./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 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_byte_buf_append_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 aad159acc9cbece9fe1ce64619aff83e5e3477bbd84af6f399f8d36d8b5384a2 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 12:14:52,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 12:14:52,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 12:14:52,800 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 12:14:52,800 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 12:14:52,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 12:14:52,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 12:14:52,810 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 12:14:52,812 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 12:14:52,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 12:14:52,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 12:14:52,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 12:14:52,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 12:14:52,832 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 12:14:52,834 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 12:14:52,837 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 12:14:52,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 12:14:52,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 12:14:52,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 12:14:52,846 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 12:14:52,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 12:14:52,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 12:14:52,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 12:14:52,851 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 12:14:52,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 12:14:52,856 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 12:14:52,857 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 12:14:52,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 12:14:52,859 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 12:14:52,859 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 12:14:52,860 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 12:14:52,860 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 12:14:52,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 12:14:52,862 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 12:14:52,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 12:14:52,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 12:14:52,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 12:14:52,865 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 12:14:52,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 12:14:52,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 12:14:52,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 12:14:52,872 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 12:14:52,907 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 12:14:52,907 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 12:14:52,908 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 12:14:52,908 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 12:14:52,910 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 12:14:52,910 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 12:14:52,910 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 12:14:52,911 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 12:14:52,911 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 12:14:52,911 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 12:14:52,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 12:14:52,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 12:14:52,912 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 12:14:52,912 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 12:14:52,912 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 12:14:52,913 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 12:14:52,913 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 12:14:52,913 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 12:14:52,913 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 12:14:52,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 12:14:52,914 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 12:14:52,914 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 12:14:52,914 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 12:14:52,914 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 12:14:52,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 12:14:52,915 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 12:14:52,915 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 12:14:52,915 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 12:14:52,915 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 12:14:52,915 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aad159acc9cbece9fe1ce64619aff83e5e3477bbd84af6f399f8d36d8b5384a2 [2021-11-05 12:14:53,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 12:14:53,240 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 12:14:53,242 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 12:14:53,243 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 12:14:53,244 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 12:14:53,244 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2021-11-05 12:14:53,297 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f45e5d951/a6deecfc9b4b49f3ac1e8176fd26d3bd/FLAG07137bb73 [2021-11-05 12:14:54,072 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 12:14:54,073 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2021-11-05 12:14:54,103 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f45e5d951/a6deecfc9b4b49f3ac1e8176fd26d3bd/FLAG07137bb73 [2021-11-05 12:14:54,302 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f45e5d951/a6deecfc9b4b49f3ac1e8176fd26d3bd [2021-11-05 12:14:54,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 12:14:54,306 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 12:14:54,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 12:14:54,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 12:14:54,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 12:14:54,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 12:14:54" (1/1) ... [2021-11-05 12:14:54,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45946974 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:14:54, skipping insertion in model container [2021-11-05 12:14:54,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 12:14:54" (1/1) ... [2021-11-05 12:14:54,326 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 12:14:54,434 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 12:14:54,671 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_byte_buf_append_harness.i[4493,4506] [2021-11-05 12:14:54,678 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_byte_buf_append_harness.i[4553,4566] [2021-11-05 12:14:54,698 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 12:14:54,704 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 12:14:55,294 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:14:55,299 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:14:55,300 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:14:55,302 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:14:55,303 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:14:55,313 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:14:55,313 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:14:55,314 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:14:55,315 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:14:55,569 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 12:14:55,571 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 12:14:55,571 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 12:14:55,572 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 12:14:55,574 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 12:14:55,575 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 12:14:55,576 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 12:14:55,576 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 12:14:55,577 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 12:14:55,578 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 12:14:55,678 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 12:14:55,766 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:14:55,767 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:14:55,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 12:14:55,893 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 12:14:55,915 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_byte_buf_append_harness.i[4493,4506] [2021-11-05 12:14:55,916 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_byte_buf_append_harness.i[4553,4566] [2021-11-05 12:14:55,918 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 12:14:55,919 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 12:14:55,962 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:14:55,963 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:14:55,963 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:14:55,964 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:14:55,965 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:14:55,975 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:14:55,976 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:14:55,977 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:14:55,977 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:14:56,035 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 12:14:56,035 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 12:14:56,036 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 12:14:56,039 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 12:14:56,039 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 12:14:56,040 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 12:14:56,040 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 12:14:56,040 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 12:14:56,041 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 12:14:56,045 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 12:14:56,063 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 12:14:56,120 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:14:56,121 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:14:56,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 12:14:56,501 INFO L208 MainTranslator]: Completed translation [2021-11-05 12:14:56,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:14:56 WrapperNode [2021-11-05 12:14:56,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 12:14:56,503 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 12:14:56,503 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 12:14:56,503 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 12:14:56,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:14:56" (1/1) ... [2021-11-05 12:14:56,611 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:14:56" (1/1) ... [2021-11-05 12:14:56,735 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 12:14:56,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 12:14:56,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 12:14:56,737 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 12:14:56,744 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:14:56" (1/1) ... [2021-11-05 12:14:56,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:14:56" (1/1) ... [2021-11-05 12:14:56,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:14:56" (1/1) ... [2021-11-05 12:14:56,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:14:56" (1/1) ... [2021-11-05 12:14:56,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:14:56" (1/1) ... [2021-11-05 12:14:56,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:14:56" (1/1) ... [2021-11-05 12:14:56,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:14:56" (1/1) ... [2021-11-05 12:14:56,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 12:14:56,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 12:14:56,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 12:14:56,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 12:14:56,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:14:56" (1/1) ... [2021-11-05 12:14:56,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 12:14:56,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:14:56,900 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) [2021-11-05 12:14:56,913 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 [2021-11-05 12:14:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 12:14:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 12:14:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 12:14:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 12:14:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 12:14:56,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 12:14:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 12:14:56,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 12:14:56,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 12:14:56,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 12:14:56,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 12:15:06,079 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 12:15:06,080 INFO L299 CfgBuilder]: Removed 123 assume(true) statements. [2021-11-05 12:15:06,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 12:15:06 BoogieIcfgContainer [2021-11-05 12:15:06,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 12:15:06,083 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 12:15:06,084 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 12:15:06,086 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 12:15:06,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 12:14:54" (1/3) ... [2021-11-05 12:15:06,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f13f679 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 12:15:06, skipping insertion in model container [2021-11-05 12:15:06,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:14:56" (2/3) ... [2021-11-05 12:15:06,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f13f679 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 12:15:06, skipping insertion in model container [2021-11-05 12:15:06,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 12:15:06" (3/3) ... [2021-11-05 12:15:06,089 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_harness.i [2021-11-05 12:15:06,093 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 12:15:06,093 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2021-11-05 12:15:06,132 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 12:15:06,138 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 [2021-11-05 12:15:06,138 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-11-05 12:15:06,161 INFO L276 IsEmpty]: Start isEmpty. Operand has 260 states, 242 states have (on average 1.4793388429752066) internal successors, (358), 259 states have internal predecessors, (358), 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) [2021-11-05 12:15:06,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-05 12:15:06,170 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:15:06,170 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:15:06,171 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:15:06,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:15:06,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1026196011, now seen corresponding path program 1 times [2021-11-05 12:15:06,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:15:06,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249043469] [2021-11-05 12:15:06,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:15:06,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:15:06,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:15:06,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:15:06,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:15:06,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249043469] [2021-11-05 12:15:06,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249043469] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:15:06,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:15:06,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 12:15:06,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676034799] [2021-11-05 12:15:06,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:15:06,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 12:15:06,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:15:06,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 12:15:06,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 12:15:06,864 INFO L87 Difference]: Start difference. First operand has 260 states, 242 states have (on average 1.4793388429752066) internal successors, (358), 259 states have internal predecessors, (358), 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 21.5) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:15:06,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:15:06,901 INFO L93 Difference]: Finished difference Result 516 states and 711 transitions. [2021-11-05 12:15:06,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 12:15:06,904 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-05 12:15:06,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:15:06,912 INFO L225 Difference]: With dead ends: 516 [2021-11-05 12:15:06,914 INFO L226 Difference]: Without dead ends: 255 [2021-11-05 12:15:06,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 12:15:06,928 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.95ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 12:15:06,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 2.95ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 12:15:06,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-11-05 12:15:06,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2021-11-05 12:15:06,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 238 states have (on average 1.3529411764705883) internal successors, (322), 254 states have internal predecessors, (322), 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) [2021-11-05 12:15:06,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 322 transitions. [2021-11-05 12:15:06,987 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 322 transitions. Word has length 43 [2021-11-05 12:15:06,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:15:06,988 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 322 transitions. [2021-11-05 12:15:06,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:15:06,989 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 322 transitions. [2021-11-05 12:15:06,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-05 12:15:06,994 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:15:06,994 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:15:06,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 12:15:06,995 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:15:06,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:15:06,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1821286743, now seen corresponding path program 1 times [2021-11-05 12:15:06,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:15:06,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594785726] [2021-11-05 12:15:06,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:15:06,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:15:07,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:15:07,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:15:07,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:15:07,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594785726] [2021-11-05 12:15:07,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594785726] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:15:07,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:15:07,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:15:07,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431766269] [2021-11-05 12:15:07,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:15:07,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:15:07,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:15:07,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:15:07,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:15:07,371 INFO L87 Difference]: Start difference. First operand 255 states and 322 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:15:07,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:15:07,568 INFO L93 Difference]: Finished difference Result 484 states and 610 transitions. [2021-11-05 12:15:07,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 12:15:07,569 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 43 [2021-11-05 12:15:07,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:15:07,572 INFO L225 Difference]: With dead ends: 484 [2021-11-05 12:15:07,572 INFO L226 Difference]: Without dead ends: 255 [2021-11-05 12:15:07,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.66ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:15:07,574 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 304 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 140.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.26ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 166.30ms IncrementalHoareTripleChecker+Time [2021-11-05 12:15:07,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 511 Invalid, 41 Unknown, 0 Unchecked, 5.26ms Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 166.30ms Time] [2021-11-05 12:15:07,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-11-05 12:15:07,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2021-11-05 12:15:07,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 238 states have (on average 1.3403361344537814) internal successors, (319), 254 states have internal predecessors, (319), 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) [2021-11-05 12:15:07,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 319 transitions. [2021-11-05 12:15:07,591 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 319 transitions. Word has length 43 [2021-11-05 12:15:07,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:15:07,591 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 319 transitions. [2021-11-05 12:15:07,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:15:07,592 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 319 transitions. [2021-11-05 12:15:07,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-05 12:15:07,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:15:07,593 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:15:07,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 12:15:07,594 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:15:07,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:15:07,595 INFO L85 PathProgramCache]: Analyzing trace with hash 704440679, now seen corresponding path program 1 times [2021-11-05 12:15:07,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:15:07,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621479514] [2021-11-05 12:15:07,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:15:07,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:15:07,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:15:07,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:15:07,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:15:07,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621479514] [2021-11-05 12:15:07,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621479514] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:15:07,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:15:07,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:15:07,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023416444] [2021-11-05 12:15:07,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:15:07,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:15:07,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:15:07,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:15:07,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:15:07,930 INFO L87 Difference]: Start difference. First operand 255 states and 319 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:15:08,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:15:08,290 INFO L93 Difference]: Finished difference Result 535 states and 676 transitions. [2021-11-05 12:15:08,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:15:08,291 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-05 12:15:08,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:15:08,293 INFO L225 Difference]: With dead ends: 535 [2021-11-05 12:15:08,293 INFO L226 Difference]: Without dead ends: 305 [2021-11-05 12:15:08,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.03ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:15:08,300 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 109 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 289.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.03ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 317.54ms IncrementalHoareTripleChecker+Time [2021-11-05 12:15:08,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 896 Invalid, 101 Unknown, 0 Unchecked, 4.03ms Time], IncrementalHoareTripleChecker [17 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 317.54ms Time] [2021-11-05 12:15:08,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-11-05 12:15:08,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 265. [2021-11-05 12:15:08,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 248 states have (on average 1.3266129032258065) internal successors, (329), 264 states have internal predecessors, (329), 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) [2021-11-05 12:15:08,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 329 transitions. [2021-11-05 12:15:08,317 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 329 transitions. Word has length 55 [2021-11-05 12:15:08,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:15:08,318 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 329 transitions. [2021-11-05 12:15:08,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:15:08,318 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 329 transitions. [2021-11-05 12:15:08,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-05 12:15:08,320 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:15:08,320 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:15:08,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 12:15:08,320 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:15:08,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:15:08,321 INFO L85 PathProgramCache]: Analyzing trace with hash 2076247977, now seen corresponding path program 1 times [2021-11-05 12:15:08,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:15:08,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719463771] [2021-11-05 12:15:08,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:15:08,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:15:08,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:15:08,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:15:08,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:15:08,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719463771] [2021-11-05 12:15:08,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719463771] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:15:08,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:15:08,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:15:08,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205836411] [2021-11-05 12:15:08,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:15:08,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:15:08,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:15:08,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:15:08,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:15:08,611 INFO L87 Difference]: Start difference. First operand 265 states and 329 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:15:08,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:15:08,748 INFO L93 Difference]: Finished difference Result 479 states and 594 transitions. [2021-11-05 12:15:08,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 12:15:08,749 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-05 12:15:08,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:15:08,750 INFO L225 Difference]: With dead ends: 479 [2021-11-05 12:15:08,751 INFO L226 Difference]: Without dead ends: 265 [2021-11-05 12:15:08,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.51ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:15:08,752 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 331 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 112.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.86ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 124.02ms IncrementalHoareTripleChecker+Time [2021-11-05 12:15:08,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 540 Invalid, 37 Unknown, 0 Unchecked, 1.86ms Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 124.02ms Time] [2021-11-05 12:15:08,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-11-05 12:15:08,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2021-11-05 12:15:08,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 248 states have (on average 1.3185483870967742) internal successors, (327), 264 states have internal predecessors, (327), 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) [2021-11-05 12:15:08,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 327 transitions. [2021-11-05 12:15:08,780 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 327 transitions. Word has length 55 [2021-11-05 12:15:08,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:15:08,781 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 327 transitions. [2021-11-05 12:15:08,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:15:08,782 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 327 transitions. [2021-11-05 12:15:08,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-05 12:15:08,787 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:15:08,787 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:15:08,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 12:15:08,788 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:15:08,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:15:08,788 INFO L85 PathProgramCache]: Analyzing trace with hash 496870244, now seen corresponding path program 1 times [2021-11-05 12:15:08,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:15:08,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703103119] [2021-11-05 12:15:08,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:15:08,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:15:08,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:15:09,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:15:09,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:15:09,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703103119] [2021-11-05 12:15:09,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703103119] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:15:09,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:15:09,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 12:15:09,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774320052] [2021-11-05 12:15:09,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:15:09,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 12:15:09,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:15:09,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 12:15:09,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:15:09,171 INFO L87 Difference]: Start difference. First operand 265 states and 327 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:15:09,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:15:09,495 INFO L93 Difference]: Finished difference Result 447 states and 548 transitions. [2021-11-05 12:15:09,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:15:09,496 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-05 12:15:09,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:15:09,497 INFO L225 Difference]: With dead ends: 447 [2021-11-05 12:15:09,498 INFO L226 Difference]: Without dead ends: 265 [2021-11-05 12:15:09,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 225.01ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:15:09,499 INFO L933 BasicCegarLoop]: 294 mSDtfsCounter, 846 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 165.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.64ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 187.21ms IncrementalHoareTripleChecker+Time [2021-11-05 12:15:09,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [846 Valid, 689 Invalid, 54 Unknown, 0 Unchecked, 3.64ms Time], IncrementalHoareTripleChecker [8 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 187.21ms Time] [2021-11-05 12:15:09,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-11-05 12:15:09,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2021-11-05 12:15:09,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 248 states have (on average 1.3064516129032258) internal successors, (324), 264 states have internal predecessors, (324), 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) [2021-11-05 12:15:09,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 324 transitions. [2021-11-05 12:15:09,509 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 324 transitions. Word has length 57 [2021-11-05 12:15:09,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:15:09,509 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 324 transitions. [2021-11-05 12:15:09,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:15:09,509 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 324 transitions. [2021-11-05 12:15:09,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-05 12:15:09,511 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:15:09,511 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:15:09,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 12:15:09,511 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:15:09,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:15:09,512 INFO L85 PathProgramCache]: Analyzing trace with hash 2087499103, now seen corresponding path program 1 times [2021-11-05 12:15:09,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:15:09,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647271567] [2021-11-05 12:15:09,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:15:09,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:15:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:15:10,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:15:10,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:15:10,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647271567] [2021-11-05 12:15:10,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647271567] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:15:10,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:15:10,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 12:15:10,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318114569] [2021-11-05 12:15:10,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:15:10,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 12:15:10,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:15:10,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 12:15:10,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:15:10,700 INFO L87 Difference]: Start difference. First operand 265 states and 324 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:15:12,766 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:15:14,889 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:15:16,976 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:15:18,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:15:18,803 INFO L93 Difference]: Finished difference Result 629 states and 758 transitions. [2021-11-05 12:15:18,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 12:15:18,804 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-05 12:15:18,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:15:18,806 INFO L225 Difference]: With dead ends: 629 [2021-11-05 12:15:18,806 INFO L226 Difference]: Without dead ends: 453 [2021-11-05 12:15:18,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 465.38ms TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-11-05 12:15:18,808 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 805 mSDsluCounter, 1165 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 16 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7302.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.92ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7754.83ms IncrementalHoareTripleChecker+Time [2021-11-05 12:15:18,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [805 Valid, 1431 Invalid, 384 Unknown, 0 Unchecked, 10.92ms Time], IncrementalHoareTripleChecker [16 Valid, 365 Invalid, 3 Unknown, 0 Unchecked, 7754.83ms Time] [2021-11-05 12:15:18,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2021-11-05 12:15:18,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 304. [2021-11-05 12:15:18,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 287 states have (on average 1.2996515679442509) internal successors, (373), 303 states have internal predecessors, (373), 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) [2021-11-05 12:15:18,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 373 transitions. [2021-11-05 12:15:18,823 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 373 transitions. Word has length 59 [2021-11-05 12:15:18,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:15:18,823 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 373 transitions. [2021-11-05 12:15:18,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:15:18,824 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 373 transitions. [2021-11-05 12:15:18,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-05 12:15:18,829 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:15:18,829 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:15:18,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 12:15:18,830 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:15:18,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:15:18,830 INFO L85 PathProgramCache]: Analyzing trace with hash -165160809, now seen corresponding path program 1 times [2021-11-05 12:15:18,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:15:18,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081669043] [2021-11-05 12:15:18,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:15:18,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:15:19,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:15:19,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:15:19,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:15:19,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081669043] [2021-11-05 12:15:19,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081669043] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:15:19,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:15:19,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 12:15:19,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267982014] [2021-11-05 12:15:19,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:15:19,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 12:15:19,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:15:19,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 12:15:19,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:15:19,869 INFO L87 Difference]: Start difference. First operand 304 states and 373 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 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) [2021-11-05 12:15:21,927 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:15:24,059 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:15:26,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:15:26,365 INFO L93 Difference]: Finished difference Result 644 states and 774 transitions. [2021-11-05 12:15:26,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 12:15:26,366 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 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 63 [2021-11-05 12:15:26,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:15:26,368 INFO L225 Difference]: With dead ends: 644 [2021-11-05 12:15:26,369 INFO L226 Difference]: Without dead ends: 461 [2021-11-05 12:15:26,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 551.41ms TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-11-05 12:15:26,370 INFO L933 BasicCegarLoop]: 443 mSDtfsCounter, 832 mSDsluCounter, 1626 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 29 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5783.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 2069 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.04ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6126.39ms IncrementalHoareTripleChecker+Time [2021-11-05 12:15:26,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [832 Valid, 2069 Invalid, 597 Unknown, 0 Unchecked, 12.04ms Time], IncrementalHoareTripleChecker [29 Valid, 566 Invalid, 2 Unknown, 0 Unchecked, 6126.39ms Time] [2021-11-05 12:15:26,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-11-05 12:15:26,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 373. [2021-11-05 12:15:26,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 356 states have (on average 1.3061797752808988) internal successors, (465), 372 states have internal predecessors, (465), 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) [2021-11-05 12:15:26,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 465 transitions. [2021-11-05 12:15:26,383 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 465 transitions. Word has length 63 [2021-11-05 12:15:26,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:15:26,383 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 465 transitions. [2021-11-05 12:15:26,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 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) [2021-11-05 12:15:26,384 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 465 transitions. [2021-11-05 12:15:26,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-05 12:15:26,384 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:15:26,385 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:15:26,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 12:15:26,385 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:15:26,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:15:26,386 INFO L85 PathProgramCache]: Analyzing trace with hash -51426837, now seen corresponding path program 1 times [2021-11-05 12:15:26,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:15:26,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682485321] [2021-11-05 12:15:26,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:15:26,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:15:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:15:26,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:15:26,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:15:26,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682485321] [2021-11-05 12:15:26,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682485321] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:15:26,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:15:26,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 12:15:26,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690299426] [2021-11-05 12:15:26,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:15:26,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 12:15:26,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:15:26,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 12:15:26,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:15:26,772 INFO L87 Difference]: Start difference. First operand 373 states and 465 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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) [2021-11-05 12:15:27,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:15:27,097 INFO L93 Difference]: Finished difference Result 552 states and 681 transitions. [2021-11-05 12:15:27,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:15:27,098 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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 63 [2021-11-05 12:15:27,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:15:27,099 INFO L225 Difference]: With dead ends: 552 [2021-11-05 12:15:27,100 INFO L226 Difference]: Without dead ends: 373 [2021-11-05 12:15:27,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 241.01ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:15:27,101 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 1204 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 161.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1204 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.76ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 175.91ms IncrementalHoareTripleChecker+Time [2021-11-05 12:15:27,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1204 Valid, 547 Invalid, 58 Unknown, 0 Unchecked, 1.76ms Time], IncrementalHoareTripleChecker [12 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 175.91ms Time] [2021-11-05 12:15:27,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2021-11-05 12:15:27,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2021-11-05 12:15:27,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 356 states have (on average 1.297752808988764) internal successors, (462), 372 states have internal predecessors, (462), 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) [2021-11-05 12:15:27,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 462 transitions. [2021-11-05 12:15:27,115 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 462 transitions. Word has length 63 [2021-11-05 12:15:27,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:15:27,116 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 462 transitions. [2021-11-05 12:15:27,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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) [2021-11-05 12:15:27,116 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 462 transitions. [2021-11-05 12:15:27,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-05 12:15:27,117 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:15:27,118 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:15:27,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 12:15:27,118 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:15:27,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:15:27,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1088523855, now seen corresponding path program 1 times [2021-11-05 12:15:27,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:15:27,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984864850] [2021-11-05 12:15:27,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:15:27,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:15:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:15:28,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:15:28,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:15:28,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984864850] [2021-11-05 12:15:28,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984864850] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:15:28,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:15:28,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 12:15:28,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917262874] [2021-11-05 12:15:28,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:15:28,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 12:15:28,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:15:28,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 12:15:28,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:15:28,087 INFO L87 Difference]: Start difference. First operand 373 states and 462 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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) [2021-11-05 12:15:28,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:15:28,862 INFO L93 Difference]: Finished difference Result 804 states and 982 transitions. [2021-11-05 12:15:28,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 12:15:28,863 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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 67 [2021-11-05 12:15:28,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:15:28,865 INFO L225 Difference]: With dead ends: 804 [2021-11-05 12:15:28,865 INFO L226 Difference]: Without dead ends: 506 [2021-11-05 12:15:28,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 224.77ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:15:28,866 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 141 mSDsluCounter, 1680 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 595.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 2064 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.12ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 633.19ms IncrementalHoareTripleChecker+Time [2021-11-05 12:15:28,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 2064 Invalid, 236 Unknown, 0 Unchecked, 3.12ms Time], IncrementalHoareTripleChecker [28 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 633.19ms Time] [2021-11-05 12:15:28,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-11-05 12:15:28,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 373. [2021-11-05 12:15:28,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 356 states have (on average 1.2893258426966292) internal successors, (459), 372 states have internal predecessors, (459), 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) [2021-11-05 12:15:28,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 459 transitions. [2021-11-05 12:15:28,880 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 459 transitions. Word has length 67 [2021-11-05 12:15:28,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:15:28,880 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 459 transitions. [2021-11-05 12:15:28,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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) [2021-11-05 12:15:28,880 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 459 transitions. [2021-11-05 12:15:28,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-05 12:15:28,882 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:15:28,882 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:15:28,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 12:15:28,882 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:15:28,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:15:28,883 INFO L85 PathProgramCache]: Analyzing trace with hash -579601632, now seen corresponding path program 1 times [2021-11-05 12:15:28,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:15:28,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420995542] [2021-11-05 12:15:28,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:15:28,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:15:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:15:29,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:15:29,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:15:29,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420995542] [2021-11-05 12:15:29,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420995542] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:15:29,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:15:29,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 12:15:29,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432953038] [2021-11-05 12:15:29,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:15:29,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 12:15:29,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:15:29,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 12:15:29,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:15:29,322 INFO L87 Difference]: Start difference. First operand 373 states and 459 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2021-11-05 12:15:29,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:15:29,961 INFO L93 Difference]: Finished difference Result 621 states and 744 transitions. [2021-11-05 12:15:29,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:15:29,962 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 69 [2021-11-05 12:15:29,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:15:29,964 INFO L225 Difference]: With dead ends: 621 [2021-11-05 12:15:29,964 INFO L226 Difference]: Without dead ends: 615 [2021-11-05 12:15:29,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 149.92ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:15:29,965 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 317 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 510.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.69ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 542.90ms IncrementalHoareTripleChecker+Time [2021-11-05 12:15:29,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 1289 Invalid, 187 Unknown, 0 Unchecked, 2.69ms Time], IncrementalHoareTripleChecker [26 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 542.90ms Time] [2021-11-05 12:15:29,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-11-05 12:15:29,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 393. [2021-11-05 12:15:29,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 376 states have (on average 1.273936170212766) internal successors, (479), 392 states have internal predecessors, (479), 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) [2021-11-05 12:15:29,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 479 transitions. [2021-11-05 12:15:29,979 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 479 transitions. Word has length 69 [2021-11-05 12:15:29,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:15:29,979 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 479 transitions. [2021-11-05 12:15:29,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2021-11-05 12:15:29,980 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 479 transitions. [2021-11-05 12:15:29,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-05 12:15:29,980 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:15:29,981 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:15:29,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 12:15:29,981 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:15:29,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:15:29,982 INFO L85 PathProgramCache]: Analyzing trace with hash 2057535045, now seen corresponding path program 1 times [2021-11-05 12:15:29,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:15:29,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176525345] [2021-11-05 12:15:29,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:15:29,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:15:30,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:15:30,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:15:30,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:15:30,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176525345] [2021-11-05 12:15:30,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176525345] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:15:30,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:15:30,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:15:30,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542973014] [2021-11-05 12:15:30,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:15:30,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:15:30,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:15:30,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:15:30,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:15:30,860 INFO L87 Difference]: Start difference. First operand 393 states and 479 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 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) [2021-11-05 12:15:32,916 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:15:35,031 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:15:36,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:15:36,127 INFO L93 Difference]: Finished difference Result 830 states and 997 transitions. [2021-11-05 12:15:36,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:15:36,128 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 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) Word has length 71 [2021-11-05 12:15:36,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:15:36,130 INFO L225 Difference]: With dead ends: 830 [2021-11-05 12:15:36,131 INFO L226 Difference]: Without dead ends: 515 [2021-11-05 12:15:36,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 75.75ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:15:36,132 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 239 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 21 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4902.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.51ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5202.32ms IncrementalHoareTripleChecker+Time [2021-11-05 12:15:36,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 1062 Invalid, 275 Unknown, 0 Unchecked, 3.51ms Time], IncrementalHoareTripleChecker [21 Valid, 252 Invalid, 2 Unknown, 0 Unchecked, 5202.32ms Time] [2021-11-05 12:15:36,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2021-11-05 12:15:36,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 393. [2021-11-05 12:15:36,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 376 states have (on average 1.2553191489361701) internal successors, (472), 392 states have internal predecessors, (472), 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) [2021-11-05 12:15:36,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 472 transitions. [2021-11-05 12:15:36,146 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 472 transitions. Word has length 71 [2021-11-05 12:15:36,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:15:36,147 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 472 transitions. [2021-11-05 12:15:36,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 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) [2021-11-05 12:15:36,147 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 472 transitions. [2021-11-05 12:15:36,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-05 12:15:36,148 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:15:36,148 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:15:36,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 12:15:36,149 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:15:36,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:15:36,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1921333697, now seen corresponding path program 1 times [2021-11-05 12:15:36,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:15:36,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695485022] [2021-11-05 12:15:36,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:15:36,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:15:38,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:15:39,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:15:39,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:15:39,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695485022] [2021-11-05 12:15:39,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695485022] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:15:39,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:15:39,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 12:15:39,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003545259] [2021-11-05 12:15:39,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:15:39,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 12:15:39,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:15:39,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 12:15:39,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:15:39,105 INFO L87 Difference]: Start difference. First operand 393 states and 472 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 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) [2021-11-05 12:15:41,162 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:15:42,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:15:42,572 INFO L93 Difference]: Finished difference Result 815 states and 987 transitions. [2021-11-05 12:15:42,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-05 12:15:42,573 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 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) Word has length 71 [2021-11-05 12:15:42,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:15:42,574 INFO L225 Difference]: With dead ends: 815 [2021-11-05 12:15:42,574 INFO L226 Difference]: Without dead ends: 449 [2021-11-05 12:15:42,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 631.83ms TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2021-11-05 12:15:42,575 INFO L933 BasicCegarLoop]: 325 mSDtfsCounter, 1039 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2825.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.82ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3012.80ms IncrementalHoareTripleChecker+Time [2021-11-05 12:15:42,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1039 Valid, 1317 Invalid, 270 Unknown, 0 Unchecked, 4.82ms Time], IncrementalHoareTripleChecker [17 Valid, 252 Invalid, 1 Unknown, 0 Unchecked, 3012.80ms Time] [2021-11-05 12:15:42,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2021-11-05 12:15:42,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 391. [2021-11-05 12:15:42,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 374 states have (on average 1.2540106951871657) internal successors, (469), 390 states have internal predecessors, (469), 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) [2021-11-05 12:15:42,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 469 transitions. [2021-11-05 12:15:42,589 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 469 transitions. Word has length 71 [2021-11-05 12:15:42,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:15:42,589 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 469 transitions. [2021-11-05 12:15:42,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 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) [2021-11-05 12:15:42,590 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 469 transitions. [2021-11-05 12:15:42,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-05 12:15:42,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:15:42,590 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:15:42,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 12:15:42,591 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:15:42,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:15:42,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1814979209, now seen corresponding path program 1 times [2021-11-05 12:15:42,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:15:42,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186087731] [2021-11-05 12:15:42,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:15:42,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:15:42,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:15:43,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:15:43,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:15:43,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186087731] [2021-11-05 12:15:43,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186087731] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:15:43,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:15:43,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 12:15:43,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763332325] [2021-11-05 12:15:43,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:15:43,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 12:15:43,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:15:43,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 12:15:43,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:15:43,247 INFO L87 Difference]: Start difference. First operand 391 states and 469 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 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) [2021-11-05 12:15:44,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:15:44,085 INFO L93 Difference]: Finished difference Result 927 states and 1098 transitions. [2021-11-05 12:15:44,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 12:15:44,086 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 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 75 [2021-11-05 12:15:44,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:15:44,087 INFO L225 Difference]: With dead ends: 927 [2021-11-05 12:15:44,088 INFO L226 Difference]: Without dead ends: 550 [2021-11-05 12:15:44,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 244.53ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:15:44,089 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 169 mSDsluCounter, 1753 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 648.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 2157 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.34ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 690.01ms IncrementalHoareTripleChecker+Time [2021-11-05 12:15:44,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 2157 Invalid, 236 Unknown, 0 Unchecked, 3.34ms Time], IncrementalHoareTripleChecker [28 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 690.01ms Time] [2021-11-05 12:15:44,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-11-05 12:15:44,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 391. [2021-11-05 12:15:44,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 374 states have (on average 1.2459893048128343) internal successors, (466), 390 states have internal predecessors, (466), 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) [2021-11-05 12:15:44,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 466 transitions. [2021-11-05 12:15:44,104 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 466 transitions. Word has length 75 [2021-11-05 12:15:44,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:15:44,105 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 466 transitions. [2021-11-05 12:15:44,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 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) [2021-11-05 12:15:44,105 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 466 transitions. [2021-11-05 12:15:44,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-05 12:15:44,106 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:15:44,106 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:15:44,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-05 12:15:44,106 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:15:44,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:15:44,107 INFO L85 PathProgramCache]: Analyzing trace with hash -679199566, now seen corresponding path program 1 times [2021-11-05 12:15:44,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:15:44,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607891367] [2021-11-05 12:15:44,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:15:44,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:15:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:15:44,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:15:44,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:15:44,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607891367] [2021-11-05 12:15:44,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607891367] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:15:44,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:15:44,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:15:44,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173661102] [2021-11-05 12:15:44,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:15:44,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:15:44,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:15:44,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:15:44,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:15:44,685 INFO L87 Difference]: Start difference. First operand 391 states and 466 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) [2021-11-05 12:15:46,740 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:15:47,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:15:47,848 INFO L93 Difference]: Finished difference Result 1164 states and 1387 transitions. [2021-11-05 12:15:47,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:15:47,849 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 77 [2021-11-05 12:15:47,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:15:47,851 INFO L225 Difference]: With dead ends: 1164 [2021-11-05 12:15:47,851 INFO L226 Difference]: Without dead ends: 793 [2021-11-05 12:15:47,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 113.58ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:15:47,853 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 647 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2856.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.62ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3061.49ms IncrementalHoareTripleChecker+Time [2021-11-05 12:15:47,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [647 Valid, 688 Invalid, 287 Unknown, 0 Unchecked, 3.62ms Time], IncrementalHoareTripleChecker [27 Valid, 259 Invalid, 1 Unknown, 0 Unchecked, 3061.49ms Time] [2021-11-05 12:15:47,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2021-11-05 12:15:47,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 445. [2021-11-05 12:15:47,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 428 states have (on average 1.25) internal successors, (535), 444 states have internal predecessors, (535), 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) [2021-11-05 12:15:47,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 535 transitions. [2021-11-05 12:15:47,870 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 535 transitions. Word has length 77 [2021-11-05 12:15:47,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:15:47,870 INFO L470 AbstractCegarLoop]: Abstraction has 445 states and 535 transitions. [2021-11-05 12:15:47,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) [2021-11-05 12:15:47,870 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 535 transitions. [2021-11-05 12:15:47,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-05 12:15:47,871 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:15:47,871 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:15:47,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-05 12:15:47,872 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:15:47,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:15:47,872 INFO L85 PathProgramCache]: Analyzing trace with hash -118499788, now seen corresponding path program 1 times [2021-11-05 12:15:47,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:15:47,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261653625] [2021-11-05 12:15:47,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:15:47,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:15:47,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:15:48,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:15:48,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:15:48,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261653625] [2021-11-05 12:15:48,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261653625] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:15:48,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:15:48,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:15:48,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009560671] [2021-11-05 12:15:48,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:15:48,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:15:48,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:15:48,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:15:48,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:15:48,055 INFO L87 Difference]: Start difference. First operand 445 states and 535 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2021-11-05 12:15:48,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:15:48,342 INFO L93 Difference]: Finished difference Result 909 states and 1089 transitions. [2021-11-05 12:15:48,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:15:48,343 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 77 [2021-11-05 12:15:48,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:15:48,344 INFO L225 Difference]: With dead ends: 909 [2021-11-05 12:15:48,344 INFO L226 Difference]: Without dead ends: 474 [2021-11-05 12:15:48,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.34ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:15:48,345 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 29 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 226.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.18ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 243.28ms IncrementalHoareTripleChecker+Time [2021-11-05 12:15:48,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 835 Invalid, 90 Unknown, 0 Unchecked, 1.18ms Time], IncrementalHoareTripleChecker [15 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 243.28ms Time] [2021-11-05 12:15:48,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2021-11-05 12:15:48,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 444. [2021-11-05 12:15:48,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 427 states have (on average 1.2295081967213115) internal successors, (525), 443 states have internal predecessors, (525), 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) [2021-11-05 12:15:48,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 525 transitions. [2021-11-05 12:15:48,361 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 525 transitions. Word has length 77 [2021-11-05 12:15:48,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:15:48,361 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 525 transitions. [2021-11-05 12:15:48,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2021-11-05 12:15:48,362 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 525 transitions. [2021-11-05 12:15:48,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-05 12:15:48,362 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:15:48,362 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:15:48,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-05 12:15:48,363 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:15:48,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:15:48,363 INFO L85 PathProgramCache]: Analyzing trace with hash -733592464, now seen corresponding path program 1 times [2021-11-05 12:15:48,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:15:48,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978729010] [2021-11-05 12:15:48,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:15:48,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:15:50,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:15:50,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:15:50,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:15:50,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978729010] [2021-11-05 12:15:50,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978729010] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:15:50,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:15:50,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 12:15:50,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481257500] [2021-11-05 12:15:50,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:15:50,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 12:15:50,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:15:50,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 12:15:50,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:15:50,702 INFO L87 Difference]: Start difference. First operand 444 states and 525 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 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) [2021-11-05 12:15:52,758 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:15:54,876 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:15:56,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:15:56,217 INFO L93 Difference]: Finished difference Result 995 states and 1177 transitions. [2021-11-05 12:15:56,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 12:15:56,218 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 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 77 [2021-11-05 12:15:56,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:15:56,220 INFO L225 Difference]: With dead ends: 995 [2021-11-05 12:15:56,220 INFO L226 Difference]: Without dead ends: 636 [2021-11-05 12:15:56,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 500.61ms TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-11-05 12:15:56,221 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 702 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4902.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 1530 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.23ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5229.34ms IncrementalHoareTripleChecker+Time [2021-11-05 12:15:56,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [702 Valid, 1530 Invalid, 302 Unknown, 0 Unchecked, 5.23ms Time], IncrementalHoareTripleChecker [7 Valid, 293 Invalid, 2 Unknown, 0 Unchecked, 5229.34ms Time] [2021-11-05 12:15:56,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2021-11-05 12:15:56,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 589. [2021-11-05 12:15:56,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 572 states have (on average 1.2342657342657342) internal successors, (706), 588 states have internal predecessors, (706), 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) [2021-11-05 12:15:56,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 706 transitions. [2021-11-05 12:15:56,241 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 706 transitions. Word has length 77 [2021-11-05 12:15:56,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:15:56,241 INFO L470 AbstractCegarLoop]: Abstraction has 589 states and 706 transitions. [2021-11-05 12:15:56,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 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) [2021-11-05 12:15:56,242 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 706 transitions. [2021-11-05 12:15:56,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-05 12:15:56,245 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:15:56,245 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:15:56,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-05 12:15:56,245 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:15:56,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:15:56,246 INFO L85 PathProgramCache]: Analyzing trace with hash -282222071, now seen corresponding path program 1 times [2021-11-05 12:15:56,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:15:56,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326650528] [2021-11-05 12:15:56,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:15:56,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:15:58,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:15:59,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:15:59,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:15:59,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326650528] [2021-11-05 12:15:59,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326650528] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:15:59,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:15:59,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-05 12:15:59,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800577262] [2021-11-05 12:15:59,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:15:59,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-05 12:15:59,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:15:59,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-05 12:15:59,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-05 12:15:59,037 INFO L87 Difference]: Start difference. First operand 589 states and 706 transitions. Second operand has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:16:01,083 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:16:03,236 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:16:05,375 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:16:07,529 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:16:10,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:16:10,124 INFO L93 Difference]: Finished difference Result 1260 states and 1519 transitions. [2021-11-05 12:16:10,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-05 12:16:10,124 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-05 12:16:10,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:16:10,132 INFO L225 Difference]: With dead ends: 1260 [2021-11-05 12:16:10,132 INFO L226 Difference]: Without dead ends: 780 [2021-11-05 12:16:10,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1644.95ms TimeCoverageRelationStatistics Valid=240, Invalid=572, Unknown=0, NotChecked=0, Total=812 [2021-11-05 12:16:10,134 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 1903 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 55 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9237.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1903 SdHoareTripleChecker+Valid, 1484 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.96ms SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9855.87ms IncrementalHoareTripleChecker+Time [2021-11-05 12:16:10,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1903 Valid, 1484 Invalid, 473 Unknown, 0 Unchecked, 6.96ms Time], IncrementalHoareTripleChecker [55 Valid, 414 Invalid, 4 Unknown, 0 Unchecked, 9855.87ms Time] [2021-11-05 12:16:10,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2021-11-05 12:16:10,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 622. [2021-11-05 12:16:10,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 605 states have (on average 1.2413223140495868) internal successors, (751), 621 states have internal predecessors, (751), 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) [2021-11-05 12:16:10,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 751 transitions. [2021-11-05 12:16:10,156 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 751 transitions. Word has length 79 [2021-11-05 12:16:10,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:16:10,157 INFO L470 AbstractCegarLoop]: Abstraction has 622 states and 751 transitions. [2021-11-05 12:16:10,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:16:10,157 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 751 transitions. [2021-11-05 12:16:10,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-05 12:16:10,158 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:16:10,158 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:16:10,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-05 12:16:10,158 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:16:10,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:16:10,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1289398312, now seen corresponding path program 1 times [2021-11-05 12:16:10,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:16:10,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479216656] [2021-11-05 12:16:10,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:16:10,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:16:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:16:10,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:16:10,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:16:10,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479216656] [2021-11-05 12:16:10,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479216656] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:16:10,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:16:10,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:16:10,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990752883] [2021-11-05 12:16:10,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:16:10,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:16:10,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:16:10,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:16:10,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:16:10,346 INFO L87 Difference]: Start difference. First operand 622 states and 751 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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) [2021-11-05 12:16:10,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:16:10,614 INFO L93 Difference]: Finished difference Result 1309 states and 1559 transitions. [2021-11-05 12:16:10,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:16:10,615 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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 85 [2021-11-05 12:16:10,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:16:10,618 INFO L225 Difference]: With dead ends: 1309 [2021-11-05 12:16:10,618 INFO L226 Difference]: Without dead ends: 704 [2021-11-05 12:16:10,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.83ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:16:10,620 INFO L933 BasicCegarLoop]: 330 mSDtfsCounter, 124 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 206.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.20ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 221.70ms IncrementalHoareTripleChecker+Time [2021-11-05 12:16:10,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 810 Invalid, 88 Unknown, 0 Unchecked, 1.20ms Time], IncrementalHoareTripleChecker [15 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 221.70ms Time] [2021-11-05 12:16:10,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-11-05 12:16:10,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 608. [2021-11-05 12:16:10,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 591 states have (on average 1.2148900169204737) internal successors, (718), 607 states have internal predecessors, (718), 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) [2021-11-05 12:16:10,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 718 transitions. [2021-11-05 12:16:10,643 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 718 transitions. Word has length 85 [2021-11-05 12:16:10,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:16:10,643 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 718 transitions. [2021-11-05 12:16:10,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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) [2021-11-05 12:16:10,644 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 718 transitions. [2021-11-05 12:16:10,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-05 12:16:10,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:16:10,645 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:16:10,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-05 12:16:10,645 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:16:10,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:16:10,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1160201818, now seen corresponding path program 1 times [2021-11-05 12:16:10,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:16:10,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701189289] [2021-11-05 12:16:10,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:16:10,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:16:13,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:16:14,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:16:14,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:16:14,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701189289] [2021-11-05 12:16:14,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701189289] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:16:14,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:16:14,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-05 12:16:14,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996985553] [2021-11-05 12:16:14,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:16:14,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-05 12:16:14,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:16:14,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-05 12:16:14,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-11-05 12:16:14,368 INFO L87 Difference]: Start difference. First operand 608 states and 718 transitions. Second operand has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 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) [2021-11-05 12:16:16,413 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:16:18,570 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:16:20,693 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:16:22,811 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:16:24,921 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:16:27,057 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:16:29,198 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:16:32,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:16:32,132 INFO L93 Difference]: Finished difference Result 1107 states and 1294 transitions. [2021-11-05 12:16:32,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-05 12:16:32,133 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 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 85 [2021-11-05 12:16:32,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:16:32,135 INFO L225 Difference]: With dead ends: 1107 [2021-11-05 12:16:32,135 INFO L226 Difference]: Without dead ends: 740 [2021-11-05 12:16:32,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 2104.84ms TimeCoverageRelationStatistics Valid=279, Invalid=651, Unknown=0, NotChecked=0, Total=930 [2021-11-05 12:16:32,137 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 3165 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 108 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15345.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3165 SdHoareTripleChecker+Valid, 1387 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.97ms SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16324.26ms IncrementalHoareTripleChecker+Time [2021-11-05 12:16:32,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3165 Valid, 1387 Invalid, 602 Unknown, 0 Unchecked, 6.97ms Time], IncrementalHoareTripleChecker [108 Valid, 487 Invalid, 7 Unknown, 0 Unchecked, 16324.26ms Time] [2021-11-05 12:16:32,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2021-11-05 12:16:32,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 556. [2021-11-05 12:16:32,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 539 states have (on average 1.2040816326530612) internal successors, (649), 555 states have internal predecessors, (649), 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) [2021-11-05 12:16:32,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 649 transitions. [2021-11-05 12:16:32,158 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 649 transitions. Word has length 85 [2021-11-05 12:16:32,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:16:32,158 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 649 transitions. [2021-11-05 12:16:32,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 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) [2021-11-05 12:16:32,158 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 649 transitions. [2021-11-05 12:16:32,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-05 12:16:32,159 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:16:32,159 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:16:32,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-05 12:16:32,160 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:16:32,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:16:32,160 INFO L85 PathProgramCache]: Analyzing trace with hash -272808364, now seen corresponding path program 1 times [2021-11-05 12:16:32,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:16:32,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56917707] [2021-11-05 12:16:32,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:16:32,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:16:32,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:16:32,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:16:32,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:16:32,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56917707] [2021-11-05 12:16:32,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56917707] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:16:32,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:16:32,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 12:16:32,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746275049] [2021-11-05 12:16:32,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:16:32,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 12:16:32,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:16:32,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 12:16:32,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:16:32,969 INFO L87 Difference]: Start difference. First operand 556 states and 649 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2021-11-05 12:16:35,022 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:16:37,183 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:16:39,321 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:16:41,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:16:41,016 INFO L93 Difference]: Finished difference Result 1245 states and 1460 transitions. [2021-11-05 12:16:41,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 12:16:41,017 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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 85 [2021-11-05 12:16:41,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:16:41,019 INFO L225 Difference]: With dead ends: 1245 [2021-11-05 12:16:41,020 INFO L226 Difference]: Without dead ends: 1002 [2021-11-05 12:16:41,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 527.48ms TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-11-05 12:16:41,021 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 900 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 41 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7167.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.75ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7664.57ms IncrementalHoareTripleChecker+Time [2021-11-05 12:16:41,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [900 Valid, 1431 Invalid, 488 Unknown, 0 Unchecked, 4.75ms Time], IncrementalHoareTripleChecker [41 Valid, 444 Invalid, 3 Unknown, 0 Unchecked, 7664.57ms Time] [2021-11-05 12:16:41,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2021-11-05 12:16:41,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 661. [2021-11-05 12:16:41,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 644 states have (on average 1.187888198757764) internal successors, (765), 660 states have internal predecessors, (765), 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) [2021-11-05 12:16:41,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 765 transitions. [2021-11-05 12:16:41,045 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 765 transitions. Word has length 85 [2021-11-05 12:16:41,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:16:41,046 INFO L470 AbstractCegarLoop]: Abstraction has 661 states and 765 transitions. [2021-11-05 12:16:41,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2021-11-05 12:16:41,046 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 765 transitions. [2021-11-05 12:16:41,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-05 12:16:41,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:16:41,047 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:16:41,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-05 12:16:41,048 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:16:41,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:16:41,048 INFO L85 PathProgramCache]: Analyzing trace with hash 407250006, now seen corresponding path program 1 times [2021-11-05 12:16:41,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:16:41,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561162442] [2021-11-05 12:16:41,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:16:41,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:16:41,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:16:41,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:16:41,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:16:41,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561162442] [2021-11-05 12:16:41,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561162442] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:16:41,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:16:41,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:16:41,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688320059] [2021-11-05 12:16:41,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:16:41,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:16:41,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:16:41,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:16:41,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:16:41,520 INFO L87 Difference]: Start difference. First operand 661 states and 765 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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) [2021-11-05 12:16:43,576 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:16:45,739 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:16:46,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:16:46,527 INFO L93 Difference]: Finished difference Result 1042 states and 1212 transitions. [2021-11-05 12:16:46,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:16:46,527 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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 85 [2021-11-05 12:16:46,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:16:46,530 INFO L225 Difference]: With dead ends: 1042 [2021-11-05 12:16:46,530 INFO L226 Difference]: Without dead ends: 742 [2021-11-05 12:16:46,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 86.78ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:16:46,531 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 231 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 19 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4624.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.05ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4950.40ms IncrementalHoareTripleChecker+Time [2021-11-05 12:16:46,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 697 Invalid, 222 Unknown, 0 Unchecked, 2.05ms Time], IncrementalHoareTripleChecker [19 Valid, 201 Invalid, 2 Unknown, 0 Unchecked, 4950.40ms Time] [2021-11-05 12:16:46,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2021-11-05 12:16:46,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 649. [2021-11-05 12:16:46,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 632 states have (on average 1.1724683544303798) internal successors, (741), 648 states have internal predecessors, (741), 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) [2021-11-05 12:16:46,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 741 transitions. [2021-11-05 12:16:46,554 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 741 transitions. Word has length 85 [2021-11-05 12:16:46,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:16:46,554 INFO L470 AbstractCegarLoop]: Abstraction has 649 states and 741 transitions. [2021-11-05 12:16:46,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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) [2021-11-05 12:16:46,554 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 741 transitions. [2021-11-05 12:16:46,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-05 12:16:46,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:16:46,555 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:16:46,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-05 12:16:46,556 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:16:46,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:16:46,556 INFO L85 PathProgramCache]: Analyzing trace with hash -345194922, now seen corresponding path program 1 times [2021-11-05 12:16:46,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:16:46,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717286651] [2021-11-05 12:16:46,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:16:46,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:16:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:16:47,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:16:47,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:16:47,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717286651] [2021-11-05 12:16:47,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717286651] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:16:47,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:16:47,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-05 12:16:47,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561814216] [2021-11-05 12:16:47,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:16:47,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-05 12:16:47,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:16:47,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-05 12:16:47,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-05 12:16:47,712 INFO L87 Difference]: Start difference. First operand 649 states and 741 transitions. Second operand has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 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) [2021-11-05 12:16:49,768 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:16:51,917 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:16:54,055 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:16:56,160 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:16:58,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:16:58,958 INFO L93 Difference]: Finished difference Result 1872 states and 2146 transitions. [2021-11-05 12:16:58,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-05 12:16:58,959 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 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 85 [2021-11-05 12:16:58,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:16:58,962 INFO L225 Difference]: With dead ends: 1872 [2021-11-05 12:16:58,962 INFO L226 Difference]: Without dead ends: 1425 [2021-11-05 12:16:58,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1368.05ms TimeCoverageRelationStatistics Valid=211, Invalid=491, Unknown=0, NotChecked=0, Total=702 [2021-11-05 12:16:58,964 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 3082 mSDsluCounter, 1554 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 108 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9585.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3082 SdHoareTripleChecker+Valid, 1894 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.98ms SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10211.47ms IncrementalHoareTripleChecker+Time [2021-11-05 12:16:58,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3082 Valid, 1894 Invalid, 696 Unknown, 0 Unchecked, 8.98ms Time], IncrementalHoareTripleChecker [108 Valid, 584 Invalid, 4 Unknown, 0 Unchecked, 10211.47ms Time] [2021-11-05 12:16:58,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1425 states. [2021-11-05 12:16:58,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1425 to 884. [2021-11-05 12:16:58,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 884 states, 867 states have (on average 1.1787773933102652) internal successors, (1022), 883 states have internal predecessors, (1022), 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) [2021-11-05 12:16:58,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1022 transitions. [2021-11-05 12:16:58,998 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1022 transitions. Word has length 85 [2021-11-05 12:16:58,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:16:58,998 INFO L470 AbstractCegarLoop]: Abstraction has 884 states and 1022 transitions. [2021-11-05 12:16:58,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 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) [2021-11-05 12:16:58,999 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1022 transitions. [2021-11-05 12:16:58,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-05 12:16:58,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:16:59,000 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:16:59,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-05 12:16:59,000 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:16:59,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:16:59,001 INFO L85 PathProgramCache]: Analyzing trace with hash -399587820, now seen corresponding path program 1 times [2021-11-05 12:16:59,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:16:59,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813450006] [2021-11-05 12:16:59,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:16:59,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:17:03,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:17:03,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:17:03,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:17:03,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813450006] [2021-11-05 12:17:03,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813450006] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:17:03,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:17:03,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 12:17:03,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061465879] [2021-11-05 12:17:03,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:17:03,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 12:17:03,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:17:03,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 12:17:03,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:17:03,918 INFO L87 Difference]: Start difference. First operand 884 states and 1022 transitions. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 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) [2021-11-05 12:17:05,977 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:17:08,122 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:17:10,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:17:10,013 INFO L93 Difference]: Finished difference Result 1288 states and 1493 transitions. [2021-11-05 12:17:10,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-05 12:17:10,014 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 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 85 [2021-11-05 12:17:10,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:17:10,017 INFO L225 Difference]: With dead ends: 1288 [2021-11-05 12:17:10,017 INFO L226 Difference]: Without dead ends: 1051 [2021-11-05 12:17:10,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 875.65ms TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-11-05 12:17:10,018 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 1128 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 34 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5190.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.68ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5548.13ms IncrementalHoareTripleChecker+Time [2021-11-05 12:17:10,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1128 Valid, 1174 Invalid, 410 Unknown, 0 Unchecked, 4.68ms Time], IncrementalHoareTripleChecker [34 Valid, 374 Invalid, 2 Unknown, 0 Unchecked, 5548.13ms Time] [2021-11-05 12:17:10,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2021-11-05 12:17:10,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 894. [2021-11-05 12:17:10,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 877 states have (on average 1.1733181299885975) internal successors, (1029), 893 states have internal predecessors, (1029), 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) [2021-11-05 12:17:10,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1029 transitions. [2021-11-05 12:17:10,052 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1029 transitions. Word has length 85 [2021-11-05 12:17:10,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:17:10,052 INFO L470 AbstractCegarLoop]: Abstraction has 894 states and 1029 transitions. [2021-11-05 12:17:10,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 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) [2021-11-05 12:17:10,053 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1029 transitions. [2021-11-05 12:17:10,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-05 12:17:10,054 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:17:10,054 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:17:10,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-05 12:17:10,055 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:17:10,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:17:10,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1499307213, now seen corresponding path program 1 times [2021-11-05 12:17:10,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:17:10,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914406251] [2021-11-05 12:17:10,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:17:10,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:17:11,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:17:12,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:17:12,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:17:12,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914406251] [2021-11-05 12:17:12,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914406251] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:17:12,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:17:12,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 12:17:12,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943539449] [2021-11-05 12:17:12,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:17:12,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 12:17:12,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:17:12,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 12:17:12,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:17:12,609 INFO L87 Difference]: Start difference. First operand 894 states and 1029 transitions. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 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) [2021-11-05 12:17:14,652 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:17:16,778 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:17:18,920 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:17:20,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:17:20,920 INFO L93 Difference]: Finished difference Result 977 states and 1107 transitions. [2021-11-05 12:17:20,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 12:17:20,920 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 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 86 [2021-11-05 12:17:20,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:17:20,923 INFO L225 Difference]: With dead ends: 977 [2021-11-05 12:17:20,923 INFO L226 Difference]: Without dead ends: 975 [2021-11-05 12:17:20,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 830.51ms TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-11-05 12:17:20,924 INFO L933 BasicCegarLoop]: 426 mSDtfsCounter, 836 mSDsluCounter, 1588 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 17 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7387.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 2014 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.12ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7858.54ms IncrementalHoareTripleChecker+Time [2021-11-05 12:17:20,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [836 Valid, 2014 Invalid, 528 Unknown, 0 Unchecked, 7.12ms Time], IncrementalHoareTripleChecker [17 Valid, 508 Invalid, 3 Unknown, 0 Unchecked, 7858.54ms Time] [2021-11-05 12:17:20,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2021-11-05 12:17:20,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 892. [2021-11-05 12:17:20,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 876 states have (on average 1.1723744292237444) internal successors, (1027), 891 states have internal predecessors, (1027), 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) [2021-11-05 12:17:20,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1027 transitions. [2021-11-05 12:17:20,960 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1027 transitions. Word has length 86 [2021-11-05 12:17:20,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:17:20,960 INFO L470 AbstractCegarLoop]: Abstraction has 892 states and 1027 transitions. [2021-11-05 12:17:20,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 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) [2021-11-05 12:17:20,960 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1027 transitions. [2021-11-05 12:17:20,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-05 12:17:20,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:17:20,962 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:17:20,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-05 12:17:20,962 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:17:20,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:17:20,963 INFO L85 PathProgramCache]: Analyzing trace with hash 941267087, now seen corresponding path program 1 times [2021-11-05 12:17:20,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:17:20,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138073929] [2021-11-05 12:17:20,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:17:20,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:17:21,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:17:21,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:17:21,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:17:21,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138073929] [2021-11-05 12:17:21,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138073929] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:17:21,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:17:21,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 12:17:21,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969572203] [2021-11-05 12:17:21,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:17:21,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 12:17:21,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:17:21,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 12:17:21,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:17:21,394 INFO L87 Difference]: Start difference. First operand 892 states and 1027 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:17:22,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:17:22,363 INFO L93 Difference]: Finished difference Result 1288 states and 1507 transitions. [2021-11-05 12:17:22,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 12:17:22,364 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-05 12:17:22,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:17:22,367 INFO L225 Difference]: With dead ends: 1288 [2021-11-05 12:17:22,368 INFO L226 Difference]: Without dead ends: 1282 [2021-11-05 12:17:22,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 290.77ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-11-05 12:17:22,369 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 316 mSDsluCounter, 1582 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 711.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 1888 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.53ms SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 756.85ms IncrementalHoareTripleChecker+Time [2021-11-05 12:17:22,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 1888 Invalid, 353 Unknown, 0 Unchecked, 3.53ms Time], IncrementalHoareTripleChecker [65 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 756.85ms Time] [2021-11-05 12:17:22,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2021-11-05 12:17:22,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 956. [2021-11-05 12:17:22,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 940 states have (on average 1.1606382978723404) internal successors, (1091), 955 states have internal predecessors, (1091), 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) [2021-11-05 12:17:22,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1091 transitions. [2021-11-05 12:17:22,406 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1091 transitions. Word has length 87 [2021-11-05 12:17:22,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:17:22,407 INFO L470 AbstractCegarLoop]: Abstraction has 956 states and 1091 transitions. [2021-11-05 12:17:22,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:17:22,407 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1091 transitions. [2021-11-05 12:17:22,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-05 12:17:22,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:17:22,408 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:17:22,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-05 12:17:22,409 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:17:22,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:17:22,409 INFO L85 PathProgramCache]: Analyzing trace with hash 131920461, now seen corresponding path program 1 times [2021-11-05 12:17:22,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:17:22,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619772145] [2021-11-05 12:17:22,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:17:22,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:17:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:17:23,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:17:23,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:17:23,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619772145] [2021-11-05 12:17:23,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619772145] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:17:23,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:17:23,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 12:17:23,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492612995] [2021-11-05 12:17:23,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:17:23,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 12:17:23,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:17:23,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 12:17:23,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:17:23,178 INFO L87 Difference]: Start difference. First operand 956 states and 1091 transitions. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:17:25,223 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:17:27,342 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:17:29,478 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:17:31,614 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:17:33,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:17:33,870 INFO L93 Difference]: Finished difference Result 1516 states and 1738 transitions. [2021-11-05 12:17:33,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-05 12:17:33,875 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-05 12:17:33,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:17:33,879 INFO L225 Difference]: With dead ends: 1516 [2021-11-05 12:17:33,879 INFO L226 Difference]: Without dead ends: 1260 [2021-11-05 12:17:33,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 831.50ms TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2021-11-05 12:17:33,880 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 1114 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 58 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9437.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 1402 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.29ms SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10069.73ms IncrementalHoareTripleChecker+Time [2021-11-05 12:17:33,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1114 Valid, 1402 Invalid, 610 Unknown, 0 Unchecked, 5.29ms Time], IncrementalHoareTripleChecker [58 Valid, 548 Invalid, 4 Unknown, 0 Unchecked, 10069.73ms Time] [2021-11-05 12:17:33,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2021-11-05 12:17:33,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 932. [2021-11-05 12:17:33,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 916 states have (on average 1.1561135371179039) internal successors, (1059), 931 states have internal predecessors, (1059), 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) [2021-11-05 12:17:33,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1059 transitions. [2021-11-05 12:17:33,915 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1059 transitions. Word has length 87 [2021-11-05 12:17:33,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:17:33,916 INFO L470 AbstractCegarLoop]: Abstraction has 932 states and 1059 transitions. [2021-11-05 12:17:33,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:17:33,916 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1059 transitions. [2021-11-05 12:17:33,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-05 12:17:33,917 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:17:33,918 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:17:33,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-05 12:17:33,918 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:17:33,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:17:33,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1444052467, now seen corresponding path program 1 times [2021-11-05 12:17:33,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:17:33,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845956285] [2021-11-05 12:17:33,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:17:33,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:17:36,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:17:38,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:17:38,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:17:38,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845956285] [2021-11-05 12:17:38,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845956285] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:17:38,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:17:38,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-05 12:17:38,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523948730] [2021-11-05 12:17:38,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:17:38,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-05 12:17:38,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:17:38,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-05 12:17:38,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-11-05 12:17:38,049 INFO L87 Difference]: Start difference. First operand 932 states and 1059 transitions. Second operand has 19 states, 19 states have (on average 4.578947368421052) internal successors, (87), 19 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:17:40,091 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:17:42,223 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:17:44,325 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:17:46,470 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:17:48,586 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:17:50,725 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:17:52,853 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:17:55,002 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:18:02,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:18:02,520 INFO L93 Difference]: Finished difference Result 1209 states and 1356 transitions. [2021-11-05 12:18:02,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-05 12:18:02,521 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.578947368421052) internal successors, (87), 19 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-05 12:18:02,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:18:02,524 INFO L225 Difference]: With dead ends: 1209 [2021-11-05 12:18:02,524 INFO L226 Difference]: Without dead ends: 1201 [2021-11-05 12:18:02,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 858 ImplicationChecksByTransitivity, 5563.32ms TimeCoverageRelationStatistics Valid=843, Invalid=2939, Unknown=0, NotChecked=0, Total=3782 [2021-11-05 12:18:02,526 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 2534 mSDsluCounter, 2017 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 247 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18392.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2534 SdHoareTripleChecker+Valid, 2256 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.57ms SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19554.89ms IncrementalHoareTripleChecker+Time [2021-11-05 12:18:02,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2534 Valid, 2256 Invalid, 1289 Unknown, 0 Unchecked, 11.57ms Time], IncrementalHoareTripleChecker [247 Valid, 1034 Invalid, 8 Unknown, 0 Unchecked, 19554.89ms Time] [2021-11-05 12:18:02,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2021-11-05 12:18:02,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 915. [2021-11-05 12:18:02,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 915 states, 901 states have (on average 1.1564927857935627) internal successors, (1042), 914 states have internal predecessors, (1042), 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) [2021-11-05 12:18:02,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1042 transitions. [2021-11-05 12:18:02,555 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1042 transitions. Word has length 87 [2021-11-05 12:18:02,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:18:02,555 INFO L470 AbstractCegarLoop]: Abstraction has 915 states and 1042 transitions. [2021-11-05 12:18:02,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.578947368421052) internal successors, (87), 19 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:18:02,556 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1042 transitions. [2021-11-05 12:18:02,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-05 12:18:02,562 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:18:02,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:18:02,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-05 12:18:02,564 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:18:02,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:18:02,565 INFO L85 PathProgramCache]: Analyzing trace with hash -404556664, now seen corresponding path program 1 times [2021-11-05 12:18:02,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:18:02,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367020414] [2021-11-05 12:18:02,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:18:02,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:18:02,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:18:02,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:18:02,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:18:02,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367020414] [2021-11-05 12:18:02,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367020414] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:18:02,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:18:02,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 12:18:02,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394101971] [2021-11-05 12:18:02,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:18:02,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 12:18:02,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:18:02,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 12:18:02,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:18:02,931 INFO L87 Difference]: Start difference. First operand 915 states and 1042 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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) [2021-11-05 12:18:03,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:18:03,388 INFO L93 Difference]: Finished difference Result 1241 states and 1412 transitions. [2021-11-05 12:18:03,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:18:03,388 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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 94 [2021-11-05 12:18:03,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:18:03,391 INFO L225 Difference]: With dead ends: 1241 [2021-11-05 12:18:03,391 INFO L226 Difference]: Without dead ends: 1237 [2021-11-05 12:18:03,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 145.97ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:18:03,392 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 172 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 337.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.82ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 360.95ms IncrementalHoareTripleChecker+Time [2021-11-05 12:18:03,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 1212 Invalid, 167 Unknown, 0 Unchecked, 1.82ms Time], IncrementalHoareTripleChecker [20 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 360.95ms Time] [2021-11-05 12:18:03,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2021-11-05 12:18:03,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 939. [2021-11-05 12:18:03,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 939 states, 925 states have (on average 1.1524324324324324) internal successors, (1066), 938 states have internal predecessors, (1066), 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) [2021-11-05 12:18:03,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1066 transitions. [2021-11-05 12:18:03,431 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1066 transitions. Word has length 94 [2021-11-05 12:18:03,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:18:03,432 INFO L470 AbstractCegarLoop]: Abstraction has 939 states and 1066 transitions. [2021-11-05 12:18:03,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 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) [2021-11-05 12:18:03,432 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1066 transitions. [2021-11-05 12:18:03,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-05 12:18:03,433 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:18:03,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:18:03,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-05 12:18:03,434 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:18:03,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:18:03,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1357559296, now seen corresponding path program 1 times [2021-11-05 12:18:03,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:18:03,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576255611] [2021-11-05 12:18:03,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:18:03,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:18:03,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:18:03,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:18:03,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:18:03,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576255611] [2021-11-05 12:18:03,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576255611] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:18:03,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:18:03,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 12:18:03,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178500339] [2021-11-05 12:18:03,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:18:03,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 12:18:03,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:18:03,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 12:18:03,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:18:03,881 INFO L87 Difference]: Start difference. First operand 939 states and 1066 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 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) [2021-11-05 12:18:05,925 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:18:08,094 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:18:10,189 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:18:11,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:18:11,704 INFO L93 Difference]: Finished difference Result 1373 states and 1546 transitions. [2021-11-05 12:18:11,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 12:18:11,705 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 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 98 [2021-11-05 12:18:11,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:18:11,708 INFO L225 Difference]: With dead ends: 1373 [2021-11-05 12:18:11,708 INFO L226 Difference]: Without dead ends: 998 [2021-11-05 12:18:11,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 457.04ms TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-11-05 12:18:11,710 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 751 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 31 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6967.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.98ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7432.12ms IncrementalHoareTripleChecker+Time [2021-11-05 12:18:11,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [751 Valid, 1237 Invalid, 412 Unknown, 0 Unchecked, 3.98ms Time], IncrementalHoareTripleChecker [31 Valid, 378 Invalid, 3 Unknown, 0 Unchecked, 7432.12ms Time] [2021-11-05 12:18:11,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2021-11-05 12:18:11,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 760. [2021-11-05 12:18:11,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 746 states have (on average 1.148793565683646) internal successors, (857), 759 states have internal predecessors, (857), 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) [2021-11-05 12:18:11,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 857 transitions. [2021-11-05 12:18:11,738 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 857 transitions. Word has length 98 [2021-11-05 12:18:11,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:18:11,738 INFO L470 AbstractCegarLoop]: Abstraction has 760 states and 857 transitions. [2021-11-05 12:18:11,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 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) [2021-11-05 12:18:11,738 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 857 transitions. [2021-11-05 12:18:11,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-05 12:18:11,739 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:18:11,739 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:18:11,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-05 12:18:11,739 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:18:11,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:18:11,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1528610440, now seen corresponding path program 1 times [2021-11-05 12:18:11,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:18:11,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875396223] [2021-11-05 12:18:11,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:18:11,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:18:11,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:18:11,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:18:11,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:18:11,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875396223] [2021-11-05 12:18:11,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875396223] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:18:11,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:18:11,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:18:11,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671217281] [2021-11-05 12:18:11,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:18:11,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:18:11,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:18:11,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:18:11,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:18:11,902 INFO L87 Difference]: Start difference. First operand 760 states and 857 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2021-11-05 12:18:11,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:18:11,976 INFO L93 Difference]: Finished difference Result 1030 states and 1158 transitions. [2021-11-05 12:18:11,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 12:18:11,977 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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 98 [2021-11-05 12:18:11,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:18:11,978 INFO L225 Difference]: With dead ends: 1030 [2021-11-05 12:18:11,978 INFO L226 Difference]: Without dead ends: 804 [2021-11-05 12:18:11,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.63ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:18:11,980 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 72 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.52ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.92ms IncrementalHoareTripleChecker+Time [2021-11-05 12:18:11,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 856 Invalid, 10 Unknown, 0 Unchecked, 0.52ms Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 27.92ms Time] [2021-11-05 12:18:11,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2021-11-05 12:18:12,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 724. [2021-11-05 12:18:12,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 710 states have (on average 1.128169014084507) internal successors, (801), 723 states have internal predecessors, (801), 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) [2021-11-05 12:18:12,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 801 transitions. [2021-11-05 12:18:12,008 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 801 transitions. Word has length 98 [2021-11-05 12:18:12,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:18:12,009 INFO L470 AbstractCegarLoop]: Abstraction has 724 states and 801 transitions. [2021-11-05 12:18:12,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2021-11-05 12:18:12,009 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 801 transitions. [2021-11-05 12:18:12,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-05 12:18:12,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:18:12,009 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:18:12,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-05 12:18:12,010 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:18:12,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:18:12,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1528621363, now seen corresponding path program 1 times [2021-11-05 12:18:12,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:18:12,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677979424] [2021-11-05 12:18:12,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:18:12,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:18:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:18:14,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:18:14,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:18:14,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677979424] [2021-11-05 12:18:14,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677979424] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:18:14,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:18:14,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-05 12:18:14,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44873318] [2021-11-05 12:18:14,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:18:14,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-05 12:18:14,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:18:14,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-05 12:18:14,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-05 12:18:14,862 INFO L87 Difference]: Start difference. First operand 724 states and 801 transitions. Second operand has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 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) [2021-11-05 12:18:16,904 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:18:19,057 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:18:21,167 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:18:23,320 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:18:25,458 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:18:27,607 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:18:32,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:18:32,335 INFO L93 Difference]: Finished difference Result 1141 states and 1232 transitions. [2021-11-05 12:18:32,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-05 12:18:32,336 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 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 98 [2021-11-05 12:18:32,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:18:32,339 INFO L225 Difference]: With dead ends: 1141 [2021-11-05 12:18:32,339 INFO L226 Difference]: Without dead ends: 1137 [2021-11-05 12:18:32,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 2459.98ms TimeCoverageRelationStatistics Valid=395, Invalid=1245, Unknown=0, NotChecked=0, Total=1640 [2021-11-05 12:18:32,340 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 2472 mSDsluCounter, 2288 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 56 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14592.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2472 SdHoareTripleChecker+Valid, 2502 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.60ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15566.66ms IncrementalHoareTripleChecker+Time [2021-11-05 12:18:32,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2472 Valid, 2502 Invalid, 1050 Unknown, 0 Unchecked, 11.60ms Time], IncrementalHoareTripleChecker [56 Valid, 988 Invalid, 6 Unknown, 0 Unchecked, 15566.66ms Time] [2021-11-05 12:18:32,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2021-11-05 12:18:32,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 832. [2021-11-05 12:18:32,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 818 states have (on average 1.1222493887530562) internal successors, (918), 831 states have internal predecessors, (918), 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) [2021-11-05 12:18:32,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 918 transitions. [2021-11-05 12:18:32,380 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 918 transitions. Word has length 98 [2021-11-05 12:18:32,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:18:32,381 INFO L470 AbstractCegarLoop]: Abstraction has 832 states and 918 transitions. [2021-11-05 12:18:32,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 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) [2021-11-05 12:18:32,381 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 918 transitions. [2021-11-05 12:18:32,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-05 12:18:32,382 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:18:32,382 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:18:32,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-05 12:18:32,383 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:18:32,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:18:32,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1501555761, now seen corresponding path program 1 times [2021-11-05 12:18:32,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:18:32,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313407596] [2021-11-05 12:18:32,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:18:32,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:18:32,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:18:33,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:18:33,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:18:33,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313407596] [2021-11-05 12:18:33,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313407596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:18:33,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:18:33,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-05 12:18:33,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671982519] [2021-11-05 12:18:33,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:18:33,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-05 12:18:33,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:18:33,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-05 12:18:33,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-05 12:18:33,525 INFO L87 Difference]: Start difference. First operand 832 states and 918 transitions. Second operand has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 13 states have internal predecessors, (98), 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) [2021-11-05 12:18:35,584 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:18:37,743 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:18:39,857 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:18:41,976 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:18:44,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:18:44,623 INFO L93 Difference]: Finished difference Result 1291 states and 1412 transitions. [2021-11-05 12:18:44,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-05 12:18:44,624 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 13 states have internal predecessors, (98), 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 98 [2021-11-05 12:18:44,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:18:44,626 INFO L225 Difference]: With dead ends: 1291 [2021-11-05 12:18:44,626 INFO L226 Difference]: Without dead ends: 876 [2021-11-05 12:18:44,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1119.74ms TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2021-11-05 12:18:44,627 INFO L933 BasicCegarLoop]: 410 mSDtfsCounter, 1796 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 77 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9719.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1796 SdHoareTripleChecker+Valid, 2092 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.80ms SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10337.45ms IncrementalHoareTripleChecker+Time [2021-11-05 12:18:44,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1796 Valid, 2092 Invalid, 778 Unknown, 0 Unchecked, 7.80ms Time], IncrementalHoareTripleChecker [77 Valid, 697 Invalid, 4 Unknown, 0 Unchecked, 10337.45ms Time] [2021-11-05 12:18:44,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2021-11-05 12:18:44,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 724. [2021-11-05 12:18:44,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 710 states have (on average 1.119718309859155) internal successors, (795), 723 states have internal predecessors, (795), 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) [2021-11-05 12:18:44,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 795 transitions. [2021-11-05 12:18:44,653 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 795 transitions. Word has length 98 [2021-11-05 12:18:44,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:18:44,653 INFO L470 AbstractCegarLoop]: Abstraction has 724 states and 795 transitions. [2021-11-05 12:18:44,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 13 states have internal predecessors, (98), 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) [2021-11-05 12:18:44,654 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 795 transitions. [2021-11-05 12:18:44,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-05 12:18:44,654 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:18:44,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:18:44,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-05 12:18:44,654 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:18:44,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:18:44,655 INFO L85 PathProgramCache]: Analyzing trace with hash 426716941, now seen corresponding path program 1 times [2021-11-05 12:18:44,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:18:44,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958899435] [2021-11-05 12:18:44,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:18:44,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:18:45,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:18:45,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:18:45,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:18:45,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958899435] [2021-11-05 12:18:45,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958899435] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:18:45,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:18:45,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 12:18:45,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092725627] [2021-11-05 12:18:45,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:18:45,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 12:18:45,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:18:45,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 12:18:45,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:18:45,639 INFO L87 Difference]: Start difference. First operand 724 states and 795 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 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) [2021-11-05 12:18:47,698 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:18:49,814 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:18:51,972 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:18:53,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:18:53,928 INFO L93 Difference]: Finished difference Result 1115 states and 1216 transitions. [2021-11-05 12:18:53,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-05 12:18:53,929 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 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 98 [2021-11-05 12:18:53,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:18:53,931 INFO L225 Difference]: With dead ends: 1115 [2021-11-05 12:18:53,931 INFO L226 Difference]: Without dead ends: 935 [2021-11-05 12:18:53,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 591.06ms TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-11-05 12:18:53,932 INFO L933 BasicCegarLoop]: 414 mSDtfsCounter, 598 mSDsluCounter, 1558 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 27 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7418.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 1972 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.42ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7871.33ms IncrementalHoareTripleChecker+Time [2021-11-05 12:18:53,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [598 Valid, 1972 Invalid, 598 Unknown, 0 Unchecked, 5.42ms Time], IncrementalHoareTripleChecker [27 Valid, 568 Invalid, 3 Unknown, 0 Unchecked, 7871.33ms Time] [2021-11-05 12:18:53,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2021-11-05 12:18:53,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 724. [2021-11-05 12:18:53,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 710 states have (on average 1.115492957746479) internal successors, (792), 723 states have internal predecessors, (792), 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) [2021-11-05 12:18:53,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 792 transitions. [2021-11-05 12:18:53,966 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 792 transitions. Word has length 98 [2021-11-05 12:18:53,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:18:53,967 INFO L470 AbstractCegarLoop]: Abstraction has 724 states and 792 transitions. [2021-11-05 12:18:53,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 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) [2021-11-05 12:18:53,967 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 792 transitions. [2021-11-05 12:18:53,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-05 12:18:53,967 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:18:53,968 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:18:53,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-05 12:18:53,968 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:18:53,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:18:53,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1262226801, now seen corresponding path program 1 times [2021-11-05 12:18:53,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:18:53,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473047403] [2021-11-05 12:18:53,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:18:53,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:18:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:18:57,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:18:57,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:18:57,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473047403] [2021-11-05 12:18:57,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473047403] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:18:57,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:18:57,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-05 12:18:57,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003392767] [2021-11-05 12:18:57,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:18:57,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-05 12:18:57,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:18:57,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-05 12:18:57,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-05 12:18:57,300 INFO L87 Difference]: Start difference. First operand 724 states and 792 transitions. Second operand has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 13 states have internal predecessors, (98), 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) [2021-11-05 12:18:59,345 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:19:01,497 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:19:03,598 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:19:05,723 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:19:09,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:19:09,713 INFO L93 Difference]: Finished difference Result 829 states and 896 transitions. [2021-11-05 12:19:09,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-05 12:19:09,714 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 13 states have internal predecessors, (98), 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 98 [2021-11-05 12:19:09,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:19:09,717 INFO L225 Difference]: With dead ends: 829 [2021-11-05 12:19:09,717 INFO L226 Difference]: Without dead ends: 825 [2021-11-05 12:19:09,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 2898.51ms TimeCoverageRelationStatistics Valid=243, Invalid=569, Unknown=0, NotChecked=0, Total=812 [2021-11-05 12:19:09,718 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 2022 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 47 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9337.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2022 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.37ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9926.74ms IncrementalHoareTripleChecker+Time [2021-11-05 12:19:09,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2022 Valid, 1120 Invalid, 537 Unknown, 0 Unchecked, 7.37ms Time], IncrementalHoareTripleChecker [47 Valid, 486 Invalid, 4 Unknown, 0 Unchecked, 9926.74ms Time] [2021-11-05 12:19:09,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2021-11-05 12:19:09,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 722. [2021-11-05 12:19:09,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 709 states have (on average 1.1128349788434415) internal successors, (789), 721 states have internal predecessors, (789), 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) [2021-11-05 12:19:09,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 789 transitions. [2021-11-05 12:19:09,750 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 789 transitions. Word has length 98 [2021-11-05 12:19:09,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:19:09,750 INFO L470 AbstractCegarLoop]: Abstraction has 722 states and 789 transitions. [2021-11-05 12:19:09,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 13 states have internal predecessors, (98), 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) [2021-11-05 12:19:09,750 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 789 transitions. [2021-11-05 12:19:09,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-05 12:19:09,751 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:19:09,751 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:19:09,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-05 12:19:09,751 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:19:09,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:19:09,752 INFO L85 PathProgramCache]: Analyzing trace with hash 2102697280, now seen corresponding path program 1 times [2021-11-05 12:19:09,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:19:09,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279270496] [2021-11-05 12:19:09,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:19:09,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:19:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:19:12,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:19:12,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:19:12,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279270496] [2021-11-05 12:19:12,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279270496] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:19:12,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:19:12,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-05 12:19:12,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281038890] [2021-11-05 12:19:12,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:19:12,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-05 12:19:12,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:19:12,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-05 12:19:12,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-05 12:19:12,807 INFO L87 Difference]: Start difference. First operand 722 states and 789 transitions. Second operand has 16 states, 16 states have (on average 6.9375) internal successors, (111), 16 states have internal predecessors, (111), 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) [2021-11-05 12:19:14,850 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:19:17,004 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:19:19,120 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:19:23,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:19:23,666 INFO L93 Difference]: Finished difference Result 1373 states and 1474 transitions. [2021-11-05 12:19:23,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-05 12:19:23,667 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.9375) internal successors, (111), 16 states have internal predecessors, (111), 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 111 [2021-11-05 12:19:23,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:19:23,670 INFO L225 Difference]: With dead ends: 1373 [2021-11-05 12:19:23,670 INFO L226 Difference]: Without dead ends: 1229 [2021-11-05 12:19:23,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 2252.67ms TimeCoverageRelationStatistics Valid=327, Invalid=863, Unknown=0, NotChecked=0, Total=1190 [2021-11-05 12:19:23,671 INFO L933 BasicCegarLoop]: 548 mSDtfsCounter, 1920 mSDsluCounter, 3846 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 50 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8547.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1920 SdHoareTripleChecker+Valid, 4394 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.90ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9065.75ms IncrementalHoareTripleChecker+Time [2021-11-05 12:19:23,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1920 Valid, 4394 Invalid, 1071 Unknown, 0 Unchecked, 13.90ms Time], IncrementalHoareTripleChecker [50 Valid, 1018 Invalid, 3 Unknown, 0 Unchecked, 9065.75ms Time] [2021-11-05 12:19:23,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2021-11-05 12:19:23,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 733. [2021-11-05 12:19:23,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 720 states have (on average 1.1125) internal successors, (801), 732 states have internal predecessors, (801), 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) [2021-11-05 12:19:23,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 801 transitions. [2021-11-05 12:19:23,717 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 801 transitions. Word has length 111 [2021-11-05 12:19:23,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:19:23,717 INFO L470 AbstractCegarLoop]: Abstraction has 733 states and 801 transitions. [2021-11-05 12:19:23,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.9375) internal successors, (111), 16 states have internal predecessors, (111), 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) [2021-11-05 12:19:23,718 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 801 transitions. [2021-11-05 12:19:23,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-05 12:19:23,719 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:19:23,719 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:19:23,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-05 12:19:23,719 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:19:23,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:19:23,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1512211646, now seen corresponding path program 1 times [2021-11-05 12:19:23,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:19:23,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674211643] [2021-11-05 12:19:23,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:19:23,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:19:23,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:19:24,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:19:24,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:19:24,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674211643] [2021-11-05 12:19:24,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674211643] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:19:24,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:19:24,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:19:24,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806551693] [2021-11-05 12:19:24,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:19:24,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:19:24,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:19:24,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:19:24,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:19:24,128 INFO L87 Difference]: Start difference. First operand 733 states and 801 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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) [2021-11-05 12:19:26,178 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:19:26,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:19:26,756 INFO L93 Difference]: Finished difference Result 1231 states and 1352 transitions. [2021-11-05 12:19:26,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 12:19:26,756 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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 111 [2021-11-05 12:19:26,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:19:26,758 INFO L225 Difference]: With dead ends: 1231 [2021-11-05 12:19:26,758 INFO L226 Difference]: Without dead ends: 725 [2021-11-05 12:19:26,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 70.10ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:19:26,759 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 35 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2412.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.40ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2553.27ms IncrementalHoareTripleChecker+Time [2021-11-05 12:19:26,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 650 Invalid, 146 Unknown, 0 Unchecked, 1.40ms Time], IncrementalHoareTripleChecker [17 Valid, 128 Invalid, 1 Unknown, 0 Unchecked, 2553.27ms Time] [2021-11-05 12:19:26,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2021-11-05 12:19:26,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 725. [2021-11-05 12:19:26,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 712 states have (on average 1.0912921348314606) internal successors, (777), 724 states have internal predecessors, (777), 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) [2021-11-05 12:19:26,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 777 transitions. [2021-11-05 12:19:26,786 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 777 transitions. Word has length 111 [2021-11-05 12:19:26,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:19:26,786 INFO L470 AbstractCegarLoop]: Abstraction has 725 states and 777 transitions. [2021-11-05 12:19:26,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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) [2021-11-05 12:19:26,786 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 777 transitions. [2021-11-05 12:19:26,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-05 12:19:26,787 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:19:26,787 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:19:26,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-05 12:19:26,788 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:19:26,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:19:26,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1929761287, now seen corresponding path program 1 times [2021-11-05 12:19:26,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:19:26,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049642368] [2021-11-05 12:19:26,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:19:26,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:19:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:19:27,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:19:27,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:19:27,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049642368] [2021-11-05 12:19:27,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049642368] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:19:27,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:19:27,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 12:19:27,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526008753] [2021-11-05 12:19:27,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:19:27,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 12:19:27,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:19:27,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 12:19:27,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:19:27,503 INFO L87 Difference]: Start difference. First operand 725 states and 777 transitions. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 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) [2021-11-05 12:19:29,557 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:19:31,714 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:19:33,897 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:19:36,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:19:36,079 INFO L93 Difference]: Finished difference Result 908 states and 977 transitions. [2021-11-05 12:19:36,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-05 12:19:36,080 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 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 113 [2021-11-05 12:19:36,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:19:36,082 INFO L225 Difference]: With dead ends: 908 [2021-11-05 12:19:36,082 INFO L226 Difference]: Without dead ends: 902 [2021-11-05 12:19:36,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 799.26ms TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-11-05 12:19:36,083 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 413 mSDsluCounter, 2001 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 95 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7560.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 2315 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.67ms SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8042.16ms IncrementalHoareTripleChecker+Time [2021-11-05 12:19:36,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [413 Valid, 2315 Invalid, 761 Unknown, 0 Unchecked, 6.67ms Time], IncrementalHoareTripleChecker [95 Valid, 663 Invalid, 3 Unknown, 0 Unchecked, 8042.16ms Time] [2021-11-05 12:19:36,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2021-11-05 12:19:36,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 726. [2021-11-05 12:19:36,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 714 states have (on average 1.0854341736694677) internal successors, (775), 725 states have internal predecessors, (775), 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) [2021-11-05 12:19:36,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 775 transitions. [2021-11-05 12:19:36,112 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 775 transitions. Word has length 113 [2021-11-05 12:19:36,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:19:36,112 INFO L470 AbstractCegarLoop]: Abstraction has 726 states and 775 transitions. [2021-11-05 12:19:36,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 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) [2021-11-05 12:19:36,112 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 775 transitions. [2021-11-05 12:19:36,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-05 12:19:36,113 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:19:36,113 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:19:36,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-05 12:19:36,113 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:19:36,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:19:36,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1405455785, now seen corresponding path program 1 times [2021-11-05 12:19:36,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:19:36,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988094291] [2021-11-05 12:19:36,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:19:36,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:19:36,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:19:36,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:19:36,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:19:36,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988094291] [2021-11-05 12:19:36,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988094291] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:19:36,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:19:36,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 12:19:36,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071473507] [2021-11-05 12:19:36,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:19:36,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 12:19:36,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:19:36,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 12:19:36,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:19:36,697 INFO L87 Difference]: Start difference. First operand 726 states and 775 transitions. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 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) [2021-11-05 12:19:38,739 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:19:40,889 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:19:43,047 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:19:44,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:19:44,727 INFO L93 Difference]: Finished difference Result 869 states and 919 transitions. [2021-11-05 12:19:44,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 12:19:44,728 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 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 114 [2021-11-05 12:19:44,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:19:44,730 INFO L225 Difference]: With dead ends: 869 [2021-11-05 12:19:44,730 INFO L226 Difference]: Without dead ends: 817 [2021-11-05 12:19:44,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 472.29ms TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-11-05 12:19:44,731 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 649 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 33 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7147.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.62ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7649.58ms IncrementalHoareTripleChecker+Time [2021-11-05 12:19:44,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [649 Valid, 1405 Invalid, 488 Unknown, 0 Unchecked, 4.62ms Time], IncrementalHoareTripleChecker [33 Valid, 452 Invalid, 3 Unknown, 0 Unchecked, 7649.58ms Time] [2021-11-05 12:19:44,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2021-11-05 12:19:44,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 726. [2021-11-05 12:19:44,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 714 states have (on average 1.0826330532212884) internal successors, (773), 725 states have internal predecessors, (773), 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) [2021-11-05 12:19:44,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 773 transitions. [2021-11-05 12:19:44,761 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 773 transitions. Word has length 114 [2021-11-05 12:19:44,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:19:44,761 INFO L470 AbstractCegarLoop]: Abstraction has 726 states and 773 transitions. [2021-11-05 12:19:44,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 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) [2021-11-05 12:19:44,762 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 773 transitions. [2021-11-05 12:19:44,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-05 12:19:44,763 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:19:44,763 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:19:44,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-05 12:19:44,763 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:19:44,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:19:44,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1130881669, now seen corresponding path program 1 times [2021-11-05 12:19:44,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:19:44,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079127128] [2021-11-05 12:19:44,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:19:44,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:19:45,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:19:45,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:19:45,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:19:45,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079127128] [2021-11-05 12:19:45,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079127128] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:19:45,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:19:45,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 12:19:45,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673793365] [2021-11-05 12:19:45,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:19:45,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 12:19:45,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:19:45,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 12:19:45,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:19:45,485 INFO L87 Difference]: Start difference. First operand 726 states and 773 transitions. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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) [2021-11-05 12:19:47,527 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:19:49,637 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:19:50,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:19:50,290 INFO L93 Difference]: Finished difference Result 789 states and 835 transitions. [2021-11-05 12:19:50,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:19:50,290 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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 114 [2021-11-05 12:19:50,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:19:50,292 INFO L225 Difference]: With dead ends: 789 [2021-11-05 12:19:50,292 INFO L226 Difference]: Without dead ends: 667 [2021-11-05 12:19:50,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 94.94ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:19:50,293 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 7 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4501.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.62ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4766.64ms IncrementalHoareTripleChecker+Time [2021-11-05 12:19:50,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 882 Invalid, 196 Unknown, 0 Unchecked, 1.62ms Time], IncrementalHoareTripleChecker [0 Valid, 194 Invalid, 2 Unknown, 0 Unchecked, 4766.64ms Time] [2021-11-05 12:19:50,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2021-11-05 12:19:50,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 667. [2021-11-05 12:19:50,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 655 states have (on average 1.0748091603053436) internal successors, (704), 666 states have internal predecessors, (704), 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) [2021-11-05 12:19:50,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 704 transitions. [2021-11-05 12:19:50,328 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 704 transitions. Word has length 114 [2021-11-05 12:19:50,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:19:50,328 INFO L470 AbstractCegarLoop]: Abstraction has 667 states and 704 transitions. [2021-11-05 12:19:50,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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) [2021-11-05 12:19:50,328 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 704 transitions. [2021-11-05 12:19:50,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-05 12:19:50,330 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:19:50,330 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:19:50,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-05 12:19:50,330 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:19:50,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:19:50,331 INFO L85 PathProgramCache]: Analyzing trace with hash 357213547, now seen corresponding path program 1 times [2021-11-05 12:19:50,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:19:50,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21449271] [2021-11-05 12:19:50,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:19:50,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:19:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:19:58,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:19:58,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:19:58,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21449271] [2021-11-05 12:19:58,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21449271] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:19:58,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:19:58,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-11-05 12:19:58,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453533969] [2021-11-05 12:19:58,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:19:58,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-05 12:19:58,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:19:58,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-05 12:19:58,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2021-11-05 12:19:58,155 INFO L87 Difference]: Start difference. First operand 667 states and 704 transitions. Second operand has 25 states, 25 states have (on average 4.56) internal successors, (114), 25 states have internal predecessors, (114), 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) [2021-11-05 12:20:00,197 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:20:02,356 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:20:04,523 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:20:06,640 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:20:08,785 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:20:10,929 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:20:13,092 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:20:15,215 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:20:17,345 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:20:19,457 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:20:28,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:20:28,242 INFO L93 Difference]: Finished difference Result 828 states and 865 transitions. [2021-11-05 12:20:28,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-05 12:20:28,243 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.56) internal successors, (114), 25 states have internal predecessors, (114), 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 114 [2021-11-05 12:20:28,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:20:28,245 INFO L225 Difference]: With dead ends: 828 [2021-11-05 12:20:28,245 INFO L226 Difference]: Without dead ends: 776 [2021-11-05 12:20:28,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 5620.36ms TimeCoverageRelationStatistics Valid=826, Invalid=2480, Unknown=0, NotChecked=0, Total=3306 [2021-11-05 12:20:28,247 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 2957 mSDsluCounter, 2888 mSDsCounter, 0 mSdLazyCounter, 1316 mSolverCounterSat, 102 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24561.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2957 SdHoareTripleChecker+Valid, 3095 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.35ms SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1316 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26129.41ms IncrementalHoareTripleChecker+Time [2021-11-05 12:20:28,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2957 Valid, 3095 Invalid, 1428 Unknown, 0 Unchecked, 15.35ms Time], IncrementalHoareTripleChecker [102 Valid, 1316 Invalid, 10 Unknown, 0 Unchecked, 26129.41ms Time] [2021-11-05 12:20:28,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2021-11-05 12:20:28,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 657. [2021-11-05 12:20:28,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 645 states have (on average 1.069767441860465) internal successors, (690), 656 states have internal predecessors, (690), 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) [2021-11-05 12:20:28,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 690 transitions. [2021-11-05 12:20:28,275 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 690 transitions. Word has length 114 [2021-11-05 12:20:28,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:20:28,276 INFO L470 AbstractCegarLoop]: Abstraction has 657 states and 690 transitions. [2021-11-05 12:20:28,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.56) internal successors, (114), 25 states have internal predecessors, (114), 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) [2021-11-05 12:20:28,276 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 690 transitions. [2021-11-05 12:20:28,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-05 12:20:28,277 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:20:28,277 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:20:28,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-05 12:20:28,278 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-05 12:20:28,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:20:28,278 INFO L85 PathProgramCache]: Analyzing trace with hash -2079309597, now seen corresponding path program 1 times [2021-11-05 12:20:28,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:20:28,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721821349] [2021-11-05 12:20:28,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:20:28,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:20:34,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:20:37,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:20:37,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:20:37,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721821349] [2021-11-05 12:20:37,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721821349] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 12:20:37,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462539379] [2021-11-05 12:20:37,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:20:37,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:20:37,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:20:37,908 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 12:20:37,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 12:20:38,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:20:38,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 3138 conjuncts, 109 conjunts are in the unsatisfiable core [2021-11-05 12:20:39,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 12:20:39,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-05 12:20:39,579 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-05 12:20:39,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-05 12:20:39,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-05 12:20:41,651 INFO L354 Elim1Store]: treesize reduction 27, result has 38.6 percent of original size [2021-11-05 12:20:41,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 62 [2021-11-05 12:20:41,721 INFO L354 Elim1Store]: treesize reduction 31, result has 38.0 percent of original size [2021-11-05 12:20:41,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 47 [2021-11-05 12:20:46,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-05 12:20:46,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 60 [2021-11-05 12:20:47,835 INFO L354 Elim1Store]: treesize reduction 462, result has 22.6 percent of original size [2021-11-05 12:20:47,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 142 treesize of output 233 [2021-11-05 12:21:02,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 12:21:03,158 INFO L354 Elim1Store]: treesize reduction 131, result has 35.1 percent of original size [2021-11-05 12:21:03,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 186 treesize of output 201 [2021-11-05 12:25:02,864 INFO L354 Elim1Store]: treesize reduction 145, result has 32.2 percent of original size [2021-11-05 12:25:02,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 296 treesize of output 291 Killed by 15