Difference]: With dead ends: 137 [2022-07-13 22:58:55,912 INFO L226 Difference]: Without dead ends: 79 [2022-07-13 22:58:55,912 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 [2022-07-13 22:58:55,913 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 [2022-07-13 22:58:55,913 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] [2022-07-13 22:58:55,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-07-13 22:58:55,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2022-07-13 22:58:55,919 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) [2022-07-13 22:58:55,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 95 transitions. [2022-07-13 22:58:55,919 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 95 transitions. Word has length 66 [2022-07-13 22:58:55,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:58:55,920 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 95 transitions. [2022-07-13 22:58:55,920 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) [2022-07-13 22:58:55,920 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 95 transitions. [2022-07-13 22:58:55,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 22:58:55,921 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:58:55,921 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] [2022-07-13 22:58:55,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 22:58:56,146 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 [2022-07-13 22:58:56,146 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:58:56,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:58:56,147 INFO L85 PathProgramCache]: Analyzing trace with hash 168968953, now seen corresponding path program 1 times [2022-07-13 22:58:56,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:58:56,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070074139] [2022-07-13 22:58:56,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:58:56,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:58:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:56,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:58:56,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:56,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:58:56,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:56,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 22:58:56,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:56,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:58:56,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:56,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 22:58:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:56,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:58:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:56,276 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-13 22:58:56,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:58:56,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070074139] [2022-07-13 22:58:56,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070074139] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:58:56,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:58:56,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 22:58:56,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744565813] [2022-07-13 22:58:56,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:58:56,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:58:56,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:58:56,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:58:56,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:58:56,279 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) [2022-07-13 22:58:56,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:58:56,372 INFO L93 Difference]: Finished difference Result 131 states and 157 transitions. [2022-07-13 22:58:56,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 22:58:56,373 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 [2022-07-13 22:58:56,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:58:56,380 INFO L225 Difference]: With dead ends: 131 [2022-07-13 22:58:56,380 INFO L226 Difference]: Without dead ends: 95 [2022-07-13 22:58:56,381 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 [2022-07-13 22:58:56,381 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 [2022-07-13 22:58:56,381 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] [2022-07-13 22:58:56,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-07-13 22:58:56,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 81. [2022-07-13 22:58:56,387 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) [2022-07-13 22:58:56,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 97 transitions. [2022-07-13 22:58:56,388 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 97 transitions. Word has length 65 [2022-07-13 22:58:56,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:58:56,388 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 97 transitions. [2022-07-13 22:58:56,389 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) [2022-07-13 22:58:56,389 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 97 transitions. [2022-07-13 22:58:56,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 22:58:56,389 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:58:56,390 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] [2022-07-13 22:58:56,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 22:58:56,390 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:58:56,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:58:56,390 INFO L85 PathProgramCache]: Analyzing trace with hash 231008567, now seen corresponding path program 1 times [2022-07-13 22:58:56,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:58:56,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971167247] [2022-07-13 22:58:56,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:58:56,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:58:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:56,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:58:56,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:56,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:58:56,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:56,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 22:58:56,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:56,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:58:56,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:56,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 22:58:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:56,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:58:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:56,620 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 22:58:56,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:58:56,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971167247] [2022-07-13 22:58:56,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971167247] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:58:56,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766250092] [2022-07-13 22:58:56,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:58:56,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:58:56,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:58:56,624 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:58:56,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 22:58:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:57,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 37 conjunts are in the unsatisfiable core [2022-07-13 22:58:57,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:58:57,382 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-13 22:58:57,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:58:57,770 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 22:58:57,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766250092] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:58:57,770 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:58:57,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14, 11] total 25 [2022-07-13 22:58:57,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029212084] [2022-07-13 22:58:57,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:58:57,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-13 22:58:57,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:58:57,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-13 22:58:57,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2022-07-13 22:58:57,773 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) [2022-07-13 22:58:58,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:58:58,812 INFO L93 Difference]: Finished difference Result 189 states and 226 transitions. [2022-07-13 22:58:58,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:58:58,812 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 [2022-07-13 22:58:58,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:58:58,813 INFO L225 Difference]: With dead ends: 189 [2022-07-13 22:58:58,813 INFO L226 Difference]: Without dead ends: 134 [2022-07-13 22:58:58,814 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 [2022-07-13 22:58:58,814 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 [2022-07-13 22:58:58,815 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] [2022-07-13 22:58:58,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-07-13 22:58:58,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 88. [2022-07-13 22:58:58,826 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) [2022-07-13 22:58:58,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 106 transitions. [2022-07-13 22:58:58,826 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 106 transitions. Word has length 65 [2022-07-13 22:58:58,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:58:58,827 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 106 transitions. [2022-07-13 22:58:58,827 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) [2022-07-13 22:58:58,827 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 106 transitions. [2022-07-13 22:58:58,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 22:58:58,830 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:58:58,830 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] [2022-07-13 22:58:58,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 22:58:59,051 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 [2022-07-13 22:58:59,052 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:58:59,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:58:59,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1140798731, now seen corresponding path program 1 times [2022-07-13 22:58:59,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:58:59,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246247199] [2022-07-13 22:58:59,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:58:59,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:58:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:59,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:58:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:59,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:58:59,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:59,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 22:58:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:59,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:58:59,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:59,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 22:58:59,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:59,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:58:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:59,297 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 22:58:59,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:58:59,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246247199] [2022-07-13 22:58:59,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246247199] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:58:59,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906603301] [2022-07-13 22:58:59,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:58:59,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:58:59,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:58:59,300 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:58:59,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 22:58:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:58:59,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 38 conjunts are in the unsatisfiable core [2022-07-13 22:58:59,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:58:59,918 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-13 22:58:59,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:59:00,323 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 22:59:00,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906603301] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:59:00,323 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:59:00,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16, 13] total 29 [2022-07-13 22:59:00,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093671214] [2022-07-13 22:59:00,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:59:00,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-13 22:59:00,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:59:00,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-13 22:59:00,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=710, Unknown=0, NotChecked=0, Total=812 [2022-07-13 22:59:00,325 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) [2022-07-13 22:59:01,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:59:01,441 INFO L93 Difference]: Finished difference Result 177 states and 213 transitions. [2022-07-13 22:59:01,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-13 22:59:01,441 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 [2022-07-13 22:59:01,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:59:01,442 INFO L225 Difference]: With dead ends: 177 [2022-07-13 22:59:01,442 INFO L226 Difference]: Without dead ends: 124 [2022-07-13 22:59:01,443 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 [2022-07-13 22:59:01,444 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 [2022-07-13 22:59:01,444 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] [2022-07-13 22:59:01,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-07-13 22:59:01,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 98. [2022-07-13 22:59:01,453 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) [2022-07-13 22:59:01,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 116 transitions. [2022-07-13 22:59:01,454 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 116 transitions. Word has length 65 [2022-07-13 22:59:01,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:59:01,454 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 116 transitions. [2022-07-13 22:59:01,455 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) [2022-07-13 22:59:01,455 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 116 transitions. [2022-07-13 22:59:01,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 22:59:01,455 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:59:01,456 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] [2022-07-13 22:59:01,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 22:59:01,679 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 [2022-07-13 22:59:01,679 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:59:01,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:59:01,680 INFO L85 PathProgramCache]: Analyzing trace with hash -216148949, now seen corresponding path program 1 times [2022-07-13 22:59:01,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:59:01,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839013991] [2022-07-13 22:59:01,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:59:01,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:59:01,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:59:02,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:59:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:59:02,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:59:02,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:59:02,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 22:59:02,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:59:02,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:59:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:59:02,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 22:59:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:59:02,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:59:02,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:59:03,033 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 22:59:03,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:59:03,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839013991] [2022-07-13 22:59:03,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839013991] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:59:03,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657198835] [2022-07-13 22:59:03,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:59:03,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:59:03,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:59:03,036 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:59:03,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 22:59:03,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:59:03,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 103 conjunts are in the unsatisfiable core [2022-07-13 22:59:03,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:59:03,397 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 [2022-07-13 22:59:03,683 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 41 [2022-07-13 22:59:03,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:59:03,692 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 [2022-07-13 22:59:03,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:59:03,717 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 [2022-07-13 22:59:05,117 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 [2022-07-13 22:59:32,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:59:32,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:59:32,871 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 22:59:32,872 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 [2022-07-13 22:59:33,056 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 22:59:33,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:59:33,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657198835] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:59:33,701 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:59:33,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23] total 40 [2022-07-13 22:59:33,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023448344] [2022-07-13 22:59:33,701 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:59:33,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-07-13 22:59:33,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:59:33,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-07-13 22:59:33,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1738, Unknown=3, NotChecked=0, Total=1892 [2022-07-13 22:59:33,703 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) [2022-07-13 22:59:45,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:59:45,421 INFO L93 Difference]: Finished difference Result 200 states and 232 transitions. [2022-07-13 22:59:45,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-13 22:59:45,422 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 [2022-07-13 22:59:45,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:59:45,424 INFO L225 Difference]: With dead ends: 200 [2022-07-13 22:59:45,424 INFO L226 Difference]: Without dead ends: 198 [2022-07-13 22:59:45,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 58 SyntacticMatches, 8 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 35.5s TimeCoverageRelationStatistics Valid=380, Invalid=3907, Unknown=3, NotChecked=0, Total=4290 [2022-07-13 22:59:45,426 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 [2022-07-13 22:59:45,426 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] [2022-07-13 22:59:45,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-07-13 22:59:45,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 173. [2022-07-13 22:59:45,447 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) [2022-07-13 22:59:45,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 200 transitions. [2022-07-13 22:59:45,448 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 200 transitions. Word has length 65 [2022-07-13 22:59:45,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:59:45,448 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 200 transitions. [2022-07-13 22:59:45,448 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) [2022-07-13 22:59:45,449 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 200 transitions. [2022-07-13 22:59:45,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 22:59:45,449 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:59:45,450 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] [2022-07-13 22:59:45,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 22:59:45,659 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 [2022-07-13 22:59:45,659 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:59:45,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:59:45,660 INFO L85 PathProgramCache]: Analyzing trace with hash -725622039, now seen corresponding path program 1 times [2022-07-13 22:59:45,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:59:45,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398976573] [2022-07-13 22:59:45,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:59:45,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:59:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:59:45,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:59:45,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:59:45,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:59:45,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:59:45,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 22:59:45,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:59:45,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:59:45,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:59:45,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 22:59:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:59:45,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:59:45,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:59:45,895 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 22:59:45,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:59:45,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398976573] [2022-07-13 22:59:45,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398976573] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:59:45,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710382115] [2022-07-13 22:59:45,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:59:45,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:59:45,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:59:45,897 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:59:45,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 22:59:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:59:46,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 50 conjunts are in the unsatisfiable core [2022-07-13 22:59:46,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:59:46,480 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-13 22:59:46,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:59:47,099 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 22:59:47,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710382115] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:59:47,100 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:59:47,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 17] total 31 [2022-07-13 22:59:47,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789196919] [2022-07-13 22:59:47,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:59:47,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-13 22:59:47,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:59:47,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-13 22:59:47,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=803, Unknown=0, NotChecked=0, Total=930 [2022-07-13 22:59:47,101 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) [2022-07-13 22:59:48,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:59:48,264 INFO L93 Difference]: Finished difference Result 217 states and 248 transitions. [2022-07-13 22:59:48,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 22:59:48,264 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 [2022-07-13 22:59:48,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:59:48,266 INFO L225 Difference]: With dead ends: 217 [2022-07-13 22:59:48,266 INFO L226 Difference]: Without dead ends: 174 [2022-07-13 22:59:48,267 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 [2022-07-13 22:59:48,268 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 [2022-07-13 22:59:48,268 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] [2022-07-13 22:59:48,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-07-13 22:59:48,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 170. [2022-07-13 22:59:48,287 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) [2022-07-13 22:59:48,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 195 transitions. [2022-07-13 22:59:48,288 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 195 transitions. Word has length 65 [2022-07-13 22:59:48,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:59:48,289 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 195 transitions. [2022-07-13 22:59:48,289 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) [2022-07-13 22:59:48,289 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 195 transitions. [2022-07-13 22:59:48,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-13 22:59:48,290 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:59:48,290 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] [2022-07-13 22:59:48,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 22:59:48,495 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 [2022-07-13 22:59:48,496 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:59:48,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:59:48,496 INFO L85 PathProgramCache]: Analyzing trace with hash -372948043, now seen corresponding path program 2 times [2022-07-13 22:59:48,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:59:48,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2721625] [2022-07-13 22:59:48,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:59:48,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:59:48,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:59:54,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:59:54,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:59:54,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 22:59:54,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:59:54,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 22:59:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:59:54,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 22:59:54,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:59:54,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 22:59:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:59:54,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 22:59:54,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:59:54,634 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 22:59:54,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:59:54,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2721625] [2022-07-13 22:59:54,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2721625] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:59:54,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373995651] [2022-07-13 22:59:54,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:59:54,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:59:54,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:59:54,644 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:59:54,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 22:59:54,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 22:59:54,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:59:54,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 122 conjunts are in the unsatisfiable core [2022-07-13 22:59:54,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:59:54,957 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 [2022-07-13 22:59:55,319 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 [2022-07-13 22:59:55,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:59:55,327 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 [2022-07-13 22:59:55,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:59:55,353 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 [2022-07-13 22:59:55,676 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 [2022-07-13 22:59:55,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:59:55,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:59:55,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:59:55,683 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 [2022-07-13 22:59:55,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:59:55,751 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 96 treesize of output 38 [2022-07-13 22:59:57,604 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 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 [2022-07-13 22:59:57,663 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 [2022-07-13 22:59:57,734 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 [2022-07-13 22:59:57,816 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 [2022-07-13 22:59:57,891 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 [2022-07-13 22:59:57,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:59:57,961 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 [2022-07-13 22:59:58,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:59:58,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:59:58,265 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 [2022-07-13 23:00:43,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 23:00:43,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 23:00:43,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 23:00:43,781 INFO L356 Elim1Store]: treesize reduction 62, result has 10.1 percent of original size [2022-07-13 23:00:43,781 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 [2022-07-13 23:00:44,028 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 11 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 23:00:44,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 23:00:45,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373995651] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 23:00:45,001 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 23:00:45,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 26] total 45 [2022-07-13 23:00:45,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960414947] [2022-07-13 23:00:45,001 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 23:00:45,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-07-13 23:00:45,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:00:45,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-07-13 23:00:45,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=2249, Unknown=8, NotChecked=0, Total=2450 [2022-07-13 23:00:45,003 INFO L87 Difference]: Start difference. First operand 170 states and 195 transitions. Second operand has 45 states, 42 states have (on average 2.261904761904762) internal successors, (95), 41 states have internal predecessors, (95), 10 states have call successors, (13), 4 states have call predecessors, (13), 6 states have return successors, (12), 10 states have call predecessors, (12), 8 states have call successors, (12) [2022-07-13 23:00:57,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:00:57,734 INFO L93 Difference]: Finished difference Result 273 states and 322 transitions. [2022-07-13 23:00:57,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-13 23:00:57,734 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 42 states have (on average 2.261904761904762) internal successors, (95), 41 states have internal predecessors, (95), 10 states have call successors, (13), 4 states have call predecessors, (13), 6 states have return successors, (12), 10 states have call predecessors, (12), 8 states have call successors, (12) Word has length 67 [2022-07-13 23:00:57,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:00:57,736 INFO L225 Difference]: With dead ends: 273 [2022-07-13 23:00:57,736 INFO L226 Difference]: Without dead ends: 271 [2022-07-13 23:00:57,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 62 SyntacticMatches, 6 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1415 ImplicationChecksByTransitivity, 53.3s TimeCoverageRelationStatistics Valid=373, Invalid=4040, Unknown=9, NotChecked=0, Total=4422 [2022-07-13 23:00:57,738 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 341 mSDsluCounter, 2021 mSDsCounter, 0 mSdLazyCounter, 1627 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 2134 SdHoareTripleChecker+Invalid, 1993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 290 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-07-13 23:00:57,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 2134 Invalid, 1993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1627 Invalid, 0 Unknown, 290 Unchecked, 7.2s Time] [2022-07-13 23:00:57,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-07-13 23:00:57,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 231. [2022-07-13 23:00:57,764 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) [2022-07-13 23:00:57,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 266 transitions. [2022-07-13 23:00:57,765 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 266 transitions. Word has length 67 [2022-07-13 23:00:57,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:00:57,765 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 266 transitions. [2022-07-13 23:00:57,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 42 states have (on average 2.261904761904762) internal successors, (95), 41 states have internal predecessors, (95), 10 states have call successors, (13), 4 states have call predecessors, (13), 6 states have return successors, (12), 10 states have call predecessors, (12), 8 states have call successors, (12) [2022-07-13 23:00:57,766 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 266 transitions. [2022-07-13 23:00:57,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-13 23:00:57,767 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:00:57,767 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] [2022-07-13 23:00:57,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-13 23:00:57,987 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 [2022-07-13 23:00:57,987 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:00:57,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:00:57,988 INFO L85 PathProgramCache]: Analyzing trace with hash -820105559, now seen corresponding path program 2 times [2022-07-13 23:00:57,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:00:57,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615302240] [2022-07-13 23:00:57,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:00:57,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:00:58,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 23:00:58,041 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 23:00:58,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 23:00:58,130 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 23:00:58,130 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 23:00:58,131 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-13 23:00:58,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 23:00:58,135 INFO L356 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:00:58,139 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 23:00:58,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 11:00:58 BoogieIcfgContainer [2022-07-13 23:00:58,203 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 23:00:58,203 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 23:00:58,204 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 23:00:58,204 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 23:00:58,204 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:58:51" (3/4) ... [2022-07-13 23:00:58,207 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-13 23:00:58,207 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 23:00:58,208 INFO L158 Benchmark]: Toolchain (without parser) took 128507.59ms. Allocated memory was 96.5MB in the beginning and 264.2MB in the end (delta: 167.8MB). Free memory was 58.1MB in the beginning and 118.8MB in the end (delta: -60.7MB). Peak memory consumption was 106.2MB. Max. memory is 16.1GB. [2022-07-13 23:00:58,208 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 96.5MB. Free memory was 51.0MB in the beginning and 50.9MB in the end (delta: 38.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 23:00:58,209 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1323.71ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 57.9MB in the beginning and 72.1MB in the end (delta: -14.2MB). Peak memory consumption was 40.1MB. Max. memory is 16.1GB. [2022-07-13 23:00:58,209 INFO L158 Benchmark]: Boogie Procedure Inliner took 112.19ms. Allocated memory is still 117.4MB. Free memory was 72.1MB in the beginning and 67.3MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-13 23:00:58,209 INFO L158 Benchmark]: Boogie Preprocessor took 54.07ms. Allocated memory is still 117.4MB. Free memory was 67.3MB in the beginning and 64.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 23:00:58,209 INFO L158 Benchmark]: RCFGBuilder took 682.24ms. Allocated memory is still 117.4MB. Free memory was 64.7MB in the beginning and 72.7MB in the end (delta: -8.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-07-13 23:00:58,210 INFO L158 Benchmark]: TraceAbstraction took 126326.32ms. Allocated memory was 117.4MB in the beginning and 264.2MB in the end (delta: 146.8MB). Free memory was 72.0MB in the beginning and 119.8MB in the end (delta: -47.8MB). Peak memory consumption was 97.6MB. Max. memory is 16.1GB. [2022-07-13 23:00:58,210 INFO L158 Benchmark]: Witness Printer took 3.66ms. Allocated memory is still 264.2MB. Free memory was 119.8MB in the beginning and 118.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 23:00:58,211 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 96.5MB. Free memory was 51.0MB in the beginning and 50.9MB in the end (delta: 38.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1323.71ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 57.9MB in the beginning and 72.1MB in the end (delta: -14.2MB). Peak memory consumption was 40.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 112.19ms. Allocated memory is still 117.4MB. Free memory was 72.1MB in the beginning and 67.3MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.07ms. Allocated memory is still 117.4MB. Free memory was 67.3MB in the beginning and 64.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 682.24ms. Allocated memory is still 117.4MB. Free memory was 64.7MB in the beginning and 72.7MB in the end (delta: -8.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 126326.32ms. Allocated memory was 117.4MB in the beginning and 264.2MB in the end (delta: 146.8MB). Free memory was 72.0MB in the beginning and 119.8MB in the end (delta: -47.8MB). Peak memory consumption was 97.6MB. Max. memory is 16.1GB. * Witness Printer took 3.66ms. Allocated memory is still 264.2MB. Free memory was 119.8MB in the beginning and 118.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. 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: 126.2s, OverallIterations: 14, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 28.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2612 SdHoareTripleChecker+Valid, 13.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2570 mSDsluCounter, 8702 SdHoareTripleChecker+Invalid, 12.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 441 IncrementalHoareTripleChecker+Unchecked, 7572 mSDsCounter, 785 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5214 IncrementalHoareTripleChecker+Invalid, 6440 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 785 mSolverCounterUnsat, 1130 mSDtfsCounter, 5214 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1024 GetRequests, 693 SyntacticMatches, 32 SemanticMatches, 299 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3737 ImplicationChecksByTransitivity, 92.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=231occurred in iteration=13, InterpolantAutomatonStates: 159, 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, 1.7s SatisfiabilityAnalysisTime, 92.3s 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 [2022-07-13 23:00:58,428 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 [2022-07-13 23:00:58,457 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-?-f4b24e3 [2022-07-13 23:01:00,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 23:01:00,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 23:01:00,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 23:01:00,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 23:01:00,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 23:01:00,160 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 23:01:00,163 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 23:01:00,165 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 23:01:00,169 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 23:01:00,170 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 23:01:00,174 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 23:01:00,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 23:01:00,176 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 23:01:00,177 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 23:01:00,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 23:01:00,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 23:01:00,181 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 23:01:00,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 23:01:00,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 23:01:00,188 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 23:01:00,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 23:01:00,191 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 23:01:00,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 23:01:00,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 23:01:00,199 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 23:01:00,199 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 23:01:00,199 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 23:01:00,200 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 23:01:00,201 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 23:01:00,201 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 23:01:00,201 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 23:01:00,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 23:01:00,204 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 23:01:00,205 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 23:01:00,205 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 23:01:00,206 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 23:01:00,206 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 23:01:00,206 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 23:01:00,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 23:01:00,207 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 23:01:00,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 23:01:00,216 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-13 23:01:00,247 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 23:01:00,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 23:01:00,248 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 23:01:00,248 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 23:01:00,249 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 23:01:00,249 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 23:01:00,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 23:01:00,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 23:01:00,250 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 23:01:00,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 23:01:00,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 23:01:00,251 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 23:01:00,251 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 23:01:00,251 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 23:01:00,252 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-13 23:01:00,252 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-13 23:01:00,252 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-13 23:01:00,252 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 23:01:00,252 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 23:01:00,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 23:01:00,253 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 23:01:00,253 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 23:01:00,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 23:01:00,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 23:01:00,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 23:01:00,254 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 23:01:00,254 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 23:01:00,254 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-13 23:01:00,254 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-13 23:01:00,254 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 23:01:00,255 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 23:01:00,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 23:01:00,255 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-13 23:01:00,255 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ff439c9da308e48e314eaeb6f620d0560f5430b3c601570b5afd8d635a5b965 [2022-07-13 23:01:00,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 23:01:00,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 23:01:00,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 23:01:00,575 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 23:01:00,575 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 23:01:00,576 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i [2022-07-13 23:01:00,631 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7baf9d532/5a1883944e6942c8bf07a3d00a16a23a/FLAG31b950761 [2022-07-13 23:01:01,207 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 23:01:01,211 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i [2022-07-13 23:01:01,243 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7baf9d532/5a1883944e6942c8bf07a3d00a16a23a/FLAG31b950761 [2022-07-13 23:01:01,439 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7baf9d532/5a1883944e6942c8bf07a3d00a16a23a [2022-07-13 23:01:01,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 23:01:01,443 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 23:01:01,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 23:01:01,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 23:01:01,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 23:01:01,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:01:01" (1/1) ... [2022-07-13 23:01:01,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46259235 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:01:01, skipping insertion in model container [2022-07-13 23:01:01,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:01:01" (1/1) ... [2022-07-13 23:01:01,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 23:01:01,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 23:01:01,782 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] [2022-07-13 23:01:01,787 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] [2022-07-13 23:01:02,497 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 23:01:02,499 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 23:01:02,500 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 23:01:02,500 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 23:01:02,501 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 23:01:02,523 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 23:01:02,525 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 23:01:02,528 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 23:01:02,528 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 23:01:02,530 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 23:01:02,530 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 23:01:02,531 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 23:01:02,531 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 23:01:02,761 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 23:01:02,763 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 23:01:02,765 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 23:01:02,766 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 23:01:02,767 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 23:01:02,767 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 23:01:02,769 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 23:01:02,772 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 23:01:02,772 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 23:01:02,774 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 23:01:02,835 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) [2022-07-13 23:01:02,844 INFO L158 Benchmark]: Toolchain (without parser) took 1400.27ms. Allocated memory was 60.8MB in the beginning and 75.5MB in the end (delta: 14.7MB). Free memory was 34.2MB in the beginning and 38.7MB in the end (delta: -4.5MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2022-07-13 23:01:02,846 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 60.8MB. Free memory was 43.0MB in the beginning and 43.0MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 23:01:02,847 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1396.80ms. Allocated memory was 60.8MB in the beginning and 75.5MB in the end (delta: 14.7MB). Free memory was 34.1MB in the beginning and 38.7MB in the end (delta: -4.7MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2022-07-13 23:01:02,849 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 60.8MB. Free memory was 43.0MB in the beginning and 43.0MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1396.80ms. Allocated memory was 60.8MB in the beginning and 75.5MB in the end (delta: 14.7MB). Free memory was 34.1MB in the beginning and 38.7MB in the end (delta: -4.7MB). Peak memory consumption was 11.6MB. 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