./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 5b36d44f 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 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 10:18:30,358 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 10:18:30,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 10:18:30,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 10:18:30,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 10:18:30,411 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 10:18:30,412 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 10:18:30,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 10:18:30,416 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 10:18:30,420 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 10:18:30,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 10:18:30,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 10:18:30,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 10:18:30,423 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 10:18:30,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 10:18:30,427 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 10:18:30,428 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 10:18:30,429 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 10:18:30,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 10:18:30,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 10:18:30,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 10:18:30,437 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 10:18:30,438 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 10:18:30,439 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 10:18:30,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 10:18:30,444 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 10:18:30,444 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 10:18:30,445 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 10:18:30,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 10:18:30,446 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 10:18:30,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 10:18:30,447 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 10:18:30,448 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 10:18:30,449 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 10:18:30,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 10:18:30,450 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 10:18:30,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 10:18:30,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 10:18:30,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 10:18:30,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 10:18:30,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 10:18:30,454 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 10:18:30,480 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 10:18:30,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 10:18:30,481 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 10:18:30,481 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 10:18:30,482 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 10:18:30,482 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 10:18:30,482 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 10:18:30,482 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 10:18:30,483 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 10:18:30,483 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 10:18:30,483 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 10:18:30,484 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 10:18:30,484 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 10:18:30,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 10:18:30,484 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 10:18:30,484 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 10:18:30,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 10:18:30,485 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 10:18:30,485 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 10:18:30,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 10:18:30,485 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 10:18:30,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 10:18:30,486 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 10:18:30,486 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 10:18:30,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 10:18:30,486 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 10:18:30,486 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 10:18:30,486 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 10:18:30,487 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 10:18:30,487 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ff439c9da308e48e314eaeb6f620d0560f5430b3c601570b5afd8d635a5b965 [2021-11-07 10:18:30,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 10:18:30,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 10:18:30,728 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 10:18:30,730 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 10:18:30,731 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 10:18:30,732 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i [2021-11-07 10:18:30,782 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb523d97c/b1e3155224eb4a95866f0dea71aeacf5/FLAG44b0a6a4a [2021-11-07 10:18:31,383 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 10:18:31,384 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i [2021-11-07 10:18:31,417 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb523d97c/b1e3155224eb4a95866f0dea71aeacf5/FLAG44b0a6a4a [2021-11-07 10:18:31,805 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb523d97c/b1e3155224eb4a95866f0dea71aeacf5 [2021-11-07 10:18:31,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 10:18:31,810 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 10:18:31,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 10:18:31,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 10:18:31,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 10:18:31,815 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:18:31" (1/1) ... [2021-11-07 10:18:31,816 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fe2aaba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:18:31, skipping insertion in model container [2021-11-07 10:18:31,816 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:18:31" (1/1) ... [2021-11-07 10:18:31,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 10:18:31,900 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 10:18:32,235 WARN L228 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] [2021-11-07 10:18:32,241 WARN L228 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] [2021-11-07 10:18:32,263 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 10:18:32,267 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 10:18:32,690 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:32,696 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:32,698 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:32,699 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:32,701 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:32,718 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:32,719 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:32,723 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:32,725 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:32,729 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:32,732 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:32,733 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:32,734 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:32,873 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 10:18:32,875 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 10:18:32,877 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 10:18:32,878 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 10:18:32,880 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 10:18:32,882 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 10:18:32,883 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 10:18:32,884 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 10:18:32,885 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 10:18:32,885 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 10:18:32,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 10:18:32,938 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 10:18:32,957 WARN L228 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] [2021-11-07 10:18:32,957 WARN L228 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] [2021-11-07 10:18:32,959 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 10:18:32,960 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 10:18:33,010 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:33,011 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:33,011 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:33,013 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:33,013 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:33,023 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:33,024 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:33,025 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:33,025 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:33,027 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:33,027 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:33,028 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:33,028 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:33,049 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 10:18:33,050 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 10:18:33,051 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 10:18:33,051 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 10:18:33,052 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 10:18:33,052 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 10:18:33,053 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 10:18:33,053 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 10:18:33,054 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 10:18:33,054 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 10:18:33,088 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 10:18:33,194 INFO L208 MainTranslator]: Completed translation [2021-11-07 10:18:33,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:18:33 WrapperNode [2021-11-07 10:18:33,195 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 10:18:33,196 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 10:18:33,196 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 10:18:33,196 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 10:18:33,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:18:33" (1/1) ... [2021-11-07 10:18:33,245 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:18:33" (1/1) ... [2021-11-07 10:18:33,280 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 10:18:33,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 10:18:33,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 10:18:33,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 10:18:33,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:18:33" (1/1) ... [2021-11-07 10:18:33,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:18:33" (1/1) ... [2021-11-07 10:18:33,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:18:33" (1/1) ... [2021-11-07 10:18:33,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:18:33" (1/1) ... [2021-11-07 10:18:33,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:18:33" (1/1) ... [2021-11-07 10:18:33,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:18:33" (1/1) ... [2021-11-07 10:18:33,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:18:33" (1/1) ... [2021-11-07 10:18:33,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 10:18:33,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 10:18:33,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 10:18:33,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 10:18:33,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:18:33" (1/1) ... [2021-11-07 10:18:33,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 10:18:33,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:18:33,351 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) [2021-11-07 10:18:33,375 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 [2021-11-07 10:18:33,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 10:18:33,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 10:18:33,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 10:18:33,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 10:18:33,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 10:18:33,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 10:18:33,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 10:18:34,037 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 10:18:34,037 INFO L299 CfgBuilder]: Removed 36 assume(true) statements. [2021-11-07 10:18:34,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:18:34 BoogieIcfgContainer [2021-11-07 10:18:34,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 10:18:34,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 10:18:34,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 10:18:34,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 10:18:34,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 10:18:31" (1/3) ... [2021-11-07 10:18:34,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c08f585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:18:34, skipping insertion in model container [2021-11-07 10:18:34,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:18:33" (2/3) ... [2021-11-07 10:18:34,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c08f585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:18:34, skipping insertion in model container [2021-11-07 10:18:34,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:18:34" (3/3) ... [2021-11-07 10:18:34,047 INFO L111 eAbstractionObserver]: Analyzing ICFG memset_using_uint64_harness.i [2021-11-07 10:18:34,051 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 10:18:34,052 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-07 10:18:34,082 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 10:18:34,091 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 10:18:34,092 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-07 10:18:34,120 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 53 states have (on average 1.490566037735849) internal successors, (79), 56 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:34,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 10:18:34,127 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:18:34,128 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:18:34,129 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 10:18:34,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:18:34,138 INFO L85 PathProgramCache]: Analyzing trace with hash 546734931, now seen corresponding path program 1 times [2021-11-07 10:18:34,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:18:34,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109067705] [2021-11-07 10:18:34,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:18:34,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:18:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:18:34,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:18:34,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:18:34,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109067705] [2021-11-07 10:18:34,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109067705] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:18:34,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:18:34,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 10:18:34,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375397834] [2021-11-07 10:18:34,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:18:34,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 10:18:34,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:18:34,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 10:18:34,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 10:18:34,442 INFO L87 Difference]: Start difference. First operand has 57 states, 53 states have (on average 1.490566037735849) internal successors, (79), 56 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:34,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:18:34,458 INFO L93 Difference]: Finished difference Result 111 states and 154 transitions. [2021-11-07 10:18:34,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 10:18:34,460 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-07 10:18:34,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:18:34,465 INFO L225 Difference]: With dead ends: 111 [2021-11-07 10:18:34,466 INFO L226 Difference]: Without dead ends: 51 [2021-11-07 10:18:34,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 10:18:34,471 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.68ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 10:18:34,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.68ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 10:18:34,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-07 10:18:34,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-11-07 10:18:34,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 50 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:34,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2021-11-07 10:18:34,506 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 31 [2021-11-07 10:18:34,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:18:34,507 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2021-11-07 10:18:34,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:34,507 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2021-11-07 10:18:34,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 10:18:34,511 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:18:34,512 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:18:34,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 10:18:34,512 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 10:18:34,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:18:34,513 INFO L85 PathProgramCache]: Analyzing trace with hash 2045186899, now seen corresponding path program 1 times [2021-11-07 10:18:34,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:18:34,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481322483] [2021-11-07 10:18:34,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:18:34,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:18:34,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:18:34,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:18:34,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:18:34,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481322483] [2021-11-07 10:18:34,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481322483] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:18:34,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:18:34,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 10:18:34,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44391878] [2021-11-07 10:18:34,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:18:34,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:18:34,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:18:34,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:18:34,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:18:34,837 INFO L87 Difference]: Start difference. First operand 51 states and 62 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:34,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:18:34,900 INFO L93 Difference]: Finished difference Result 56 states and 67 transitions. [2021-11-07 10:18:34,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 10:18:34,901 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-07 10:18:34,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:18:34,903 INFO L225 Difference]: With dead ends: 56 [2021-11-07 10:18:34,903 INFO L226 Difference]: Without dead ends: 54 [2021-11-07 10:18:34,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.06ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:18:34,908 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 46 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.71ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.93ms IncrementalHoareTripleChecker+Time [2021-11-07 10:18:34,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 102 Invalid, 13 Unknown, 0 Unchecked, 5.71ms Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 27.93ms Time] [2021-11-07 10:18:34,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-07 10:18:34,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 49. [2021-11-07 10:18:34,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 47 states have (on average 1.2765957446808511) internal successors, (60), 48 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:34,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 60 transitions. [2021-11-07 10:18:34,925 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 60 transitions. Word has length 31 [2021-11-07 10:18:34,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:18:34,926 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 60 transitions. [2021-11-07 10:18:34,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:34,926 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 60 transitions. [2021-11-07 10:18:34,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-07 10:18:34,928 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:18:34,928 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:18:34,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 10:18:34,928 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 10:18:34,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:18:34,929 INFO L85 PathProgramCache]: Analyzing trace with hash 2131932046, now seen corresponding path program 1 times [2021-11-07 10:18:34,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:18:34,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817092037] [2021-11-07 10:18:34,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:18:34,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:18:35,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:18:35,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:18:35,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:18:35,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817092037] [2021-11-07 10:18:35,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817092037] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:18:35,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:18:35,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 10:18:35,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694324872] [2021-11-07 10:18:35,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:18:35,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 10:18:35,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:18:35,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 10:18:35,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:18:35,289 INFO L87 Difference]: Start difference. First operand 49 states and 60 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:35,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:18:35,360 INFO L93 Difference]: Finished difference Result 98 states and 117 transitions. [2021-11-07 10:18:35,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 10:18:35,361 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-07 10:18:35,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:18:35,364 INFO L225 Difference]: With dead ends: 98 [2021-11-07 10:18:35,364 INFO L226 Difference]: Without dead ends: 83 [2021-11-07 10:18:35,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.82ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 10:18:35,370 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 125 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.80ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.63ms IncrementalHoareTripleChecker+Time [2021-11-07 10:18:35,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 155 Invalid, 27 Unknown, 0 Unchecked, 4.80ms Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 31.63ms Time] [2021-11-07 10:18:35,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-11-07 10:18:35,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 75. [2021-11-07 10:18:35,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 73 states have (on average 1.3013698630136987) internal successors, (95), 74 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:35,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 95 transitions. [2021-11-07 10:18:35,385 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 95 transitions. Word has length 36 [2021-11-07 10:18:35,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:18:35,386 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 95 transitions. [2021-11-07 10:18:35,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:35,386 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 95 transitions. [2021-11-07 10:18:35,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-07 10:18:35,389 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:18:35,390 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:18:35,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 10:18:35,390 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 10:18:35,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:18:35,391 INFO L85 PathProgramCache]: Analyzing trace with hash 192927141, now seen corresponding path program 1 times [2021-11-07 10:18:35,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:18:35,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066356613] [2021-11-07 10:18:35,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:18:35,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:18:35,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:18:35,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:18:35,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:18:35,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066356613] [2021-11-07 10:18:35,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066356613] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:18:35,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:18:35,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 10:18:35,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082875232] [2021-11-07 10:18:35,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:18:35,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 10:18:35,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:18:35,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 10:18:35,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 10:18:35,506 INFO L87 Difference]: Start difference. First operand 75 states and 95 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:35,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:18:35,524 INFO L93 Difference]: Finished difference Result 118 states and 148 transitions. [2021-11-07 10:18:35,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 10:18:35,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-07 10:18:35,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:18:35,528 INFO L225 Difference]: With dead ends: 118 [2021-11-07 10:18:35,529 INFO L226 Difference]: Without dead ends: 77 [2021-11-07 10:18:35,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.24ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 10:18:35,534 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 1 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.41ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.52ms IncrementalHoareTripleChecker+Time [2021-11-07 10:18:35,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 112 Invalid, 7 Unknown, 0 Unchecked, 0.41ms Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 7.52ms Time] [2021-11-07 10:18:35,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-11-07 10:18:35,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2021-11-07 10:18:35,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 74 states have (on average 1.2972972972972974) internal successors, (96), 75 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:35,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 96 transitions. [2021-11-07 10:18:35,549 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 96 transitions. Word has length 37 [2021-11-07 10:18:35,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:18:35,550 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 96 transitions. [2021-11-07 10:18:35,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:35,551 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 96 transitions. [2021-11-07 10:18:35,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-07 10:18:35,552 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:18:35,552 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:18:35,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 10:18:35,553 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 10:18:35,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:18:35,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1686538128, now seen corresponding path program 1 times [2021-11-07 10:18:35,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:18:35,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146870875] [2021-11-07 10:18:35,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:18:35,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:18:35,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:18:35,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:18:35,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:18:35,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146870875] [2021-11-07 10:18:35,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146870875] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:18:35,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:18:35,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 10:18:35,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922297881] [2021-11-07 10:18:35,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:18:35,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 10:18:35,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:18:35,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 10:18:35,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:18:35,676 INFO L87 Difference]: Start difference. First operand 76 states and 96 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:35,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:18:35,719 INFO L93 Difference]: Finished difference Result 84 states and 103 transitions. [2021-11-07 10:18:35,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 10:18:35,719 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-07 10:18:35,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:18:35,720 INFO L225 Difference]: With dead ends: 84 [2021-11-07 10:18:35,720 INFO L226 Difference]: Without dead ends: 50 [2021-11-07 10:18:35,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.06ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 10:18:35,721 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 102 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.80ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.19ms IncrementalHoareTripleChecker+Time [2021-11-07 10:18:35,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 157 Invalid, 25 Unknown, 0 Unchecked, 0.80ms Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 24.19ms Time] [2021-11-07 10:18:35,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-07 10:18:35,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-11-07 10:18:35,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 48 states have (on average 1.25) internal successors, (60), 49 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:35,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2021-11-07 10:18:35,724 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 38 [2021-11-07 10:18:35,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:18:35,725 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2021-11-07 10:18:35,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:35,725 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2021-11-07 10:18:35,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-07 10:18:35,725 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:18:35,726 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:18:35,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 10:18:35,726 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 10:18:35,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:18:35,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1454626717, now seen corresponding path program 1 times [2021-11-07 10:18:35,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:18:35,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973789602] [2021-11-07 10:18:35,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:18:35,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:18:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:18:35,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 10:18:35,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:18:35,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973789602] [2021-11-07 10:18:35,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973789602] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:18:35,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:18:35,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 10:18:35,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684277866] [2021-11-07 10:18:35,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:18:35,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:18:35,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:18:35,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:18:35,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:18:35,803 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:35,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:18:35,857 INFO L93 Difference]: Finished difference Result 92 states and 104 transitions. [2021-11-07 10:18:35,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 10:18:35,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-07 10:18:35,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:18:35,858 INFO L225 Difference]: With dead ends: 92 [2021-11-07 10:18:35,859 INFO L226 Difference]: Without dead ends: 73 [2021-11-07 10:18:35,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.09ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:18:35,859 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 23 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.35ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.98ms IncrementalHoareTripleChecker+Time [2021-11-07 10:18:35,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 198 Invalid, 19 Unknown, 0 Unchecked, 0.35ms Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 49.98ms Time] [2021-11-07 10:18:35,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-11-07 10:18:35,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 52. [2021-11-07 10:18:35,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 50 states have (on average 1.24) internal successors, (62), 51 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:35,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2021-11-07 10:18:35,863 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 39 [2021-11-07 10:18:35,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:18:35,863 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2021-11-07 10:18:35,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:35,863 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2021-11-07 10:18:35,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-07 10:18:35,863 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:18:35,864 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:18:35,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 10:18:35,864 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 10:18:35,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:18:35,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1196461279, now seen corresponding path program 1 times [2021-11-07 10:18:35,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:18:35,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201944794] [2021-11-07 10:18:35,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:18:35,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:18:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:18:37,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:18:37,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:18:37,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201944794] [2021-11-07 10:18:37,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201944794] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 10:18:37,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246419784] [2021-11-07 10:18:37,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:18:37,865 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:18:37,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:18:37,867 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) [2021-11-07 10:18:37,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 10:18:38,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:18:38,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 103 conjunts are in the unsatisfiable core [2021-11-07 10:18:38,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:18:38,464 INFO L388 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 [2021-11-07 10:18:38,847 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 10:18:38,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-07 10:18:38,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-07 10:18:38,879 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 10:18:39,515 INFO L388 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 47 treesize of output 42 [2021-11-07 10:18:39,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:18:39,669 INFO L388 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 56 treesize of output 54 [2021-11-07 10:18:39,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:18:39,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:18:39,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:18:39,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 66 [2021-11-07 10:18:40,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:18:40,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:18:40,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:18:40,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:18:40,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:18:40,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:18:40,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 78 [2021-11-07 10:18:40,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:18:40,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:18:40,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:18:40,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:18:40,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:18:40,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:18:40,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:18:40,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:18:40,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:18:40,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 10:18:40,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 90 [2021-11-07 10:18:40,607 INFO L354 Elim1Store]: treesize reduction 230, result has 16.7 percent of original size [2021-11-07 10:18:40,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 135 treesize of output 97 [2021-11-07 10:18:43,790 INFO L354 Elim1Store]: treesize reduction 780, result has 0.9 percent of original size [2021-11-07 10:18:43,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 289 treesize of output 190 [2021-11-07 10:18:43,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:18:43,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... Killed by 15