./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 4d014703 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-4d01470 [2021-11-02 14:12:00,236 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 14:12:00,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 14:12:00,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 14:12:00,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 14:12:00,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 14:12:00,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 14:12:00,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 14:12:00,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 14:12:00,305 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 14:12:00,306 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 14:12:00,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 14:12:00,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 14:12:00,308 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 14:12:00,309 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 14:12:00,310 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 14:12:00,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 14:12:00,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 14:12:00,312 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 14:12:00,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 14:12:00,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 14:12:00,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 14:12:00,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 14:12:00,317 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 14:12:00,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 14:12:00,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 14:12:00,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 14:12:00,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 14:12:00,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 14:12:00,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 14:12:00,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 14:12:00,323 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 14:12:00,324 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 14:12:00,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 14:12:00,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 14:12:00,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 14:12:00,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 14:12:00,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 14:12:00,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 14:12:00,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 14:12:00,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 14:12:00,328 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 14:12:00,357 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 14:12:00,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 14:12:00,361 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 14:12:00,361 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 14:12:00,363 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 14:12:00,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 14:12:00,363 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 14:12:00,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 14:12:00,363 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 14:12:00,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 14:12:00,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 14:12:00,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 14:12:00,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 14:12:00,365 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 14:12:00,365 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 14:12:00,365 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 14:12:00,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 14:12:00,366 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 14:12:00,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 14:12:00,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 14:12:00,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 14:12:00,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 14:12:00,367 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 14:12:00,367 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 14:12:00,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 14:12:00,367 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 14:12:00,367 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 14:12:00,368 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 14:12:00,368 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 14:12:00,369 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ff439c9da308e48e314eaeb6f620d0560f5430b3c601570b5afd8d635a5b965 [2021-11-02 14:12:00,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 14:12:00,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 14:12:00,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 14:12:00,635 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 14:12:00,636 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 14:12:00,637 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i [2021-11-02 14:12:00,703 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcaa9c5d0/613669af34114a52aadf2d919cbfd787/FLAG9ec1dd60f [2021-11-02 14:12:01,250 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 14:12:01,250 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i [2021-11-02 14:12:01,272 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcaa9c5d0/613669af34114a52aadf2d919cbfd787/FLAG9ec1dd60f [2021-11-02 14:12:01,501 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fcaa9c5d0/613669af34114a52aadf2d919cbfd787 [2021-11-02 14:12:01,503 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 14:12:01,505 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 14:12:01,520 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 14:12:01,520 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 14:12:01,523 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 14:12:01,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 02:12:01" (1/1) ... [2021-11-02 14:12:01,526 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@392ad193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:12:01, skipping insertion in model container [2021-11-02 14:12:01,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 02:12:01" (1/1) ... [2021-11-02 14:12:01,532 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 14:12:01,599 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 14:12:01,817 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] [2021-11-02 14:12:01,822 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] [2021-11-02 14:12:01,838 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 14:12:01,844 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 14:12:02,273 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:02,274 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:02,275 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:02,275 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:02,276 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:02,294 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:02,297 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:02,299 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:02,304 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:02,306 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:02,308 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:02,308 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:02,308 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:02,393 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 14:12:02,394 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 14:12:02,395 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 14:12:02,395 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 14:12:02,396 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 14:12:02,396 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 14:12:02,397 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 14:12:02,397 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 14:12:02,398 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 14:12:02,398 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 14:12:02,438 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 14:12:02,450 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 14:12:02,459 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] [2021-11-02 14:12:02,460 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] [2021-11-02 14:12:02,462 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 14:12:02,463 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 14:12:02,487 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:02,488 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:02,488 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:02,489 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:02,489 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:02,494 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:02,494 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:02,495 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:02,496 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:02,496 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:02,497 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:02,497 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:02,497 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:02,509 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 14:12:02,509 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 14:12:02,510 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 14:12:02,511 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 14:12:02,511 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 14:12:02,512 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 14:12:02,512 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 14:12:02,512 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 14:12:02,513 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 14:12:02,513 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 14:12:02,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 14:12:02,678 INFO L208 MainTranslator]: Completed translation [2021-11-02 14:12:02,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:12:02 WrapperNode [2021-11-02 14:12:02,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 14:12:02,680 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 14:12:02,680 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 14:12:02,680 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 14:12:02,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:12:02" (1/1) ... [2021-11-02 14:12:02,736 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:12:02" (1/1) ... [2021-11-02 14:12:02,781 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 14:12:02,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 14:12:02,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 14:12:02,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 14:12:02,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:12:02" (1/1) ... [2021-11-02 14:12:02,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:12:02" (1/1) ... [2021-11-02 14:12:02,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:12:02" (1/1) ... [2021-11-02 14:12:02,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:12:02" (1/1) ... [2021-11-02 14:12:02,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:12:02" (1/1) ... [2021-11-02 14:12:02,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:12:02" (1/1) ... [2021-11-02 14:12:02,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:12:02" (1/1) ... [2021-11-02 14:12:02,870 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 14:12:02,871 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 14:12:02,871 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 14:12:02,871 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 14:12:02,872 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:12:02" (1/1) ... [2021-11-02 14:12:02,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 14:12:02,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:12:02,898 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) [2021-11-02 14:12:02,915 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 [2021-11-02 14:12:02,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 14:12:02,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 14:12:02,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 14:12:02,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 14:12:02,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 14:12:02,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 14:12:02,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 14:12:03,268 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 14:12:03,269 INFO L299 CfgBuilder]: Removed 36 assume(true) statements. [2021-11-02 14:12:03,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 02:12:03 BoogieIcfgContainer [2021-11-02 14:12:03,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 14:12:03,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 14:12:03,271 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 14:12:03,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 14:12:03,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 02:12:01" (1/3) ... [2021-11-02 14:12:03,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@111a8b7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 02:12:03, skipping insertion in model container [2021-11-02 14:12:03,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:12:02" (2/3) ... [2021-11-02 14:12:03,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@111a8b7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 02:12:03, skipping insertion in model container [2021-11-02 14:12:03,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 02:12:03" (3/3) ... [2021-11-02 14:12:03,279 INFO L111 eAbstractionObserver]: Analyzing ICFG memset_using_uint64_harness.i [2021-11-02 14:12:03,287 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 14:12:03,287 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-02 14:12:03,337 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 14:12:03,346 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 [2021-11-02 14:12:03,347 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-02 14:12:03,370 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) [2021-11-02 14:12:03,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-02 14:12:03,378 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:12:03,378 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] [2021-11-02 14:12:03,379 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 14:12:03,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:12:03,383 INFO L85 PathProgramCache]: Analyzing trace with hash 546734931, now seen corresponding path program 1 times [2021-11-02 14:12:03,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:12:03,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822691737] [2021-11-02 14:12:03,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:12:03,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:12:03,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:12:03,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:12:03,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:12:03,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822691737] [2021-11-02 14:12:03,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822691737] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:12:03,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:12:03,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 14:12:03,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578979427] [2021-11-02 14:12:03,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 14:12:03,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:12:03,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 14:12:03,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 14:12:03,663 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) [2021-11-02 14:12:03,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:12:03,811 INFO L93 Difference]: Finished difference Result 111 states and 154 transitions. [2021-11-02 14:12:03,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 14:12:03,814 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 [2021-11-02 14:12:03,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:12:03,819 INFO L225 Difference]: With dead ends: 111 [2021-11-02 14:12:03,819 INFO L226 Difference]: Without dead ends: 51 [2021-11-02 14:12:03,821 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 [2021-11-02 14:12:03,824 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 110.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.63ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 130.13ms IncrementalHoareTripleChecker+Time [2021-11-02 14:12:03,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 69 Unknown, 0 Unchecked, 0.63ms Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 130.13ms Time] [2021-11-02 14:12:03,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-02 14:12:03,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-11-02 14:12:03,846 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) [2021-11-02 14:12:03,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2021-11-02 14:12:03,850 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 31 [2021-11-02 14:12:03,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:12:03,851 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2021-11-02 14:12:03,852 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) [2021-11-02 14:12:03,852 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2021-11-02 14:12:03,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-02 14:12:03,854 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:12:03,857 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] [2021-11-02 14:12:03,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 14:12:03,858 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 14:12:03,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:12:03,859 INFO L85 PathProgramCache]: Analyzing trace with hash 2045186899, now seen corresponding path program 1 times [2021-11-02 14:12:03,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:12:03,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907717257] [2021-11-02 14:12:03,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:12:03,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:12:03,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:12:04,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:12:04,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:12:04,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907717257] [2021-11-02 14:12:04,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907717257] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:12:04,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:12:04,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 14:12:04,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246309142] [2021-11-02 14:12:04,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 14:12:04,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:12:04,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 14:12:04,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 14:12:04,007 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) [2021-11-02 14:12:04,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:12:04,247 INFO L93 Difference]: Finished difference Result 98 states and 111 transitions. [2021-11-02 14:12:04,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 14:12:04,248 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 [2021-11-02 14:12:04,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:12:04,249 INFO L225 Difference]: With dead ends: 98 [2021-11-02 14:12:04,249 INFO L226 Difference]: Without dead ends: 77 [2021-11-02 14:12:04,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.13ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 14:12:04,256 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 26 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 182.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.30ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 217.87ms IncrementalHoareTripleChecker+Time [2021-11-02 14:12:04,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 0 Invalid, 231 Unknown, 0 Unchecked, 3.30ms Time], IncrementalHoareTripleChecker [1 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 217.87ms Time] [2021-11-02 14:12:04,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-11-02 14:12:04,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 53. [2021-11-02 14:12:04,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 50 states have (on average 1.28) internal successors, (64), 52 states have internal predecessors, (64), 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) [2021-11-02 14:12:04,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2021-11-02 14:12:04,274 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 31 [2021-11-02 14:12:04,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:12:04,275 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2021-11-02 14:12:04,275 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) [2021-11-02 14:12:04,275 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2021-11-02 14:12:04,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-02 14:12:04,278 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:12:04,278 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] [2021-11-02 14:12:04,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 14:12:04,279 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 14:12:04,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:12:04,279 INFO L85 PathProgramCache]: Analyzing trace with hash -474773035, now seen corresponding path program 1 times [2021-11-02 14:12:04,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:12:04,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867917392] [2021-11-02 14:12:04,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:12:04,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:12:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:12:04,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:12:04,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:12:04,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867917392] [2021-11-02 14:12:04,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867917392] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:12:04,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:12:04,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 14:12:04,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172507587] [2021-11-02 14:12:04,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 14:12:04,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:12:04,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 14:12:04,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 14:12:04,480 INFO L87 Difference]: Start difference. First operand 53 states and 64 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) [2021-11-02 14:12:04,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:12:04,678 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2021-11-02 14:12:04,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 14:12:04,679 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 [2021-11-02 14:12:04,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:12:04,679 INFO L225 Difference]: With dead ends: 58 [2021-11-02 14:12:04,679 INFO L226 Difference]: Without dead ends: 56 [2021-11-02 14:12:04,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.50ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 14:12:04,680 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 46 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 151.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.43ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 178.37ms IncrementalHoareTripleChecker+Time [2021-11-02 14:12:04,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 0 Invalid, 115 Unknown, 0 Unchecked, 2.43ms Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 178.37ms Time] [2021-11-02 14:12:04,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-02 14:12:04,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2021-11-02 14:12:04,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 49 states have (on average 1.2653061224489797) 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) [2021-11-02 14:12:04,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2021-11-02 14:12:04,684 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 31 [2021-11-02 14:12:04,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:12:04,685 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2021-11-02 14:12:04,685 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) [2021-11-02 14:12:04,685 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2021-11-02 14:12:04,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-02 14:12:04,685 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:12:04,686 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] [2021-11-02 14:12:04,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 14:12:04,687 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 14:12:04,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:12:04,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1904869812, now seen corresponding path program 1 times [2021-11-02 14:12:04,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:12:04,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238454273] [2021-11-02 14:12:04,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:12:04,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:12:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:12:04,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:12:04,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:12:04,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238454273] [2021-11-02 14:12:04,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238454273] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:12:04,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:12:04,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 14:12:04,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122443939] [2021-11-02 14:12:04,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 14:12:04,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:12:04,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 14:12:04,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 14:12:04,824 INFO L87 Difference]: Start difference. First operand 51 states and 62 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) [2021-11-02 14:12:05,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:12:05,191 INFO L93 Difference]: Finished difference Result 102 states and 121 transitions. [2021-11-02 14:12:05,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 14:12:05,192 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 [2021-11-02 14:12:05,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:12:05,192 INFO L225 Difference]: With dead ends: 102 [2021-11-02 14:12:05,192 INFO L226 Difference]: Without dead ends: 87 [2021-11-02 14:12:05,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.35ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 14:12:05,194 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 125 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 285.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.89ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 333.46ms IncrementalHoareTripleChecker+Time [2021-11-02 14:12:05,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 0 Invalid, 182 Unknown, 0 Unchecked, 2.89ms Time], IncrementalHoareTripleChecker [0 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 333.46ms Time] [2021-11-02 14:12:05,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-11-02 14:12:05,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 79. [2021-11-02 14:12:05,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 77 states have (on average 1.2857142857142858) internal successors, (99), 78 states have internal predecessors, (99), 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) [2021-11-02 14:12:05,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 99 transitions. [2021-11-02 14:12:05,201 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 99 transitions. Word has length 36 [2021-11-02 14:12:05,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:12:05,201 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 99 transitions. [2021-11-02 14:12:05,201 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) [2021-11-02 14:12:05,201 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 99 transitions. [2021-11-02 14:12:05,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-02 14:12:05,211 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:12:05,212 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] [2021-11-02 14:12:05,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 14:12:05,212 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 14:12:05,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:12:05,214 INFO L85 PathProgramCache]: Analyzing trace with hash 451092579, now seen corresponding path program 1 times [2021-11-02 14:12:05,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:12:05,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781437513] [2021-11-02 14:12:05,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:12:05,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:12:05,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:12:05,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:12:05,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:12:05,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781437513] [2021-11-02 14:12:05,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781437513] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:12:05,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:12:05,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 14:12:05,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406324214] [2021-11-02 14:12:05,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 14:12:05,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:12:05,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 14:12:05,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-02 14:12:05,441 INFO L87 Difference]: Start difference. First operand 79 states and 99 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 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) [2021-11-02 14:12:05,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:12:05,783 INFO L93 Difference]: Finished difference Result 124 states and 154 transitions. [2021-11-02 14:12:05,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 14:12:05,783 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 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 [2021-11-02 14:12:05,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:12:05,784 INFO L225 Difference]: With dead ends: 124 [2021-11-02 14:12:05,784 INFO L226 Difference]: Without dead ends: 81 [2021-11-02 14:12:05,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 21.70ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-02 14:12:05,785 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 57 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 294.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.55ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 329.27ms IncrementalHoareTripleChecker+Time [2021-11-02 14:12:05,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 0 Invalid, 240 Unknown, 0 Unchecked, 1.55ms Time], IncrementalHoareTripleChecker [1 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 329.27ms Time] [2021-11-02 14:12:05,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-02 14:12:05,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2021-11-02 14:12:05,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 78 states have (on average 1.2820512820512822) internal successors, (100), 79 states have internal predecessors, (100), 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) [2021-11-02 14:12:05,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 100 transitions. [2021-11-02 14:12:05,790 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 100 transitions. Word has length 37 [2021-11-02 14:12:05,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:12:05,791 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 100 transitions. [2021-11-02 14:12:05,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 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) [2021-11-02 14:12:05,791 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 100 transitions. [2021-11-02 14:12:05,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-02 14:12:05,792 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:12:05,792 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] [2021-11-02 14:12:05,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 14:12:05,792 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 14:12:05,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:12:05,793 INFO L85 PathProgramCache]: Analyzing trace with hash 675420878, now seen corresponding path program 1 times [2021-11-02 14:12:05,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:12:05,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081270494] [2021-11-02 14:12:05,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:12:05,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:12:05,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:12:05,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:12:05,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:12:05,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081270494] [2021-11-02 14:12:05,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081270494] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:12:05,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:12:05,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 14:12:05,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518448147] [2021-11-02 14:12:05,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 14:12:05,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:12:05,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 14:12:05,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 14:12:05,858 INFO L87 Difference]: Start difference. First operand 80 states and 100 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) [2021-11-02 14:12:06,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:12:06,165 INFO L93 Difference]: Finished difference Result 88 states and 107 transitions. [2021-11-02 14:12:06,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 14:12:06,166 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 [2021-11-02 14:12:06,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:12:06,167 INFO L225 Difference]: With dead ends: 88 [2021-11-02 14:12:06,167 INFO L226 Difference]: Without dead ends: 52 [2021-11-02 14:12:06,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.89ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 14:12:06,168 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 102 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 239.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.87ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 284.51ms IncrementalHoareTripleChecker+Time [2021-11-02 14:12:06,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 0 Invalid, 182 Unknown, 0 Unchecked, 1.87ms Time], IncrementalHoareTripleChecker [0 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 284.51ms Time] [2021-11-02 14:12:06,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-02 14:12:06,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-11-02 14:12:06,171 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) [2021-11-02 14:12:06,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2021-11-02 14:12:06,172 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 38 [2021-11-02 14:12:06,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:12:06,172 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2021-11-02 14:12:06,173 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) [2021-11-02 14:12:06,173 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2021-11-02 14:12:06,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-02 14:12:06,173 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:12:06,173 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] [2021-11-02 14:12:06,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 14:12:06,174 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 14:12:06,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:12:06,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1196461279, now seen corresponding path program 1 times [2021-11-02 14:12:06,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:12:06,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269985216] [2021-11-02 14:12:06,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:12:06,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:12:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 14:12:06,254 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 14:12:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 14:12:06,351 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 14:12:06,351 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-02 14:12:06,352 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-11-02 14:12:06,354 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2021-11-02 14:12:06,354 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2021-11-02 14:12:06,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 14:12:06,357 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:12:06,359 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-02 14:12:06,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 02:12:06 BoogieIcfgContainer [2021-11-02 14:12:06,392 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-02 14:12:06,392 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-02 14:12:06,392 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-02 14:12:06,393 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-02 14:12:06,393 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 02:12:03" (3/4) ... [2021-11-02 14:12:06,395 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-02 14:12:06,395 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-02 14:12:06,396 INFO L158 Benchmark]: Toolchain (without parser) took 4891.40ms. Allocated memory was 107.0MB in the beginning and 216.0MB in the end (delta: 109.1MB). Free memory was 72.0MB in the beginning and 79.5MB in the end (delta: -7.5MB). Peak memory consumption was 101.3MB. Max. memory is 16.1GB. [2021-11-02 14:12:06,396 INFO L158 Benchmark]: CDTParser took 0.99ms. Allocated memory is still 107.0MB. Free memory is still 62.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-02 14:12:06,396 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1159.83ms. Allocated memory was 107.0MB in the beginning and 140.5MB in the end (delta: 33.6MB). Free memory was 71.8MB in the beginning and 68.2MB in the end (delta: 3.6MB). Peak memory consumption was 44.9MB. Max. memory is 16.1GB. [2021-11-02 14:12:06,397 INFO L158 Benchmark]: Boogie Procedure Inliner took 102.10ms. Allocated memory is still 140.5MB. Free memory was 68.2MB in the beginning and 63.3MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-02 14:12:06,397 INFO L158 Benchmark]: Boogie Preprocessor took 87.54ms. Allocated memory is still 140.5MB. Free memory was 63.3MB in the beginning and 102.5MB in the end (delta: -39.3MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. [2021-11-02 14:12:06,397 INFO L158 Benchmark]: RCFGBuilder took 399.35ms. Allocated memory is still 140.5MB. Free memory was 102.0MB in the beginning and 80.2MB in the end (delta: 21.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-11-02 14:12:06,398 INFO L158 Benchmark]: TraceAbstraction took 3120.20ms. Allocated memory was 140.5MB in the beginning and 216.0MB in the end (delta: 75.5MB). Free memory was 80.2MB in the beginning and 80.5MB in the end (delta: -279.6kB). Peak memory consumption was 74.9MB. Max. memory is 16.1GB. [2021-11-02 14:12:06,398 INFO L158 Benchmark]: Witness Printer took 3.32ms. Allocated memory is still 216.0MB. Free memory is still 79.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-02 14:12:06,400 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.99ms. Allocated memory is still 107.0MB. Free memory is still 62.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1159.83ms. Allocated memory was 107.0MB in the beginning and 140.5MB in the end (delta: 33.6MB). Free memory was 71.8MB in the beginning and 68.2MB in the end (delta: 3.6MB). Peak memory consumption was 44.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 102.10ms. Allocated memory is still 140.5MB. Free memory was 68.2MB in the beginning and 63.3MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 87.54ms. Allocated memory is still 140.5MB. Free memory was 63.3MB in the beginning and 102.5MB in the end (delta: -39.3MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. * RCFGBuilder took 399.35ms. Allocated memory is still 140.5MB. Free memory was 102.0MB in the beginning and 80.2MB in the end (delta: 21.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 3120.20ms. Allocated memory was 140.5MB in the beginning and 216.0MB in the end (delta: 75.5MB). Free memory was 80.2MB in the beginning and 80.5MB in the end (delta: -279.6kB). Peak memory consumption was 74.9MB. Max. memory is 16.1GB. * Witness Printer took 3.32ms. Allocated memory is still 216.0MB. Free memory is still 79.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms 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: [L5937] short d1[160]; [L5938] short d2[160]; [L5939] int c = __VERIFIER_nondet_int(); [L5940] unsigned size = __VERIFIER_nondet_uint(); [L211] COND FALSE !(!cond) [L211] COND FALSE !(!cond) [L5871] COND TRUE n > 0 [L5872] char *sp = (char *)s; [L5873] unsigned long i = 0; [L5873] COND TRUE i < n [L5874] sp[i] = c [L5873] i++ [L5873] COND FALSE !(i < n) [L5876] return s; [L211] COND FALSE !(!cond) [L5883] size_t num_uint64s = n >> 3; [L5884] size_t rem = n & 0x7; [L5886] uint8_t *d = (uint8_t *)dst; [L5890] case 7: [L5892] case 6: [L5893] d[5] = c [L5894] case 5: [L5895] d[4] = c [L5896] case 4: [L5897] d[3] = c [L5898] case 3: [L5899] d[2] = c [L5900] case 2: [L5901] d[1] = c [L5902] case 1: [L5903] d[0] = c [L5906] d += rem [L5908] uint64_t compounded = 0; [L5909] COND FALSE !(num_uint64s > 0 && c != 0) [L5921] size_t i = 0; [L5921] COND FALSE !(i < num_uint64s) [L5925] return dst; [L5908] uint64_t compounded = 0; [L5925] return dst; [L223] COND FALSE !(!cond) [L5655-L5658] COND TRUE len > 0 && a != ((void *)0) && b != ((void *)0) [L266] return __VERIFIER_nondet_ulong(); [L5660] size_t i = nondet_uint64_t(); [L211] COND FALSE !(!cond) [L5664] a[i] [L5664] b[i] [L223] COND TRUE !cond [L223] reach_error() - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 57 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 3022.32ms, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 36.61ms, AutomataDifference: 1668.06ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 10.03ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 356 SdHoareTripleChecker+Valid, 1473.61ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 356 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1264.53ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 533 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1017 IncrementalHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 0 mSDtfsCounter, 1017 mSolverCounterSat, 12.66ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 85.61ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=5, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 47.46ms AutomataMinimizationTime, 6 MinimizatonAttempts, 38 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 39.83ms SsaConstructionTime, 355.23ms SatisfiabilityAnalysisTime, 563.21ms InterpolantComputationTime, 243 NumberOfCodeBlocks, 243 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 198 ConstructedInterpolants, 0 QuantifiedInterpolants, 835 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 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 [2021-11-02 14:12:06,457 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 0 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 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 14:12:08,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 14:12:08,244 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 14:12:08,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 14:12:08,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 14:12:08,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 14:12:08,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 14:12:08,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 14:12:08,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 14:12:08,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 14:12:08,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 14:12:08,305 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 14:12:08,306 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 14:12:08,308 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 14:12:08,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 14:12:08,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 14:12:08,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 14:12:08,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 14:12:08,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 14:12:08,322 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 14:12:08,324 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 14:12:08,325 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 14:12:08,326 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 14:12:08,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 14:12:08,333 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 14:12:08,334 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 14:12:08,334 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 14:12:08,336 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 14:12:08,336 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 14:12:08,337 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 14:12:08,337 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 14:12:08,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 14:12:08,339 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 14:12:08,340 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 14:12:08,341 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 14:12:08,341 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 14:12:08,342 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 14:12:08,342 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 14:12:08,343 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 14:12:08,344 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 14:12:08,345 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 14:12:08,353 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-02 14:12:08,384 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 14:12:08,385 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 14:12:08,386 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 14:12:08,386 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 14:12:08,387 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 14:12:08,388 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 14:12:08,388 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 14:12:08,388 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 14:12:08,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 14:12:08,389 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 14:12:08,389 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 14:12:08,389 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 14:12:08,390 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-02 14:12:08,390 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-02 14:12:08,390 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 14:12:08,390 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 14:12:08,390 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 14:12:08,391 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 14:12:08,391 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 14:12:08,391 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 14:12:08,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 14:12:08,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 14:12:08,392 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 14:12:08,392 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 14:12:08,392 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-02 14:12:08,392 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-02 14:12:08,392 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 14:12:08,392 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 14:12:08,393 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 14:12:08,393 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 14:12:08,393 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-02 14:12:08,393 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ff439c9da308e48e314eaeb6f620d0560f5430b3c601570b5afd8d635a5b965 [2021-11-02 14:12:08,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 14:12:08,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 14:12:08,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 14:12:08,701 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 14:12:08,703 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 14:12:08,705 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i [2021-11-02 14:12:08,761 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3bb8d06a/eb62232eef68450faa72076d5478e4f9/FLAG268363420 [2021-11-02 14:12:09,317 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 14:12:09,318 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_using_uint64_harness.i [2021-11-02 14:12:09,342 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3bb8d06a/eb62232eef68450faa72076d5478e4f9/FLAG268363420 [2021-11-02 14:12:09,731 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3bb8d06a/eb62232eef68450faa72076d5478e4f9 [2021-11-02 14:12:09,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 14:12:09,735 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 14:12:09,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 14:12:09,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 14:12:09,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 14:12:09,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 02:12:09" (1/1) ... [2021-11-02 14:12:09,743 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6176a686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:12:09, skipping insertion in model container [2021-11-02 14:12:09,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 02:12:09" (1/1) ... [2021-11-02 14:12:09,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 14:12:09,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 14:12:10,120 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] [2021-11-02 14:12:10,135 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] [2021-11-02 14:12:10,161 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 14:12:10,176 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 14:12:10,613 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:10,614 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:10,614 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:10,615 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:10,615 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:10,624 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:10,624 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:10,626 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:10,626 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:10,629 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:10,631 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:10,633 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:10,633 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:10,737 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 14:12:10,738 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 14:12:10,739 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 14:12:10,740 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 14:12:10,740 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 14:12:10,741 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 14:12:10,741 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 14:12:10,741 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 14:12:10,742 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 14:12:10,742 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 14:12:10,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 14:12:10,800 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 14:12:10,823 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] [2021-11-02 14:12:10,823 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] [2021-11-02 14:12:10,825 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 14:12:10,825 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 14:12:10,866 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:10,867 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:10,867 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:10,868 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:10,868 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:10,886 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:10,887 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:10,888 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:10,888 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:10,889 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:10,894 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:10,895 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:10,896 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 14:12:10,923 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 14:12:10,924 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 14:12:10,926 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 14:12:10,927 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 14:12:10,929 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 14:12:10,929 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 14:12:10,930 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 14:12:10,930 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 14:12:10,931 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 14:12:10,931 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 14:12:10,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 14:12:11,131 INFO L208 MainTranslator]: Completed translation [2021-11-02 14:12:11,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:12:11 WrapperNode [2021-11-02 14:12:11,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 14:12:11,132 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 14:12:11,133 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 14:12:11,133 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 14:12:11,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:12:11" (1/1) ... [2021-11-02 14:12:11,222 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:12:11" (1/1) ... [2021-11-02 14:12:11,254 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 14:12:11,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 14:12:11,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 14:12:11,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 14:12:11,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:12:11" (1/1) ... [2021-11-02 14:12:11,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:12:11" (1/1) ... [2021-11-02 14:12:11,266 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:12:11" (1/1) ... [2021-11-02 14:12:11,266 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:12:11" (1/1) ... [2021-11-02 14:12:11,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:12:11" (1/1) ... [2021-11-02 14:12:11,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:12:11" (1/1) ... [2021-11-02 14:12:11,290 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:12:11" (1/1) ... [2021-11-02 14:12:11,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 14:12:11,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 14:12:11,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 14:12:11,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 14:12:11,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:12:11" (1/1) ... [2021-11-02 14:12:11,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 14:12:11,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:12:11,323 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) [2021-11-02 14:12:11,326 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 [2021-11-02 14:12:11,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 14:12:11,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-02 14:12:11,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-02 14:12:11,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 14:12:11,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 14:12:11,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-02 14:12:11,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-02 14:12:11,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 14:12:11,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-02 14:12:11,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-02 14:12:11,764 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 14:12:11,764 INFO L299 CfgBuilder]: Removed 36 assume(true) statements. [2021-11-02 14:12:11,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 02:12:11 BoogieIcfgContainer [2021-11-02 14:12:11,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 14:12:11,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 14:12:11,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 14:12:11,775 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 14:12:11,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 02:12:09" (1/3) ... [2021-11-02 14:12:11,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@785d630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 02:12:11, skipping insertion in model container [2021-11-02 14:12:11,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:12:11" (2/3) ... [2021-11-02 14:12:11,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@785d630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 02:12:11, skipping insertion in model container [2021-11-02 14:12:11,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 02:12:11" (3/3) ... [2021-11-02 14:12:11,779 INFO L111 eAbstractionObserver]: Analyzing ICFG memset_using_uint64_harness.i [2021-11-02 14:12:11,784 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 14:12:11,784 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-02 14:12:11,838 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 14:12:11,856 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 [2021-11-02 14:12:11,856 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-02 14:12:11,870 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) [2021-11-02 14:12:11,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-02 14:12:11,876 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:12:11,877 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] [2021-11-02 14:12:11,877 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 14:12:11,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:12:11,882 INFO L85 PathProgramCache]: Analyzing trace with hash 546734931, now seen corresponding path program 1 times [2021-11-02 14:12:11,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 14:12:11,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1215318366] [2021-11-02 14:12:11,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:12:11,896 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 14:12:11,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 14:12:11,899 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 14:12:11,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-02 14:12:12,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:12:12,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-02 14:12:12,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:12:12,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:12:12,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 14:12:12,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:12:12,296 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 14:12:12,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1215318366] [2021-11-02 14:12:12,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1215318366] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 14:12:12,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:12:12,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-02 14:12:12,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488000959] [2021-11-02 14:12:12,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 14:12:12,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 14:12:12,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 14:12:12,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 14:12:12,332 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) [2021-11-02 14:12:14,438 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:12:14,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:12:14,580 INFO L93 Difference]: Finished difference Result 111 states and 154 transitions. [2021-11-02 14:12:14,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 14:12:14,583 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 [2021-11-02 14:12:14,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:12:14,588 INFO L225 Difference]: With dead ends: 111 [2021-11-02 14:12:14,589 INFO L226 Difference]: Without dead ends: 51 [2021-11-02 14:12:14,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.41ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 14:12:14,594 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2164.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.14ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2221.76ms IncrementalHoareTripleChecker+Time [2021-11-02 14:12:14,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 69 Unknown, 0 Unchecked, 1.14ms Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 1 Unknown, 0 Unchecked, 2221.76ms Time] [2021-11-02 14:12:14,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-02 14:12:14,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-11-02 14:12:14,618 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) [2021-11-02 14:12:14,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2021-11-02 14:12:14,621 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 31 [2021-11-02 14:12:14,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:12:14,621 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2021-11-02 14:12:14,621 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) [2021-11-02 14:12:14,622 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2021-11-02 14:12:14,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-02 14:12:14,622 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:12:14,622 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] [2021-11-02 14:12:14,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-02 14:12:14,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 14:12:14,824 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 14:12:14,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:12:14,825 INFO L85 PathProgramCache]: Analyzing trace with hash 2045186899, now seen corresponding path program 1 times [2021-11-02 14:12:14,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 14:12:14,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427707168] [2021-11-02 14:12:14,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:12:14,826 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 14:12:14,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 14:12:14,829 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 14:12:14,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-02 14:12:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:12:15,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 14:12:15,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:12:15,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:12:15,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 14:12:15,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:12:15,862 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 14:12:15,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427707168] [2021-11-02 14:12:15,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1427707168] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 14:12:15,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:12:15,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-11-02 14:12:15,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4773500] [2021-11-02 14:12:15,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 14:12:15,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 14:12:15,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 14:12:15,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-02 14:12:15,865 INFO L87 Difference]: Start difference. First operand 51 states and 62 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 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) [2021-11-02 14:12:18,528 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:12:18,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:12:18,993 INFO L93 Difference]: Finished difference Result 100 states and 120 transitions. [2021-11-02 14:12:18,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 14:12:18,994 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 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 [2021-11-02 14:12:18,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:12:18,995 INFO L225 Difference]: With dead ends: 100 [2021-11-02 14:12:18,995 INFO L226 Difference]: Without dead ends: 64 [2021-11-02 14:12:18,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 407.29ms TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-11-02 14:12:18,996 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2858.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.18ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 3015.46ms IncrementalHoareTripleChecker+Time [2021-11-02 14:12:18,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 367 Unknown, 0 Unchecked, 8.18ms Time], IncrementalHoareTripleChecker [6 Valid, 355 Invalid, 1 Unknown, 5 Unchecked, 3015.46ms Time] [2021-11-02 14:12:18,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-02 14:12:19,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2021-11-02 14:12:19,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 57 states have internal predecessors, (70), 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) [2021-11-02 14:12:19,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2021-11-02 14:12:19,002 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 31 [2021-11-02 14:12:19,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:12:19,003 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2021-11-02 14:12:19,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 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) [2021-11-02 14:12:19,003 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2021-11-02 14:12:19,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-02 14:12:19,004 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:12:19,004 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] [2021-11-02 14:12:19,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-02 14:12:19,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 14:12:19,216 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 14:12:19,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:12:19,217 INFO L85 PathProgramCache]: Analyzing trace with hash 356243157, now seen corresponding path program 1 times [2021-11-02 14:12:19,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 14:12:19,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2126506136] [2021-11-02 14:12:19,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:12:19,218 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 14:12:19,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 14:12:19,219 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 14:12:19,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-02 14:12:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:12:19,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-02 14:12:19,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:12:19,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:12:19,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 14:12:20,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:12:20,470 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 14:12:20,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2126506136] [2021-11-02 14:12:20,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2126506136] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 14:12:20,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:12:20,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 8] imperfect sequences [] total 12 [2021-11-02 14:12:20,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608086639] [2021-11-02 14:12:20,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 14:12:20,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 14:12:20,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 14:12:20,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-02 14:12:20,472 INFO L87 Difference]: Start difference. First operand 58 states and 70 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 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) [2021-11-02 14:12:23,088 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:12:23,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:12:23,499 INFO L93 Difference]: Finished difference Result 99 states and 118 transitions. [2021-11-02 14:12:23,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 14:12:23,499 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 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 [2021-11-02 14:12:23,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:12:23,500 INFO L225 Difference]: With dead ends: 99 [2021-11-02 14:12:23,500 INFO L226 Difference]: Without dead ends: 65 [2021-11-02 14:12:23,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 542.35ms TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-11-02 14:12:23,502 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2779.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.27ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 123 IncrementalHoareTripleChecker+Unchecked, 2913.22ms IncrementalHoareTripleChecker+Time [2021-11-02 14:12:23,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 467 Unknown, 0 Unchecked, 5.27ms Time], IncrementalHoareTripleChecker [5 Valid, 338 Invalid, 1 Unknown, 123 Unchecked, 2913.22ms Time] [2021-11-02 14:12:23,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-02 14:12:23,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2021-11-02 14:12:23,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 57 states have (on average 1.263157894736842) internal successors, (72), 59 states have internal predecessors, (72), 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) [2021-11-02 14:12:23,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2021-11-02 14:12:23,506 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 31 [2021-11-02 14:12:23,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:12:23,506 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2021-11-02 14:12:23,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 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) [2021-11-02 14:12:23,507 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2021-11-02 14:12:23,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-02 14:12:23,508 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:12:23,508 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] [2021-11-02 14:12:23,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-02 14:12:23,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 14:12:23,716 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 14:12:23,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:12:23,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1232104745, now seen corresponding path program 1 times [2021-11-02 14:12:23,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 14:12:23,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1123151272] [2021-11-02 14:12:23,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:12:23,718 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 14:12:23,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 14:12:23,720 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 14:12:23,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-02 14:12:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:12:23,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-02 14:12:23,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:12:24,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:12:24,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 14:12:25,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:12:25,279 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 14:12:25,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1123151272] [2021-11-02 14:12:25,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1123151272] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 14:12:25,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:12:25,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 9] imperfect sequences [] total 13 [2021-11-02 14:12:25,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082644605] [2021-11-02 14:12:25,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 14:12:25,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 14:12:25,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 14:12:25,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-02 14:12:25,281 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 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) [2021-11-02 14:12:28,117 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:12:28,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:12:28,692 INFO L93 Difference]: Finished difference Result 98 states and 116 transitions. [2021-11-02 14:12:28,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 14:12:28,693 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 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 [2021-11-02 14:12:28,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:12:28,694 INFO L225 Difference]: With dead ends: 98 [2021-11-02 14:12:28,694 INFO L226 Difference]: Without dead ends: 66 [2021-11-02 14:12:28,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 706.57ms TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-11-02 14:12:28,697 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3129.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.20ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 3298.11ms IncrementalHoareTripleChecker+Time [2021-11-02 14:12:28,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 438 Unknown, 0 Unchecked, 6.20ms Time], IncrementalHoareTripleChecker [4 Valid, 424 Invalid, 1 Unknown, 9 Unchecked, 3298.11ms Time] [2021-11-02 14:12:28,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-11-02 14:12:28,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2021-11-02 14:12:28,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 59 states have (on average 1.2542372881355932) internal successors, (74), 61 states have internal predecessors, (74), 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) [2021-11-02 14:12:28,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 74 transitions. [2021-11-02 14:12:28,703 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 74 transitions. Word has length 31 [2021-11-02 14:12:28,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:12:28,703 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 74 transitions. [2021-11-02 14:12:28,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 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) [2021-11-02 14:12:28,703 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 74 transitions. [2021-11-02 14:12:28,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-02 14:12:28,704 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:12:28,704 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] [2021-11-02 14:12:28,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-02 14:12:28,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 14:12:28,907 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 14:12:28,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:12:28,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1782998873, now seen corresponding path program 1 times [2021-11-02 14:12:28,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 14:12:28,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1907139306] [2021-11-02 14:12:28,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:12:28,909 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 14:12:28,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 14:12:28,910 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 14:12:28,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-02 14:12:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:12:29,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-02 14:12:29,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:12:29,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:12:29,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 14:12:30,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:12:30,668 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 14:12:30,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1907139306] [2021-11-02 14:12:30,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1907139306] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 14:12:30,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:12:30,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 10] imperfect sequences [] total 14 [2021-11-02 14:12:30,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528594028] [2021-11-02 14:12:30,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-02 14:12:30,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 14:12:30,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-02 14:12:30,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-11-02 14:12:30,669 INFO L87 Difference]: Start difference. First operand 62 states and 74 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 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) [2021-11-02 14:12:33,177 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:12:33,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:12:33,550 INFO L93 Difference]: Finished difference Result 97 states and 114 transitions. [2021-11-02 14:12:33,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 14:12:33,551 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 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 [2021-11-02 14:12:33,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:12:33,551 INFO L225 Difference]: With dead ends: 97 [2021-11-02 14:12:33,551 INFO L226 Difference]: Without dead ends: 67 [2021-11-02 14:12:33,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 796.97ms TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-11-02 14:12:33,552 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2675.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.37ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 117 IncrementalHoareTripleChecker+Unchecked, 2789.76ms IncrementalHoareTripleChecker+Time [2021-11-02 14:12:33,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 382 Unknown, 0 Unchecked, 4.37ms Time], IncrementalHoareTripleChecker [3 Valid, 261 Invalid, 1 Unknown, 117 Unchecked, 2789.76ms Time] [2021-11-02 14:12:33,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-11-02 14:12:33,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 64. [2021-11-02 14:12:33,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 61 states have (on average 1.2459016393442623) internal successors, (76), 63 states have internal predecessors, (76), 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) [2021-11-02 14:12:33,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 76 transitions. [2021-11-02 14:12:33,558 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 76 transitions. Word has length 31 [2021-11-02 14:12:33,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:12:33,558 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 76 transitions. [2021-11-02 14:12:33,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 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) [2021-11-02 14:12:33,559 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 76 transitions. [2021-11-02 14:12:33,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-02 14:12:33,559 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:12:33,559 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] [2021-11-02 14:12:33,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-02 14:12:33,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 14:12:33,770 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 14:12:33,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:12:33,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1196192859, now seen corresponding path program 1 times [2021-11-02 14:12:33,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 14:12:33,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [154684928] [2021-11-02 14:12:33,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:12:33,772 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 14:12:33,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 14:12:33,773 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 14:12:33,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-02 14:12:33,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:12:33,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-02 14:12:33,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:12:34,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:12:34,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 14:12:35,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:12:35,902 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 14:12:35,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [154684928] [2021-11-02 14:12:35,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [154684928] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 14:12:35,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:12:35,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 11] imperfect sequences [] total 15 [2021-11-02 14:12:35,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499262360] [2021-11-02 14:12:35,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-02 14:12:35,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 14:12:35,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-02 14:12:35,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-11-02 14:12:35,906 INFO L87 Difference]: Start difference. First operand 64 states and 76 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 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) [2021-11-02 14:12:38,734 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:12:39,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:12:39,461 INFO L93 Difference]: Finished difference Result 96 states and 112 transitions. [2021-11-02 14:12:39,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 14:12:39,461 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 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 [2021-11-02 14:12:39,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:12:39,462 INFO L225 Difference]: With dead ends: 96 [2021-11-02 14:12:39,462 INFO L226 Difference]: Without dead ends: 68 [2021-11-02 14:12:39,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 948.46ms TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-11-02 14:12:39,463 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3270.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.20ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 3448.13ms IncrementalHoareTripleChecker+Time [2021-11-02 14:12:39,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 485 Unknown, 0 Unchecked, 6.20ms Time], IncrementalHoareTripleChecker [2 Valid, 420 Invalid, 1 Unknown, 62 Unchecked, 3448.13ms Time] [2021-11-02 14:12:39,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-02 14:12:39,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2021-11-02 14:12:39,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 63 states have (on average 1.2380952380952381) internal successors, (78), 65 states have internal predecessors, (78), 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) [2021-11-02 14:12:39,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2021-11-02 14:12:39,470 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 31 [2021-11-02 14:12:39,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:12:39,470 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2021-11-02 14:12:39,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 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) [2021-11-02 14:12:39,471 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2021-11-02 14:12:39,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-02 14:12:39,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:12:39,471 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] [2021-11-02 14:12:39,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-02 14:12:39,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 14:12:39,674 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 14:12:39,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:12:39,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1897257437, now seen corresponding path program 1 times [2021-11-02 14:12:39,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 14:12:39,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1402680825] [2021-11-02 14:12:39,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:12:39,675 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 14:12:39,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 14:12:39,676 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 14:12:39,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-02 14:12:39,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:12:39,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-02 14:12:39,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:12:40,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:12:40,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 14:12:41,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:12:41,920 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 14:12:41,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1402680825] [2021-11-02 14:12:41,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1402680825] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 14:12:41,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:12:41,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 12] imperfect sequences [] total 16 [2021-11-02 14:12:41,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556489801] [2021-11-02 14:12:41,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-02 14:12:41,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 14:12:41,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-02 14:12:41,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-11-02 14:12:41,922 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 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) [2021-11-02 14:12:44,020 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:12:46,045 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:12:48,063 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:12:48,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:12:48,349 INFO L93 Difference]: Finished difference Result 95 states and 110 transitions. [2021-11-02 14:12:48,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 14:12:48,350 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 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 [2021-11-02 14:12:48,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:12:48,350 INFO L225 Difference]: With dead ends: 95 [2021-11-02 14:12:48,350 INFO L226 Difference]: Without dead ends: 69 [2021-11-02 14:12:48,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 41 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1006.73ms TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2021-11-02 14:12:48,351 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6206.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.62ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 6336.58ms IncrementalHoareTripleChecker+Time [2021-11-02 14:12:48,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 251 Unknown, 0 Unchecked, 2.62ms Time], IncrementalHoareTripleChecker [1 Valid, 184 Invalid, 2 Unknown, 64 Unchecked, 6336.58ms Time] [2021-11-02 14:12:48,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-02 14:12:48,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2021-11-02 14:12:48,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 65 states have (on average 1.2307692307692308) internal successors, (80), 67 states have internal predecessors, (80), 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) [2021-11-02 14:12:48,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 80 transitions. [2021-11-02 14:12:48,366 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 80 transitions. Word has length 31 [2021-11-02 14:12:48,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:12:48,366 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 80 transitions. [2021-11-02 14:12:48,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 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) [2021-11-02 14:12:48,366 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 80 transitions. [2021-11-02 14:12:48,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-02 14:12:48,367 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:12:48,367 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] [2021-11-02 14:12:48,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-02 14:12:48,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 14:12:48,577 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 14:12:48,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:12:48,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1717651489, now seen corresponding path program 1 times [2021-11-02 14:12:48,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 14:12:48,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [285299575] [2021-11-02 14:12:48,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:12:48,579 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 14:12:48,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 14:12:48,579 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 14:12:48,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-02 14:12:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:12:48,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-02 14:12:48,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:12:49,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:12:49,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 14:12:49,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:12:49,468 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 14:12:49,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [285299575] [2021-11-02 14:12:49,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [285299575] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 14:12:49,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:12:49,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 6] imperfect sequences [] total 12 [2021-11-02 14:12:49,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116599612] [2021-11-02 14:12:49,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 14:12:49,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 14:12:49,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 14:12:49,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-02 14:12:49,470 INFO L87 Difference]: Start difference. First operand 68 states and 80 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 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) [2021-11-02 14:12:52,007 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:12:52,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:12:52,388 INFO L93 Difference]: Finished difference Result 94 states and 108 transitions. [2021-11-02 14:12:52,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 14:12:52,389 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 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 [2021-11-02 14:12:52,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:12:52,389 INFO L225 Difference]: With dead ends: 94 [2021-11-02 14:12:52,389 INFO L226 Difference]: Without dead ends: 70 [2021-11-02 14:12:52,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 542.28ms TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-11-02 14:12:52,390 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 31 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2595.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.96ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 2704.70ms IncrementalHoareTripleChecker+Time [2021-11-02 14:12:52,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 0 Invalid, 267 Unknown, 0 Unchecked, 2.96ms Time], IncrementalHoareTripleChecker [2 Valid, 202 Invalid, 1 Unknown, 62 Unchecked, 2704.70ms Time] [2021-11-02 14:12:52,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-11-02 14:12:52,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-11-02 14:12:52,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 67 states have (on average 1.2238805970149254) internal successors, (82), 69 states have internal predecessors, (82), 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) [2021-11-02 14:12:52,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 82 transitions. [2021-11-02 14:12:52,394 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 82 transitions. Word has length 31 [2021-11-02 14:12:52,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:12:52,394 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 82 transitions. [2021-11-02 14:12:52,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 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) [2021-11-02 14:12:52,394 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 82 transitions. [2021-11-02 14:12:52,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-02 14:12:52,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:12:52,395 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] [2021-11-02 14:12:52,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-02 14:12:52,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 14:12:52,610 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 14:12:52,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:12:52,610 INFO L85 PathProgramCache]: Analyzing trace with hash 57355873, now seen corresponding path program 1 times [2021-11-02 14:12:52,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 14:12:52,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2147118257] [2021-11-02 14:12:52,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:12:52,611 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 14:12:52,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 14:12:52,612 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 14:12:52,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-02 14:12:52,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:12:52,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 14:12:52,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:12:53,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:12:53,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 14:12:53,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:12:53,386 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 14:12:53,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2147118257] [2021-11-02 14:12:53,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2147118257] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 14:12:53,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:12:53,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-02 14:12:53,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116322412] [2021-11-02 14:12:53,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 14:12:53,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 14:12:53,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 14:12:53,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 14:12:53,388 INFO L87 Difference]: Start difference. First operand 70 states and 82 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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) [2021-11-02 14:12:55,782 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:12:56,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:12:56,187 INFO L93 Difference]: Finished difference Result 99 states and 112 transitions. [2021-11-02 14:12:56,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 14:12:56,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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 [2021-11-02 14:12:56,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:12:56,188 INFO L225 Difference]: With dead ends: 99 [2021-11-02 14:12:56,188 INFO L226 Difference]: Without dead ends: 97 [2021-11-02 14:12:56,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 91.62ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-02 14:12:56,189 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 55 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2617.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.49ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2725.76ms IncrementalHoareTripleChecker+Time [2021-11-02 14:12:56,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 0 Invalid, 206 Unknown, 0 Unchecked, 3.49ms Time], IncrementalHoareTripleChecker [3 Valid, 202 Invalid, 1 Unknown, 0 Unchecked, 2725.76ms Time] [2021-11-02 14:12:56,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-11-02 14:12:56,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 76. [2021-11-02 14:12:56,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 73 states have (on average 1.2191780821917808) internal successors, (89), 75 states have internal predecessors, (89), 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) [2021-11-02 14:12:56,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 89 transitions. [2021-11-02 14:12:56,203 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 89 transitions. Word has length 31 [2021-11-02 14:12:56,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:12:56,203 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 89 transitions. [2021-11-02 14:12:56,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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) [2021-11-02 14:12:56,203 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 89 transitions. [2021-11-02 14:12:56,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-02 14:12:56,204 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:12:56,204 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] [2021-11-02 14:12:56,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-02 14:12:56,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 14:12:56,408 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 14:12:56,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:12:56,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1622485073, now seen corresponding path program 1 times [2021-11-02 14:12:56,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 14:12:56,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326211827] [2021-11-02 14:12:56,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:12:56,409 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 14:12:56,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 14:12:56,410 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 14:12:56,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-02 14:12:56,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:12:56,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-02 14:12:56,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:12:56,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:12:56,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 14:12:57,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:12:57,039 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 14:12:57,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1326211827] [2021-11-02 14:12:57,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1326211827] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 14:12:57,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:12:57,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-02 14:12:57,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832576967] [2021-11-02 14:12:57,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 14:12:57,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 14:12:57,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 14:12:57,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-02 14:12:57,041 INFO L87 Difference]: Start difference. First operand 76 states and 89 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 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) [2021-11-02 14:12:59,707 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:13:00,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:13:00,094 INFO L93 Difference]: Finished difference Result 127 states and 149 transitions. [2021-11-02 14:13:00,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 14:13:00,095 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 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 31 [2021-11-02 14:13:00,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:13:00,095 INFO L225 Difference]: With dead ends: 127 [2021-11-02 14:13:00,095 INFO L226 Difference]: Without dead ends: 83 [2021-11-02 14:13:00,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 282.02ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-02 14:13:00,096 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2815.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.87ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 2961.98ms IncrementalHoareTripleChecker+Time [2021-11-02 14:13:00,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 355 Unknown, 0 Unchecked, 3.87ms Time], IncrementalHoareTripleChecker [7 Valid, 286 Invalid, 1 Unknown, 61 Unchecked, 2961.98ms Time] [2021-11-02 14:13:00,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-11-02 14:13:00,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 76. [2021-11-02 14:13:00,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 73 states have (on average 1.2054794520547945) internal successors, (88), 75 states have internal predecessors, (88), 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) [2021-11-02 14:13:00,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 88 transitions. [2021-11-02 14:13:00,104 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 88 transitions. Word has length 31 [2021-11-02 14:13:00,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:13:00,104 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 88 transitions. [2021-11-02 14:13:00,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 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) [2021-11-02 14:13:00,104 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 88 transitions. [2021-11-02 14:13:00,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-02 14:13:00,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:13:00,105 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] [2021-11-02 14:13:00,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-02 14:13:00,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 14:13:00,311 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 14:13:00,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:13:00,312 INFO L85 PathProgramCache]: Analyzing trace with hash 2014625500, now seen corresponding path program 1 times [2021-11-02 14:13:00,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 14:13:00,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2025714604] [2021-11-02 14:13:00,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:13:00,313 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 14:13:00,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 14:13:00,314 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 14:13:00,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-02 14:13:00,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:13:00,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 14:13:00,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:13:00,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:13:00,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 14:13:01,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:13:01,150 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 14:13:01,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2025714604] [2021-11-02 14:13:01,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2025714604] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 14:13:01,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:13:01,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-02 14:13:01,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249555020] [2021-11-02 14:13:01,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 14:13:01,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 14:13:01,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 14:13:01,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 14:13:01,151 INFO L87 Difference]: Start difference. First operand 76 states and 88 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2021-11-02 14:13:03,508 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:13:03,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:13:03,764 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2021-11-02 14:13:03,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 14:13:03,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 32 [2021-11-02 14:13:03,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:13:03,766 INFO L225 Difference]: With dead ends: 81 [2021-11-02 14:13:03,766 INFO L226 Difference]: Without dead ends: 79 [2021-11-02 14:13:03,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 87.76ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-02 14:13:03,770 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 50 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2453.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.42ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2554.00ms IncrementalHoareTripleChecker+Time [2021-11-02 14:13:03,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 0 Invalid, 162 Unknown, 0 Unchecked, 2.42ms Time], IncrementalHoareTripleChecker [1 Valid, 160 Invalid, 1 Unknown, 0 Unchecked, 2554.00ms Time] [2021-11-02 14:13:03,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-02 14:13:03,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 68. [2021-11-02 14:13:03,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 66 states have (on average 1.196969696969697) internal successors, (79), 67 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) [2021-11-02 14:13:03,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 79 transitions. [2021-11-02 14:13:03,773 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 79 transitions. Word has length 32 [2021-11-02 14:13:03,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:13:03,773 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 79 transitions. [2021-11-02 14:13:03,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2021-11-02 14:13:03,774 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 79 transitions. [2021-11-02 14:13:03,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-02 14:13:03,774 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:13:03,774 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] [2021-11-02 14:13:03,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-02 14:13:03,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 14:13:03,978 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 14:13:03,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:13:03,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1925927232, now seen corresponding path program 1 times [2021-11-02 14:13:03,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 14:13:03,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780174894] [2021-11-02 14:13:03,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:13:03,980 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 14:13:03,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 14:13:03,981 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 14:13:03,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-02 14:13:04,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:13:04,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 14:13:04,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:13:04,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:13:04,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 14:13:04,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:13:04,708 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 14:13:04,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780174894] [2021-11-02 14:13:04,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [780174894] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 14:13:04,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:13:04,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 5] imperfect sequences [] total 9 [2021-11-02 14:13:04,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174286645] [2021-11-02 14:13:04,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 14:13:04,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 14:13:04,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 14:13:04,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-02 14:13:04,709 INFO L87 Difference]: Start difference. First operand 68 states and 79 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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) [2021-11-02 14:13:07,435 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:13:07,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:13:07,932 INFO L93 Difference]: Finished difference Result 96 states and 109 transitions. [2021-11-02 14:13:07,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 14:13:07,933 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 [2021-11-02 14:13:07,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:13:07,933 INFO L225 Difference]: With dead ends: 96 [2021-11-02 14:13:07,934 INFO L226 Difference]: Without dead ends: 81 [2021-11-02 14:13:07,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 478.17ms TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-11-02 14:13:07,934 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 90 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2795.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.70ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 2940.13ms IncrementalHoareTripleChecker+Time [2021-11-02 14:13:07,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 0 Invalid, 290 Unknown, 0 Unchecked, 5.70ms Time], IncrementalHoareTripleChecker [2 Valid, 285 Invalid, 1 Unknown, 2 Unchecked, 2940.13ms Time] [2021-11-02 14:13:07,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-02 14:13:07,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2021-11-02 14:13:07,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 73 states have (on average 1.1917808219178083) internal successors, (87), 74 states have internal predecessors, (87), 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) [2021-11-02 14:13:07,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 87 transitions. [2021-11-02 14:13:07,937 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 87 transitions. Word has length 36 [2021-11-02 14:13:07,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:13:07,937 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 87 transitions. [2021-11-02 14:13:07,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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) [2021-11-02 14:13:07,937 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 87 transitions. [2021-11-02 14:13:07,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-02 14:13:07,938 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:13:07,938 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] [2021-11-02 14:13:07,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-02 14:13:08,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 14:13:08,144 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 14:13:08,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:13:08,146 INFO L85 PathProgramCache]: Analyzing trace with hash 192927141, now seen corresponding path program 1 times [2021-11-02 14:13:08,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 14:13:08,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [729446269] [2021-11-02 14:13:08,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:13:08,147 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 14:13:08,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 14:13:08,148 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 14:13:08,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-02 14:13:08,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:13:08,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 14:13:08,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:13:08,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:13:08,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 14:13:08,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:13:08,995 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 14:13:08,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [729446269] [2021-11-02 14:13:08,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [729446269] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 14:13:08,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:13:08,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 4] imperfect sequences [] total 10 [2021-11-02 14:13:08,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357274972] [2021-11-02 14:13:08,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 14:13:08,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 14:13:08,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 14:13:08,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-02 14:13:08,996 INFO L87 Difference]: Start difference. First operand 75 states and 87 transitions. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 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) [2021-11-02 14:13:09,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:13:09,703 INFO L93 Difference]: Finished difference Result 113 states and 134 transitions. [2021-11-02 14:13:09,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 14:13:09,704 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 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 [2021-11-02 14:13:09,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:13:09,704 INFO L225 Difference]: With dead ends: 113 [2021-11-02 14:13:09,704 INFO L226 Difference]: Without dead ends: 94 [2021-11-02 14:13:09,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 476.46ms TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-02 14:13:09,705 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 521.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.73ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 175 IncrementalHoareTripleChecker+Unchecked, 590.68ms IncrementalHoareTripleChecker+Time [2021-11-02 14:13:09,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 398 Unknown, 0 Unchecked, 2.73ms Time], IncrementalHoareTripleChecker [1 Valid, 222 Invalid, 0 Unknown, 175 Unchecked, 590.68ms Time] [2021-11-02 14:13:09,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-11-02 14:13:09,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 77. [2021-11-02 14:13:09,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 75 states have (on average 1.1866666666666668) internal successors, (89), 76 states have internal predecessors, (89), 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) [2021-11-02 14:13:09,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 89 transitions. [2021-11-02 14:13:09,708 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 89 transitions. Word has length 37 [2021-11-02 14:13:09,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:13:09,709 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 89 transitions. [2021-11-02 14:13:09,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 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) [2021-11-02 14:13:09,709 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 89 transitions. [2021-11-02 14:13:09,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-02 14:13:09,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:13:09,710 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] [2021-11-02 14:13:09,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-02 14:13:09,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 14:13:09,921 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 14:13:09,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:13:09,921 INFO L85 PathProgramCache]: Analyzing trace with hash 451092579, now seen corresponding path program 1 times [2021-11-02 14:13:09,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 14:13:09,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [31172537] [2021-11-02 14:13:09,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:13:09,922 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 14:13:09,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 14:13:09,924 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 14:13:09,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-02 14:13:10,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:13:10,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-02 14:13:10,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:13:10,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:13:10,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 14:13:11,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:13:11,178 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 14:13:11,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [31172537] [2021-11-02 14:13:11,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [31172537] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 14:13:11,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:13:11,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 8] imperfect sequences [] total 15 [2021-11-02 14:13:11,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674837865] [2021-11-02 14:13:11,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-02 14:13:11,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 14:13:11,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-02 14:13:11,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-11-02 14:13:11,180 INFO L87 Difference]: Start difference. First operand 77 states and 89 transitions. Second operand has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 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) [2021-11-02 14:13:14,423 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:13:14,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:13:14,902 INFO L93 Difference]: Finished difference Result 129 states and 153 transitions. [2021-11-02 14:13:14,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-02 14:13:14,902 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 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 [2021-11-02 14:13:14,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:13:14,904 INFO L225 Difference]: With dead ends: 129 [2021-11-02 14:13:14,904 INFO L226 Difference]: Without dead ends: 93 [2021-11-02 14:13:14,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1215.90ms TimeCoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2021-11-02 14:13:14,905 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 40 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3002.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.74ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 120 IncrementalHoareTripleChecker+Unchecked, 3152.78ms IncrementalHoareTripleChecker+Time [2021-11-02 14:13:14,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 0 Invalid, 492 Unknown, 0 Unchecked, 4.74ms Time], IncrementalHoareTripleChecker [9 Valid, 362 Invalid, 1 Unknown, 120 Unchecked, 3152.78ms Time] [2021-11-02 14:13:14,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-11-02 14:13:14,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 87. [2021-11-02 14:13:14,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 85 states have (on average 1.2) internal successors, (102), 86 states have internal predecessors, (102), 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) [2021-11-02 14:13:14,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 102 transitions. [2021-11-02 14:13:14,911 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 102 transitions. Word has length 37 [2021-11-02 14:13:14,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:13:14,911 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 102 transitions. [2021-11-02 14:13:14,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 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) [2021-11-02 14:13:14,911 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 102 transitions. [2021-11-02 14:13:14,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-02 14:13:14,912 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:13:14,912 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] [2021-11-02 14:13:14,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-02 14:13:15,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 14:13:15,124 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 14:13:15,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:13:15,124 INFO L85 PathProgramCache]: Analyzing trace with hash 317079073, now seen corresponding path program 1 times [2021-11-02 14:13:15,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 14:13:15,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1981562746] [2021-11-02 14:13:15,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:13:15,125 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 14:13:15,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 14:13:15,126 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 14:13:15,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-02 14:13:15,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:13:15,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-02 14:13:15,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:13:15,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:13:15,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 14:13:16,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:13:16,606 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 14:13:16,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1981562746] [2021-11-02 14:13:16,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1981562746] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 14:13:16,607 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:13:16,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 9] imperfect sequences [] total 16 [2021-11-02 14:13:16,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012567007] [2021-11-02 14:13:16,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-02 14:13:16,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 14:13:16,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-02 14:13:16,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-11-02 14:13:16,608 INFO L87 Difference]: Start difference. First operand 87 states and 102 transitions. Second operand has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 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) [2021-11-02 14:13:19,965 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:13:20,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:13:20,598 INFO L93 Difference]: Finished difference Result 136 states and 159 transitions. [2021-11-02 14:13:20,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-02 14:13:20,599 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 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 [2021-11-02 14:13:20,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:13:20,599 INFO L225 Difference]: With dead ends: 136 [2021-11-02 14:13:20,599 INFO L226 Difference]: Without dead ends: 102 [2021-11-02 14:13:20,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1352.62ms TimeCoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2021-11-02 14:13:20,600 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3213.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.36ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 3388.20ms IncrementalHoareTripleChecker+Time [2021-11-02 14:13:20,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 529 Unknown, 0 Unchecked, 5.36ms Time], IncrementalHoareTripleChecker [13 Valid, 453 Invalid, 1 Unknown, 62 Unchecked, 3388.20ms Time] [2021-11-02 14:13:20,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-11-02 14:13:20,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 89. [2021-11-02 14:13:20,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 87 states have (on average 1.1954022988505748) internal successors, (104), 88 states have internal predecessors, (104), 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) [2021-11-02 14:13:20,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 104 transitions. [2021-11-02 14:13:20,606 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 104 transitions. Word has length 37 [2021-11-02 14:13:20,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:13:20,606 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 104 transitions. [2021-11-02 14:13:20,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 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) [2021-11-02 14:13:20,606 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 104 transitions. [2021-11-02 14:13:20,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-02 14:13:20,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:13:20,607 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] [2021-11-02 14:13:20,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-02 14:13:20,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 14:13:20,808 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 14:13:20,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:13:20,809 INFO L85 PathProgramCache]: Analyzing trace with hash 535933791, now seen corresponding path program 1 times [2021-11-02 14:13:20,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 14:13:20,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [511370599] [2021-11-02 14:13:20,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:13:20,809 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 14:13:20,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 14:13:20,810 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 14:13:20,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-02 14:13:20,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:13:20,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-02 14:13:20,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:13:21,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:13:21,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 14:13:22,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:13:22,514 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 14:13:22,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [511370599] [2021-11-02 14:13:22,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [511370599] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 14:13:22,514 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:13:22,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 17 [2021-11-02 14:13:22,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498777615] [2021-11-02 14:13:22,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-02 14:13:22,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 14:13:22,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-02 14:13:22,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-11-02 14:13:22,515 INFO L87 Difference]: Start difference. First operand 89 states and 104 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 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) [2021-11-02 14:13:25,909 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:13:26,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:13:26,488 INFO L93 Difference]: Finished difference Result 137 states and 159 transitions. [2021-11-02 14:13:26,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-02 14:13:26,489 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 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 [2021-11-02 14:13:26,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:13:26,489 INFO L225 Difference]: With dead ends: 137 [2021-11-02 14:13:26,489 INFO L226 Difference]: Without dead ends: 105 [2021-11-02 14:13:26,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1423.58ms TimeCoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2021-11-02 14:13:26,490 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3202.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.93ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 3379.23ms IncrementalHoareTripleChecker+Time [2021-11-02 14:13:26,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 563 Unknown, 0 Unchecked, 4.93ms Time], IncrementalHoareTripleChecker [12 Valid, 488 Invalid, 1 Unknown, 62 Unchecked, 3379.23ms Time] [2021-11-02 14:13:26,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-11-02 14:13:26,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 91. [2021-11-02 14:13:26,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 89 states have (on average 1.1910112359550562) internal successors, (106), 90 states have internal predecessors, (106), 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) [2021-11-02 14:13:26,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 106 transitions. [2021-11-02 14:13:26,493 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 106 transitions. Word has length 37 [2021-11-02 14:13:26,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:13:26,494 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 106 transitions. [2021-11-02 14:13:26,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 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) [2021-11-02 14:13:26,494 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 106 transitions. [2021-11-02 14:13:26,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-02 14:13:26,494 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:13:26,494 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] [2021-11-02 14:13:26,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-02 14:13:26,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 14:13:26,695 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 14:13:26,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:13:26,696 INFO L85 PathProgramCache]: Analyzing trace with hash -281714659, now seen corresponding path program 1 times [2021-11-02 14:13:26,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 14:13:26,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1974132070] [2021-11-02 14:13:26,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:13:26,696 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 14:13:26,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 14:13:26,697 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 14:13:26,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-02 14:13:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:13:26,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-02 14:13:26,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:13:27,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:13:27,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 14:13:27,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:13:27,846 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 14:13:27,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1974132070] [2021-11-02 14:13:27,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1974132070] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 14:13:27,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:13:27,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 9] imperfect sequences [] total 17 [2021-11-02 14:13:27,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991002078] [2021-11-02 14:13:27,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-02 14:13:27,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 14:13:27,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-02 14:13:27,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-11-02 14:13:27,847 INFO L87 Difference]: Start difference. First operand 91 states and 106 transitions. Second operand has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 states have internal predecessors, (55), 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) [2021-11-02 14:13:31,107 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:13:31,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:13:31,640 INFO L93 Difference]: Finished difference Result 138 states and 159 transitions. [2021-11-02 14:13:31,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-02 14:13:31,641 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 states have internal predecessors, (55), 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 [2021-11-02 14:13:31,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:13:31,641 INFO L225 Difference]: With dead ends: 138 [2021-11-02 14:13:31,641 INFO L226 Difference]: Without dead ends: 108 [2021-11-02 14:13:31,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1195.22ms TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2021-11-02 14:13:31,642 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 35 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3065.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.58ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 3224.04ms IncrementalHoareTripleChecker+Time [2021-11-02 14:13:31,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 0 Invalid, 503 Unknown, 0 Unchecked, 4.58ms Time], IncrementalHoareTripleChecker [12 Valid, 430 Invalid, 1 Unknown, 60 Unchecked, 3224.04ms Time] [2021-11-02 14:13:31,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-11-02 14:13:31,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 93. [2021-11-02 14:13:31,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 91 states have (on average 1.1868131868131868) internal successors, (108), 92 states have internal predecessors, (108), 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) [2021-11-02 14:13:31,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 108 transitions. [2021-11-02 14:13:31,645 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 108 transitions. Word has length 37 [2021-11-02 14:13:31,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:13:31,645 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 108 transitions. [2021-11-02 14:13:31,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 states have internal predecessors, (55), 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) [2021-11-02 14:13:31,646 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 108 transitions. [2021-11-02 14:13:31,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-02 14:13:31,646 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:13:31,646 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] [2021-11-02 14:13:31,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-02 14:13:31,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 14:13:31,852 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 14:13:31,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:13:31,852 INFO L85 PathProgramCache]: Analyzing trace with hash 2019107931, now seen corresponding path program 1 times [2021-11-02 14:13:31,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 14:13:31,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1730656526] [2021-11-02 14:13:31,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:13:31,853 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 14:13:31,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 14:13:31,854 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 14:13:31,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-02 14:13:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:13:31,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-02 14:13:31,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:13:32,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:13:32,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 14:13:33,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:13:33,125 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 14:13:33,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1730656526] [2021-11-02 14:13:33,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1730656526] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 14:13:33,125 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:13:33,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 9] imperfect sequences [] total 17 [2021-11-02 14:13:33,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197220439] [2021-11-02 14:13:33,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-02 14:13:33,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 14:13:33,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-02 14:13:33,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-11-02 14:13:33,126 INFO L87 Difference]: Start difference. First operand 93 states and 108 transitions. Second operand has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 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) [2021-11-02 14:13:36,413 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:13:36,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:13:36,919 INFO L93 Difference]: Finished difference Result 139 states and 159 transitions. [2021-11-02 14:13:36,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-02 14:13:36,919 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 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 [2021-11-02 14:13:36,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:13:36,920 INFO L225 Difference]: With dead ends: 139 [2021-11-02 14:13:36,920 INFO L226 Difference]: Without dead ends: 111 [2021-11-02 14:13:36,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1266.66ms TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2021-11-02 14:13:36,920 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 45 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3037.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.46ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 110 IncrementalHoareTripleChecker+Unchecked, 3208.96ms IncrementalHoareTripleChecker+Time [2021-11-02 14:13:36,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 0 Invalid, 537 Unknown, 0 Unchecked, 3.46ms Time], IncrementalHoareTripleChecker [13 Valid, 413 Invalid, 1 Unknown, 110 Unchecked, 3208.96ms Time] [2021-11-02 14:13:36,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-11-02 14:13:36,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 95. [2021-11-02 14:13:36,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 93 states have (on average 1.1827956989247312) internal successors, (110), 94 states have internal predecessors, (110), 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) [2021-11-02 14:13:36,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 110 transitions. [2021-11-02 14:13:36,924 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 110 transitions. Word has length 37 [2021-11-02 14:13:36,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:13:36,924 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 110 transitions. [2021-11-02 14:13:36,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 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) [2021-11-02 14:13:36,925 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 110 transitions. [2021-11-02 14:13:36,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-02 14:13:36,925 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:13:36,925 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] [2021-11-02 14:13:36,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-02 14:13:37,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 14:13:37,129 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 14:13:37,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:13:37,130 INFO L85 PathProgramCache]: Analyzing trace with hash 998039577, now seen corresponding path program 1 times [2021-11-02 14:13:37,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 14:13:37,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92385860] [2021-11-02 14:13:37,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:13:37,130 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 14:13:37,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 14:13:37,131 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 14:13:37,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-02 14:13:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:13:37,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-02 14:13:37,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:13:37,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:13:37,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 14:13:38,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:13:38,373 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 14:13:38,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [92385860] [2021-11-02 14:13:38,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [92385860] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 14:13:38,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:13:38,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 9] imperfect sequences [] total 17 [2021-11-02 14:13:38,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252068923] [2021-11-02 14:13:38,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-02 14:13:38,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 14:13:38,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-02 14:13:38,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-11-02 14:13:38,374 INFO L87 Difference]: Start difference. First operand 95 states and 110 transitions. Second operand has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 states have internal predecessors, (59), 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) [2021-11-02 14:13:41,469 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:13:41,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:13:41,974 INFO L93 Difference]: Finished difference Result 139 states and 158 transitions. [2021-11-02 14:13:41,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 14:13:41,974 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 states have internal predecessors, (59), 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 [2021-11-02 14:13:41,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:13:41,975 INFO L225 Difference]: With dead ends: 139 [2021-11-02 14:13:41,975 INFO L226 Difference]: Without dead ends: 113 [2021-11-02 14:13:41,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1139.13ms TimeCoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2021-11-02 14:13:41,975 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2964.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.91ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 3115.36ms IncrementalHoareTripleChecker+Time [2021-11-02 14:13:41,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 409 Unknown, 0 Unchecked, 2.91ms Time], IncrementalHoareTripleChecker [9 Valid, 384 Invalid, 1 Unknown, 15 Unchecked, 3115.36ms Time] [2021-11-02 14:13:41,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-11-02 14:13:41,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 112. [2021-11-02 14:13:41,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 110 states have (on average 1.1636363636363636) internal successors, (128), 111 states have internal predecessors, (128), 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) [2021-11-02 14:13:41,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 128 transitions. [2021-11-02 14:13:41,979 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 128 transitions. Word has length 37 [2021-11-02 14:13:41,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:13:41,979 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 128 transitions. [2021-11-02 14:13:41,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 states have internal predecessors, (59), 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) [2021-11-02 14:13:41,980 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 128 transitions. [2021-11-02 14:13:41,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-02 14:13:41,980 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:13:41,980 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] [2021-11-02 14:13:41,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-02 14:13:42,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 14:13:42,190 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 14:13:42,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:13:42,190 INFO L85 PathProgramCache]: Analyzing trace with hash -13077673, now seen corresponding path program 1 times [2021-11-02 14:13:42,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 14:13:42,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [85009970] [2021-11-02 14:13:42,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:13:42,191 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 14:13:42,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 14:13:42,192 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 14:13:42,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-02 14:13:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:13:42,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-02 14:13:42,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:13:42,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:13:42,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 14:13:42,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:13:42,727 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 14:13:42,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [85009970] [2021-11-02 14:13:42,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [85009970] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 14:13:42,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:13:42,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 3] imperfect sequences [] total 7 [2021-11-02 14:13:42,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959033798] [2021-11-02 14:13:42,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 14:13:42,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 14:13:42,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 14:13:42,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-02 14:13:42,728 INFO L87 Difference]: Start difference. First operand 112 states and 128 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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) [2021-11-02 14:13:45,161 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:13:45,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:13:45,294 INFO L93 Difference]: Finished difference Result 150 states and 174 transitions. [2021-11-02 14:13:45,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 14:13:45,295 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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 [2021-11-02 14:13:45,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:13:45,295 INFO L225 Difference]: With dead ends: 150 [2021-11-02 14:13:45,295 INFO L226 Difference]: Without dead ends: 95 [2021-11-02 14:13:45,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 282.14ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-02 14:13:45,296 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2394.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.03ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 2468.44ms IncrementalHoareTripleChecker+Time [2021-11-02 14:13:45,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 222 Unknown, 0 Unchecked, 1.03ms Time], IncrementalHoareTripleChecker [1 Valid, 161 Invalid, 1 Unknown, 59 Unchecked, 2468.44ms Time] [2021-11-02 14:13:45,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-02 14:13:45,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-11-02 14:13:45,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 93 states have (on average 1.1720430107526882) internal successors, (109), 94 states have internal predecessors, (109), 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) [2021-11-02 14:13:45,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 109 transitions. [2021-11-02 14:13:45,299 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 109 transitions. Word has length 37 [2021-11-02 14:13:45,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:13:45,299 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 109 transitions. [2021-11-02 14:13:45,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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) [2021-11-02 14:13:45,300 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 109 transitions. [2021-11-02 14:13:45,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-02 14:13:45,304 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:13:45,304 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] [2021-11-02 14:13:45,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-02 14:13:45,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 14:13:45,514 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 14:13:45,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:13:45,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1284407490, now seen corresponding path program 1 times [2021-11-02 14:13:45,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 14:13:45,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1800173820] [2021-11-02 14:13:45,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:13:45,515 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 14:13:45,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 14:13:45,516 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 14:13:45,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-02 14:13:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:13:45,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 14:13:45,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:13:45,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:13:45,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 14:13:46,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:13:46,163 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 14:13:46,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1800173820] [2021-11-02 14:13:46,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1800173820] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 14:13:46,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:13:46,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 5] imperfect sequences [] total 9 [2021-11-02 14:13:46,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745910284] [2021-11-02 14:13:46,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 14:13:46,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 14:13:46,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 14:13:46,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-02 14:13:46,165 INFO L87 Difference]: Start difference. First operand 95 states and 109 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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) [2021-11-02 14:13:48,717 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:13:49,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:13:49,120 INFO L93 Difference]: Finished difference Result 124 states and 138 transitions. [2021-11-02 14:13:49,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 14:13:49,120 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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 [2021-11-02 14:13:49,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:13:49,121 INFO L225 Difference]: With dead ends: 124 [2021-11-02 14:13:49,121 INFO L226 Difference]: Without dead ends: 90 [2021-11-02 14:13:49,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 421.30ms TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-11-02 14:13:49,122 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 195 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2603.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.36ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 106 IncrementalHoareTripleChecker+Unchecked, 2708.35ms IncrementalHoareTripleChecker+Time [2021-11-02 14:13:49,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 0 Invalid, 334 Unknown, 0 Unchecked, 3.36ms Time], IncrementalHoareTripleChecker [2 Valid, 225 Invalid, 1 Unknown, 106 Unchecked, 2708.35ms Time] [2021-11-02 14:13:49,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-11-02 14:13:49,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 69. [2021-11-02 14:13:49,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 67 states have (on average 1.208955223880597) internal successors, (81), 68 states have internal predecessors, (81), 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) [2021-11-02 14:13:49,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 81 transitions. [2021-11-02 14:13:49,124 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 81 transitions. Word has length 38 [2021-11-02 14:13:49,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:13:49,125 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 81 transitions. [2021-11-02 14:13:49,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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) [2021-11-02 14:13:49,125 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 81 transitions. [2021-11-02 14:13:49,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-02 14:13:49,125 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:13:49,125 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] [2021-11-02 14:13:49,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-11-02 14:13:49,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 14:13:49,337 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 14:13:49,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:13:49,337 INFO L85 PathProgramCache]: Analyzing trace with hash -649514281, now seen corresponding path program 1 times [2021-11-02 14:13:49,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 14:13:49,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [42066018] [2021-11-02 14:13:49,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:13:49,338 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 14:13:49,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-02 14:13:49,339 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 14:13:49,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-02 14:13:49,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 14:13:49,520 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 14:13:49,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 14:13:49,756 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-02 14:13:49,756 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-02 14:13:49,757 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-11-02 14:13:49,759 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2021-11-02 14:13:49,759 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2021-11-02 14:13:49,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-11-02 14:13:49,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-02 14:13:49,974 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:13:49,976 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-02 14:13:50,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 02:13:50 BoogieIcfgContainer [2021-11-02 14:13:50,048 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-02 14:13:50,049 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-02 14:13:50,049 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-02 14:13:50,049 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-02 14:13:50,050 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 02:12:11" (3/4) ... [2021-11-02 14:13:50,051 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-02 14:13:50,097 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-11-02 14:13:50,097 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-02 14:13:50,100 INFO L158 Benchmark]: Toolchain (without parser) took 100362.47ms. Allocated memory was 56.6MB in the beginning and 96.5MB in the end (delta: 39.8MB). Free memory was 29.0MB in the beginning and 36.7MB in the end (delta: -7.7MB). Peak memory consumption was 31.9MB. Max. memory is 16.1GB. [2021-11-02 14:13:50,101 INFO L158 Benchmark]: CDTParser took 0.44ms. Allocated memory is still 56.6MB. Free memory was 38.4MB in the beginning and 38.4MB in the end (delta: 41.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-02 14:13:50,101 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1393.63ms. Allocated memory was 56.6MB in the beginning and 96.5MB in the end (delta: 39.8MB). Free memory was 28.8MB in the beginning and 65.9MB in the end (delta: -37.2MB). Peak memory consumption was 29.2MB. Max. memory is 16.1GB. [2021-11-02 14:13:50,101 INFO L158 Benchmark]: Boogie Procedure Inliner took 121.84ms. Allocated memory is still 96.5MB. Free memory was 65.9MB in the beginning and 61.0MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-02 14:13:50,101 INFO L158 Benchmark]: Boogie Preprocessor took 40.63ms. Allocated memory is still 96.5MB. Free memory was 61.0MB in the beginning and 57.5MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-02 14:13:50,101 INFO L158 Benchmark]: RCFGBuilder took 474.32ms. Allocated memory is still 96.5MB. Free memory was 57.5MB in the beginning and 36.5MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-11-02 14:13:50,102 INFO L158 Benchmark]: TraceAbstraction took 98276.10ms. Allocated memory is still 96.5MB. Free memory was 36.5MB in the beginning and 42.6MB in the end (delta: -6.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-02 14:13:50,102 INFO L158 Benchmark]: Witness Printer took 48.35ms. Allocated memory is still 96.5MB. Free memory was 42.6MB in the beginning and 36.7MB in the end (delta: 5.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-02 14:13:50,110 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44ms. Allocated memory is still 56.6MB. Free memory was 38.4MB in the beginning and 38.4MB in the end (delta: 41.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1393.63ms. Allocated memory was 56.6MB in the beginning and 96.5MB in the end (delta: 39.8MB). Free memory was 28.8MB in the beginning and 65.9MB in the end (delta: -37.2MB). Peak memory consumption was 29.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 121.84ms. Allocated memory is still 96.5MB. Free memory was 65.9MB in the beginning and 61.0MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.63ms. Allocated memory is still 96.5MB. Free memory was 61.0MB in the beginning and 57.5MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 474.32ms. Allocated memory is still 96.5MB. Free memory was 57.5MB in the beginning and 36.5MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 98276.10ms. Allocated memory is still 96.5MB. Free memory was 36.5MB in the beginning and 42.6MB in the end (delta: -6.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 48.35ms. Allocated memory is still 96.5MB. Free memory was 42.6MB in the beginning and 36.7MB in the end (delta: 5.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 223]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L5937] short d1[160]; [L5938] short d2[160]; [L5939] int c = __VERIFIER_nondet_int(); [L5940] unsigned size = __VERIFIER_nondet_uint(); [L211] COND FALSE !(!cond) [L211] COND FALSE !(!cond) [L5871] COND TRUE n > 0 [L5872] char *sp = (char *)s; [L5873] unsigned long i = 0; [L5873] COND TRUE i < n [L5874] sp[i] = c [L5873] i++ [L5873] COND FALSE !(i < n) [L5876] return s; [L211] COND FALSE !(!cond) [L5883] size_t num_uint64s = n >> 3; [L5884] size_t rem = n & 0x7; [L5886] uint8_t *d = (uint8_t *)dst; [L5890] case 7: [L5892] case 6: [L5894] case 5: [L5896] case 4: [L5898] case 3: [L5900] case 2: [L5902] case 1: [L5903] d[0] = c [L5906] d += rem [L5908] uint64_t compounded = 0; [L5909] COND FALSE !(num_uint64s > 0 && c != 0) [L5921] size_t i = 0; [L5921] COND FALSE !(i < num_uint64s) [L5925] return dst; [L5908] uint64_t compounded = 0; [L5925] return dst; [L223] COND FALSE !(!cond) [L5655-L5658] COND TRUE len > 0 && a != ((void *)0) && b != ((void *)0) [L266] return __VERIFIER_nondet_ulong(); [L5660] size_t i = nondet_uint64_t(); [L211] COND FALSE !(!cond) [L5664] a[i] [L5664] b[i] [L223] COND TRUE !cond [L223] reach_error() - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 57 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 98138.30ms, OverallIterations: 22, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 23.85ms, AutomataDifference: 68508.51ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 10.64ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 21 mSolverCounterUnknown, 739 SdHoareTripleChecker+Valid, 63145.63ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 739 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 60365.43ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1274 IncrementalHoareTripleChecker+Unchecked, 4694 mSDsCounter, 108 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6323 IncrementalHoareTripleChecker+Invalid, 7726 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 108 mSolverCounterUnsat, 0 mSDtfsCounter, 6323 mSolverCounterSat, 85.54ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1461 GetRequests, 1158 SyntacticMatches, 18 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 817 ImplicationChecksByTransitivity, 14663.64ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=19, InterpolantAutomatonStates: 225, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 102.06ms AutomataMinimizationTime, 21 MinimizatonAttempts, 169 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 257.23ms SsaConstructionTime, 1447.32ms SatisfiabilityAnalysisTime, 22042.13ms InterpolantComputationTime, 751 NumberOfCodeBlocks, 751 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1382 ConstructedInterpolants, 152 QuantifiedInterpolants, 7778 SizeOfPredicates, 159 NumberOfNonLiveVariables, 2978 ConjunctsInSsa, 222 ConjunctsInUnsatCore, 42 InterpolantComputations, 42 PerfectInterpolantSequences, 0/0 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 proved your program to be incorrect! [2021-11-02 14:13:50,167 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 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE