./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 8de283a79f01a407383b7daa040c59e7c5c73f52f0f9c705f7021a208716cd24 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 09:46:19,452 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 09:46:19,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 09:46:19,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 09:46:19,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 09:46:19,512 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 09:46:19,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 09:46:19,517 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 09:46:19,518 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 09:46:19,523 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 09:46:19,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 09:46:19,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 09:46:19,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 09:46:19,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 09:46:19,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 09:46:19,532 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 09:46:19,533 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 09:46:19,534 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 09:46:19,536 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 09:46:19,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 09:46:19,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 09:46:19,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 09:46:19,542 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 09:46:19,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 09:46:19,545 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 09:46:19,548 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 09:46:19,549 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 09:46:19,549 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 09:46:19,550 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 09:46:19,551 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 09:46:19,551 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 09:46:19,551 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 09:46:19,552 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 09:46:19,553 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 09:46:19,553 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 09:46:19,554 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 09:46:19,555 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 09:46:19,555 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 09:46:19,555 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 09:46:19,556 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 09:46:19,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 09:46:19,557 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 09:46:19,578 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 09:46:19,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 09:46:19,579 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 09:46:19,579 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 09:46:19,580 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 09:46:19,580 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 09:46:19,580 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 09:46:19,580 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 09:46:19,581 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 09:46:19,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 09:46:19,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 09:46:19,582 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 09:46:19,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 09:46:19,582 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 09:46:19,582 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 09:46:19,582 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 09:46:19,582 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 09:46:19,582 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 09:46:19,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 09:46:19,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 09:46:19,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 09:46:19,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 09:46:19,583 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 09:46:19,583 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 09:46:19,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 09:46:19,583 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 09:46:19,584 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 09:46:19,585 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 09:46:19,585 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 09:46:19,585 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8de283a79f01a407383b7daa040c59e7c5c73f52f0f9c705f7021a208716cd24 [2021-11-06 09:46:19,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 09:46:19,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 09:46:19,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 09:46:19,794 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 09:46:19,794 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 09:46:19,795 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i [2021-11-06 09:46:19,872 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9e34c31a/35c607ab70d848baa0a22843ca48adbc/FLAG3dc9f11f6 [2021-11-06 09:46:20,500 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 09:46:20,500 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_eq_ignore_case_harness.i [2021-11-06 09:46:20,528 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9e34c31a/35c607ab70d848baa0a22843ca48adbc/FLAG3dc9f11f6 [2021-11-06 09:46:20,910 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9e34c31a/35c607ab70d848baa0a22843ca48adbc [2021-11-06 09:46:20,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 09:46:20,914 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 09:46:20,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 09:46:20,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 09:46:20,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 09:46:20,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:46:20" (1/1) ... [2021-11-06 09:46:20,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ede6560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:46:20, skipping insertion in model container [2021-11-06 09:46:20,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:46:20" (1/1) ... [2021-11-06 09:46:20,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 09:46:21,002 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 09:46:21,200 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/aws_array_eq_ignore_case_harness.i[4498,4511] [2021-11-06 09:46:21,207 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/aws_array_eq_ignore_case_harness.i[4558,4571] [2021-11-06 09:46:21,230 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 09:46:21,237 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 09:46:21,693 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:21,694 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:21,695 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:21,695 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:21,696 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:21,704 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:21,705 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:21,706 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:21,706 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:21,903 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 09:46:21,904 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 09:46:21,904 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 09:46:21,905 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 09:46:21,906 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 09:46:21,907 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 09:46:21,907 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 09:46:21,907 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 09:46:21,908 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 09:46:21,908 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 09:46:21,986 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 09:46:22,053 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:22,054 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:22,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 09:46:22,229 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 09:46:22,247 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/aws_array_eq_ignore_case_harness.i[4498,4511] [2021-11-06 09:46:22,249 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/aws_array_eq_ignore_case_harness.i[4558,4571] [2021-11-06 09:46:22,250 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 09:46:22,251 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 09:46:22,282 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:22,282 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:22,283 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:22,283 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:22,284 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:22,298 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:22,298 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:22,299 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:22,299 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:22,326 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 09:46:22,327 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 09:46:22,327 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 09:46:22,328 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 09:46:22,328 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 09:46:22,330 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 09:46:22,331 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 09:46:22,331 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 09:46:22,331 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 09:46:22,332 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 09:46:22,350 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 09:46:22,396 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:22,397 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 09:46:22,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 09:46:22,594 INFO L208 MainTranslator]: Completed translation [2021-11-06 09:46:22,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:46:22 WrapperNode [2021-11-06 09:46:22,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 09:46:22,596 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 09:46:22,596 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 09:46:22,596 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 09:46:22,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:46:22" (1/1) ... [2021-11-06 09:46:22,676 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:46:22" (1/1) ... [2021-11-06 09:46:22,743 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 09:46:22,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 09:46:22,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 09:46:22,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 09:46:22,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:46:22" (1/1) ... [2021-11-06 09:46:22,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:46:22" (1/1) ... [2021-11-06 09:46:22,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:46:22" (1/1) ... [2021-11-06 09:46:22,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:46:22" (1/1) ... [2021-11-06 09:46:22,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:46:22" (1/1) ... [2021-11-06 09:46:22,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:46:22" (1/1) ... [2021-11-06 09:46:22,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:46:22" (1/1) ... [2021-11-06 09:46:22,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 09:46:22,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 09:46:22,822 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 09:46:22,822 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 09:46:22,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:46:22" (1/1) ... [2021-11-06 09:46:22,853 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 09:46:22,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 09:46:22,885 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) [2021-11-06 09:46:22,902 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 [2021-11-06 09:46:22,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 09:46:22,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 09:46:22,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 09:46:22,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 09:46:22,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 09:46:22,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 09:46:22,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 09:46:22,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 09:46:22,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 09:46:29,465 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 09:46:29,466 INFO L299 CfgBuilder]: Removed 61 assume(true) statements. [2021-11-06 09:46:29,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:46:29 BoogieIcfgContainer [2021-11-06 09:46:29,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 09:46:29,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 09:46:29,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 09:46:29,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 09:46:29,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:46:20" (1/3) ... [2021-11-06 09:46:29,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4639dec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:46:29, skipping insertion in model container [2021-11-06 09:46:29,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:46:22" (2/3) ... [2021-11-06 09:46:29,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4639dec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:46:29, skipping insertion in model container [2021-11-06 09:46:29,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:46:29" (3/3) ... [2021-11-06 09:46:29,473 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_eq_ignore_case_harness.i [2021-11-06 09:46:29,478 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 09:46:29,479 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-06 09:46:29,508 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 09:46:29,513 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 [2021-11-06 09:46:29,513 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-06 09:46:29,523 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 63 states have (on average 1.4761904761904763) internal successors, (93), 66 states have internal predecessors, (93), 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) [2021-11-06 09:46:29,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-06 09:46:29,528 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 09:46:29,528 INFO L513 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] [2021-11-06 09:46:29,529 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 09:46:29,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 09:46:29,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1732099540, now seen corresponding path program 1 times [2021-11-06 09:46:29,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 09:46:29,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178512880] [2021-11-06 09:46:29,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 09:46:29,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 09:46:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 09:46:30,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 09:46:30,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 09:46:30,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178512880] [2021-11-06 09:46:30,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178512880] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 09:46:30,015 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 09:46:30,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 09:46:30,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954958736] [2021-11-06 09:46:30,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 09:46:30,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 09:46:30,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 09:46:30,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 09:46:30,033 INFO L87 Difference]: Start difference. First operand has 67 states, 63 states have (on average 1.4761904761904763) internal successors, (93), 66 states have internal predecessors, (93), 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 13.5) internal successors, (27), 2 states have internal predecessors, (27), 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) [2021-11-06 09:46:30,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 09:46:30,053 INFO L93 Difference]: Finished difference Result 131 states and 182 transitions. [2021-11-06 09:46:30,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 09:46:30,054 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 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 27 [2021-11-06 09:46:30,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 09:46:30,059 INFO L225 Difference]: With dead ends: 131 [2021-11-06 09:46:30,060 INFO L226 Difference]: Without dead ends: 61 [2021-11-06 09:46:30,061 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 09:46:30,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-06 09:46:30,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-11-06 09:46:30,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 60 states have internal predecessors, (71), 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) [2021-11-06 09:46:30,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2021-11-06 09:46:30,088 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 27 [2021-11-06 09:46:30,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 09:46:30,088 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2021-11-06 09:46:30,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 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) [2021-11-06 09:46:30,088 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2021-11-06 09:46:30,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-06 09:46:30,089 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 09:46:30,090 INFO L513 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] [2021-11-06 09:46:30,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 09:46:30,093 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 09:46:30,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 09:46:30,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1816466470, now seen corresponding path program 1 times [2021-11-06 09:46:30,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 09:46:30,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952134194] [2021-11-06 09:46:30,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 09:46:30,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 09:46:30,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 09:46:30,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 09:46:30,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 09:46:30,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952134194] [2021-11-06 09:46:30,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952134194] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 09:46:30,545 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 09:46:30,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 09:46:30,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429870047] [2021-11-06 09:46:30,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 09:46:30,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 09:46:30,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 09:46:30,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 09:46:30,547 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-11-06 09:46:30,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 09:46:30,616 INFO L93 Difference]: Finished difference Result 88 states and 101 transitions. [2021-11-06 09:46:30,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 09:46:30,619 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2021-11-06 09:46:30,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 09:46:30,619 INFO L225 Difference]: With dead ends: 88 [2021-11-06 09:46:30,619 INFO L226 Difference]: Without dead ends: 74 [2021-11-06 09:46:30,620 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 09:46:30,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-06 09:46:30,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 63. [2021-11-06 09:46:30,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 62 states have internal predecessors, (73), 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) [2021-11-06 09:46:30,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2021-11-06 09:46:30,627 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 27 [2021-11-06 09:46:30,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 09:46:30,628 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2021-11-06 09:46:30,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-11-06 09:46:30,628 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2021-11-06 09:46:30,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-06 09:46:30,629 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 09:46:30,629 INFO L513 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] [2021-11-06 09:46:30,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 09:46:30,630 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 09:46:30,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 09:46:30,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1086636907, now seen corresponding path program 1 times [2021-11-06 09:46:30,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 09:46:30,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034680640] [2021-11-06 09:46:30,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 09:46:30,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 09:46:31,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 09:46:32,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 09:46:32,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 09:46:32,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034680640] [2021-11-06 09:46:32,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034680640] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 09:46:32,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 09:46:32,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 09:46:32,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314726107] [2021-11-06 09:46:32,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 09:46:32,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 09:46:32,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 09:46:32,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-11-06 09:46:32,243 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 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) [2021-11-06 09:46:34,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 09:46:34,823 INFO L93 Difference]: Finished difference Result 264 states and 311 transitions. [2021-11-06 09:46:34,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-06 09:46:34,824 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 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 29 [2021-11-06 09:46:34,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 09:46:34,827 INFO L225 Difference]: With dead ends: 264 [2021-11-06 09:46:34,827 INFO L226 Difference]: Without dead ends: 262 [2021-11-06 09:46:34,828 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2021-11-06 09:46:34,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-11-06 09:46:34,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 99. [2021-11-06 09:46:34,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 96 states have (on average 1.21875) internal successors, (117), 98 states have internal predecessors, (117), 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) [2021-11-06 09:46:34,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 117 transitions. [2021-11-06 09:46:34,856 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 117 transitions. Word has length 29 [2021-11-06 09:46:34,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 09:46:34,857 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 117 transitions. [2021-11-06 09:46:34,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 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) [2021-11-06 09:46:34,858 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 117 transitions. [2021-11-06 09:46:34,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-06 09:46:34,861 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 09:46:34,861 INFO L513 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] [2021-11-06 09:46:34,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 09:46:34,861 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 09:46:34,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 09:46:34,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1877136435, now seen corresponding path program 1 times [2021-11-06 09:46:34,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 09:46:34,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340491520] [2021-11-06 09:46:34,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 09:46:34,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 09:46:35,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 09:46:35,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 09:46:35,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 09:46:35,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340491520] [2021-11-06 09:46:35,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340491520] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 09:46:35,396 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 09:46:35,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 09:46:35,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669622672] [2021-11-06 09:46:35,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 09:46:35,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 09:46:35,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 09:46:35,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 09:46:35,397 INFO L87 Difference]: Start difference. First operand 99 states and 117 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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) [2021-11-06 09:46:35,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 09:46:35,731 INFO L93 Difference]: Finished difference Result 230 states and 268 transitions. [2021-11-06 09:46:35,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 09:46:35,731 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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 29 [2021-11-06 09:46:35,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 09:46:35,733 INFO L225 Difference]: With dead ends: 230 [2021-11-06 09:46:35,734 INFO L226 Difference]: Without dead ends: 221 [2021-11-06 09:46:35,734 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-06 09:46:35,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-11-06 09:46:35,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 160. [2021-11-06 09:46:35,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 157 states have (on average 1.2229299363057324) internal successors, (192), 159 states have internal predecessors, (192), 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) [2021-11-06 09:46:35,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 192 transitions. [2021-11-06 09:46:35,747 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 192 transitions. Word has length 29 [2021-11-06 09:46:35,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 09:46:35,750 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 192 transitions. [2021-11-06 09:46:35,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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) [2021-11-06 09:46:35,751 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 192 transitions. [2021-11-06 09:46:35,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-06 09:46:35,753 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 09:46:35,753 INFO L513 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] [2021-11-06 09:46:35,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 09:46:35,753 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 09:46:35,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 09:46:35,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1922058451, now seen corresponding path program 1 times [2021-11-06 09:46:35,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 09:46:35,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296195728] [2021-11-06 09:46:35,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 09:46:35,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 09:46:35,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 09:46:36,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 09:46:36,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 09:46:36,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296195728] [2021-11-06 09:46:36,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296195728] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 09:46:36,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 09:46:36,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 09:46:36,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67931347] [2021-11-06 09:46:36,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 09:46:36,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 09:46:36,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 09:46:36,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 09:46:36,220 INFO L87 Difference]: Start difference. First operand 160 states and 192 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 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) [2021-11-06 09:46:36,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 09:46:36,857 INFO L93 Difference]: Finished difference Result 218 states and 256 transitions. [2021-11-06 09:46:36,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-06 09:46:36,858 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 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 30 [2021-11-06 09:46:36,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 09:46:36,859 INFO L225 Difference]: With dead ends: 218 [2021-11-06 09:46:36,859 INFO L226 Difference]: Without dead ends: 177 [2021-11-06 09:46:36,859 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-11-06 09:46:36,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-11-06 09:46:36,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 165. [2021-11-06 09:46:36,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 162 states have (on average 1.2098765432098766) internal successors, (196), 164 states have internal predecessors, (196), 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) [2021-11-06 09:46:36,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 196 transitions. [2021-11-06 09:46:36,880 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 196 transitions. Word has length 30 [2021-11-06 09:46:36,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 09:46:36,880 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 196 transitions. [2021-11-06 09:46:36,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 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) [2021-11-06 09:46:36,880 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 196 transitions. [2021-11-06 09:46:36,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-06 09:46:36,881 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 09:46:36,881 INFO L513 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] [2021-11-06 09:46:36,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 09:46:36,881 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 09:46:36,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 09:46:36,882 INFO L85 PathProgramCache]: Analyzing trace with hash 656321838, now seen corresponding path program 1 times [2021-11-06 09:46:36,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 09:46:36,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940111157] [2021-11-06 09:46:36,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 09:46:36,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 09:46:37,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 09:46:37,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 09:46:37,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 09:46:37,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940111157] [2021-11-06 09:46:37,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940111157] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 09:46:37,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 09:46:37,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 09:46:37,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656570118] [2021-11-06 09:46:37,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 09:46:37,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 09:46:37,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 09:46:37,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-06 09:46:37,758 INFO L87 Difference]: Start difference. First operand 165 states and 196 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 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) [2021-11-06 09:46:39,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 09:46:39,862 INFO L93 Difference]: Finished difference Result 272 states and 313 transitions. [2021-11-06 09:46:39,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-06 09:46:39,863 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 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 [2021-11-06 09:46:39,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 09:46:39,864 INFO L225 Difference]: With dead ends: 272 [2021-11-06 09:46:39,864 INFO L226 Difference]: Without dead ends: 258 [2021-11-06 09:46:39,864 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870 [2021-11-06 09:46:39,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-11-06 09:46:39,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 207. [2021-11-06 09:46:39,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 204 states have (on average 1.2009803921568627) internal successors, (245), 206 states have internal predecessors, (245), 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) [2021-11-06 09:46:39,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 245 transitions. [2021-11-06 09:46:39,878 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 245 transitions. Word has length 32 [2021-11-06 09:46:39,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 09:46:39,878 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 245 transitions. [2021-11-06 09:46:39,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 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) [2021-11-06 09:46:39,878 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 245 transitions. [2021-11-06 09:46:39,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-06 09:46:39,878 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 09:46:39,879 INFO L513 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] [2021-11-06 09:46:39,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 09:46:39,879 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 09:46:39,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 09:46:39,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1112605294, now seen corresponding path program 1 times [2021-11-06 09:46:39,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 09:46:39,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135898266] [2021-11-06 09:46:39,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 09:46:39,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 09:46:40,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 09:46:40,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 09:46:40,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 09:46:40,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135898266] [2021-11-06 09:46:40,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135898266] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 09:46:40,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 09:46:40,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 09:46:40,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357314218] [2021-11-06 09:46:40,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 09:46:40,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 09:46:40,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 09:46:40,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 09:46:40,251 INFO L87 Difference]: Start difference. First operand 207 states and 245 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 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) [2021-11-06 09:46:40,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 09:46:40,388 INFO L93 Difference]: Finished difference Result 229 states and 268 transitions. [2021-11-06 09:46:40,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 09:46:40,388 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 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 33 [2021-11-06 09:46:40,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 09:46:40,389 INFO L225 Difference]: With dead ends: 229 [2021-11-06 09:46:40,389 INFO L226 Difference]: Without dead ends: 224 [2021-11-06 09:46:40,390 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 09:46:40,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-11-06 09:46:40,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 213. [2021-11-06 09:46:40,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 210 states have (on average 1.1952380952380952) internal successors, (251), 212 states have internal predecessors, (251), 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) [2021-11-06 09:46:40,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 251 transitions. [2021-11-06 09:46:40,402 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 251 transitions. Word has length 33 [2021-11-06 09:46:40,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 09:46:40,403 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 251 transitions. [2021-11-06 09:46:40,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 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) [2021-11-06 09:46:40,403 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 251 transitions. [2021-11-06 09:46:40,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-06 09:46:40,404 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 09:46:40,405 INFO L513 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] [2021-11-06 09:46:40,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 09:46:40,405 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 09:46:40,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 09:46:40,405 INFO L85 PathProgramCache]: Analyzing trace with hash -624278052, now seen corresponding path program 1 times [2021-11-06 09:46:40,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 09:46:40,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443082238] [2021-11-06 09:46:40,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 09:46:40,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 09:46:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 09:46:40,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 09:46:40,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 09:46:40,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443082238] [2021-11-06 09:46:40,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443082238] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 09:46:40,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 09:46:40,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 09:46:40,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879047735] [2021-11-06 09:46:40,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 09:46:40,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 09:46:40,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 09:46:40,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-06 09:46:40,725 INFO L87 Difference]: Start difference. First operand 213 states and 251 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 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) [2021-11-06 09:46:41,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 09:46:41,302 INFO L93 Difference]: Finished difference Result 255 states and 295 transitions. [2021-11-06 09:46:41,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-06 09:46:41,303 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 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 34 [2021-11-06 09:46:41,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 09:46:41,304 INFO L225 Difference]: With dead ends: 255 [2021-11-06 09:46:41,304 INFO L226 Difference]: Without dead ends: 225 [2021-11-06 09:46:41,304 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2021-11-06 09:46:41,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-11-06 09:46:41,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 213. [2021-11-06 09:46:41,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 210 states have (on average 1.1904761904761905) internal successors, (250), 212 states have internal predecessors, (250), 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) [2021-11-06 09:46:41,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 250 transitions. [2021-11-06 09:46:41,311 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 250 transitions. Word has length 34 [2021-11-06 09:46:41,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 09:46:41,311 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 250 transitions. [2021-11-06 09:46:41,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 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) [2021-11-06 09:46:41,311 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 250 transitions. [2021-11-06 09:46:41,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-06 09:46:41,313 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 09:46:41,313 INFO L513 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] [2021-11-06 09:46:41,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 09:46:41,314 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 09:46:41,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 09:46:41,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1261304773, now seen corresponding path program 1 times [2021-11-06 09:46:41,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 09:46:41,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237507177] [2021-11-06 09:46:41,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 09:46:41,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 09:46:41,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 09:46:42,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 09:46:42,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 09:46:42,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237507177] [2021-11-06 09:46:42,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237507177] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 09:46:42,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 09:46:42,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 09:46:42,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061232611] [2021-11-06 09:46:42,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 09:46:42,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 09:46:42,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 09:46:42,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-06 09:46:42,126 INFO L87 Difference]: Start difference. First operand 213 states and 250 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 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) [2021-11-06 09:46:44,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 09:46:44,929 INFO L93 Difference]: Finished difference Result 277 states and 308 transitions. [2021-11-06 09:46:44,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-06 09:46:44,930 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 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 35 [2021-11-06 09:46:44,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 09:46:44,931 INFO L225 Difference]: With dead ends: 277 [2021-11-06 09:46:44,931 INFO L226 Difference]: Without dead ends: 248 [2021-11-06 09:46:44,933 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=273, Invalid=783, Unknown=0, NotChecked=0, Total=1056 [2021-11-06 09:46:44,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-11-06 09:46:44,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 213. [2021-11-06 09:46:44,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 210 states have (on average 1.1857142857142857) internal successors, (249), 212 states have internal predecessors, (249), 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) [2021-11-06 09:46:44,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 249 transitions. [2021-11-06 09:46:44,955 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 249 transitions. Word has length 35 [2021-11-06 09:46:44,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 09:46:44,956 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 249 transitions. [2021-11-06 09:46:44,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 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) [2021-11-06 09:46:44,956 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 249 transitions. [2021-11-06 09:46:44,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-06 09:46:44,956 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 09:46:44,956 INFO L513 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] [2021-11-06 09:46:44,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 09:46:44,957 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 09:46:44,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 09:46:44,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1812640806, now seen corresponding path program 1 times [2021-11-06 09:46:44,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 09:46:44,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231376461] [2021-11-06 09:46:44,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 09:46:44,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 09:46:46,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 09:46:47,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 09:46:47,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 09:46:47,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231376461] [2021-11-06 09:46:47,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231376461] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 09:46:47,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 09:46:47,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 09:46:47,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695924224] [2021-11-06 09:46:47,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 09:46:47,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 09:46:47,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 09:46:47,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-06 09:46:47,192 INFO L87 Difference]: Start difference. First operand 213 states and 249 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 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) [2021-11-06 09:46:47,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 09:46:47,522 INFO L93 Difference]: Finished difference Result 236 states and 270 transitions. [2021-11-06 09:46:47,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 09:46:47,523 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 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 [2021-11-06 09:46:47,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 09:46:47,524 INFO L225 Difference]: With dead ends: 236 [2021-11-06 09:46:47,524 INFO L226 Difference]: Without dead ends: 223 [2021-11-06 09:46:47,524 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-06 09:46:47,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-11-06 09:46:47,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 213. [2021-11-06 09:46:47,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 210 states have (on average 1.180952380952381) internal successors, (248), 212 states have internal predecessors, (248), 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) [2021-11-06 09:46:47,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 248 transitions. [2021-11-06 09:46:47,533 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 248 transitions. Word has length 38 [2021-11-06 09:46:47,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 09:46:47,533 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 248 transitions. [2021-11-06 09:46:47,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 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) [2021-11-06 09:46:47,533 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 248 transitions. [2021-11-06 09:46:47,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-06 09:46:47,535 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 09:46:47,535 INFO L513 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] [2021-11-06 09:46:47,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 09:46:47,535 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 09:46:47,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 09:46:47,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1565375815, now seen corresponding path program 1 times [2021-11-06 09:46:47,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 09:46:47,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320400784] [2021-11-06 09:46:47,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 09:46:47,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 09:46:47,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 09:46:49,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 09:46:49,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 09:46:49,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320400784] [2021-11-06 09:46:49,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320400784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 09:46:49,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 09:46:49,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-06 09:46:49,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173892984] [2021-11-06 09:46:49,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-06 09:46:49,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 09:46:49,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-06 09:46:49,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-11-06 09:46:49,406 INFO L87 Difference]: Start difference. First operand 213 states and 248 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 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) [2021-11-06 09:46:54,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 09:46:54,140 INFO L93 Difference]: Finished difference Result 231 states and 260 transitions. [2021-11-06 09:46:54,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-06 09:46:54,141 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 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 [2021-11-06 09:46:54,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 09:46:54,144 INFO L225 Difference]: With dead ends: 231 [2021-11-06 09:46:54,144 INFO L226 Difference]: Without dead ends: 208 [2021-11-06 09:46:54,145 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=310, Invalid=880, Unknown=0, NotChecked=0, Total=1190 [2021-11-06 09:46:54,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-11-06 09:46:54,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 192. [2021-11-06 09:46:54,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 189 states have (on average 1.1851851851851851) internal successors, (224), 191 states have internal predecessors, (224), 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) [2021-11-06 09:46:54,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 224 transitions. [2021-11-06 09:46:54,150 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 224 transitions. Word has length 38 [2021-11-06 09:46:54,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 09:46:54,151 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 224 transitions. [2021-11-06 09:46:54,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 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) [2021-11-06 09:46:54,151 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 224 transitions. [2021-11-06 09:46:54,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-06 09:46:54,151 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 09:46:54,151 INFO L513 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] [2021-11-06 09:46:54,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 09:46:54,151 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 09:46:54,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 09:46:54,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1243884861, now seen corresponding path program 1 times [2021-11-06 09:46:54,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 09:46:54,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312925913] [2021-11-06 09:46:54,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 09:46:54,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 09:46:54,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 09:46:55,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 09:46:55,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 09:46:55,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312925913] [2021-11-06 09:46:55,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312925913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 09:46:55,406 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 09:46:55,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 09:46:55,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365422969] [2021-11-06 09:46:55,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 09:46:55,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 09:46:55,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 09:46:55,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-06 09:46:55,409 INFO L87 Difference]: Start difference. First operand 192 states and 224 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 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) [2021-11-06 09:46:58,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 09:46:58,748 INFO L93 Difference]: Finished difference Result 259 states and 294 transitions. [2021-11-06 09:46:58,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-06 09:46:58,749 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 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 [2021-11-06 09:46:58,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 09:46:58,749 INFO L225 Difference]: With dead ends: 259 [2021-11-06 09:46:58,749 INFO L226 Difference]: Without dead ends: 232 [2021-11-06 09:46:58,750 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2021-11-06 09:46:58,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-11-06 09:46:58,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 194. [2021-11-06 09:46:58,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 191 states have (on average 1.1832460732984293) internal successors, (226), 193 states have internal predecessors, (226), 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) [2021-11-06 09:46:58,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 226 transitions. [2021-11-06 09:46:58,756 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 226 transitions. Word has length 38 [2021-11-06 09:46:58,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 09:46:58,756 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 226 transitions. [2021-11-06 09:46:58,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 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) [2021-11-06 09:46:58,756 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 226 transitions. [2021-11-06 09:46:58,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-06 09:46:58,756 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 09:46:58,757 INFO L513 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] [2021-11-06 09:46:58,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 09:46:58,757 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 09:46:58,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 09:46:58,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1604639621, now seen corresponding path program 1 times [2021-11-06 09:46:58,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 09:46:58,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114290910] [2021-11-06 09:46:58,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 09:46:58,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 09:46:58,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 09:46:59,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 09:46:59,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 09:46:59,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114290910] [2021-11-06 09:46:59,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114290910] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 09:46:59,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 09:46:59,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 09:46:59,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875184876] [2021-11-06 09:46:59,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 09:46:59,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 09:46:59,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 09:46:59,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-06 09:46:59,495 INFO L87 Difference]: Start difference. First operand 194 states and 226 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:47:01,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 09:47:01,053 INFO L93 Difference]: Finished difference Result 279 states and 323 transitions. [2021-11-06 09:47:01,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-06 09:47:01,058 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-06 09:47:01,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 09:47:01,059 INFO L225 Difference]: With dead ends: 279 [2021-11-06 09:47:01,059 INFO L226 Difference]: Without dead ends: 266 [2021-11-06 09:47:01,059 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2021-11-06 09:47:01,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-11-06 09:47:01,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 220. [2021-11-06 09:47:01,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 217 states have (on average 1.1658986175115207) internal successors, (253), 219 states have internal predecessors, (253), 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) [2021-11-06 09:47:01,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 253 transitions. [2021-11-06 09:47:01,067 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 253 transitions. Word has length 39 [2021-11-06 09:47:01,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 09:47:01,067 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 253 transitions. [2021-11-06 09:47:01,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 09:47:01,068 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 253 transitions. [2021-11-06 09:47:01,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-06 09:47:01,068 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 09:47:01,068 INFO L513 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, 1] [2021-11-06 09:47:01,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 09:47:01,068 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 09:47:01,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 09:47:01,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1876182655, now seen corresponding path program 1 times [2021-11-06 09:47:01,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 09:47:01,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652117333] [2021-11-06 09:47:01,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 09:47:01,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 09:47:17,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 09:47:56,511 WARN L207 SmtUtils]: Spent 9.96 s on a formula simplification that was a NOOP. DAG size: 172 [2021-11-06 09:48:40,707 WARN L207 SmtUtils]: Spent 6.76 s on a formula simplification that was a NOOP. DAG size: 170 [2021-11-06 09:52:21,410 WARN L207 SmtUtils]: Spent 1.79 m on a formula simplification. DAG size of input: 326 DAG size of output: 314 [2021-11-06 09:53:00,502 WARN L207 SmtUtils]: Spent 9.17 s on a formula simplification that was a NOOP. DAG size: 163 [2021-11-06 09:53:36,579 WARN L207 SmtUtils]: Spent 6.83 s on a formula simplification that was a NOOP. DAG size: 163 [2021-11-06 09:54:32,665 WARN L207 SmtUtils]: Spent 17.31 s on a formula simplification that was a NOOP. DAG size: 163 [2021-11-06 09:54:46,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 09:54:46,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 09:54:46,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652117333] [2021-11-06 09:54:46,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652117333] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 09:54:46,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 09:54:46,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-06 09:54:46,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150027999] [2021-11-06 09:54:46,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-06 09:54:46,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 09:54:46,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-06 09:54:46,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=394, Unknown=6, NotChecked=0, Total=462 [2021-11-06 09:54:46,726 INFO L87 Difference]: Start difference. First operand 220 states and 253 transitions. Second operand has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 21 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) [2021-11-06 09:55:28,134 WARN L207 SmtUtils]: Spent 8.94 s on a formula simplification. DAG size of input: 249 DAG size of output: 76 [2021-11-06 09:57:45,719 WARN L207 SmtUtils]: Spent 1.78 m on a formula simplification. DAG size of input: 355 DAG size of output: 355 Killed by 15