./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_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_dynamic_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 b1e17fda858e874821809b4efef78fd91cf6fdf1723d3ff0faf91ee901e13b86 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 12:01:42,552 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 12:01:42,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 12:01:42,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 12:01:42,585 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 12:01:42,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 12:01:42,587 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 12:01:42,588 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 12:01:42,589 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 12:01:42,590 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 12:01:42,591 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 12:01:42,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 12:01:42,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 12:01:42,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 12:01:42,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 12:01:42,608 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 12:01:42,609 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 12:01:42,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 12:01:42,620 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 12:01:42,626 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 12:01:42,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 12:01:42,630 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 12:01:42,631 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 12:01:42,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 12:01:42,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 12:01:42,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 12:01:42,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 12:01:42,644 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 12:01:42,645 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 12:01:42,646 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 12:01:42,646 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 12:01:42,647 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 12:01:42,648 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 12:01:42,649 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 12:01:42,649 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 12:01:42,650 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 12:01:42,650 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 12:01:42,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 12:01:42,651 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 12:01:42,651 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 12:01:42,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 12:01:42,653 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 12:01:42,683 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 12:01:42,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 12:01:42,684 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 12:01:42,685 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 12:01:42,687 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 12:01:42,687 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 12:01:42,688 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 12:01:42,688 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 12:01:42,688 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 12:01:42,688 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 12:01:42,689 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 12:01:42,689 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 12:01:42,689 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 12:01:42,689 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 12:01:42,689 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 12:01:42,690 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 12:01:42,690 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 12:01:42,690 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 12:01:42,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 12:01:42,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 12:01:42,691 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 12:01:42,692 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 12:01:42,692 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 12:01:42,699 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 12:01:42,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 12:01:42,700 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 12:01:42,700 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 12:01:42,700 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 12:01:42,700 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 12:01:42,700 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1e17fda858e874821809b4efef78fd91cf6fdf1723d3ff0faf91ee901e13b86 [2021-11-05 12:01:43,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 12:01:43,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 12:01:43,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 12:01:43,066 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 12:01:43,067 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 12:01:43,069 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i [2021-11-05 12:01:43,143 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5b16e6e3/9e300878600d4b4ab69461c669bb73a8/FLAGe5bc4649e [2021-11-05 12:01:43,942 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 12:01:43,943 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i [2021-11-05 12:01:43,979 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5b16e6e3/9e300878600d4b4ab69461c669bb73a8/FLAGe5bc4649e [2021-11-05 12:01:44,148 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5b16e6e3/9e300878600d4b4ab69461c669bb73a8 [2021-11-05 12:01:44,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 12:01:44,153 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 12:01:44,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 12:01:44,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 12:01:44,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 12:01:44,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 12:01:44" (1/1) ... [2021-11-05 12:01:44,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25bd971f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:01:44, skipping insertion in model container [2021-11-05 12:01:44,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 12:01:44" (1/1) ... [2021-11-05 12:01:44,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 12:01:44,265 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 12:01:44,575 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_dynamic_harness.i[4501,4514] [2021-11-05 12:01:44,586 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_dynamic_harness.i[4561,4574] [2021-11-05 12:01:44,616 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 12:01:44,621 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 12:01:45,254 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:01:45,261 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:01:45,263 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:01:45,264 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:01:45,265 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:01:45,278 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:01:45,296 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:01:45,297 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:01:45,298 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:01:45,531 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 12:01:45,532 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 12:01:45,534 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 12:01:45,536 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 12:01:45,543 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 12:01:45,544 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 12:01:45,544 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 12:01:45,545 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 12:01:45,558 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 12:01:45,558 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 12:01:45,704 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 12:01:45,721 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:01:45,721 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:01:45,806 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:01:45,807 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:01:45,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 12:01:45,911 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 12:01:45,933 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_dynamic_harness.i[4501,4514] [2021-11-05 12:01:45,934 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_dynamic_harness.i[4561,4574] [2021-11-05 12:01:45,935 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 12:01:45,936 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 12:01:45,974 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:01:45,975 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:01:45,976 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:01:45,976 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:01:45,977 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:01:45,987 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:01:45,988 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:01:45,988 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:01:45,989 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:01:46,013 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 12:01:46,014 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 12:01:46,017 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 12:01:46,017 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 12:01:46,019 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 12:01:46,019 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 12:01:46,019 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 12:01:46,020 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 12:01:46,021 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 12:01:46,027 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 12:01:46,043 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 12:01:46,055 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:01:46,055 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:01:46,118 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:01:46,131 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:01:46,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 12:01:46,336 INFO L208 MainTranslator]: Completed translation [2021-11-05 12:01:46,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:01:46 WrapperNode [2021-11-05 12:01:46,337 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 12:01:46,338 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 12:01:46,338 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 12:01:46,338 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 12:01:46,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:01:46" (1/1) ... [2021-11-05 12:01:46,458 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:01:46" (1/1) ... [2021-11-05 12:01:46,563 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 12:01:46,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 12:01:46,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 12:01:46,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 12:01:46,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:01:46" (1/1) ... [2021-11-05 12:01:46,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:01:46" (1/1) ... [2021-11-05 12:01:46,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:01:46" (1/1) ... [2021-11-05 12:01:46,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:01:46" (1/1) ... [2021-11-05 12:01:46,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:01:46" (1/1) ... [2021-11-05 12:01:46,673 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:01:46" (1/1) ... [2021-11-05 12:01:46,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:01:46" (1/1) ... [2021-11-05 12:01:46,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 12:01:46,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 12:01:46,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 12:01:46,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 12:01:46,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:01:46" (1/1) ... [2021-11-05 12:01:46,703 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 12:01:46,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:01:46,737 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 12:01:46,755 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 12:01:46,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 12:01:46,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 12:01:46,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 12:01:46,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 12:01:46,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 12:01:46,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 12:01:46,776 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-05 12:01:46,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 12:01:46,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 12:01:46,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 12:01:46,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 12:01:46,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 12:01:56,597 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 12:01:56,599 INFO L299 CfgBuilder]: Removed 228 assume(true) statements. [2021-11-05 12:01:56,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 12:01:56 BoogieIcfgContainer [2021-11-05 12:01:56,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 12:01:56,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 12:01:56,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 12:01:56,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 12:01:56,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 12:01:44" (1/3) ... [2021-11-05 12:01:56,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@661999a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 12:01:56, skipping insertion in model container [2021-11-05 12:01:56,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:01:46" (2/3) ... [2021-11-05 12:01:56,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@661999a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 12:01:56, skipping insertion in model container [2021-11-05 12:01:56,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 12:01:56" (3/3) ... [2021-11-05 12:01:56,618 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_dynamic_harness.i [2021-11-05 12:01:56,624 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 12:01:56,624 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-11-05 12:01:56,677 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 12:01:56,690 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 12:01:56,691 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-11-05 12:01:56,720 INFO L276 IsEmpty]: Start isEmpty. Operand has 410 states, 389 states have (on average 1.4601542416452442) internal successors, (568), 409 states have internal predecessors, (568), 0 states have call successors, (0), 0 states 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 12:01:56,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-05 12:01:56,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:01:56,727 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:01:56,728 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:01:56,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:01:56,733 INFO L85 PathProgramCache]: Analyzing trace with hash -127780390, now seen corresponding path program 1 times [2021-11-05 12:01:56,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:01:56,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481337930] [2021-11-05 12:01:56,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:01:56,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:01:57,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:01:57,313 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 12:01:57,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:01:57,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481337930] [2021-11-05 12:01:57,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481337930] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:01:57,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:01:57,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 12:01:57,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135995711] [2021-11-05 12:01:57,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:01:57,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 12:01:57,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:01:57,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 12:01:57,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 12:01:57,344 INFO L87 Difference]: Start difference. First operand has 410 states, 389 states have (on average 1.4601542416452442) internal successors, (568), 409 states have internal predecessors, (568), 0 states have call successors, (0), 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 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:01:57,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:01:57,381 INFO L93 Difference]: Finished difference Result 813 states and 1127 transitions. [2021-11-05 12:01:57,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 12:01:57,383 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-05 12:01:57,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:01:57,393 INFO L225 Difference]: With dead ends: 813 [2021-11-05 12:01:57,393 INFO L226 Difference]: Without dead ends: 405 [2021-11-05 12:01:57,398 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 12:01:57,400 INFO L933 BasicCegarLoop]: 518 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, 518 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.20ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 12:01:57,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 3.20ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 12:01:57,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2021-11-05 12:01:57,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2021-11-05 12:01:57,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 385 states have (on average 1.3324675324675326) internal successors, (513), 404 states have internal predecessors, (513), 0 states have call successors, (0), 0 states 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 12:01:57,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 513 transitions. [2021-11-05 12:01:57,452 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 513 transitions. Word has length 39 [2021-11-05 12:01:57,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:01:57,453 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 513 transitions. [2021-11-05 12:01:57,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:01:57,453 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 513 transitions. [2021-11-05 12:01:57,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-05 12:01:57,455 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:01:57,455 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] [2021-11-05 12:01:57,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 12:01:57,455 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:01:57,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:01:57,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1892452164, now seen corresponding path program 1 times [2021-11-05 12:01:57,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:01:57,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13814037] [2021-11-05 12:01:57,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:01:57,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:01:57,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:01:57,824 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 12:01:57,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:01:57,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13814037] [2021-11-05 12:01:57,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13814037] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:01:57,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:01:57,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:01:57,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547614292] [2021-11-05 12:01:57,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:01:57,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:01:57,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:01:57,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:01:57,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:01:57,827 INFO L87 Difference]: Start difference. First operand 405 states and 513 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 12:01:58,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:01:58,138 INFO L93 Difference]: Finished difference Result 787 states and 995 transitions. [2021-11-05 12:01:58,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 12:01:58,139 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2021-11-05 12:01:58,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:01:58,141 INFO L225 Difference]: With dead ends: 787 [2021-11-05 12:01:58,141 INFO L226 Difference]: Without dead ends: 405 [2021-11-05 12:01:58,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 137.19ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:01:58,143 INFO L933 BasicCegarLoop]: 499 mSDtfsCounter, 624 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 190.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.97ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 221.98ms IncrementalHoareTripleChecker+Time [2021-11-05 12:01:58,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [624 Valid, 854 Invalid, 46 Unknown, 0 Unchecked, 5.97ms Time], IncrementalHoareTripleChecker [8 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 221.98ms Time] [2021-11-05 12:01:58,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2021-11-05 12:01:58,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2021-11-05 12:01:58,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 385 states have (on average 1.3246753246753247) internal successors, (510), 404 states have internal predecessors, (510), 0 states have call successors, (0), 0 states 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 12:01:58,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 510 transitions. [2021-11-05 12:01:58,162 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 510 transitions. Word has length 41 [2021-11-05 12:01:58,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:01:58,162 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 510 transitions. [2021-11-05 12:01:58,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 12:01:58,163 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 510 transitions. [2021-11-05 12:01:58,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-05 12:01:58,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:01:58,164 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] [2021-11-05 12:01:58,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 12:01:58,165 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:01:58,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:01:58,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1022569822, now seen corresponding path program 1 times [2021-11-05 12:01:58,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:01:58,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366677594] [2021-11-05 12:01:58,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:01:58,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:01:58,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:01:58,428 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 12:01:58,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:01:58,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366677594] [2021-11-05 12:01:58,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366677594] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:01:58,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:01:58,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:01:58,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901110177] [2021-11-05 12:01:58,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:01:58,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:01:58,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:01:58,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:01:58,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:01:58,430 INFO L87 Difference]: Start difference. First operand 405 states and 510 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:01:59,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:01:59,038 INFO L93 Difference]: Finished difference Result 950 states and 1220 transitions. [2021-11-05 12:01:59,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:01:59,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-05 12:01:59,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:01:59,041 INFO L225 Difference]: With dead ends: 950 [2021-11-05 12:01:59,041 INFO L226 Difference]: Without dead ends: 559 [2021-11-05 12:01:59,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.50ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:01:59,043 INFO L933 BasicCegarLoop]: 620 mSDtfsCounter, 224 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 475.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.69ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 542.35ms IncrementalHoareTripleChecker+Time [2021-11-05 12:01:59,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 1627 Invalid, 146 Unknown, 0 Unchecked, 5.69ms Time], IncrementalHoareTripleChecker [25 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 542.35ms Time] [2021-11-05 12:01:59,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2021-11-05 12:01:59,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 419. [2021-11-05 12:01:59,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 399 states have (on average 1.31328320802005) internal successors, (524), 418 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 12:01:59,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 524 transitions. [2021-11-05 12:01:59,055 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 524 transitions. Word has length 53 [2021-11-05 12:01:59,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:01:59,056 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 524 transitions. [2021-11-05 12:01:59,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:01:59,056 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 524 transitions. [2021-11-05 12:01:59,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-05 12:01:59,058 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:01:59,058 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] [2021-11-05 12:01:59,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 12:01:59,059 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:01:59,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:01:59,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1446216544, now seen corresponding path program 1 times [2021-11-05 12:01:59,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:01:59,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805298195] [2021-11-05 12:01:59,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:01:59,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:01:59,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:01:59,327 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 12:01:59,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:01:59,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805298195] [2021-11-05 12:01:59,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805298195] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:01:59,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:01:59,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:01:59,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833237752] [2021-11-05 12:01:59,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:01:59,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:01:59,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:01:59,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:01:59,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:01:59,329 INFO L87 Difference]: Start difference. First operand 419 states and 524 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:01:59,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:01:59,845 INFO L93 Difference]: Finished difference Result 884 states and 1115 transitions. [2021-11-05 12:01:59,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:01:59,846 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-05 12:01:59,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:01:59,848 INFO L225 Difference]: With dead ends: 884 [2021-11-05 12:01:59,848 INFO L226 Difference]: Without dead ends: 489 [2021-11-05 12:01:59,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.24ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:01:59,849 INFO L933 BasicCegarLoop]: 554 mSDtfsCounter, 167 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 420.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.61ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 461.79ms IncrementalHoareTripleChecker+Time [2021-11-05 12:01:59,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 1427 Invalid, 141 Unknown, 0 Unchecked, 4.61ms Time], IncrementalHoareTripleChecker [25 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 461.79ms Time] [2021-11-05 12:01:59,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2021-11-05 12:01:59,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 433. [2021-11-05 12:01:59,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 413 states have (on average 1.3026634382566586) internal successors, (538), 432 states have internal predecessors, (538), 0 states have call successors, (0), 0 states 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 12:01:59,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 538 transitions. [2021-11-05 12:01:59,879 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 538 transitions. Word has length 53 [2021-11-05 12:01:59,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:01:59,880 INFO L470 AbstractCegarLoop]: Abstraction has 433 states and 538 transitions. [2021-11-05 12:01:59,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:01:59,885 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 538 transitions. [2021-11-05 12:01:59,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-05 12:01:59,889 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:01:59,889 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] [2021-11-05 12:01:59,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 12:01:59,890 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:01:59,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:01:59,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1497261274, now seen corresponding path program 1 times [2021-11-05 12:01:59,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:01:59,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249044449] [2021-11-05 12:01:59,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:01:59,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:02:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:02:00,298 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 12:02:00,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:02:00,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249044449] [2021-11-05 12:02:00,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249044449] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:02:00,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:02:00,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:02:00,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020592593] [2021-11-05 12:02:00,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:02:00,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:02:00,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:02:00,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:02:00,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:02:00,303 INFO L87 Difference]: Start difference. First operand 433 states and 538 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:02:00,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:02:00,492 INFO L93 Difference]: Finished difference Result 819 states and 1016 transitions. [2021-11-05 12:02:00,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 12:02:00,493 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-05 12:02:00,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:02:00,495 INFO L225 Difference]: With dead ends: 819 [2021-11-05 12:02:00,495 INFO L226 Difference]: Without dead ends: 433 [2021-11-05 12:02:00,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.54ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:02:00,497 INFO L933 BasicCegarLoop]: 500 mSDtfsCounter, 465 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 156.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.49ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 172.17ms IncrementalHoareTripleChecker+Time [2021-11-05 12:02:00,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [465 Valid, 924 Invalid, 46 Unknown, 0 Unchecked, 2.49ms Time], IncrementalHoareTripleChecker [7 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 172.17ms Time] [2021-11-05 12:02:00,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2021-11-05 12:02:00,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2021-11-05 12:02:00,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 413 states have (on average 1.297820823244552) internal successors, (536), 432 states have internal predecessors, (536), 0 states have call successors, (0), 0 states 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 12:02:00,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 536 transitions. [2021-11-05 12:02:00,519 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 536 transitions. Word has length 53 [2021-11-05 12:02:00,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:02:00,520 INFO L470 AbstractCegarLoop]: Abstraction has 433 states and 536 transitions. [2021-11-05 12:02:00,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:02:00,520 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 536 transitions. [2021-11-05 12:02:00,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-05 12:02:00,521 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:02:00,522 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 12:02:00,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 12:02:00,522 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:02:00,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:02:00,523 INFO L85 PathProgramCache]: Analyzing trace with hash -98028523, now seen corresponding path program 1 times [2021-11-05 12:02:00,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:02:00,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082787185] [2021-11-05 12:02:00,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:02:00,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:02:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:02:00,985 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 12:02:00,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:02:00,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082787185] [2021-11-05 12:02:00,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082787185] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:02:00,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:02:00,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 12:02:00,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211332521] [2021-11-05 12:02:00,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:02:00,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 12:02:00,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:02:00,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 12:02:00,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:02:00,987 INFO L87 Difference]: Start difference. First operand 433 states and 536 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 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 12:02:01,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:02:01,490 INFO L93 Difference]: Finished difference Result 785 states and 968 transitions. [2021-11-05 12:02:01,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:02:01,491 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 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 12:02:01,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:02:01,493 INFO L225 Difference]: With dead ends: 785 [2021-11-05 12:02:01,493 INFO L226 Difference]: Without dead ends: 433 [2021-11-05 12:02:01,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 335.37ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:02:01,495 INFO L933 BasicCegarLoop]: 477 mSDtfsCounter, 1908 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 257.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1908 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.72ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 283.26ms IncrementalHoareTripleChecker+Time [2021-11-05 12:02:01,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1908 Valid, 983 Invalid, 75 Unknown, 0 Unchecked, 5.72ms Time], IncrementalHoareTripleChecker [19 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 283.26ms Time] [2021-11-05 12:02:01,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2021-11-05 12:02:01,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2021-11-05 12:02:01,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 413 states have (on average 1.2857142857142858) internal successors, (531), 432 states have internal predecessors, (531), 0 states have call successors, (0), 0 states 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 12:02:01,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 531 transitions. [2021-11-05 12:02:01,508 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 531 transitions. Word has length 55 [2021-11-05 12:02:01,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:02:01,508 INFO L470 AbstractCegarLoop]: Abstraction has 433 states and 531 transitions. [2021-11-05 12:02:01,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 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 12:02:01,509 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 531 transitions. [2021-11-05 12:02:01,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-05 12:02:01,509 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:02:01,510 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 12:02:01,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 12:02:01,510 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:02:01,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:02:01,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1918822000, now seen corresponding path program 1 times [2021-11-05 12:02:01,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:02:01,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421040797] [2021-11-05 12:02:01,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:02:01,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:02:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:02:02,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:02:02,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:02:02,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421040797] [2021-11-05 12:02:02,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421040797] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:02:02,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:02:02,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 12:02:02,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577768633] [2021-11-05 12:02:02,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:02:02,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 12:02:02,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:02:02,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 12:02:02,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:02:02,470 INFO L87 Difference]: Start difference. First operand 433 states and 531 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 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 12:02:04,536 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:02:06,638 WARN L515 Checker$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 12:02:08,735 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 12:02:11,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:02:11,404 INFO L93 Difference]: Finished difference Result 965 states and 1172 transitions. [2021-11-05 12:02:11,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 12:02:11,404 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 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 12:02:11,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:02:11,406 INFO L225 Difference]: With dead ends: 965 [2021-11-05 12:02:11,407 INFO L226 Difference]: Without dead ends: 625 [2021-11-05 12:02:11,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 566.16ms TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-11-05 12:02:11,408 INFO L933 BasicCegarLoop]: 453 mSDtfsCounter, 803 mSDsluCounter, 2006 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 21 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7942.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 2459 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.97ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8485.80ms IncrementalHoareTripleChecker+Time [2021-11-05 12:02:11,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [803 Valid, 2459 Invalid, 499 Unknown, 0 Unchecked, 13.97ms Time], IncrementalHoareTripleChecker [21 Valid, 475 Invalid, 3 Unknown, 0 Unchecked, 8485.80ms Time] [2021-11-05 12:02:11,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2021-11-05 12:02:11,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 478. [2021-11-05 12:02:11,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 458 states have (on average 1.2816593886462881) internal successors, (587), 477 states have internal predecessors, (587), 0 states have call successors, (0), 0 states 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 12:02:11,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 587 transitions. [2021-11-05 12:02:11,420 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 587 transitions. Word has length 57 [2021-11-05 12:02:11,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:02:11,420 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 587 transitions. [2021-11-05 12:02:11,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 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 12:02:11,421 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 587 transitions. [2021-11-05 12:02:11,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-05 12:02:11,421 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:02:11,421 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 12:02:11,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 12:02:11,422 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:02:11,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:02:11,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1112224199, now seen corresponding path program 1 times [2021-11-05 12:02:11,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:02:11,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389346267] [2021-11-05 12:02:11,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:02:11,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:02:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:02:11,709 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 12:02:11,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:02:11,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389346267] [2021-11-05 12:02:11,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389346267] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:02:11,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:02:11,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:02:11,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571223602] [2021-11-05 12:02:11,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:02:11,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:02:11,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:02:11,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:02:11,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:02:11,710 INFO L87 Difference]: Start difference. First operand 478 states and 587 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 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 12:02:11,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:02:11,926 INFO L93 Difference]: Finished difference Result 1004 states and 1218 transitions. [2021-11-05 12:02:11,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 12:02:11,926 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 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 12:02:11,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:02:11,929 INFO L225 Difference]: With dead ends: 1004 [2021-11-05 12:02:11,929 INFO L226 Difference]: Without dead ends: 942 [2021-11-05 12:02:11,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 130.17ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:02:11,930 INFO L933 BasicCegarLoop]: 777 mSDtfsCounter, 611 mSDsluCounter, 2197 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 101.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 2974 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.95ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 108.76ms IncrementalHoareTripleChecker+Time [2021-11-05 12:02:11,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [611 Valid, 2974 Invalid, 41 Unknown, 0 Unchecked, 2.95ms Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 108.76ms Time] [2021-11-05 12:02:11,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2021-11-05 12:02:11,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 480. [2021-11-05 12:02:11,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 460 states have (on average 1.2804347826086957) internal successors, (589), 479 states have internal predecessors, (589), 0 states have call successors, (0), 0 states 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 12:02:11,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 589 transitions. [2021-11-05 12:02:11,944 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 589 transitions. Word has length 57 [2021-11-05 12:02:11,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:02:11,946 INFO L470 AbstractCegarLoop]: Abstraction has 480 states and 589 transitions. [2021-11-05 12:02:11,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 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 12:02:11,946 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 589 transitions. [2021-11-05 12:02:11,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-05 12:02:11,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:02:11,947 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 12:02:11,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 12:02:11,947 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:02:11,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:02:11,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1112235122, now seen corresponding path program 1 times [2021-11-05 12:02:11,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:02:11,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419347833] [2021-11-05 12:02:11,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:02:11,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:02:16,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:02:16,515 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 12:02:16,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:02:16,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419347833] [2021-11-05 12:02:16,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419347833] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:02:16,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:02:16,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 12:02:16,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408196065] [2021-11-05 12:02:16,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:02:16,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 12:02:16,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:02:16,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 12:02:16,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:02:16,516 INFO L87 Difference]: Start difference. First operand 480 states and 589 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 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 12:02:18,577 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 12:02:20,690 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 12:02:22,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:02:22,826 INFO L93 Difference]: Finished difference Result 990 states and 1222 transitions. [2021-11-05 12:02:22,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 12:02:22,829 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 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 12:02:22,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:02:22,831 INFO L225 Difference]: With dead ends: 990 [2021-11-05 12:02:22,831 INFO L226 Difference]: Without dead ends: 536 [2021-11-05 12:02:22,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 833.90ms TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2021-11-05 12:02:22,832 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 1235 mSDsluCounter, 1705 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 24 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5323.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 2229 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.62ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5677.32ms IncrementalHoareTripleChecker+Time [2021-11-05 12:02:22,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1235 Valid, 2229 Invalid, 366 Unknown, 0 Unchecked, 12.62ms Time], IncrementalHoareTripleChecker [24 Valid, 340 Invalid, 2 Unknown, 0 Unchecked, 5677.32ms Time] [2021-11-05 12:02:22,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2021-11-05 12:02:22,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 478. [2021-11-05 12:02:22,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 458 states have (on average 1.279475982532751) internal successors, (586), 477 states have internal predecessors, (586), 0 states have call successors, (0), 0 states 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 12:02:22,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 586 transitions. [2021-11-05 12:02:22,853 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 586 transitions. Word has length 57 [2021-11-05 12:02:22,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:02:22,853 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 586 transitions. [2021-11-05 12:02:22,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 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 12:02:22,853 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 586 transitions. [2021-11-05 12:02:22,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-05 12:02:22,854 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:02:22,854 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] [2021-11-05 12:02:22,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 12:02:22,855 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:02:22,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:02:22,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1723970498, now seen corresponding path program 1 times [2021-11-05 12:02:22,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:02:22,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387159257] [2021-11-05 12:02:22,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:02:22,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:02:23,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:02:24,082 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 12:02:24,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:02:24,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387159257] [2021-11-05 12:02:24,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387159257] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:02:24,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:02:24,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 12:02:24,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427400179] [2021-11-05 12:02:24,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:02:24,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 12:02:24,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:02:24,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 12:02:24,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:02:24,084 INFO L87 Difference]: Start difference. First operand 478 states and 586 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 12:02:26,162 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:02:28,303 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:02:30,409 WARN L515 Checker$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 12:02:32,509 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 12:02:35,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:02:35,275 INFO L93 Difference]: Finished difference Result 952 states and 1154 transitions. [2021-11-05 12:02:35,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 12:02:35,276 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2021-11-05 12:02:35,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:02:35,278 INFO L225 Difference]: With dead ends: 952 [2021-11-05 12:02:35,278 INFO L226 Difference]: Without dead ends: 950 [2021-11-05 12:02:35,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 915.63ms TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2021-11-05 12:02:35,279 INFO L933 BasicCegarLoop]: 651 mSDtfsCounter, 2458 mSDsluCounter, 1971 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 68 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9926.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2458 SdHoareTripleChecker+Valid, 2622 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.33ms SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10582.53ms IncrementalHoareTripleChecker+Time [2021-11-05 12:02:35,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2458 Valid, 2622 Invalid, 572 Unknown, 0 Unchecked, 13.33ms Time], IncrementalHoareTripleChecker [68 Valid, 500 Invalid, 4 Unknown, 0 Unchecked, 10582.53ms Time] [2021-11-05 12:02:35,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2021-11-05 12:02:35,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 631. [2021-11-05 12:02:35,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 611 states have (on average 1.2896890343698855) internal successors, (788), 630 states have internal predecessors, (788), 0 states have call successors, (0), 0 states 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 12:02:35,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 788 transitions. [2021-11-05 12:02:35,302 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 788 transitions. Word has length 61 [2021-11-05 12:02:35,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:02:35,304 INFO L470 AbstractCegarLoop]: Abstraction has 631 states and 788 transitions. [2021-11-05 12:02:35,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 12:02:35,304 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 788 transitions. [2021-11-05 12:02:35,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-05 12:02:35,304 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:02:35,305 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] [2021-11-05 12:02:35,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 12:02:35,305 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:02:35,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:02:35,306 INFO L85 PathProgramCache]: Analyzing trace with hash 419396586, now seen corresponding path program 1 times [2021-11-05 12:02:35,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:02:35,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279627696] [2021-11-05 12:02:35,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:02:35,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:02:35,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:02:35,967 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 12:02:35,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:02:35,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279627696] [2021-11-05 12:02:35,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279627696] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:02:35,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:02:35,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 12:02:35,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051339250] [2021-11-05 12:02:35,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:02:35,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 12:02:35,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:02:35,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 12:02:35,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:02:35,969 INFO L87 Difference]: Start difference. First operand 631 states and 788 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:02:37,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:02:37,395 INFO L93 Difference]: Finished difference Result 1475 states and 1823 transitions. [2021-11-05 12:02:37,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 12:02:37,396 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-05 12:02:37,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:02:37,398 INFO L225 Difference]: With dead ends: 1475 [2021-11-05 12:02:37,398 INFO L226 Difference]: Without dead ends: 857 [2021-11-05 12:02:37,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 304.07ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:02:37,400 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 235 mSDsluCounter, 2434 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1134.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 2978 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.64ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1219.36ms IncrementalHoareTripleChecker+Time [2021-11-05 12:02:37,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 2978 Invalid, 362 Unknown, 0 Unchecked, 6.64ms Time], IncrementalHoareTripleChecker [44 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 1219.36ms Time] [2021-11-05 12:02:37,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2021-11-05 12:02:37,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 631. [2021-11-05 12:02:37,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 611 states have (on average 1.2847790507364976) internal successors, (785), 630 states have internal predecessors, (785), 0 states have call successors, (0), 0 states 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 12:02:37,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 785 transitions. [2021-11-05 12:02:37,426 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 785 transitions. Word has length 64 [2021-11-05 12:02:37,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:02:37,426 INFO L470 AbstractCegarLoop]: Abstraction has 631 states and 785 transitions. [2021-11-05 12:02:37,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:02:37,427 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 785 transitions. [2021-11-05 12:02:37,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-05 12:02:37,429 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:02:37,430 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] [2021-11-05 12:02:37,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 12:02:37,430 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:02:37,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:02:37,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1217407611, now seen corresponding path program 1 times [2021-11-05 12:02:37,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:02:37,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329215330] [2021-11-05 12:02:37,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:02:37,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:02:39,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:02:40,338 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 12:02:40,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:02:40,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329215330] [2021-11-05 12:02:40,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329215330] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:02:40,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:02:40,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 12:02:40,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857727139] [2021-11-05 12:02:40,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:02:40,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 12:02:40,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:02:40,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 12:02:40,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:02:40,340 INFO L87 Difference]: Start difference. First operand 631 states and 785 transitions. Second operand has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 12:02:42,401 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 12:02:44,487 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:02:46,605 WARN L515 Checker$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 12:02:48,711 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:02:50,795 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:02:52,887 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:02:55,014 WARN L515 Checker$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 12:02:57,150 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 12:03:03,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:03:03,106 INFO L93 Difference]: Finished difference Result 946 states and 1145 transitions. [2021-11-05 12:03:03,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-05 12:03:03,106 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2021-11-05 12:03:03,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:03:03,109 INFO L225 Difference]: With dead ends: 946 [2021-11-05 12:03:03,109 INFO L226 Difference]: Without dead ends: 944 [2021-11-05 12:03:03,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 2066.93ms TimeCoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2021-11-05 12:03:03,110 INFO L933 BasicCegarLoop]: 621 mSDtfsCounter, 1852 mSDsluCounter, 3135 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 60 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19880.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1852 SdHoareTripleChecker+Valid, 3756 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.63ms SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21010.34ms IncrementalHoareTripleChecker+Time [2021-11-05 12:03:03,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1852 Valid, 3756 Invalid, 1086 Unknown, 0 Unchecked, 20.63ms Time], IncrementalHoareTripleChecker [60 Valid, 1018 Invalid, 8 Unknown, 0 Unchecked, 21010.34ms Time] [2021-11-05 12:03:03,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2021-11-05 12:03:03,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 639. [2021-11-05 12:03:03,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 619 states have (on average 1.2843295638126009) internal successors, (795), 638 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 12:03:03,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 795 transitions. [2021-11-05 12:03:03,130 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 795 transitions. Word has length 66 [2021-11-05 12:03:03,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:03:03,130 INFO L470 AbstractCegarLoop]: Abstraction has 639 states and 795 transitions. [2021-11-05 12:03:03,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 12:03:03,130 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 795 transitions. [2021-11-05 12:03:03,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-05 12:03:03,131 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:03:03,131 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 12:03:03,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 12:03:03,131 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:03:03,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:03:03,132 INFO L85 PathProgramCache]: Analyzing trace with hash 4892174, now seen corresponding path program 1 times [2021-11-05 12:03:03,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:03:03,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236150895] [2021-11-05 12:03:03,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:03:03,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:03:03,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:03:03,366 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 12:03:03,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:03:03,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236150895] [2021-11-05 12:03:03,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236150895] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:03:03,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:03:03,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:03:03,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060301723] [2021-11-05 12:03:03,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:03:03,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:03:03,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:03:03,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:03:03,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:03:03,368 INFO L87 Difference]: Start difference. First operand 639 states and 795 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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 12:03:03,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:03:03,726 INFO L93 Difference]: Finished difference Result 867 states and 1071 transitions. [2021-11-05 12:03:03,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:03:03,727 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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 12:03:03,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:03:03,729 INFO L225 Difference]: With dead ends: 867 [2021-11-05 12:03:03,729 INFO L226 Difference]: Without dead ends: 639 [2021-11-05 12:03:03,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 130.25ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:03:03,730 INFO L933 BasicCegarLoop]: 464 mSDtfsCounter, 998 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 219.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.10ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 248.16ms IncrementalHoareTripleChecker+Time [2021-11-05 12:03:03,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [998 Valid, 852 Invalid, 76 Unknown, 0 Unchecked, 2.10ms Time], IncrementalHoareTripleChecker [9 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 248.16ms Time] [2021-11-05 12:03:03,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-11-05 12:03:03,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 639. [2021-11-05 12:03:03,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 619 states have (on average 1.2730210016155088) internal successors, (788), 638 states have internal predecessors, (788), 0 states have call successors, (0), 0 states 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 12:03:03,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 788 transitions. [2021-11-05 12:03:03,747 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 788 transitions. Word has length 67 [2021-11-05 12:03:03,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:03:03,748 INFO L470 AbstractCegarLoop]: Abstraction has 639 states and 788 transitions. [2021-11-05 12:03:03,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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 12:03:03,748 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 788 transitions. [2021-11-05 12:03:03,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-05 12:03:03,748 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:03:03,749 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 12:03:03,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-05 12:03:03,750 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:03:03,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:03:03,750 INFO L85 PathProgramCache]: Analyzing trace with hash -344410535, now seen corresponding path program 1 times [2021-11-05 12:03:03,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:03:03,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910083770] [2021-11-05 12:03:03,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:03:03,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:03:03,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:03:04,227 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 12:03:04,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:03:04,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910083770] [2021-11-05 12:03:04,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910083770] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:03:04,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:03:04,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 12:03:04,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689596460] [2021-11-05 12:03:04,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:03:04,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 12:03:04,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:03:04,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 12:03:04,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:03:04,229 INFO L87 Difference]: Start difference. First operand 639 states and 788 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 12:03:05,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:03:05,511 INFO L93 Difference]: Finished difference Result 1343 states and 1635 transitions. [2021-11-05 12:03:05,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 12:03:05,512 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 12:03:05,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:03:05,514 INFO L225 Difference]: With dead ends: 1343 [2021-11-05 12:03:05,514 INFO L226 Difference]: Without dead ends: 775 [2021-11-05 12:03:05,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 241.98ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:03:05,516 INFO L933 BasicCegarLoop]: 578 mSDtfsCounter, 165 mSDsluCounter, 2549 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1053.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 3127 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.04ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1120.71ms IncrementalHoareTripleChecker+Time [2021-11-05 12:03:05,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 3127 Invalid, 354 Unknown, 0 Unchecked, 6.04ms Time], IncrementalHoareTripleChecker [40 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 1120.71ms Time] [2021-11-05 12:03:05,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2021-11-05 12:03:05,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 639. [2021-11-05 12:03:05,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 619 states have (on average 1.2681744749596122) internal successors, (785), 638 states have internal predecessors, (785), 0 states have call successors, (0), 0 states 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 12:03:05,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 785 transitions. [2021-11-05 12:03:05,538 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 785 transitions. Word has length 67 [2021-11-05 12:03:05,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:03:05,538 INFO L470 AbstractCegarLoop]: Abstraction has 639 states and 785 transitions. [2021-11-05 12:03:05,538 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 12:03:05,539 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 785 transitions. [2021-11-05 12:03:05,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-05 12:03:05,539 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:03:05,539 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] [2021-11-05 12:03:05,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-05 12:03:05,540 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:03:05,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:03:05,540 INFO L85 PathProgramCache]: Analyzing trace with hash 2005786055, now seen corresponding path program 1 times [2021-11-05 12:03:05,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:03:05,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071674829] [2021-11-05 12:03:05,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:03:05,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:03:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:03:06,377 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 12:03:06,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:03:06,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071674829] [2021-11-05 12:03:06,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071674829] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:03:06,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:03:06,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 12:03:06,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26194069] [2021-11-05 12:03:06,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:03:06,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 12:03:06,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:03:06,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 12:03:06,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:03:06,379 INFO L87 Difference]: Start difference. First operand 639 states and 785 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 12:03:08,454 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:03:10,552 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:03:12,666 WARN L515 Checker$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 12:03:17,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:03:17,974 INFO L93 Difference]: Finished difference Result 1310 states and 1610 transitions. [2021-11-05 12:03:17,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-05 12:03:17,974 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2021-11-05 12:03:17,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:03:17,978 INFO L225 Difference]: With dead ends: 1310 [2021-11-05 12:03:17,978 INFO L226 Difference]: Without dead ends: 1242 [2021-11-05 12:03:17,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1234.86ms TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2021-11-05 12:03:17,979 INFO L933 BasicCegarLoop]: 772 mSDtfsCounter, 1612 mSDsluCounter, 2529 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 46 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9896.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1612 SdHoareTripleChecker+Valid, 3301 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.36ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10519.69ms IncrementalHoareTripleChecker+Time [2021-11-05 12:03:17,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1612 Valid, 3301 Invalid, 1099 Unknown, 0 Unchecked, 18.36ms Time], IncrementalHoareTripleChecker [46 Valid, 1050 Invalid, 3 Unknown, 0 Unchecked, 10519.69ms Time] [2021-11-05 12:03:17,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2021-11-05 12:03:18,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 854. [2021-11-05 12:03:18,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 834 states have (on average 1.2709832134292567) internal successors, (1060), 853 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states 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 12:03:18,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1060 transitions. [2021-11-05 12:03:18,004 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1060 transitions. Word has length 68 [2021-11-05 12:03:18,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:03:18,004 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 1060 transitions. [2021-11-05 12:03:18,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 12:03:18,005 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1060 transitions. [2021-11-05 12:03:18,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-05 12:03:18,005 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:03:18,005 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 12:03:18,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-05 12:03:18,006 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:03:18,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:03:18,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1029644236, now seen corresponding path program 1 times [2021-11-05 12:03:18,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:03:18,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635574675] [2021-11-05 12:03:18,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:03:18,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:03:18,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:03:18,427 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 12:03:18,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:03:18,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635574675] [2021-11-05 12:03:18,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635574675] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:03:18,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:03:18,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:03:18,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295625799] [2021-11-05 12:03:18,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:03:18,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:03:18,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:03:18,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:03:18,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:03:18,428 INFO L87 Difference]: Start difference. First operand 854 states and 1060 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 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 12:03:20,494 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:03:22,588 WARN L515 Checker$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 12:03:24,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:03:24,527 INFO L93 Difference]: Finished difference Result 2099 states and 2579 transitions. [2021-11-05 12:03:24,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:03:24,528 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 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 12:03:24,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:03:24,532 INFO L225 Difference]: With dead ends: 2099 [2021-11-05 12:03:24,532 INFO L226 Difference]: Without dead ends: 1336 [2021-11-05 12:03:24,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 117.28ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:03:24,534 INFO L933 BasicCegarLoop]: 741 mSDtfsCounter, 398 mSDsluCounter, 1363 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 31 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5646.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 2104 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.01ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5965.70ms IncrementalHoareTripleChecker+Time [2021-11-05 12:03:24,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [398 Valid, 2104 Invalid, 441 Unknown, 0 Unchecked, 8.01ms Time], IncrementalHoareTripleChecker [31 Valid, 408 Invalid, 2 Unknown, 0 Unchecked, 5965.70ms Time] [2021-11-05 12:03:24,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2021-11-05 12:03:24,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 854. [2021-11-05 12:03:24,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 834 states have (on average 1.2517985611510791) internal successors, (1044), 853 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states 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 12:03:24,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1044 transitions. [2021-11-05 12:03:24,611 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1044 transitions. Word has length 69 [2021-11-05 12:03:24,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:03:24,611 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 1044 transitions. [2021-11-05 12:03:24,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 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 12:03:24,612 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1044 transitions. [2021-11-05 12:03:24,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-05 12:03:24,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:03:24,613 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 12:03:24,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-05 12:03:24,613 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:03:24,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:03:24,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1021339762, now seen corresponding path program 1 times [2021-11-05 12:03:24,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:03:24,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117960250] [2021-11-05 12:03:24,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:03:24,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:03:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:03:25,454 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 12:03:25,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:03:25,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117960250] [2021-11-05 12:03:25,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117960250] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:03:25,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:03:25,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 12:03:25,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690173446] [2021-11-05 12:03:25,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:03:25,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 12:03:25,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:03:25,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 12:03:25,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:03:25,456 INFO L87 Difference]: Start difference. First operand 854 states and 1044 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 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 12:03:27,515 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:03:29,630 WARN L515 Checker$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 12:03:34,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:03:34,239 INFO L93 Difference]: Finished difference Result 1709 states and 2066 transitions. [2021-11-05 12:03:34,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 12:03:34,240 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 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 12:03:34,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:03:34,242 INFO L225 Difference]: With dead ends: 1709 [2021-11-05 12:03:34,242 INFO L226 Difference]: Without dead ends: 1023 [2021-11-05 12:03:34,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 747.85ms TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-11-05 12:03:34,245 INFO L933 BasicCegarLoop]: 759 mSDtfsCounter, 1159 mSDsluCounter, 3462 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 38 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7738.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1159 SdHoareTripleChecker+Valid, 4221 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.04ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8237.08ms IncrementalHoareTripleChecker+Time [2021-11-05 12:03:34,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1159 Valid, 4221 Invalid, 1053 Unknown, 0 Unchecked, 17.04ms Time], IncrementalHoareTripleChecker [38 Valid, 1013 Invalid, 2 Unknown, 0 Unchecked, 8237.08ms Time] [2021-11-05 12:03:34,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2021-11-05 12:03:34,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 898. [2021-11-05 12:03:34,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 898 states, 878 states have (on average 1.2403189066059226) internal successors, (1089), 897 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states 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 12:03:34,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 1089 transitions. [2021-11-05 12:03:34,274 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 1089 transitions. Word has length 69 [2021-11-05 12:03:34,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:03:34,274 INFO L470 AbstractCegarLoop]: Abstraction has 898 states and 1089 transitions. [2021-11-05 12:03:34,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 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 12:03:34,275 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 1089 transitions. [2021-11-05 12:03:34,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-05 12:03:34,275 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:03:34,276 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] [2021-11-05 12:03:34,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-05 12:03:34,276 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:03:34,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:03:34,276 INFO L85 PathProgramCache]: Analyzing trace with hash 38573891, now seen corresponding path program 1 times [2021-11-05 12:03:34,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:03:34,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043637422] [2021-11-05 12:03:34,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:03:34,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:03:34,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:03:34,645 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 12:03:34,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:03:34,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043637422] [2021-11-05 12:03:34,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043637422] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:03:34,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:03:34,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 12:03:34,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403540286] [2021-11-05 12:03:34,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:03:34,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 12:03:34,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:03:34,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 12:03:34,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:03:34,647 INFO L87 Difference]: Start difference. First operand 898 states and 1089 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:03:35,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:03:35,620 INFO L93 Difference]: Finished difference Result 1398 states and 1667 transitions. [2021-11-05 12:03:35,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:03:35,620 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-05 12:03:35,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:03:35,624 INFO L225 Difference]: With dead ends: 1398 [2021-11-05 12:03:35,624 INFO L226 Difference]: Without dead ends: 1388 [2021-11-05 12:03:35,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 206.25ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:03:35,626 INFO L933 BasicCegarLoop]: 472 mSDtfsCounter, 489 mSDsluCounter, 1656 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 744.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 2128 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.30ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 818.41ms IncrementalHoareTripleChecker+Time [2021-11-05 12:03:35,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [489 Valid, 2128 Invalid, 246 Unknown, 0 Unchecked, 10.30ms Time], IncrementalHoareTripleChecker [36 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 818.41ms Time] [2021-11-05 12:03:35,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1388 states. [2021-11-05 12:03:35,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1388 to 946. [2021-11-05 12:03:35,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 926 states have (on average 1.2278617710583153) internal successors, (1137), 945 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states 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 12:03:35,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1137 transitions. [2021-11-05 12:03:35,741 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1137 transitions. Word has length 73 [2021-11-05 12:03:35,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:03:35,742 INFO L470 AbstractCegarLoop]: Abstraction has 946 states and 1137 transitions. [2021-11-05 12:03:35,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:03:35,742 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1137 transitions. [2021-11-05 12:03:35,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-05 12:03:35,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:03:35,743 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] [2021-11-05 12:03:35,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-05 12:03:35,743 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:03:35,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:03:35,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1888682136, now seen corresponding path program 1 times [2021-11-05 12:03:35,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:03:35,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363346590] [2021-11-05 12:03:35,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:03:35,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:03:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:03:36,436 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 12:03:36,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:03:36,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363346590] [2021-11-05 12:03:36,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363346590] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:03:36,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:03:36,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 12:03:36,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092688195] [2021-11-05 12:03:36,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:03:36,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 12:03:36,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:03:36,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 12:03:36,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:03:36,438 INFO L87 Difference]: Start difference. First operand 946 states and 1137 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:03:38,516 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:03:40,692 WARN L515 Checker$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 12:03:42,824 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:03:44,913 WARN L515 Checker$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 12:03:50,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:03:50,430 INFO L93 Difference]: Finished difference Result 2554 states and 3065 transitions. [2021-11-05 12:03:50,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-05 12:03:50,431 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-05 12:03:50,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:03:50,435 INFO L225 Difference]: With dead ends: 2554 [2021-11-05 12:03:50,435 INFO L226 Difference]: Without dead ends: 1602 [2021-11-05 12:03:50,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1122.23ms TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-11-05 12:03:50,439 INFO L933 BasicCegarLoop]: 617 mSDtfsCounter, 573 mSDsluCounter, 2634 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 93 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12233.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 3251 SdHoareTripleChecker+Invalid, 1167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.81ms SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12966.45ms IncrementalHoareTripleChecker+Time [2021-11-05 12:03:50,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [573 Valid, 3251 Invalid, 1167 Unknown, 0 Unchecked, 16.81ms Time], IncrementalHoareTripleChecker [93 Valid, 1070 Invalid, 4 Unknown, 0 Unchecked, 12966.45ms Time] [2021-11-05 12:03:50,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1602 states. [2021-11-05 12:03:50,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1602 to 1006. [2021-11-05 12:03:50,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 986 states have (on average 1.218052738336714) internal successors, (1201), 1005 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states 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 12:03:50,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1201 transitions. [2021-11-05 12:03:50,470 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1201 transitions. Word has length 74 [2021-11-05 12:03:50,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:03:50,471 INFO L470 AbstractCegarLoop]: Abstraction has 1006 states and 1201 transitions. [2021-11-05 12:03:50,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:03:50,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1201 transitions. [2021-11-05 12:03:50,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-05 12:03:50,472 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:03:50,472 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] [2021-11-05 12:03:50,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-05 12:03:50,472 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:03:50,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:03:50,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1494315350, now seen corresponding path program 1 times [2021-11-05 12:03:50,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:03:50,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236771079] [2021-11-05 12:03:50,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:03:50,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:03:50,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:03:51,803 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 12:03:51,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:03:51,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236771079] [2021-11-05 12:03:51,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236771079] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:03:51,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:03:51,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-05 12:03:51,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605742890] [2021-11-05 12:03:51,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:03:51,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-05 12:03:51,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:03:51,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-05 12:03:51,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-05 12:03:51,805 INFO L87 Difference]: Start difference. First operand 1006 states and 1201 transitions. Second operand has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 13 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:03:53,866 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:03:55,993 WARN L515 Checker$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 12:03:58,081 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:04:00,191 WARN L515 Checker$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 12:04:02,258 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:04:08,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:04:08,613 INFO L93 Difference]: Finished difference Result 2998 states and 3535 transitions. [2021-11-05 12:04:08,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-05 12:04:08,613 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 13 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-05 12:04:08,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:04:08,620 INFO L225 Difference]: With dead ends: 2998 [2021-11-05 12:04:08,621 INFO L226 Difference]: Without dead ends: 2880 [2021-11-05 12:04:08,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 2057.97ms TimeCoverageRelationStatistics Valid=277, Invalid=779, Unknown=0, NotChecked=0, Total=1056 [2021-11-05 12:04:08,622 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 5116 mSDsluCounter, 3310 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 188 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14157.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5116 SdHoareTripleChecker+Valid, 3900 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.87ms SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14980.76ms IncrementalHoareTripleChecker+Time [2021-11-05 12:04:08,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5116 Valid, 3900 Invalid, 1308 Unknown, 0 Unchecked, 25.87ms Time], IncrementalHoareTripleChecker [188 Valid, 1115 Invalid, 5 Unknown, 0 Unchecked, 14980.76ms Time] [2021-11-05 12:04:08,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2021-11-05 12:04:08,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 1050. [2021-11-05 12:04:08,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1050 states, 1030 states have (on average 1.2135922330097086) internal successors, (1250), 1049 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states 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 12:04:08,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1250 transitions. [2021-11-05 12:04:08,666 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1250 transitions. Word has length 74 [2021-11-05 12:04:08,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:04:08,666 INFO L470 AbstractCegarLoop]: Abstraction has 1050 states and 1250 transitions. [2021-11-05 12:04:08,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 13 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:04:08,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1250 transitions. [2021-11-05 12:04:08,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-05 12:04:08,667 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:04:08,667 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] [2021-11-05 12:04:08,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-05 12:04:08,668 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:04:08,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:04:08,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1025517010, now seen corresponding path program 1 times [2021-11-05 12:04:08,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:04:08,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410971718] [2021-11-05 12:04:08,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:04:08,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:04:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:04:16,077 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 12:04:16,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:04:16,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410971718] [2021-11-05 12:04:16,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410971718] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:04:16,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:04:16,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 12:04:16,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195637359] [2021-11-05 12:04:16,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:04:16,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 12:04:16,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:04:16,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 12:04:16,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:04:16,079 INFO L87 Difference]: Start difference. First operand 1050 states and 1250 transitions. Second operand has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:04:18,139 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 12:04:20,251 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:04:22,336 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:04:25,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:04:25,912 INFO L93 Difference]: Finished difference Result 1393 states and 1634 transitions. [2021-11-05 12:04:25,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-05 12:04:25,913 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-05 12:04:25,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:04:25,916 INFO L225 Difference]: With dead ends: 1393 [2021-11-05 12:04:25,917 INFO L226 Difference]: Without dead ends: 1391 [2021-11-05 12:04:25,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1805.67ms TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2021-11-05 12:04:25,918 INFO L933 BasicCegarLoop]: 619 mSDtfsCounter, 2708 mSDsluCounter, 2206 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 102 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8117.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2708 SdHoareTripleChecker+Valid, 2825 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.70ms SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8536.03ms IncrementalHoareTripleChecker+Time [2021-11-05 12:04:25,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2708 Valid, 2825 Invalid, 665 Unknown, 0 Unchecked, 15.70ms Time], IncrementalHoareTripleChecker [102 Valid, 560 Invalid, 3 Unknown, 0 Unchecked, 8536.03ms Time] [2021-11-05 12:04:25,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2021-11-05 12:04:25,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1050. [2021-11-05 12:04:25,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1050 states, 1030 states have (on average 1.2116504854368932) internal successors, (1248), 1049 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states 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 12:04:25,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1248 transitions. [2021-11-05 12:04:25,977 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1248 transitions. Word has length 74 [2021-11-05 12:04:25,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:04:25,977 INFO L470 AbstractCegarLoop]: Abstraction has 1050 states and 1248 transitions. [2021-11-05 12:04:25,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:04:25,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1248 transitions. [2021-11-05 12:04:25,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-05 12:04:25,978 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:04:25,978 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 12:04:25,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-05 12:04:25,979 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:04:25,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:04:25,979 INFO L85 PathProgramCache]: Analyzing trace with hash 44168579, now seen corresponding path program 1 times [2021-11-05 12:04:25,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:04:25,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184320986] [2021-11-05 12:04:25,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:04:25,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:04:27,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:04:27,929 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 12:04:27,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:04:27,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184320986] [2021-11-05 12:04:27,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184320986] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:04:27,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:04:27,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 12:04:27,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332477968] [2021-11-05 12:04:27,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:04:27,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 12:04:27,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:04:27,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 12:04:27,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:04:27,932 INFO L87 Difference]: Start difference. First operand 1050 states and 1248 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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 12:04:29,993 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:04:32,108 WARN L515 Checker$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 12:04:33,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:04:33,859 INFO L93 Difference]: Finished difference Result 2123 states and 2524 transitions. [2021-11-05 12:04:33,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 12:04:33,861 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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 12:04:33,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:04:33,864 INFO L225 Difference]: With dead ends: 2123 [2021-11-05 12:04:33,864 INFO L226 Difference]: Without dead ends: 1228 [2021-11-05 12:04:33,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 488.67ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-05 12:04:33,866 INFO L933 BasicCegarLoop]: 459 mSDtfsCounter, 784 mSDsluCounter, 2115 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5258.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 2574 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.29ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5560.21ms IncrementalHoareTripleChecker+Time [2021-11-05 12:04:33,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [784 Valid, 2574 Invalid, 379 Unknown, 0 Unchecked, 7.29ms Time], IncrementalHoareTripleChecker [8 Valid, 369 Invalid, 2 Unknown, 0 Unchecked, 5560.21ms Time] [2021-11-05 12:04:33,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2021-11-05 12:04:33,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 1192. [2021-11-05 12:04:33,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1192 states, 1172 states have (on average 1.204778156996587) internal successors, (1412), 1191 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states 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 12:04:33,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1412 transitions. [2021-11-05 12:04:33,902 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1412 transitions. Word has length 75 [2021-11-05 12:04:33,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:04:33,903 INFO L470 AbstractCegarLoop]: Abstraction has 1192 states and 1412 transitions. [2021-11-05 12:04:33,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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 12:04:33,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1412 transitions. [2021-11-05 12:04:33,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-05 12:04:33,904 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:04:33,904 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 12:04:33,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-05 12:04:33,904 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:04:33,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:04:33,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1660405051, now seen corresponding path program 1 times [2021-11-05 12:04:33,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:04:33,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364995136] [2021-11-05 12:04:33,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:04:33,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:04:34,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:04:34,291 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 12:04:34,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:04:34,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364995136] [2021-11-05 12:04:34,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364995136] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:04:34,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:04:34,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:04:34,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690599174] [2021-11-05 12:04:34,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:04:34,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:04:34,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:04:34,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:04:34,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:04:34,293 INFO L87 Difference]: Start difference. First operand 1192 states and 1412 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 12:04:36,349 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 12:04:38,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:04:38,065 INFO L93 Difference]: Finished difference Result 2954 states and 3478 transitions. [2021-11-05 12:04:38,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:04:38,066 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 12:04:38,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:04:38,070 INFO L225 Difference]: With dead ends: 2954 [2021-11-05 12:04:38,070 INFO L226 Difference]: Without dead ends: 1773 [2021-11-05 12:04:38,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 124.53ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:04:38,072 INFO L933 BasicCegarLoop]: 510 mSDtfsCounter, 515 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3355.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 1654 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.34ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3613.45ms IncrementalHoareTripleChecker+Time [2021-11-05 12:04:38,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [515 Valid, 1654 Invalid, 453 Unknown, 0 Unchecked, 5.34ms Time], IncrementalHoareTripleChecker [30 Valid, 422 Invalid, 1 Unknown, 0 Unchecked, 3613.45ms Time] [2021-11-05 12:04:38,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1773 states. [2021-11-05 12:04:38,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1773 to 1190. [2021-11-05 12:04:38,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1190 states, 1170 states have (on average 1.1905982905982906) internal successors, (1393), 1189 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states 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 12:04:38,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1393 transitions. [2021-11-05 12:04:38,114 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1393 transitions. Word has length 77 [2021-11-05 12:04:38,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:04:38,114 INFO L470 AbstractCegarLoop]: Abstraction has 1190 states and 1393 transitions. [2021-11-05 12:04:38,114 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 12:04:38,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1393 transitions. [2021-11-05 12:04:38,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-05 12:04:38,115 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:04:38,116 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 12:04:38,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-05 12:04:38,116 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:04:38,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:04:38,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1954503875, now seen corresponding path program 1 times [2021-11-05 12:04:38,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:04:38,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49771979] [2021-11-05 12:04:38,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:04:38,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:04:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:04:40,105 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 12:04:40,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:04:40,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49771979] [2021-11-05 12:04:40,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49771979] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:04:40,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:04:40,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 12:04:40,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944595130] [2021-11-05 12:04:40,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:04:40,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 12:04:40,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:04:40,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 12:04:40,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:04:40,107 INFO L87 Difference]: Start difference. First operand 1190 states and 1393 transitions. Second operand has 11 states, 11 states have (on average 7.0) internal successors, (77), 11 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 12:04:42,161 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 12:04:44,255 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:04:46,343 WARN L515 Checker$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 12:04:48,434 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:04:50,489 WARN L515 Checker$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 12:04:54,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:04:54,426 INFO L93 Difference]: Finished difference Result 2320 states and 2690 transitions. [2021-11-05 12:04:54,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-05 12:04:54,427 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.0) internal successors, (77), 11 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 12:04:54,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:04:54,430 INFO L225 Difference]: With dead ends: 2320 [2021-11-05 12:04:54,430 INFO L226 Difference]: Without dead ends: 1581 [2021-11-05 12:04:54,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1616.74ms TimeCoverageRelationStatistics Valid=235, Invalid=635, Unknown=0, NotChecked=0, Total=870 [2021-11-05 12:04:54,432 INFO L933 BasicCegarLoop]: 657 mSDtfsCounter, 2955 mSDsluCounter, 2781 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 109 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12332.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2955 SdHoareTripleChecker+Valid, 3438 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.95ms SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12930.00ms IncrementalHoareTripleChecker+Time [2021-11-05 12:04:54,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2955 Valid, 3438 Invalid, 889 Unknown, 0 Unchecked, 15.95ms Time], IncrementalHoareTripleChecker [109 Valid, 775 Invalid, 5 Unknown, 0 Unchecked, 12930.00ms Time] [2021-11-05 12:04:54,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2021-11-05 12:04:54,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1172. [2021-11-05 12:04:54,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 1152 states have (on average 1.1883680555555556) internal successors, (1369), 1171 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states 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 12:04:54,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1369 transitions. [2021-11-05 12:04:54,494 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1369 transitions. Word has length 77 [2021-11-05 12:04:54,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:04:54,495 INFO L470 AbstractCegarLoop]: Abstraction has 1172 states and 1369 transitions. [2021-11-05 12:04:54,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.0) internal successors, (77), 11 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 12:04:54,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1369 transitions. [2021-11-05 12:04:54,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-05 12:04:54,496 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:04:54,496 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] [2021-11-05 12:04:54,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-05 12:04:54,496 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:04:54,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:04:54,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1314431118, now seen corresponding path program 1 times [2021-11-05 12:04:54,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:04:54,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949528699] [2021-11-05 12:04:54,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:04:54,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:04:55,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:04:56,926 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 12:04:56,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:04:56,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949528699] [2021-11-05 12:04:56,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949528699] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:04:56,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:04:56,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-05 12:04:56,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715522071] [2021-11-05 12:04:56,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:04:56,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-05 12:04:56,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:04:56,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-05 12:04:56,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-05 12:04:56,928 INFO L87 Difference]: Start difference. First operand 1172 states and 1369 transitions. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 12:04:58,987 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:05:01,109 WARN L515 Checker$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 12:05:03,201 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:05:05,288 WARN L515 Checker$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 12:05:07,401 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:05:09,483 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:05:11,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:05:11,960 INFO L93 Difference]: Finished difference Result 2619 states and 3052 transitions. [2021-11-05 12:05:11,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 12:05:11,961 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2021-11-05 12:05:11,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:05:11,965 INFO L225 Difference]: With dead ends: 2619 [2021-11-05 12:05:11,966 INFO L226 Difference]: Without dead ends: 1820 [2021-11-05 12:05:11,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1133.43ms TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2021-11-05 12:05:11,968 INFO L933 BasicCegarLoop]: 444 mSDtfsCounter, 978 mSDsluCounter, 3470 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 31 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13659.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 3914 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.69ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14351.83ms IncrementalHoareTripleChecker+Time [2021-11-05 12:05:11,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [978 Valid, 3914 Invalid, 579 Unknown, 0 Unchecked, 8.69ms Time], IncrementalHoareTripleChecker [31 Valid, 542 Invalid, 6 Unknown, 0 Unchecked, 14351.83ms Time] [2021-11-05 12:05:11,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1820 states. [2021-11-05 12:05:12,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1820 to 1461. [2021-11-05 12:05:12,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1461 states, 1441 states have (on average 1.1665510062456628) internal successors, (1681), 1460 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states 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 12:05:12,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 1681 transitions. [2021-11-05 12:05:12,026 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 1681 transitions. Word has length 83 [2021-11-05 12:05:12,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:05:12,026 INFO L470 AbstractCegarLoop]: Abstraction has 1461 states and 1681 transitions. [2021-11-05 12:05:12,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 12:05:12,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 1681 transitions. [2021-11-05 12:05:12,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-05 12:05:12,028 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:05:12,028 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] [2021-11-05 12:05:12,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-05 12:05:12,029 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:05:12,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:05:12,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1154252017, now seen corresponding path program 1 times [2021-11-05 12:05:12,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:05:12,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653124422] [2021-11-05 12:05:12,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:05:12,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:05:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:05:17,213 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 12:05:17,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:05:17,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653124422] [2021-11-05 12:05:17,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653124422] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:05:17,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:05:17,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 12:05:17,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251376578] [2021-11-05 12:05:17,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:05:17,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 12:05:17,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:05:17,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 12:05:17,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:05:17,215 INFO L87 Difference]: Start difference. First operand 1461 states and 1681 transitions. Second operand has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 12:05:19,274 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:05:21,436 WARN L515 Checker$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 12:05:23,536 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 12:05:25,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:05:25,897 INFO L93 Difference]: Finished difference Result 1999 states and 2289 transitions. [2021-11-05 12:05:25,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 12:05:25,897 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2021-11-05 12:05:25,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:05:25,901 INFO L225 Difference]: With dead ends: 1999 [2021-11-05 12:05:25,901 INFO L226 Difference]: Without dead ends: 1627 [2021-11-05 12:05:25,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 705.88ms TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-05 12:05:25,903 INFO L933 BasicCegarLoop]: 559 mSDtfsCounter, 2083 mSDsluCounter, 1647 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 64 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7742.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2083 SdHoareTripleChecker+Valid, 2206 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.09ms SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8217.34ms IncrementalHoareTripleChecker+Time [2021-11-05 12:05:25,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2083 Valid, 2206 Invalid, 616 Unknown, 0 Unchecked, 9.09ms Time], IncrementalHoareTripleChecker [64 Valid, 549 Invalid, 3 Unknown, 0 Unchecked, 8217.34ms Time] [2021-11-05 12:05:25,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2021-11-05 12:05:25,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 1401. [2021-11-05 12:05:25,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 1381 states have (on average 1.160753077480087) internal successors, (1603), 1400 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states 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 12:05:25,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 1603 transitions. [2021-11-05 12:05:25,974 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 1603 transitions. Word has length 84 [2021-11-05 12:05:25,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:05:25,974 INFO L470 AbstractCegarLoop]: Abstraction has 1401 states and 1603 transitions. [2021-11-05 12:05:25,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 12:05:25,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 1603 transitions. [2021-11-05 12:05:25,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-05 12:05:25,976 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:05:25,976 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] [2021-11-05 12:05:25,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-05 12:05:25,976 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:05:25,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:05:25,977 INFO L85 PathProgramCache]: Analyzing trace with hash -278758165, now seen corresponding path program 1 times [2021-11-05 12:05:25,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:05:25,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90805127] [2021-11-05 12:05:25,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:05:25,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:05:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:05:26,859 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 12:05:26,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:05:26,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90805127] [2021-11-05 12:05:26,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90805127] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:05:26,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:05:26,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-05 12:05:26,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215731928] [2021-11-05 12:05:26,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:05:26,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-05 12:05:26,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:05:26,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-05 12:05:26,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-05 12:05:26,860 INFO L87 Difference]: Start difference. First operand 1401 states and 1603 transitions. Second operand has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 12:05:28,920 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 12:05:31,082 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:05:33,175 WARN L515 Checker$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 12:05:35,253 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:05:40,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:05:40,001 INFO L93 Difference]: Finished difference Result 2465 states and 2815 transitions. [2021-11-05 12:05:40,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-05 12:05:40,002 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2021-11-05 12:05:40,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:05:40,006 INFO L225 Difference]: With dead ends: 2465 [2021-11-05 12:05:40,006 INFO L226 Difference]: Without dead ends: 2250 [2021-11-05 12:05:40,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1454.15ms TimeCoverageRelationStatistics Valid=226, Invalid=586, Unknown=0, NotChecked=0, Total=812 [2021-11-05 12:05:40,007 INFO L933 BasicCegarLoop]: 647 mSDtfsCounter, 2893 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 136 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11300.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2893 SdHoareTripleChecker+Valid, 3813 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.68ms SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11937.91ms IncrementalHoareTripleChecker+Time [2021-11-05 12:05:40,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2893 Valid, 3813 Invalid, 1238 Unknown, 0 Unchecked, 17.68ms Time], IncrementalHoareTripleChecker [136 Valid, 1098 Invalid, 4 Unknown, 0 Unchecked, 11937.91ms Time] [2021-11-05 12:05:40,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2250 states. [2021-11-05 12:05:40,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2250 to 1564. [2021-11-05 12:05:40,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1564 states, 1544 states have (on average 1.1599740932642486) internal successors, (1791), 1563 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states 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 12:05:40,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 1791 transitions. [2021-11-05 12:05:40,074 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 1791 transitions. Word has length 84 [2021-11-05 12:05:40,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:05:40,074 INFO L470 AbstractCegarLoop]: Abstraction has 1564 states and 1791 transitions. [2021-11-05 12:05:40,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 12:05:40,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 1791 transitions. [2021-11-05 12:05:40,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-05 12:05:40,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:05:40,076 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] [2021-11-05 12:05:40,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-05 12:05:40,076 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:05:40,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:05:40,077 INFO L85 PathProgramCache]: Analyzing trace with hash 401300205, now seen corresponding path program 1 times [2021-11-05 12:05:40,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:05:40,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81530209] [2021-11-05 12:05:40,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:05:40,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:05:40,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:05:40,432 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 12:05:40,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:05:40,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81530209] [2021-11-05 12:05:40,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81530209] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:05:40,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:05:40,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:05:40,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899051458] [2021-11-05 12:05:40,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:05:40,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:05:40,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:05:40,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:05:40,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:05:40,433 INFO L87 Difference]: Start difference. First operand 1564 states and 1791 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 12:05:42,492 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 12:05:43,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:05:43,682 INFO L93 Difference]: Finished difference Result 2138 states and 2448 transitions. [2021-11-05 12:05:43,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:05:43,682 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2021-11-05 12:05:43,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:05:43,685 INFO L225 Difference]: With dead ends: 2138 [2021-11-05 12:05:43,685 INFO L226 Difference]: Without dead ends: 1765 [2021-11-05 12:05:43,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 97.86ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:05:43,686 INFO L933 BasicCegarLoop]: 588 mSDtfsCounter, 806 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2943.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.98ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3123.78ms IncrementalHoareTripleChecker+Time [2021-11-05 12:05:43,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [806 Valid, 1421 Invalid, 327 Unknown, 0 Unchecked, 4.98ms Time], IncrementalHoareTripleChecker [36 Valid, 290 Invalid, 1 Unknown, 0 Unchecked, 3123.78ms Time] [2021-11-05 12:05:43,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1765 states. [2021-11-05 12:05:43,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1765 to 1552. [2021-11-05 12:05:43,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1552 states, 1532 states have (on average 1.150130548302872) internal successors, (1762), 1551 states have internal predecessors, (1762), 0 states have call successors, (0), 0 states 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 12:05:43,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 1762 transitions. [2021-11-05 12:05:43,772 INFO L78 Accepts]: Start accepts. Automaton has 1552 states and 1762 transitions. Word has length 84 [2021-11-05 12:05:43,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:05:43,772 INFO L470 AbstractCegarLoop]: Abstraction has 1552 states and 1762 transitions. [2021-11-05 12:05:43,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 12:05:43,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1552 states and 1762 transitions. [2021-11-05 12:05:43,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-05 12:05:43,774 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:05:43,774 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:43,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-05 12:05:43,774 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:05:43,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:05:43,774 INFO L85 PathProgramCache]: Analyzing trace with hash 380773357, now seen corresponding path program 1 times [2021-11-05 12:05:43,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:05:43,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302866856] [2021-11-05 12:05:43,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:05:43,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:05:43,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:05:44,870 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 12:05:44,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:05:44,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302866856] [2021-11-05 12:05:44,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302866856] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:05:44,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:05:44,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-05 12:05:44,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26742056] [2021-11-05 12:05:44,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:05:44,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-05 12:05:44,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:05:44,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-05 12:05:44,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-05 12:05:44,871 INFO L87 Difference]: Start difference. First operand 1552 states and 1762 transitions. Second operand has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 12:05:46,928 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:05:49,017 WARN L515 Checker$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 12:05:55,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:05:55,234 INFO L93 Difference]: Finished difference Result 3005 states and 3388 transitions. [2021-11-05 12:05:55,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-05 12:05:55,235 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2021-11-05 12:05:55,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:05:55,238 INFO L225 Difference]: With dead ends: 3005 [2021-11-05 12:05:55,238 INFO L226 Difference]: Without dead ends: 2245 [2021-11-05 12:05:55,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 2090.82ms TimeCoverageRelationStatistics Valid=238, Invalid=692, Unknown=0, NotChecked=0, Total=930 [2021-11-05 12:05:55,240 INFO L933 BasicCegarLoop]: 609 mSDtfsCounter, 5726 mSDsluCounter, 3195 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 129 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8128.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5726 SdHoareTripleChecker+Valid, 3804 SdHoareTripleChecker+Invalid, 1319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.95ms SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8619.17ms IncrementalHoareTripleChecker+Time [2021-11-05 12:05:55,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5726 Valid, 3804 Invalid, 1319 Unknown, 0 Unchecked, 22.95ms Time], IncrementalHoareTripleChecker [129 Valid, 1188 Invalid, 2 Unknown, 0 Unchecked, 8619.17ms Time] [2021-11-05 12:05:55,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2245 states. [2021-11-05 12:05:55,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2245 to 1446. [2021-11-05 12:05:55,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1446 states, 1426 states have (on average 1.1451612903225807) internal successors, (1633), 1445 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states 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 12:05:55,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 1633 transitions. [2021-11-05 12:05:55,293 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 1633 transitions. Word has length 84 [2021-11-05 12:05:55,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:05:55,293 INFO L470 AbstractCegarLoop]: Abstraction has 1446 states and 1633 transitions. [2021-11-05 12:05:55,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 12:05:55,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 1633 transitions. [2021-11-05 12:05:55,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-05 12:05:55,294 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:05:55,295 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] [2021-11-05 12:05:55,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-05 12:05:55,295 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:05:55,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:05:55,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1305406481, now seen corresponding path program 1 times [2021-11-05 12:05:55,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:05:55,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561711527] [2021-11-05 12:05:55,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:05:55,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:05:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:06:00,997 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 12:06:00,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:06:00,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561711527] [2021-11-05 12:06:00,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561711527] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:06:00,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:06:00,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-05 12:06:00,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077337344] [2021-11-05 12:06:00,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:06:00,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-05 12:06:00,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:06:00,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-05 12:06:00,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-11-05 12:06:00,998 INFO L87 Difference]: Start difference. First operand 1446 states and 1633 transitions. Second operand has 16 states, 16 states have (on average 5.25) internal successors, (84), 15 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 12:06:03,056 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:06:05,152 WARN L515 Checker$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 12:06:07,242 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:06:09,307 WARN L515 Checker$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 12:06:11,416 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:06:13,494 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:06:19,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:06:19,861 INFO L93 Difference]: Finished difference Result 1899 states and 2140 transitions. [2021-11-05 12:06:19,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-05 12:06:19,862 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 15 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2021-11-05 12:06:19,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:06:19,864 INFO L225 Difference]: With dead ends: 1899 [2021-11-05 12:06:19,864 INFO L226 Difference]: Without dead ends: 1679 [2021-11-05 12:06:19,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 2080.29ms TimeCoverageRelationStatistics Valid=208, Invalid=604, Unknown=0, NotChecked=0, Total=812 [2021-11-05 12:06:19,865 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 2857 mSDsluCounter, 3675 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 112 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16694.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2857 SdHoareTripleChecker+Valid, 4245 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.77ms SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17577.39ms IncrementalHoareTripleChecker+Time [2021-11-05 12:06:19,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2857 Valid, 4245 Invalid, 1390 Unknown, 0 Unchecked, 22.77ms Time], IncrementalHoareTripleChecker [112 Valid, 1272 Invalid, 6 Unknown, 0 Unchecked, 17577.39ms Time] [2021-11-05 12:06:19,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1679 states. [2021-11-05 12:06:19,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1679 to 1441. [2021-11-05 12:06:19,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1421 states have (on average 1.1428571428571428) internal successors, (1624), 1440 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states 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 12:06:19,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1624 transitions. [2021-11-05 12:06:19,920 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1624 transitions. Word has length 84 [2021-11-05 12:06:19,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:06:19,920 INFO L470 AbstractCegarLoop]: Abstraction has 1441 states and 1624 transitions. [2021-11-05 12:06:19,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.25) internal successors, (84), 15 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 12:06:19,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1624 transitions. [2021-11-05 12:06:19,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-05 12:06:19,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:06:19,936 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 12:06:19,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-05 12:06:19,936 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:06:19,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:06:19,937 INFO L85 PathProgramCache]: Analyzing trace with hash 325168929, now seen corresponding path program 1 times [2021-11-05 12:06:19,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:06:19,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294534894] [2021-11-05 12:06:19,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:06:19,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:06:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:06:22,248 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 12:06:22,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:06:22,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294534894] [2021-11-05 12:06:22,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294534894] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:06:22,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:06:22,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 12:06:22,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026662263] [2021-11-05 12:06:22,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:06:22,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 12:06:22,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:06:22,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 12:06:22,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:06:22,250 INFO L87 Difference]: Start difference. First operand 1441 states and 1624 transitions. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 12:06:24,304 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:06:26,423 WARN L515 Checker$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 12:06:28,528 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:06:30,617 WARN L515 Checker$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 12:06:34,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:06:34,001 INFO L93 Difference]: Finished difference Result 1552 states and 1735 transitions. [2021-11-05 12:06:34,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 12:06:34,002 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 12:06:34,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:06:34,004 INFO L225 Difference]: With dead ends: 1552 [2021-11-05 12:06:34,004 INFO L226 Difference]: Without dead ends: 1550 [2021-11-05 12:06:34,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 944.19ms TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-11-05 12:06:34,005 INFO L933 BasicCegarLoop]: 764 mSDtfsCounter, 1254 mSDsluCounter, 3246 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 16 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10529.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 4010 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.67ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11092.72ms IncrementalHoareTripleChecker+Time [2021-11-05 12:06:34,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1254 Valid, 4010 Invalid, 807 Unknown, 0 Unchecked, 14.67ms Time], IncrementalHoareTripleChecker [16 Valid, 787 Invalid, 4 Unknown, 0 Unchecked, 11092.72ms Time] [2021-11-05 12:06:34,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1550 states. [2021-11-05 12:06:34,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1550 to 1439. [2021-11-05 12:06:34,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1439 states, 1420 states have (on average 1.1422535211267606) internal successors, (1622), 1438 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states 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 12:06:34,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 1622 transitions. [2021-11-05 12:06:34,059 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 1622 transitions. Word has length 85 [2021-11-05 12:06:34,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:06:34,059 INFO L470 AbstractCegarLoop]: Abstraction has 1439 states and 1622 transitions. [2021-11-05 12:06:34,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 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 12:06:34,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 1622 transitions. [2021-11-05 12:06:34,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-05 12:06:34,075 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:06:34,075 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 12:06:34,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-05 12:06:34,076 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:06:34,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:06:34,076 INFO L85 PathProgramCache]: Analyzing trace with hash -481508826, now seen corresponding path program 1 times [2021-11-05 12:06:34,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:06:34,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069895527] [2021-11-05 12:06:34,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:06:34,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:06:34,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:06:34,515 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 12:06:34,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:06:34,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069895527] [2021-11-05 12:06:34,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069895527] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:06:34,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:06:34,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 12:06:34,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917505822] [2021-11-05 12:06:34,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:06:34,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 12:06:34,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:06:34,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 12:06:34,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:06:34,517 INFO L87 Difference]: Start difference. First operand 1439 states and 1622 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 12:06:36,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:06:36,124 INFO L93 Difference]: Finished difference Result 1877 states and 2123 transitions. [2021-11-05 12:06:36,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 12:06:36,124 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 12:06:36,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:06:36,127 INFO L225 Difference]: With dead ends: 1877 [2021-11-05 12:06:36,127 INFO L226 Difference]: Without dead ends: 1867 [2021-11-05 12:06:36,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 402.74ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-11-05 12:06:36,128 INFO L933 BasicCegarLoop]: 490 mSDtfsCounter, 536 mSDsluCounter, 2599 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1216.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 3089 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.17ms SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1293.70ms IncrementalHoareTripleChecker+Time [2021-11-05 12:06:36,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [536 Valid, 3089 Invalid, 516 Unknown, 0 Unchecked, 7.17ms Time], IncrementalHoareTripleChecker [96 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 1293.70ms Time] [2021-11-05 12:06:36,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1867 states. [2021-11-05 12:06:36,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1867 to 1497. [2021-11-05 12:06:36,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1497 states, 1478 states have (on average 1.1366711772665765) internal successors, (1680), 1496 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states 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 12:06:36,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1497 states to 1497 states and 1680 transitions. [2021-11-05 12:06:36,188 INFO L78 Accepts]: Start accepts. Automaton has 1497 states and 1680 transitions. Word has length 86 [2021-11-05 12:06:36,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:06:36,211 INFO L470 AbstractCegarLoop]: Abstraction has 1497 states and 1680 transitions. [2021-11-05 12:06:36,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 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 12:06:36,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1497 states and 1680 transitions. [2021-11-05 12:06:36,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-05 12:06:36,213 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:06:36,213 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 12:06:36,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-05 12:06:36,214 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:06:36,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:06:36,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1290855452, now seen corresponding path program 1 times [2021-11-05 12:06:36,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:06:36,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433652700] [2021-11-05 12:06:36,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:06:36,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:06:36,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:06:37,262 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 12:06:37,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:06:37,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433652700] [2021-11-05 12:06:37,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433652700] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:06:37,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:06:37,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-05 12:06:37,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003125365] [2021-11-05 12:06:37,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:06:37,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-05 12:06:37,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:06:37,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-05 12:06:37,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-05 12:06:37,265 INFO L87 Difference]: Start difference. First operand 1497 states and 1680 transitions. Second operand has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 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 12:06:39,320 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:06:41,454 WARN L515 Checker$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 12:06:43,555 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:06:45,654 WARN L515 Checker$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 12:06:47,751 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:06:49,833 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:06:51,914 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:06:54,022 WARN L515 Checker$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 12:06:56,132 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 12:07:03,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:07:03,007 INFO L93 Difference]: Finished difference Result 2244 states and 2510 transitions. [2021-11-05 12:07:03,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-05 12:07:03,008 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 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 12:07:03,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:07:03,010 INFO L225 Difference]: With dead ends: 2244 [2021-11-05 12:07:03,010 INFO L226 Difference]: Without dead ends: 2018 [2021-11-05 12:07:03,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1956.59ms TimeCoverageRelationStatistics Valid=260, Invalid=862, Unknown=0, NotChecked=0, Total=1122 [2021-11-05 12:07:03,011 INFO L933 BasicCegarLoop]: 617 mSDtfsCounter, 2135 mSDsluCounter, 4473 mSDsCounter, 0 mSdLazyCounter, 1763 mSolverCounterSat, 121 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22977.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2135 SdHoareTripleChecker+Valid, 5090 SdHoareTripleChecker+Invalid, 1893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.61ms SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1763 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24157.16ms IncrementalHoareTripleChecker+Time [2021-11-05 12:07:03,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2135 Valid, 5090 Invalid, 1893 Unknown, 0 Unchecked, 22.61ms Time], IncrementalHoareTripleChecker [121 Valid, 1763 Invalid, 9 Unknown, 0 Unchecked, 24157.16ms Time] [2021-11-05 12:07:03,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2021-11-05 12:07:03,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 1495. [2021-11-05 12:07:03,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1495 states, 1476 states have (on average 1.1334688346883468) internal successors, (1673), 1494 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states 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 12:07:03,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1495 states to 1495 states and 1673 transitions. [2021-11-05 12:07:03,070 INFO L78 Accepts]: Start accepts. Automaton has 1495 states and 1673 transitions. Word has length 86 [2021-11-05 12:07:03,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:07:03,070 INFO L470 AbstractCegarLoop]: Abstraction has 1495 states and 1673 transitions. [2021-11-05 12:07:03,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 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 12:07:03,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1495 states and 1673 transitions. [2021-11-05 12:07:03,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-05 12:07:03,071 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:07:03,071 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 12:07:03,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-05 12:07:03,072 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:07:03,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:07:03,072 INFO L85 PathProgramCache]: Analyzing trace with hash -57409048, now seen corresponding path program 1 times [2021-11-05 12:07:03,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:07:03,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683753491] [2021-11-05 12:07:03,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:07:03,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:07:05,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:07:06,123 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 12:07:06,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:07:06,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683753491] [2021-11-05 12:07:06,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683753491] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:07:06,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:07:06,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-05 12:07:06,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103918890] [2021-11-05 12:07:06,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:07:06,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-05 12:07:06,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:07:06,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-05 12:07:06,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2021-11-05 12:07:06,124 INFO L87 Difference]: Start difference. First operand 1495 states and 1673 transitions. Second operand has 17 states, 17 states have (on average 5.0588235294117645) internal successors, (86), 17 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 12:07:08,204 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:07:10,308 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:07:12,408 WARN L515 Checker$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 12:07:14,522 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:07:16,641 WARN L515 Checker$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 12:07:18,716 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:07:20,840 WARN L515 Checker$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 12:07:33,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:07:33,930 INFO L93 Difference]: Finished difference Result 2283 states and 2543 transitions. [2021-11-05 12:07:33,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-05 12:07:33,930 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.0588235294117645) internal successors, (86), 17 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 12:07:33,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:07:33,933 INFO L225 Difference]: With dead ends: 2283 [2021-11-05 12:07:33,933 INFO L226 Difference]: Without dead ends: 2271 [2021-11-05 12:07:33,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1623 ImplicationChecksByTransitivity, 7569.08ms TimeCoverageRelationStatistics Valid=1034, Invalid=4516, Unknown=0, NotChecked=0, Total=5550 [2021-11-05 12:07:33,935 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 3801 mSDsluCounter, 5202 mSDsCounter, 0 mSdLazyCounter, 2003 mSolverCounterSat, 369 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19612.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3801 SdHoareTripleChecker+Valid, 5767 SdHoareTripleChecker+Invalid, 2379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.25ms SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 2003 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20696.34ms IncrementalHoareTripleChecker+Time [2021-11-05 12:07:33,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3801 Valid, 5767 Invalid, 2379 Unknown, 0 Unchecked, 33.25ms Time], IncrementalHoareTripleChecker [369 Valid, 2003 Invalid, 7 Unknown, 0 Unchecked, 20696.34ms Time] [2021-11-05 12:07:33,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2271 states. [2021-11-05 12:07:33,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2271 to 1531. [2021-11-05 12:07:33,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1531 states, 1513 states have (on average 1.1381361533377397) internal successors, (1722), 1530 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states 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 12:07:33,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 1722 transitions. [2021-11-05 12:07:33,997 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 1722 transitions. Word has length 86 [2021-11-05 12:07:33,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:07:33,998 INFO L470 AbstractCegarLoop]: Abstraction has 1531 states and 1722 transitions. [2021-11-05 12:07:33,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.0588235294117645) internal successors, (86), 17 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 12:07:33,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 1722 transitions. [2021-11-05 12:07:33,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-05 12:07:33,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:07:33,999 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] [2021-11-05 12:07:33,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-05 12:07:34,000 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:07:34,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:07:34,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1922117552, now seen corresponding path program 1 times [2021-11-05 12:07:34,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:07:34,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920539018] [2021-11-05 12:07:34,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:07:34,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:07:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:07:34,748 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 12:07:34,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:07:34,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920539018] [2021-11-05 12:07:34,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920539018] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:07:34,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:07:34,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 12:07:34,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472259879] [2021-11-05 12:07:34,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:07:34,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 12:07:34,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:07:34,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 12:07:34,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:07:34,749 INFO L87 Difference]: Start difference. First operand 1531 states and 1722 transitions. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:07:36,804 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:07:38,948 WARN L515 Checker$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 12:07:41,052 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 12:07:44,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:07:44,201 INFO L93 Difference]: Finished difference Result 1818 states and 2035 transitions. [2021-11-05 12:07:44,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-05 12:07:44,201 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-05 12:07:44,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:07:44,204 INFO L225 Difference]: With dead ends: 1818 [2021-11-05 12:07:44,204 INFO L226 Difference]: Without dead ends: 1757 [2021-11-05 12:07:44,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 736.98ms TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2021-11-05 12:07:44,205 INFO L933 BasicCegarLoop]: 602 mSDtfsCounter, 1574 mSDsluCounter, 2723 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 47 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8318.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1574 SdHoareTripleChecker+Valid, 3325 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.67ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8801.51ms IncrementalHoareTripleChecker+Time [2021-11-05 12:07:44,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1574 Valid, 3325 Invalid, 819 Unknown, 0 Unchecked, 10.67ms Time], IncrementalHoareTripleChecker [47 Valid, 769 Invalid, 3 Unknown, 0 Unchecked, 8801.51ms Time] [2021-11-05 12:07:44,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1757 states. [2021-11-05 12:07:44,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1757 to 1531. [2021-11-05 12:07:44,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1531 states, 1513 states have (on average 1.1361533377395903) internal successors, (1719), 1530 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states 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 12:07:44,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 1719 transitions. [2021-11-05 12:07:44,267 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 1719 transitions. Word has length 88 [2021-11-05 12:07:44,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:07:44,268 INFO L470 AbstractCegarLoop]: Abstraction has 1531 states and 1719 transitions. [2021-11-05 12:07:44,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:07:44,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 1719 transitions. [2021-11-05 12:07:44,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-05 12:07:44,269 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:07:44,269 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] [2021-11-05 12:07:44,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-05 12:07:44,269 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:07:44,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:07:44,270 INFO L85 PathProgramCache]: Analyzing trace with hash -939839562, now seen corresponding path program 1 times [2021-11-05 12:07:44,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:07:44,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819123695] [2021-11-05 12:07:44,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:07:44,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:07:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:07:47,896 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 12:07:47,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:07:47,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819123695] [2021-11-05 12:07:47,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819123695] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:07:47,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:07:47,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-05 12:07:47,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893199196] [2021-11-05 12:07:47,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:07:47,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-05 12:07:47,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:07:47,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-05 12:07:47,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-05 12:07:47,897 INFO L87 Difference]: Start difference. First operand 1531 states and 1719 transitions. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:07:49,956 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 12:07:52,109 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:07:54,177 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:07:56,274 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 12:08:01,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:08:01,405 INFO L93 Difference]: Finished difference Result 1996 states and 2229 transitions. [2021-11-05 12:08:01,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-05 12:08:01,406 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-05 12:08:01,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:08:01,409 INFO L225 Difference]: With dead ends: 1996 [2021-11-05 12:08:01,409 INFO L226 Difference]: Without dead ends: 1914 [2021-11-05 12:08:01,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1941.88ms TimeCoverageRelationStatistics Valid=207, Invalid=495, Unknown=0, NotChecked=0, Total=702 [2021-11-05 12:08:01,410 INFO L933 BasicCegarLoop]: 563 mSDtfsCounter, 2795 mSDsluCounter, 2988 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 91 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11399.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2795 SdHoareTripleChecker+Valid, 3551 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.50ms SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12026.38ms IncrementalHoareTripleChecker+Time [2021-11-05 12:08:01,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2795 Valid, 3551 Invalid, 1110 Unknown, 0 Unchecked, 18.50ms Time], IncrementalHoareTripleChecker [91 Valid, 1015 Invalid, 4 Unknown, 0 Unchecked, 12026.38ms Time] [2021-11-05 12:08:01,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2021-11-05 12:08:01,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1515. [2021-11-05 12:08:01,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1515 states, 1497 states have (on average 1.1315965263861056) internal successors, (1694), 1514 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states 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 12:08:01,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 1694 transitions. [2021-11-05 12:08:01,473 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 1694 transitions. Word has length 88 [2021-11-05 12:08:01,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:08:01,473 INFO L470 AbstractCegarLoop]: Abstraction has 1515 states and 1694 transitions. [2021-11-05 12:08:01,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:08:01,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 1694 transitions. [2021-11-05 12:08:01,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-05 12:08:01,474 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:08:01,474 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] [2021-11-05 12:08:01,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-05 12:08:01,475 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:08:01,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:08:01,475 INFO L85 PathProgramCache]: Analyzing trace with hash -216245460, now seen corresponding path program 1 times [2021-11-05 12:08:01,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:08:01,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34930640] [2021-11-05 12:08:01,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:08:01,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:08:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:08:04,867 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 12:08:04,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:08:04,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34930640] [2021-11-05 12:08:04,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34930640] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:08:04,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:08:04,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-05 12:08:04,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693934424] [2021-11-05 12:08:04,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:08:04,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-05 12:08:04,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:08:04,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-05 12:08:04,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2021-11-05 12:08:04,870 INFO L87 Difference]: Start difference. First operand 1515 states and 1694 transitions. Second operand has 19 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:08:06,928 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 12:08:09,043 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:08:11,178 WARN L515 Checker$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 12:08:13,260 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:08:15,361 WARN L515 Checker$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 12:08:17,443 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:08:38,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:08:38,132 INFO L93 Difference]: Finished difference Result 2501 states and 2779 transitions. [2021-11-05 12:08:38,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-11-05 12:08:38,134 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-05 12:08:38,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:08:38,138 INFO L225 Difference]: With dead ends: 2501 [2021-11-05 12:08:38,138 INFO L226 Difference]: Without dead ends: 2440 [2021-11-05 12:08:38,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1463 ImplicationChecksByTransitivity, 9927.44ms TimeCoverageRelationStatistics Valid=1061, Invalid=4195, Unknown=0, NotChecked=0, Total=5256 [2021-11-05 12:08:38,140 INFO L933 BasicCegarLoop]: 1091 mSDtfsCounter, 2438 mSDsluCounter, 11455 mSDsCounter, 0 mSdLazyCounter, 3656 mSolverCounterSat, 120 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22858.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2438 SdHoareTripleChecker+Valid, 12546 SdHoareTripleChecker+Invalid, 3782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 58.91ms SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 3656 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24136.46ms IncrementalHoareTripleChecker+Time [2021-11-05 12:08:38,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2438 Valid, 12546 Invalid, 3782 Unknown, 0 Unchecked, 58.91ms Time], IncrementalHoareTripleChecker [120 Valid, 3656 Invalid, 6 Unknown, 0 Unchecked, 24136.46ms Time] [2021-11-05 12:08:38,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2440 states. [2021-11-05 12:08:38,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2440 to 1554. [2021-11-05 12:08:38,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1554 states, 1536 states have (on average 1.1282552083333333) internal successors, (1733), 1553 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states 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 12:08:38,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 1733 transitions. [2021-11-05 12:08:38,213 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 1733 transitions. Word has length 88 [2021-11-05 12:08:38,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:08:38,213 INFO L470 AbstractCegarLoop]: Abstraction has 1554 states and 1733 transitions. [2021-11-05 12:08:38,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:08:38,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 1733 transitions. [2021-11-05 12:08:38,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-05 12:08:38,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:08:38,215 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] [2021-11-05 12:08:38,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-05 12:08:38,215 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:08:38,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:08:38,216 INFO L85 PathProgramCache]: Analyzing trace with hash 908052616, now seen corresponding path program 1 times [2021-11-05 12:08:38,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:08:38,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403284779] [2021-11-05 12:08:38,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:08:38,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:08:41,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:08:42,740 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 12:08:42,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:08:42,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403284779] [2021-11-05 12:08:42,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403284779] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:08:42,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:08:42,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-05 12:08:42,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793360908] [2021-11-05 12:08:42,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:08:42,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-05 12:08:42,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:08:42,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-05 12:08:42,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-11-05 12:08:42,741 INFO L87 Difference]: Start difference. First operand 1554 states and 1733 transitions. Second operand has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:08:44,798 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 12:08:46,902 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:08:48,969 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:08:54,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:08:54,170 INFO L93 Difference]: Finished difference Result 1816 states and 2019 transitions. [2021-11-05 12:08:54,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-05 12:08:54,171 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-05 12:08:54,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:08:54,174 INFO L225 Difference]: With dead ends: 1816 [2021-11-05 12:08:54,174 INFO L226 Difference]: Without dead ends: 1755 [2021-11-05 12:08:54,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1755.61ms TimeCoverageRelationStatistics Valid=189, Invalid=461, Unknown=0, NotChecked=0, Total=650 [2021-11-05 12:08:54,175 INFO L933 BasicCegarLoop]: 642 mSDtfsCounter, 1682 mSDsluCounter, 3352 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 55 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9673.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1682 SdHoareTripleChecker+Valid, 3994 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.76ms SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10273.90ms IncrementalHoareTripleChecker+Time [2021-11-05 12:08:54,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1682 Valid, 3994 Invalid, 1089 Unknown, 0 Unchecked, 16.76ms Time], IncrementalHoareTripleChecker [55 Valid, 1031 Invalid, 3 Unknown, 0 Unchecked, 10273.90ms Time] [2021-11-05 12:08:54,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1755 states. [2021-11-05 12:08:54,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1755 to 1512. [2021-11-05 12:08:54,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1494 states have (on average 1.1291834002677377) internal successors, (1687), 1511 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states 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 12:08:54,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 1687 transitions. [2021-11-05 12:08:54,246 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 1687 transitions. Word has length 93 [2021-11-05 12:08:54,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:08:54,246 INFO L470 AbstractCegarLoop]: Abstraction has 1512 states and 1687 transitions. [2021-11-05 12:08:54,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.2) internal successors, (93), 15 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:08:54,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 1687 transitions. [2021-11-05 12:08:54,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-05 12:08:54,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:08:54,248 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] [2021-11-05 12:08:54,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-05 12:08:54,248 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:08:54,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:08:54,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1132542281, now seen corresponding path program 1 times [2021-11-05 12:08:54,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:08:54,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38986233] [2021-11-05 12:08:54,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:08:54,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:08:54,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:08:54,586 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 12:08:54,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:08:54,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38986233] [2021-11-05 12:08:54,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38986233] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:08:54,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:08:54,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 12:08:54,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586222262] [2021-11-05 12:08:54,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:08:54,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 12:08:54,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:08:54,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 12:08:54,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:08:54,587 INFO L87 Difference]: Start difference. First operand 1512 states and 1687 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:08:55,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:08:55,525 INFO L93 Difference]: Finished difference Result 1844 states and 2044 transitions. [2021-11-05 12:08:55,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:08:55,526 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-05 12:08:55,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:08:55,528 INFO L225 Difference]: With dead ends: 1844 [2021-11-05 12:08:55,528 INFO L226 Difference]: Without dead ends: 1834 [2021-11-05 12:08:55,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 185.72ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:08:55,529 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 211 mSDsluCounter, 1638 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 665.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 2090 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.91ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 726.47ms IncrementalHoareTripleChecker+Time [2021-11-05 12:08:55,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 2090 Invalid, 255 Unknown, 0 Unchecked, 3.91ms Time], IncrementalHoareTripleChecker [40 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 726.47ms Time] [2021-11-05 12:08:55,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1834 states. [2021-11-05 12:08:55,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1834 to 1536. [2021-11-05 12:08:55,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1536 states, 1518 states have (on average 1.127140974967062) internal successors, (1711), 1535 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states 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 12:08:55,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1536 states to 1536 states and 1711 transitions. [2021-11-05 12:08:55,599 INFO L78 Accepts]: Start accepts. Automaton has 1536 states and 1711 transitions. Word has length 93 [2021-11-05 12:08:55,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:08:55,600 INFO L470 AbstractCegarLoop]: Abstraction has 1536 states and 1711 transitions. [2021-11-05 12:08:55,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:08:55,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1536 states and 1711 transitions. [2021-11-05 12:08:55,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-05 12:08:55,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:08:55,601 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] [2021-11-05 12:08:55,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-05 12:08:55,602 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:08:55,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:08:55,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1187021564, now seen corresponding path program 1 times [2021-11-05 12:08:55,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:08:55,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806343395] [2021-11-05 12:08:55,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:08:55,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:08:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:08:59,031 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 12:08:59,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:08:59,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806343395] [2021-11-05 12:08:59,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806343395] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:08:59,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:08:59,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-05 12:08:59,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706048922] [2021-11-05 12:08:59,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:08:59,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-05 12:08:59,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:08:59,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-05 12:08:59,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-11-05 12:08:59,033 INFO L87 Difference]: Start difference. First operand 1536 states and 1711 transitions. Second operand has 17 states, 17 states have (on average 5.705882352941177) internal successors, (97), 17 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 12:09:01,087 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:09:03,196 WARN L515 Checker$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 12:09:05,285 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:09:07,399 WARN L515 Checker$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 12:09:09,484 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:09:11,584 WARN L515 Checker$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 12:09:13,673 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 12:09:21,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:09:21,961 INFO L93 Difference]: Finished difference Result 2135 states and 2366 transitions. [2021-11-05 12:09:21,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-05 12:09:21,962 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.705882352941177) internal successors, (97), 17 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2021-11-05 12:09:21,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:09:21,965 INFO L225 Difference]: With dead ends: 2135 [2021-11-05 12:09:21,965 INFO L226 Difference]: Without dead ends: 2133 [2021-11-05 12:09:21,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 3469.51ms TimeCoverageRelationStatistics Valid=218, Invalid=774, Unknown=0, NotChecked=0, Total=992 [2021-11-05 12:09:21,966 INFO L933 BasicCegarLoop]: 588 mSDtfsCounter, 3309 mSDsluCounter, 4394 mSDsCounter, 0 mSdLazyCounter, 1757 mSolverCounterSat, 154 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19099.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3309 SdHoareTripleChecker+Valid, 4982 SdHoareTripleChecker+Invalid, 1918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.00ms SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1757 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20148.03ms IncrementalHoareTripleChecker+Time [2021-11-05 12:09:21,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3309 Valid, 4982 Invalid, 1918 Unknown, 0 Unchecked, 28.00ms Time], IncrementalHoareTripleChecker [154 Valid, 1757 Invalid, 7 Unknown, 0 Unchecked, 20148.03ms Time] [2021-11-05 12:09:21,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2133 states. [2021-11-05 12:09:22,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2133 to 1618. [2021-11-05 12:09:22,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1600 states have (on average 1.13) internal successors, (1808), 1617 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states 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 12:09:22,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 1808 transitions. [2021-11-05 12:09:22,046 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 1808 transitions. Word has length 97 [2021-11-05 12:09:22,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:09:22,047 INFO L470 AbstractCegarLoop]: Abstraction has 1618 states and 1808 transitions. [2021-11-05 12:09:22,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.705882352941177) internal successors, (97), 17 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 12:09:22,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 1808 transitions. [2021-11-05 12:09:22,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-05 12:09:22,048 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:09:22,048 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] [2021-11-05 12:09:22,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-05 12:09:22,049 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:09:22,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:09:22,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1187032487, now seen corresponding path program 1 times [2021-11-05 12:09:22,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:09:22,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528607237] [2021-11-05 12:09:22,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:09:22,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:09:22,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:09:22,224 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 12:09:22,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:09:22,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528607237] [2021-11-05 12:09:22,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528607237] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:09:22,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:09:22,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:09:22,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249985361] [2021-11-05 12:09:22,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:09:22,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:09:22,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:09:22,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:09:22,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:09:22,225 INFO L87 Difference]: Start difference. First operand 1618 states and 1808 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 12:09:22,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:09:22,389 INFO L93 Difference]: Finished difference Result 1792 states and 2003 transitions. [2021-11-05 12:09:22,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 12:09:22,390 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2021-11-05 12:09:22,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:09:22,392 INFO L225 Difference]: With dead ends: 1792 [2021-11-05 12:09:22,392 INFO L226 Difference]: Without dead ends: 1682 [2021-11-05 12:09:22,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 69.71ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:09:22,393 INFO L933 BasicCegarLoop]: 531 mSDtfsCounter, 68 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.97ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.09ms IncrementalHoareTripleChecker+Time [2021-11-05 12:09:22,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 1523 Invalid, 13 Unknown, 0 Unchecked, 0.97ms Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 43.09ms Time] [2021-11-05 12:09:22,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1682 states. [2021-11-05 12:09:22,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1682 to 1608. [2021-11-05 12:09:22,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1608 states, 1590 states have (on average 1.1264150943396227) internal successors, (1791), 1607 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states 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 12:09:22,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1608 states to 1608 states and 1791 transitions. [2021-11-05 12:09:22,472 INFO L78 Accepts]: Start accepts. Automaton has 1608 states and 1791 transitions. Word has length 97 [2021-11-05 12:09:22,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:09:22,473 INFO L470 AbstractCegarLoop]: Abstraction has 1608 states and 1791 transitions. [2021-11-05 12:09:22,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 12:09:22,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1608 states and 1791 transitions. [2021-11-05 12:09:22,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-05 12:09:22,474 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:09:22,474 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] [2021-11-05 12:09:22,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-05 12:09:22,474 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:09:22,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:09:22,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1358083631, now seen corresponding path program 1 times [2021-11-05 12:09:22,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:09:22,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300798600] [2021-11-05 12:09:22,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:09:22,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:09:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:09:23,367 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 12:09:23,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:09:23,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300798600] [2021-11-05 12:09:23,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300798600] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:09:23,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:09:23,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-05 12:09:23,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236545961] [2021-11-05 12:09:23,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:09:23,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-05 12:09:23,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:09:23,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-05 12:09:23,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-05 12:09:23,369 INFO L87 Difference]: Start difference. First operand 1608 states and 1791 transitions. Second operand has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 13 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 12:09:25,427 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 12:09:27,542 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:09:29,644 WARN L515 Checker$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 12:09:31,737 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 12:09:36,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:09:36,630 INFO L93 Difference]: Finished difference Result 2219 states and 2448 transitions. [2021-11-05 12:09:36,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-05 12:09:36,630 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 13 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2021-11-05 12:09:36,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:09:36,632 INFO L225 Difference]: With dead ends: 2219 [2021-11-05 12:09:36,632 INFO L226 Difference]: Without dead ends: 1882 [2021-11-05 12:09:36,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 2266.32ms TimeCoverageRelationStatistics Valid=265, Invalid=665, Unknown=0, NotChecked=0, Total=930 [2021-11-05 12:09:36,633 INFO L933 BasicCegarLoop]: 400 mSDtfsCounter, 2683 mSDsluCounter, 2291 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 94 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10644.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2683 SdHoareTripleChecker+Valid, 2691 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.44ms SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11268.24ms IncrementalHoareTripleChecker+Time [2021-11-05 12:09:36,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2683 Valid, 2691 Invalid, 933 Unknown, 0 Unchecked, 16.44ms Time], IncrementalHoareTripleChecker [94 Valid, 835 Invalid, 4 Unknown, 0 Unchecked, 11268.24ms Time] [2021-11-05 12:09:36,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1882 states. [2021-11-05 12:09:36,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1882 to 1453. [2021-11-05 12:09:36,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1453 states, 1435 states have (on average 1.1282229965156794) internal successors, (1619), 1452 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states 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 12:09:36,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 1619 transitions. [2021-11-05 12:09:36,733 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 1619 transitions. Word has length 97 [2021-11-05 12:09:36,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:09:36,733 INFO L470 AbstractCegarLoop]: Abstraction has 1453 states and 1619 transitions. [2021-11-05 12:09:36,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 13 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 12:09:36,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 1619 transitions. [2021-11-05 12:09:36,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-05 12:09:36,735 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:09:36,736 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] [2021-11-05 12:09:36,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-05 12:09:36,736 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:09:36,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:09:36,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1123753018, now seen corresponding path program 1 times [2021-11-05 12:09:36,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:09:36,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490854509] [2021-11-05 12:09:36,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:09:36,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:09:36,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:09:37,633 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 12:09:37,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:09:37,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490854509] [2021-11-05 12:09:37,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490854509] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:09:37,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:09:37,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 12:09:37,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356701453] [2021-11-05 12:09:37,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:09:37,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 12:09:37,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:09:37,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 12:09:37,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:09:37,634 INFO L87 Difference]: Start difference. First operand 1453 states and 1619 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:09:39,698 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 12:09:40,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:09:40,757 INFO L93 Difference]: Finished difference Result 1511 states and 1677 transitions. [2021-11-05 12:09:40,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:09:40,757 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-05 12:09:40,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:09:40,759 INFO L225 Difference]: With dead ends: 1511 [2021-11-05 12:09:40,759 INFO L226 Difference]: Without dead ends: 1509 [2021-11-05 12:09:40,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 544.37ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:09:40,760 INFO L933 BasicCegarLoop]: 632 mSDtfsCounter, 1528 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2670.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.91ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2822.16ms IncrementalHoareTripleChecker+Time [2021-11-05 12:09:40,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1528 Valid, 1549 Invalid, 218 Unknown, 0 Unchecked, 4.91ms Time], IncrementalHoareTripleChecker [13 Valid, 204 Invalid, 1 Unknown, 0 Unchecked, 2822.16ms Time] [2021-11-05 12:09:40,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2021-11-05 12:09:40,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1479. [2021-11-05 12:09:40,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 1461 states have (on average 1.1286789869952087) internal successors, (1649), 1478 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states 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 12:09:40,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 1649 transitions. [2021-11-05 12:09:40,848 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 1649 transitions. Word has length 99 [2021-11-05 12:09:40,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:09:40,848 INFO L470 AbstractCegarLoop]: Abstraction has 1479 states and 1649 transitions. [2021-11-05 12:09:40,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:09:40,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 1649 transitions. [2021-11-05 12:09:40,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-05 12:09:40,849 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:09:40,850 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] [2021-11-05 12:09:40,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-05 12:09:40,850 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:09:40,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:09:40,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1890021852, now seen corresponding path program 1 times [2021-11-05 12:09:40,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:09:40,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820264221] [2021-11-05 12:09:40,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:09:40,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:09:53,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:09:53,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:09:53,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:09:53,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820264221] [2021-11-05 12:09:53,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820264221] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:09:53,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:09:53,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:09:53,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301553551] [2021-11-05 12:09:53,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:09:53,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:09:53,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:09:53,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:09:53,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:09:53,406 INFO L87 Difference]: Start difference. First operand 1479 states and 1649 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 12:09:55,459 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 12:09:56,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:09:56,386 INFO L93 Difference]: Finished difference Result 1510 states and 1676 transitions. [2021-11-05 12:09:56,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 12:09:56,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2021-11-05 12:09:56,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:09:56,388 INFO L225 Difference]: With dead ends: 1510 [2021-11-05 12:09:56,389 INFO L226 Difference]: Without dead ends: 1508 [2021-11-05 12:09:56,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 96.48ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:09:56,389 INFO L933 BasicCegarLoop]: 642 mSDtfsCounter, 273 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2672.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.13ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2832.79ms IncrementalHoareTripleChecker+Time [2021-11-05 12:09:56,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 1585 Invalid, 191 Unknown, 0 Unchecked, 4.13ms Time], IncrementalHoareTripleChecker [1 Valid, 189 Invalid, 1 Unknown, 0 Unchecked, 2832.79ms Time] [2021-11-05 12:09:56,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2021-11-05 12:09:56,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1481. [2021-11-05 12:09:56,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1481 states, 1463 states have (on average 1.128503075871497) internal successors, (1651), 1480 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states 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 12:09:56,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 1651 transitions. [2021-11-05 12:09:56,469 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 1651 transitions. Word has length 101 [2021-11-05 12:09:56,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:09:56,470 INFO L470 AbstractCegarLoop]: Abstraction has 1481 states and 1651 transitions. [2021-11-05 12:09:56,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 12:09:56,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 1651 transitions. [2021-11-05 12:09:56,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-05 12:09:56,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:09:56,471 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:09:56,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-05 12:09:56,472 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:09:56,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:09:56,472 INFO L85 PathProgramCache]: Analyzing trace with hash -4485664, now seen corresponding path program 1 times [2021-11-05 12:09:56,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:09:56,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382550790] [2021-11-05 12:09:56,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:09:56,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:09:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:09:56,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:09:56,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:09:56,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382550790] [2021-11-05 12:09:56,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382550790] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:09:56,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:09:56,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:09:56,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765300789] [2021-11-05 12:09:56,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:09:56,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:09:56,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:09:56,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:09:56,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:09:56,675 INFO L87 Difference]: Start difference. First operand 1481 states and 1651 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:09:56,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:09:56,859 INFO L93 Difference]: Finished difference Result 1738 states and 1933 transitions. [2021-11-05 12:09:56,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:09:56,860 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-11-05 12:09:56,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:09:56,861 INFO L225 Difference]: With dead ends: 1738 [2021-11-05 12:09:56,861 INFO L226 Difference]: Without dead ends: 1594 [2021-11-05 12:09:56,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 103.17ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:09:56,862 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 625 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 2063 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.41ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.51ms IncrementalHoareTripleChecker+Time [2021-11-05 12:09:56,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [625 Valid, 2063 Invalid, 16 Unknown, 0 Unchecked, 1.41ms Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 45.51ms Time] [2021-11-05 12:09:56,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2021-11-05 12:09:56,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 1430. [2021-11-05 12:09:56,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1430 states, 1413 states have (on average 1.1252653927813163) internal successors, (1590), 1429 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states 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 12:09:56,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 1590 transitions. [2021-11-05 12:09:56,944 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 1590 transitions. Word has length 102 [2021-11-05 12:09:56,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:09:56,945 INFO L470 AbstractCegarLoop]: Abstraction has 1430 states and 1590 transitions. [2021-11-05 12:09:56,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:09:56,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 1590 transitions. [2021-11-05 12:09:56,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-05 12:09:56,948 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:09:56,948 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] [2021-11-05 12:09:56,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-05 12:09:56,948 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:09:56,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:09:56,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1374522805, now seen corresponding path program 1 times [2021-11-05 12:09:56,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:09:56,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672755988] [2021-11-05 12:09:56,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:09:56,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:09:58,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:09:58,777 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 12:09:58,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:09:58,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672755988] [2021-11-05 12:09:58,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672755988] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:09:58,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:09:58,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:09:58,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070014983] [2021-11-05 12:09:58,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:09:58,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:09:58,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:09:58,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:09:58,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:09:58,779 INFO L87 Difference]: Start difference. First operand 1430 states and 1590 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:10:00,842 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 12:10:02,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:10:02,371 INFO L93 Difference]: Finished difference Result 1454 states and 1611 transitions. [2021-11-05 12:10:02,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:10:02,371 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-05 12:10:02,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:10:02,373 INFO L225 Difference]: With dead ends: 1454 [2021-11-05 12:10:02,373 INFO L226 Difference]: Without dead ends: 1449 [2021-11-05 12:10:02,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 194.84ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:10:02,374 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 363 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3168.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 1853 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.75ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3355.83ms IncrementalHoareTripleChecker+Time [2021-11-05 12:10:02,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 1853 Invalid, 356 Unknown, 0 Unchecked, 4.75ms Time], IncrementalHoareTripleChecker [2 Valid, 353 Invalid, 1 Unknown, 0 Unchecked, 3355.83ms Time] [2021-11-05 12:10:02,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2021-11-05 12:10:02,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 1435. [2021-11-05 12:10:02,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1435 states, 1418 states have (on average 1.124823695345557) internal successors, (1595), 1434 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states 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 12:10:02,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1435 states to 1435 states and 1595 transitions. [2021-11-05 12:10:02,451 INFO L78 Accepts]: Start accepts. Automaton has 1435 states and 1595 transitions. Word has length 104 [2021-11-05 12:10:02,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:10:02,451 INFO L470 AbstractCegarLoop]: Abstraction has 1435 states and 1595 transitions. [2021-11-05 12:10:02,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:10:02,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1435 states and 1595 transitions. [2021-11-05 12:10:02,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-05 12:10:02,452 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:10:02,452 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] [2021-11-05 12:10:02,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-05 12:10:02,453 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:10:02,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:10:02,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1341945069, now seen corresponding path program 1 times [2021-11-05 12:10:02,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:10:02,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994898177] [2021-11-05 12:10:02,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:10:02,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:10:02,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:10:03,074 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 12:10:03,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:10:03,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994898177] [2021-11-05 12:10:03,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994898177] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:10:03,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:10:03,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 12:10:03,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125735452] [2021-11-05 12:10:03,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:10:03,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 12:10:03,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:10:03,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 12:10:03,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:10:03,076 INFO L87 Difference]: Start difference. First operand 1435 states and 1595 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:10:05,128 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:10:07,225 WARN L515 Checker$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 12:10:08,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:10:08,519 INFO L93 Difference]: Finished difference Result 1468 states and 1627 transitions. [2021-11-05 12:10:08,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 12:10:08,520 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-05 12:10:08,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:10:08,521 INFO L225 Difference]: With dead ends: 1468 [2021-11-05 12:10:08,521 INFO L226 Difference]: Without dead ends: 1320 [2021-11-05 12:10:08,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 186.44ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:10:08,522 INFO L933 BasicCegarLoop]: 432 mSDtfsCounter, 253 mSDsluCounter, 1462 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 10 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4937.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 1894 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.14ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5212.41ms IncrementalHoareTripleChecker+Time [2021-11-05 12:10:08,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 1894 Invalid, 323 Unknown, 0 Unchecked, 5.14ms Time], IncrementalHoareTripleChecker [10 Valid, 311 Invalid, 2 Unknown, 0 Unchecked, 5212.41ms Time] [2021-11-05 12:10:08,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2021-11-05 12:10:08,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1312. [2021-11-05 12:10:08,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1312 states, 1295 states have (on average 1.1312741312741312) internal successors, (1465), 1311 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states 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 12:10:08,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1465 transitions. [2021-11-05 12:10:08,593 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 1465 transitions. Word has length 106 [2021-11-05 12:10:08,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:10:08,594 INFO L470 AbstractCegarLoop]: Abstraction has 1312 states and 1465 transitions. [2021-11-05 12:10:08,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:10:08,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 1465 transitions. [2021-11-05 12:10:08,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-05 12:10:08,595 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:10:08,595 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] [2021-11-05 12:10:08,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-05 12:10:08,595 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:10:08,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:10:08,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1774066147, now seen corresponding path program 1 times [2021-11-05 12:10:08,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:10:08,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179211208] [2021-11-05 12:10:08,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:10:08,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:10:08,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:10:09,235 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 12:10:09,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:10:09,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179211208] [2021-11-05 12:10:09,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179211208] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:10:09,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:10:09,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 12:10:09,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935353172] [2021-11-05 12:10:09,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:10:09,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 12:10:09,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:10:09,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 12:10:09,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:10:09,236 INFO L87 Difference]: Start difference. First operand 1312 states and 1465 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 12:10:11,289 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:10:13,387 WARN L515 Checker$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 12:10:15,492 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:10:17,564 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:10:19,662 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 12:10:22,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:10:22,858 INFO L93 Difference]: Finished difference Result 1442 states and 1602 transitions. [2021-11-05 12:10:22,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 12:10:22,859 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2021-11-05 12:10:22,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:10:22,860 INFO L225 Difference]: With dead ends: 1442 [2021-11-05 12:10:22,860 INFO L226 Difference]: Without dead ends: 1313 [2021-11-05 12:10:22,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 372.70ms TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-11-05 12:10:22,861 INFO L933 BasicCegarLoop]: 600 mSDtfsCounter, 690 mSDsluCounter, 3199 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 12 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12678.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 3799 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.14ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13319.65ms IncrementalHoareTripleChecker+Time [2021-11-05 12:10:22,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 3799 Invalid, 863 Unknown, 0 Unchecked, 12.14ms Time], IncrementalHoareTripleChecker [12 Valid, 846 Invalid, 5 Unknown, 0 Unchecked, 13319.65ms Time] [2021-11-05 12:10:22,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2021-11-05 12:10:22,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1290. [2021-11-05 12:10:22,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1273 states have (on average 1.1319717203456403) internal successors, (1441), 1289 states have internal predecessors, (1441), 0 states have call successors, (0), 0 states 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 12:10:22,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 1441 transitions. [2021-11-05 12:10:22,938 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 1441 transitions. Word has length 112 [2021-11-05 12:10:22,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:10:22,938 INFO L470 AbstractCegarLoop]: Abstraction has 1290 states and 1441 transitions. [2021-11-05 12:10:22,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 12:10:22,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 1441 transitions. [2021-11-05 12:10:22,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-05 12:10:22,939 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:10:22,939 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] [2021-11-05 12:10:22,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-05 12:10:22,940 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:10:22,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:10:22,941 INFO L85 PathProgramCache]: Analyzing trace with hash 2027049217, now seen corresponding path program 1 times [2021-11-05 12:10:22,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:10:22,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018673633] [2021-11-05 12:10:22,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:10:22,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:10:23,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:10:23,591 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 12:10:23,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:10:23,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018673633] [2021-11-05 12:10:23,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018673633] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:10:23,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:10:23,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 12:10:23,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784644961] [2021-11-05 12:10:23,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:10:23,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 12:10:23,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:10:23,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 12:10:23,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:10:23,593 INFO L87 Difference]: Start difference. First operand 1290 states and 1441 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 12:10:25,651 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 12:10:27,776 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:10:29,823 WARN L515 Checker$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 12:10:31,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:10:31,682 INFO L93 Difference]: Finished difference Result 1669 states and 1860 transitions. [2021-11-05 12:10:31,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 12:10:31,682 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2021-11-05 12:10:31,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:10:31,684 INFO L225 Difference]: With dead ends: 1669 [2021-11-05 12:10:31,684 INFO L226 Difference]: Without dead ends: 1465 [2021-11-05 12:10:31,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 114.45ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:10:31,685 INFO L933 BasicCegarLoop]: 736 mSDtfsCounter, 413 mSDsluCounter, 2285 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7563.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 3021 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.46ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7932.68ms IncrementalHoareTripleChecker+Time [2021-11-05 12:10:31,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [413 Valid, 3021 Invalid, 549 Unknown, 0 Unchecked, 5.46ms Time], IncrementalHoareTripleChecker [6 Valid, 540 Invalid, 3 Unknown, 0 Unchecked, 7932.68ms Time] [2021-11-05 12:10:31,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1465 states. [2021-11-05 12:10:31,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1465 to 1229. [2021-11-05 12:10:31,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 1212 states have (on average 1.1287128712871286) internal successors, (1368), 1228 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states 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 12:10:31,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1368 transitions. [2021-11-05 12:10:31,750 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1368 transitions. Word has length 112 [2021-11-05 12:10:31,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:10:31,750 INFO L470 AbstractCegarLoop]: Abstraction has 1229 states and 1368 transitions. [2021-11-05 12:10:31,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 12:10:31,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1368 transitions. [2021-11-05 12:10:31,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-05 12:10:31,752 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:10:31,752 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 12:10:31,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-05 12:10:31,752 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:10:31,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:10:31,752 INFO L85 PathProgramCache]: Analyzing trace with hash -66625064, now seen corresponding path program 1 times [2021-11-05 12:10:31,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:10:31,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303183419] [2021-11-05 12:10:31,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:10:31,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:10:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:10:32,417 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 12:10:32,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:10:32,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303183419] [2021-11-05 12:10:32,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303183419] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:10:32,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:10:32,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 12:10:32,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037082403] [2021-11-05 12:10:32,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:10:32,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 12:10:32,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:10:32,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 12:10:32,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:10:32,419 INFO L87 Difference]: Start difference. First operand 1229 states and 1368 transitions. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 12:10:34,472 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:10:36,571 WARN L515 Checker$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 12:10:38,721 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:10:40,819 WARN L515 Checker$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 12:10:44,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:10:44,915 INFO L93 Difference]: Finished difference Result 1712 states and 1904 transitions. [2021-11-05 12:10:44,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-05 12:10:44,915 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 12:10:44,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:10:44,917 INFO L225 Difference]: With dead ends: 1712 [2021-11-05 12:10:44,917 INFO L226 Difference]: Without dead ends: 1653 [2021-11-05 12:10:44,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1026.09ms TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2021-11-05 12:10:44,918 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 1934 mSDsluCounter, 2447 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 84 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10915.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1934 SdHoareTripleChecker+Valid, 2984 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.59ms SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11520.18ms IncrementalHoareTripleChecker+Time [2021-11-05 12:10:44,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1934 Valid, 2984 Invalid, 953 Unknown, 0 Unchecked, 15.59ms Time], IncrementalHoareTripleChecker [84 Valid, 865 Invalid, 4 Unknown, 0 Unchecked, 11520.18ms Time] [2021-11-05 12:10:44,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2021-11-05 12:10:44,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1374. [2021-11-05 12:10:44,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1374 states, 1357 states have (on average 1.1319086219602064) internal successors, (1536), 1373 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states 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 12:10:44,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1374 states to 1374 states and 1536 transitions. [2021-11-05 12:10:44,996 INFO L78 Accepts]: Start accepts. Automaton has 1374 states and 1536 transitions. Word has length 113 [2021-11-05 12:10:44,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:10:44,996 INFO L470 AbstractCegarLoop]: Abstraction has 1374 states and 1536 transitions. [2021-11-05 12:10:44,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 12:10:44,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1374 states and 1536 transitions. [2021-11-05 12:10:44,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-05 12:10:44,998 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:10:44,998 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 12:10:44,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-05 12:10:44,998 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:10:44,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:10:44,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1366385118, now seen corresponding path program 1 times [2021-11-05 12:10:44,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:10:44,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507835724] [2021-11-05 12:10:44,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:10:44,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:10:50,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:10:50,882 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 12:10:50,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:10:50,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507835724] [2021-11-05 12:10:50,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507835724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:10:50,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:10:50,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 12:10:50,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170623460] [2021-11-05 12:10:50,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:10:50,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-05 12:10:50,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:10:50,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-05 12:10:50,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-05 12:10:50,883 INFO L87 Difference]: Start difference. First operand 1374 states and 1536 transitions. Second operand has 12 states, 12 states have (on average 9.416666666666666) 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 12:10:52,942 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:10:55,047 WARN L515 Checker$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 12:10:57,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:10:57,752 INFO L93 Difference]: Finished difference Result 1645 states and 1836 transitions. [2021-11-05 12:10:57,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 12:10:57,753 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.416666666666666) 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 12:10:57,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:10:57,756 INFO L225 Difference]: With dead ends: 1645 [2021-11-05 12:10:57,756 INFO L226 Difference]: Without dead ends: 1560 [2021-11-05 12:10:57,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 928.16ms TimeCoverageRelationStatistics Valid=127, Invalid=253, Unknown=0, NotChecked=0, Total=380 [2021-11-05 12:10:57,758 INFO L933 BasicCegarLoop]: 521 mSDtfsCounter, 2038 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 70 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5873.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2038 SdHoareTripleChecker+Valid, 2046 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.52ms SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6218.47ms IncrementalHoareTripleChecker+Time [2021-11-05 12:10:57,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2038 Valid, 2046 Invalid, 590 Unknown, 0 Unchecked, 10.52ms Time], IncrementalHoareTripleChecker [70 Valid, 518 Invalid, 2 Unknown, 0 Unchecked, 6218.47ms Time] [2021-11-05 12:10:57,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2021-11-05 12:10:57,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1479. [2021-11-05 12:10:57,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 1462 states have (on average 1.1361149110807114) internal successors, (1661), 1478 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states 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 12:10:57,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 1661 transitions. [2021-11-05 12:10:57,875 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 1661 transitions. Word has length 113 [2021-11-05 12:10:57,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:10:57,875 INFO L470 AbstractCegarLoop]: Abstraction has 1479 states and 1661 transitions. [2021-11-05 12:10:57,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) 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 12:10:57,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 1661 transitions. [2021-11-05 12:10:57,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-05 12:10:57,877 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:10:57,877 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:10:57,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-05 12:10:57,877 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:10:57,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:10:57,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1033394390, now seen corresponding path program 1 times [2021-11-05 12:10:57,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:10:57,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213339713] [2021-11-05 12:10:57,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:10:57,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:11:02,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:11:03,092 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 12:11:03,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:11:03,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213339713] [2021-11-05 12:11:03,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213339713] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:11:03,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:11:03,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-05 12:11:03,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470795938] [2021-11-05 12:11:03,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:11:03,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-05 12:11:03,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:11:03,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-05 12:11:03,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-05 12:11:03,093 INFO L87 Difference]: Start difference. First operand 1479 states and 1661 transitions. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 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 12:11:05,149 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:11:07,235 WARN L515 Checker$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 12:11:10,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:11:10,631 INFO L93 Difference]: Finished difference Result 1744 states and 1953 transitions. [2021-11-05 12:11:10,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-05 12:11:10,632 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 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 12:11:10,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:11:10,634 INFO L225 Difference]: With dead ends: 1744 [2021-11-05 12:11:10,634 INFO L226 Difference]: Without dead ends: 1685 [2021-11-05 12:11:10,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1085.09ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-11-05 12:11:10,634 INFO L933 BasicCegarLoop]: 536 mSDtfsCounter, 2328 mSDsluCounter, 2086 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 82 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6385.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2328 SdHoareTripleChecker+Valid, 2622 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.25ms SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6740.89ms IncrementalHoareTripleChecker+Time [2021-11-05 12:11:10,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2328 Valid, 2622 Invalid, 859 Unknown, 0 Unchecked, 11.25ms Time], IncrementalHoareTripleChecker [82 Valid, 775 Invalid, 2 Unknown, 0 Unchecked, 6740.89ms Time] [2021-11-05 12:11:10,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2021-11-05 12:11:10,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1466. [2021-11-05 12:11:10,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1466 states, 1449 states have (on average 1.1387163561076605) internal successors, (1650), 1465 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states 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 12:11:10,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 1650 transitions. [2021-11-05 12:11:10,715 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 1650 transitions. Word has length 113 [2021-11-05 12:11:10,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:11:10,715 INFO L470 AbstractCegarLoop]: Abstraction has 1466 states and 1650 transitions. [2021-11-05 12:11:10,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 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 12:11:10,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 1650 transitions. [2021-11-05 12:11:10,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-05 12:11:10,717 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:11:10,717 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] [2021-11-05 12:11:10,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-05 12:11:10,717 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:11:10,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:11:10,717 INFO L85 PathProgramCache]: Analyzing trace with hash 627319477, now seen corresponding path program 1 times [2021-11-05 12:11:10,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:11:10,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561321556] [2021-11-05 12:11:10,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:11:10,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:11:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:11:18,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:11:18,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:11:18,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561321556] [2021-11-05 12:11:18,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561321556] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:11:18,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:11:18,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-11-05 12:11:18,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059165451] [2021-11-05 12:11:18,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:11:18,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-05 12:11:18,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:11:18,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-05 12:11:18,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2021-11-05 12:11:18,397 INFO L87 Difference]: Start difference. First operand 1466 states and 1650 transitions. Second operand has 27 states, 27 states have (on average 4.2592592592592595) internal successors, (115), 27 states have internal predecessors, (115), 0 states have call successors, (0), 0 states 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 12:11:20,450 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:11:22,556 WARN L515 Checker$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 12:11:24,669 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:11:26,783 WARN L515 Checker$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 12:11:28,837 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:11:30,920 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:11:33,013 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:11:35,136 WARN L515 Checker$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 12:11:37,247 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:11:39,324 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:11:41,398 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:11:43,513 WARN L515 Checker$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 12:11:45,587 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:12:25,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:12:25,281 INFO L93 Difference]: Finished difference Result 2833 states and 3145 transitions. [2021-11-05 12:12:25,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-11-05 12:12:25,282 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.2592592592592595) internal successors, (115), 27 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2021-11-05 12:12:25,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:12:25,284 INFO L225 Difference]: With dead ends: 2833 [2021-11-05 12:12:25,284 INFO L226 Difference]: Without dead ends: 2713 [2021-11-05 12:12:25,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3815 ImplicationChecksByTransitivity, 25839.98ms TimeCoverageRelationStatistics Valid=1950, Invalid=9822, Unknown=0, NotChecked=0, Total=11772 [2021-11-05 12:12:25,287 INFO L933 BasicCegarLoop]: 625 mSDtfsCounter, 9244 mSDsluCounter, 7200 mSDsCounter, 0 mSdLazyCounter, 3844 mSolverCounterSat, 452 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40560.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9244 SdHoareTripleChecker+Valid, 7825 SdHoareTripleChecker+Invalid, 4309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 69.98ms SdHoareTripleChecker+Time, 452 IncrementalHoareTripleChecker+Valid, 3844 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42761.96ms IncrementalHoareTripleChecker+Time [2021-11-05 12:12:25,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9244 Valid, 7825 Invalid, 4309 Unknown, 0 Unchecked, 69.98ms Time], IncrementalHoareTripleChecker [452 Valid, 3844 Invalid, 13 Unknown, 0 Unchecked, 42761.96ms Time] [2021-11-05 12:12:25,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2021-11-05 12:12:25,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 1488. [2021-11-05 12:12:25,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1471 states have (on average 1.1373215499660094) internal successors, (1673), 1487 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states 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 12:12:25,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 1673 transitions. [2021-11-05 12:12:25,380 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 1673 transitions. Word has length 115 [2021-11-05 12:12:25,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:12:25,380 INFO L470 AbstractCegarLoop]: Abstraction has 1488 states and 1673 transitions. [2021-11-05 12:12:25,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.2592592592592595) internal successors, (115), 27 states have internal predecessors, (115), 0 states have call successors, (0), 0 states 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 12:12:25,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 1673 transitions. [2021-11-05 12:12:25,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-05 12:12:25,381 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:12:25,381 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] [2021-11-05 12:12:25,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-05 12:12:25,382 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:12:25,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:12:25,382 INFO L85 PathProgramCache]: Analyzing trace with hash 885484915, now seen corresponding path program 1 times [2021-11-05 12:12:25,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:12:25,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874687066] [2021-11-05 12:12:25,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:12:25,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:12:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:12:33,919 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 12:12:33,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:12:33,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874687066] [2021-11-05 12:12:33,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874687066] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:12:33,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:12:33,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-11-05 12:12:33,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761299622] [2021-11-05 12:12:33,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:12:33,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-05 12:12:33,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:12:33,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-05 12:12:33,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2021-11-05 12:12:33,921 INFO L87 Difference]: Start difference. First operand 1488 states and 1673 transitions. Second operand has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 23 states have internal predecessors, (115), 0 states have call successors, (0), 0 states 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 12:12:35,977 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 12:12:38,111 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:12:40,198 WARN L515 Checker$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 12:12:42,313 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:12:44,416 WARN L515 Checker$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 12:12:46,554 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 12:13:03,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:13:03,563 INFO L93 Difference]: Finished difference Result 2155 states and 2395 transitions. [2021-11-05 12:13:03,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-05 12:13:03,564 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 23 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2021-11-05 12:13:03,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:13:03,566 INFO L225 Difference]: With dead ends: 2155 [2021-11-05 12:13:03,566 INFO L226 Difference]: Without dead ends: 2029 [2021-11-05 12:13:03,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 11834.31ms TimeCoverageRelationStatistics Valid=1054, Invalid=3106, Unknown=0, NotChecked=0, Total=4160 [2021-11-05 12:13:03,583 INFO L933 BasicCegarLoop]: 643 mSDtfsCounter, 8372 mSDsluCounter, 3950 mSDsCounter, 0 mSdLazyCounter, 1812 mSolverCounterSat, 487 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18245.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8372 SdHoareTripleChecker+Valid, 4593 SdHoareTripleChecker+Invalid, 2305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.81ms SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 1812 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19390.89ms IncrementalHoareTripleChecker+Time [2021-11-05 12:13:03,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8372 Valid, 4593 Invalid, 2305 Unknown, 0 Unchecked, 37.81ms Time], IncrementalHoareTripleChecker [487 Valid, 1812 Invalid, 6 Unknown, 0 Unchecked, 19390.89ms Time] [2021-11-05 12:13:03,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2029 states. [2021-11-05 12:13:03,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2029 to 1469. [2021-11-05 12:13:03,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1469 states, 1452 states have (on average 1.1384297520661157) internal successors, (1653), 1468 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states 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 12:13:03,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 1653 transitions. [2021-11-05 12:13:03,707 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 1653 transitions. Word has length 115 [2021-11-05 12:13:03,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:13:03,707 INFO L470 AbstractCegarLoop]: Abstraction has 1469 states and 1653 transitions. [2021-11-05 12:13:03,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 23 states have internal predecessors, (115), 0 states have call successors, (0), 0 states 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 12:13:03,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 1653 transitions. [2021-11-05 12:13:03,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-05 12:13:03,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:13:03,708 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] [2021-11-05 12:13:03,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-05 12:13:03,709 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:13:03,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:13:03,709 INFO L85 PathProgramCache]: Analyzing trace with hash -805690705, now seen corresponding path program 1 times [2021-11-05 12:13:03,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:13:03,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094657011] [2021-11-05 12:13:03,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:13:03,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:13:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:13:14,934 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 12:13:14,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:13:14,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094657011] [2021-11-05 12:13:14,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094657011] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:13:14,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:13:14,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-05 12:13:14,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366157084] [2021-11-05 12:13:14,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:13:14,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-05 12:13:14,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:13:14,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-05 12:13:14,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2021-11-05 12:13:14,935 INFO L87 Difference]: Start difference. First operand 1469 states and 1653 transitions. Second operand has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states 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 12:13:16,988 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 12:13:19,111 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:13:21,210 WARN L515 Checker$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 12:13:23,306 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:13:25,381 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:13:27,503 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:13:29,598 WARN L515 Checker$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 12:13:31,677 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:13:33,766 WARN L515 Checker$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 12:13:35,883 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:13:37,969 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:13:58,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:13:58,885 INFO L93 Difference]: Finished difference Result 2228 states and 2463 transitions. [2021-11-05 12:13:58,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-05 12:13:58,886 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2021-11-05 12:13:58,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:13:58,888 INFO L225 Difference]: With dead ends: 2228 [2021-11-05 12:13:58,888 INFO L226 Difference]: Without dead ends: 2126 [2021-11-05 12:13:58,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1124 ImplicationChecksByTransitivity, 12329.55ms TimeCoverageRelationStatistics Valid=911, Invalid=3379, Unknown=0, NotChecked=0, Total=4290 [2021-11-05 12:13:58,890 INFO L933 BasicCegarLoop]: 514 mSDtfsCounter, 4515 mSDsluCounter, 6573 mSDsCounter, 0 mSdLazyCounter, 2562 mSolverCounterSat, 227 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31366.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4515 SdHoareTripleChecker+Valid, 7087 SdHoareTripleChecker+Invalid, 2800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.33ms SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 2562 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33138.22ms IncrementalHoareTripleChecker+Time [2021-11-05 12:13:58,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4515 Valid, 7087 Invalid, 2800 Unknown, 0 Unchecked, 46.33ms Time], IncrementalHoareTripleChecker [227 Valid, 2562 Invalid, 11 Unknown, 0 Unchecked, 33138.22ms Time] [2021-11-05 12:13:58,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2021-11-05 12:13:58,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 1496. [2021-11-05 12:13:58,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 1479 states have (on average 1.1359026369168357) internal successors, (1680), 1495 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states 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 12:13:58,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 1680 transitions. [2021-11-05 12:13:58,988 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 1680 transitions. Word has length 115 [2021-11-05 12:13:58,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:13:58,988 INFO L470 AbstractCegarLoop]: Abstraction has 1496 states and 1680 transitions. [2021-11-05 12:13:58,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 21 states have internal predecessors, (115), 0 states have call successors, (0), 0 states 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 12:13:58,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 1680 transitions. [2021-11-05 12:13:58,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-05 12:13:58,989 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:13:58,989 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] [2021-11-05 12:13:58,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-05 12:13:58,990 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:13:58,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:13:58,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1301722129, now seen corresponding path program 1 times [2021-11-05 12:13:58,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:13:58,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637474003] [2021-11-05 12:13:58,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:13:58,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:14:09,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:14:13,698 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 12:14:13,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:14:13,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637474003] [2021-11-05 12:14:13,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637474003] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:14:13,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:14:13,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-05 12:14:13,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390089461] [2021-11-05 12:14:13,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:14:13,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-05 12:14:13,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:14:13,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-05 12:14:13,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=725, Unknown=0, NotChecked=0, Total=812 [2021-11-05 12:14:13,700 INFO L87 Difference]: Start difference. First operand 1496 states and 1680 transitions. Second operand has 29 states, 29 states have (on average 3.9655172413793105) internal successors, (115), 28 states have internal predecessors, (115), 0 states have call successors, (0), 0 states 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 12:14:15,761 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:14:17,931 WARN L515 Checker$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 12:14:20,025 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:14:22,125 WARN L515 Checker$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 12:14:24,239 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:14:26,318 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:14:28,423 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:14:30,519 WARN L515 Checker$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 12:14:32,648 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:14:46,270 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:15:04,522 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:15:13,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:15:13,417 INFO L93 Difference]: Finished difference Result 2173 states and 2408 transitions. [2021-11-05 12:15:13,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-11-05 12:15:13,418 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.9655172413793105) internal successors, (115), 28 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2021-11-05 12:15:13,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:15:13,420 INFO L225 Difference]: With dead ends: 2173 [2021-11-05 12:15:13,421 INFO L226 Difference]: Without dead ends: 2071 [2021-11-05 12:15:13,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1995 ImplicationChecksByTransitivity, 23634.46ms TimeCoverageRelationStatistics Valid=1342, Invalid=5968, Unknown=0, NotChecked=0, Total=7310 [2021-11-05 12:15:13,423 INFO L933 BasicCegarLoop]: 511 mSDtfsCounter, 4825 mSDsluCounter, 5863 mSDsCounter, 0 mSdLazyCounter, 2661 mSolverCounterSat, 239 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36765.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4825 SdHoareTripleChecker+Valid, 6374 SdHoareTripleChecker+Invalid, 2911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 49.84ms SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 2661 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38640.03ms IncrementalHoareTripleChecker+Time [2021-11-05 12:15:13,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4825 Valid, 6374 Invalid, 2911 Unknown, 0 Unchecked, 49.84ms Time], IncrementalHoareTripleChecker [239 Valid, 2661 Invalid, 11 Unknown, 0 Unchecked, 38640.03ms Time] [2021-11-05 12:15:13,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2021-11-05 12:15:13,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 1476. [2021-11-05 12:15:13,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1459 states have (on average 1.13776559287183) internal successors, (1660), 1475 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states 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 12:15:13,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 1660 transitions. [2021-11-05 12:15:13,547 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 1660 transitions. Word has length 115 [2021-11-05 12:15:13,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:15:13,547 INFO L470 AbstractCegarLoop]: Abstraction has 1476 states and 1660 transitions. [2021-11-05 12:15:13,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.9655172413793105) internal successors, (115), 28 states have internal predecessors, (115), 0 states have call successors, (0), 0 states 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 12:15:13,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 1660 transitions. [2021-11-05 12:15:13,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-05 12:15:13,549 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:15:13,549 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 12:15:13,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-05 12:15:13,549 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:15:13,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:15:13,550 INFO L85 PathProgramCache]: Analyzing trace with hash -860730846, now seen corresponding path program 1 times [2021-11-05 12:15:13,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:15:13,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770890312] [2021-11-05 12:15:13,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:15:13,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:15:15,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:15:16,449 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 12:15:16,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:15:16,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770890312] [2021-11-05 12:15:16,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770890312] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:15:16,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:15:16,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 12:15:16,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943937680] [2021-11-05 12:15:16,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:15:16,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 12:15:16,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:15:16,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 12:15:16,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:15:16,451 INFO L87 Difference]: Start difference. First operand 1476 states and 1660 transitions. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 12:15:18,544 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 12:15:20,720 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 12:15:24,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:15:24,129 INFO L93 Difference]: Finished difference Result 1690 states and 1872 transitions. [2021-11-05 12:15:24,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-05 12:15:24,129 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2021-11-05 12:15:24,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:15:24,131 INFO L225 Difference]: With dead ends: 1690 [2021-11-05 12:15:24,131 INFO L226 Difference]: Without dead ends: 1672 [2021-11-05 12:15:24,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1750.64ms TimeCoverageRelationStatistics Valid=146, Invalid=316, Unknown=0, NotChecked=0, Total=462 [2021-11-05 12:15:24,132 INFO L933 BasicCegarLoop]: 646 mSDtfsCounter, 2379 mSDsluCounter, 2886 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 24 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5774.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2379 SdHoareTripleChecker+Valid, 3532 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.20ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6182.10ms IncrementalHoareTripleChecker+Time [2021-11-05 12:15:24,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2379 Valid, 3532 Invalid, 590 Unknown, 0 Unchecked, 11.20ms Time], IncrementalHoareTripleChecker [24 Valid, 564 Invalid, 2 Unknown, 0 Unchecked, 6182.10ms Time] [2021-11-05 12:15:24,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1672 states. [2021-11-05 12:15:24,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1672 to 1478. [2021-11-05 12:15:24,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1461 states have (on average 1.1375770020533882) internal successors, (1662), 1477 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states 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 12:15:24,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 1662 transitions. [2021-11-05 12:15:24,233 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 1662 transitions. Word has length 116 [2021-11-05 12:15:24,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:15:24,233 INFO L470 AbstractCegarLoop]: Abstraction has 1478 states and 1662 transitions. [2021-11-05 12:15:24,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 12:15:24,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 1662 transitions. [2021-11-05 12:15:24,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-05 12:15:24,234 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:15:24,234 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 12:15:24,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-05 12:15:24,235 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:15:24,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:15:24,235 INFO L85 PathProgramCache]: Analyzing trace with hash -180672476, now seen corresponding path program 1 times [2021-11-05 12:15:24,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:15:24,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447258392] [2021-11-05 12:15:24,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:15:24,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:15:24,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:15:24,650 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 12:15:24,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:15:24,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447258392] [2021-11-05 12:15:24,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447258392] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:15:24,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:15:24,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:15:24,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082167660] [2021-11-05 12:15:24,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:15:24,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:15:24,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:15:24,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:15:24,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:15:24,652 INFO L87 Difference]: Start difference. First operand 1478 states and 1662 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 12:15:26,712 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 12:15:27,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:15:27,639 INFO L93 Difference]: Finished difference Result 2713 states and 3066 transitions. [2021-11-05 12:15:27,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 12:15:27,640 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2021-11-05 12:15:27,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:15:27,641 INFO L225 Difference]: With dead ends: 2713 [2021-11-05 12:15:27,641 INFO L226 Difference]: Without dead ends: 1476 [2021-11-05 12:15:27,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 73.48ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:15:27,642 INFO L933 BasicCegarLoop]: 422 mSDtfsCounter, 52 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 25 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2640.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.98ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2801.66ms IncrementalHoareTripleChecker+Time [2021-11-05 12:15:27,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 1130 Invalid, 213 Unknown, 0 Unchecked, 1.98ms Time], IncrementalHoareTripleChecker [25 Valid, 187 Invalid, 1 Unknown, 0 Unchecked, 2801.66ms Time] [2021-11-05 12:15:27,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2021-11-05 12:15:27,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1476. [2021-11-05 12:15:27,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1459 states have (on average 1.1178889650445512) internal successors, (1631), 1475 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states 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 12:15:27,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 1631 transitions. [2021-11-05 12:15:27,739 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 1631 transitions. Word has length 116 [2021-11-05 12:15:27,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:15:27,740 INFO L470 AbstractCegarLoop]: Abstraction has 1476 states and 1631 transitions. [2021-11-05 12:15:27,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 12:15:27,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 1631 transitions. [2021-11-05 12:15:27,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-05 12:15:27,741 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:15:27,741 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, 1] [2021-11-05 12:15:27,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-05 12:15:27,741 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-05 12:15:27,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:15:27,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1144641124, now seen corresponding path program 1 times [2021-11-05 12:15:27,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:15:27,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18263692] [2021-11-05 12:15:27,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:15:27,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:15:31,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:15:32,350 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 12:15:32,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:15:32,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18263692] [2021-11-05 12:15:32,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18263692] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:15:32,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:15:32,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-05 12:15:32,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016696375] [2021-11-05 12:15:32,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:15:32,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-05 12:15:32,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:15:32,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-05 12:15:32,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-11-05 12:15:32,352 INFO L87 Difference]: Start difference. First operand 1476 states and 1631 transitions. Second operand has 15 states, 15 states have (on average 7.8) internal successors, (117), 15 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:15:34,465 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:15:36,578 WARN L515 Checker$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 12:15:38,654 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:15:40,788 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15