./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_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 4fce72e4c86270281dd05ead367908aebeea58cd11d1d4da51b0e6a5af67a67d --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 08:47:40,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:47:40,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:47:40,832 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:47:40,833 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:47:40,834 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:47:40,837 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:47:40,839 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:47:40,840 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:47:40,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:47:40,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:47:40,845 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:47:40,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:47:40,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:47:40,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:47:40,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:47:40,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:47:40,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:47:40,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:47:40,859 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:47:40,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:47:40,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:47:40,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:47:40,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:47:40,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:47:40,867 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:47:40,868 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:47:40,869 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:47:40,869 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:47:40,870 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:47:40,870 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:47:40,871 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:47:40,872 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:47:40,873 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:47:40,874 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:47:40,875 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:47:40,876 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:47:40,877 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:47:40,877 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:47:40,877 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:47:40,878 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:47:40,880 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 08:47:40,909 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:47:40,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:47:40,932 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:47:40,932 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:47:40,934 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:47:40,934 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:47:40,934 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:47:40,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:47:40,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:47:40,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:47:40,935 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:47:40,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:47:40,936 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:47:40,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:47:40,936 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:47:40,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:47:40,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:47:40,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:47:40,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:47:40,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:47:40,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:47:40,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:47:40,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:47:40,937 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:47:40,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:47:40,938 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 08:47:40,938 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 08:47:40,938 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:47:40,938 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:47:40,938 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fce72e4c86270281dd05ead367908aebeea58cd11d1d4da51b0e6a5af67a67d [2021-11-07 08:47:41,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:47:41,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:47:41,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:47:41,208 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:47:41,209 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:47:41,209 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i [2021-11-07 08:47:41,280 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/674c02ad1/366aece4dcd54590a3ea8d4b5e5221a0/FLAGa4bb1fe1d [2021-11-07 08:47:41,938 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:47:41,939 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i [2021-11-07 08:47:41,984 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/674c02ad1/366aece4dcd54590a3ea8d4b5e5221a0/FLAGa4bb1fe1d [2021-11-07 08:47:42,102 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/674c02ad1/366aece4dcd54590a3ea8d4b5e5221a0 [2021-11-07 08:47:42,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:47:42,106 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:47:42,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:47:42,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:47:42,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:47:42,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:47:42" (1/1) ... [2021-11-07 08:47:42,113 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68550f4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:42, skipping insertion in model container [2021-11-07 08:47:42,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:47:42" (1/1) ... [2021-11-07 08:47:42,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:47:42,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:47:42,441 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_reserve_relative_harness.i[4503,4516] [2021-11-07 08:47:42,447 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_reserve_relative_harness.i[4563,4576] [2021-11-07 08:47:42,465 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 08:47:42,469 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 08:47:42,971 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:47:42,980 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:47:42,981 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:47:42,982 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:47:42,983 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:47:42,991 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:47:42,995 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:47:42,997 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:47:42,997 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:47:43,182 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 08:47:43,183 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 08:47:43,184 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 08:47:43,185 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 08:47:43,186 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 08:47:43,186 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 08:47:43,186 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 08:47:43,187 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 08:47:43,187 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 08:47:43,188 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 08:47:43,305 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 08:47:43,316 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:47:43,317 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:47:43,370 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:47:43,371 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:47:43,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:47:43,470 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:47:43,499 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_reserve_relative_harness.i[4503,4516] [2021-11-07 08:47:43,500 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_reserve_relative_harness.i[4563,4576] [2021-11-07 08:47:43,501 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 08:47:43,502 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 08:47:43,525 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:47:43,526 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:47:43,526 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:47:43,526 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:47:43,526 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:47:43,530 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:47:43,530 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:47:43,531 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:47:43,531 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:47:43,558 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 08:47:43,559 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 08:47:43,560 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 08:47:43,560 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 08:47:43,562 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 08:47:43,562 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 08:47:43,563 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 08:47:43,563 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 08:47:43,563 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 08:47:43,564 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 08:47:43,584 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 08:47:43,588 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:47:43,589 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:47:43,636 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:47:43,637 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:47:43,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:47:43,840 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:47:43,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:43 WrapperNode [2021-11-07 08:47:43,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:47:43,841 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:47:43,841 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:47:43,842 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:47:43,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:43" (1/1) ... [2021-11-07 08:47:43,912 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:43" (1/1) ... [2021-11-07 08:47:43,997 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:47:43,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:47:43,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:47:43,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:47:44,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:43" (1/1) ... [2021-11-07 08:47:44,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:43" (1/1) ... [2021-11-07 08:47:44,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:43" (1/1) ... [2021-11-07 08:47:44,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:43" (1/1) ... [2021-11-07 08:47:44,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:43" (1/1) ... [2021-11-07 08:47:44,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:43" (1/1) ... [2021-11-07 08:47:44,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:43" (1/1) ... [2021-11-07 08:47:44,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:47:44,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:47:44,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:47:44,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:47:44,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:43" (1/1) ... [2021-11-07 08:47:44,110 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:47:44,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 08:47:44,139 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 08:47:44,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 08:47:44,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 08:47:44,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 08:47:44,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 08:47:44,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 08:47:44,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:47:44,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:47:44,170 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-07 08:47:44,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:47:44,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 08:47:44,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 08:47:44,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 08:47:44,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 08:47:51,795 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:47:51,796 INFO L299 CfgBuilder]: Removed 118 assume(true) statements. [2021-11-07 08:47:51,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:47:51 BoogieIcfgContainer [2021-11-07 08:47:51,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:47:51,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:47:51,807 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:47:51,811 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:47:51,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:47:42" (1/3) ... [2021-11-07 08:47:51,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@275c7361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:47:51, skipping insertion in model container [2021-11-07 08:47:51,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:43" (2/3) ... [2021-11-07 08:47:51,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@275c7361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:47:51, skipping insertion in model container [2021-11-07 08:47:51,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:47:51" (3/3) ... [2021-11-07 08:47:51,815 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_reserve_relative_harness.i [2021-11-07 08:47:51,822 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:47:51,823 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-07 08:47:51,866 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:47:51,875 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 08:47:51,875 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-07 08:47:51,910 INFO L276 IsEmpty]: Start isEmpty. Operand has 232 states, 224 states have (on average 1.4642857142857142) internal successors, (328), 231 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:47:51,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-07 08:47:51,915 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:47:51,915 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] [2021-11-07 08:47:51,916 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:47:51,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:47:51,919 INFO L85 PathProgramCache]: Analyzing trace with hash -473287577, now seen corresponding path program 1 times [2021-11-07 08:47:51,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:47:51,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500097818] [2021-11-07 08:47:51,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:47:51,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:47:52,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:47:52,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:47:52,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:47:52,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500097818] [2021-11-07 08:47:52,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500097818] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:47:52,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:47:52,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 08:47:52,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567959022] [2021-11-07 08:47:52,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:47:52,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 08:47:52,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:47:52,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 08:47:52,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:47:52,444 INFO L87 Difference]: Start difference. First operand has 232 states, 224 states have (on average 1.4642857142857142) internal successors, (328), 231 states have internal predecessors, (328), 0 states have call successors, (0), 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 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:47:52,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:47:52,477 INFO L93 Difference]: Finished difference Result 457 states and 647 transitions. [2021-11-07 08:47:52,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 08:47:52,479 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-11-07 08:47:52,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:47:52,486 INFO L225 Difference]: With dead ends: 457 [2021-11-07 08:47:52,486 INFO L226 Difference]: Without dead ends: 227 [2021-11-07 08:47:52,490 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 [2021-11-07 08:47:52,493 INFO L933 BasicCegarLoop]: 306 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, 306 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.22ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 08:47:52,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 2.22ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 08:47:52,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-11-07 08:47:52,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2021-11-07 08:47:52,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 220 states have (on average 1.3681818181818182) internal successors, (301), 226 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:47:52,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 301 transitions. [2021-11-07 08:47:52,552 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 301 transitions. Word has length 22 [2021-11-07 08:47:52,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:47:52,553 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 301 transitions. [2021-11-07 08:47:52,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:47:52,554 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 301 transitions. [2021-11-07 08:47:52,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-07 08:47:52,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:47:52,555 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:47:52,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 08:47:52,556 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:47:52,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:47:52,556 INFO L85 PathProgramCache]: Analyzing trace with hash -2061635479, now seen corresponding path program 1 times [2021-11-07 08:47:52,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:47:52,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691157884] [2021-11-07 08:47:52,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:47:52,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:47:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:47:52,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:47:52,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:47:52,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691157884] [2021-11-07 08:47:52,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691157884] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:47:52,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:47:52,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:47:52,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578271973] [2021-11-07 08:47:52,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:47:52,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:47:52,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:47:52,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:47:52,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:47:52,814 INFO L87 Difference]: Start difference. First operand 227 states and 301 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:47:52,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:47:52,976 INFO L93 Difference]: Finished difference Result 431 states and 571 transitions. [2021-11-07 08:47:52,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:47:52,977 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-11-07 08:47:52,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:47:52,978 INFO L225 Difference]: With dead ends: 431 [2021-11-07 08:47:52,978 INFO L226 Difference]: Without dead ends: 227 [2021-11-07 08:47:52,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.67ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:47:52,979 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 284 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 120.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.26ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 136.85ms IncrementalHoareTripleChecker+Time [2021-11-07 08:47:52,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 414 Invalid, 47 Unknown, 0 Unchecked, 5.26ms Time], IncrementalHoareTripleChecker [8 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 136.85ms Time] [2021-11-07 08:47:52,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-11-07 08:47:52,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2021-11-07 08:47:52,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 220 states have (on average 1.3590909090909091) internal successors, (299), 226 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:47:52,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 299 transitions. [2021-11-07 08:47:52,986 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 299 transitions. Word has length 22 [2021-11-07 08:47:52,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:47:52,986 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 299 transitions. [2021-11-07 08:47:52,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:47:52,986 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 299 transitions. [2021-11-07 08:47:52,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-07 08:47:52,987 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:47:52,987 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] [2021-11-07 08:47:52,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 08:47:52,987 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:47:52,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:47:52,988 INFO L85 PathProgramCache]: Analyzing trace with hash 926477308, now seen corresponding path program 1 times [2021-11-07 08:47:52,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:47:52,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467724507] [2021-11-07 08:47:52,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:47:52,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:47:53,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:47:53,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:47:53,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:47:53,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467724507] [2021-11-07 08:47:53,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467724507] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:47:53,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:47:53,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:47:53,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404853048] [2021-11-07 08:47:53,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:47:53,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:47:53,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:47:53,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:47:53,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:47:53,256 INFO L87 Difference]: Start difference. First operand 227 states and 299 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:47:53,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:47:53,758 INFO L93 Difference]: Finished difference Result 616 states and 829 transitions. [2021-11-07 08:47:53,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:47:53,759 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-11-07 08:47:53,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:47:53,761 INFO L225 Difference]: With dead ends: 616 [2021-11-07 08:47:53,761 INFO L226 Difference]: Without dead ends: 403 [2021-11-07 08:47:53,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.10ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:47:53,766 INFO L933 BasicCegarLoop]: 437 mSDtfsCounter, 252 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 411.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.83ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 449.12ms IncrementalHoareTripleChecker+Time [2021-11-07 08:47:53,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 1022 Invalid, 173 Unknown, 0 Unchecked, 5.83ms Time], IncrementalHoareTripleChecker [29 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 449.12ms Time] [2021-11-07 08:47:53,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-11-07 08:47:53,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 243. [2021-11-07 08:47:53,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 236 states have (on average 1.3347457627118644) internal successors, (315), 242 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:47:53,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 315 transitions. [2021-11-07 08:47:53,786 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 315 transitions. Word has length 28 [2021-11-07 08:47:53,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:47:53,787 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 315 transitions. [2021-11-07 08:47:53,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:47:53,787 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 315 transitions. [2021-11-07 08:47:53,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-07 08:47:53,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:47:53,788 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] [2021-11-07 08:47:53,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 08:47:53,788 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:47:53,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:47:53,789 INFO L85 PathProgramCache]: Analyzing trace with hash -94591046, now seen corresponding path program 1 times [2021-11-07 08:47:53,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:47:53,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93332710] [2021-11-07 08:47:53,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:47:53,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:47:53,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:47:54,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:47:54,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:47:54,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93332710] [2021-11-07 08:47:54,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93332710] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:47:54,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:47:54,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:47:54,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667849992] [2021-11-07 08:47:54,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:47:54,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:47:54,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:47:54,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:47:54,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:47:54,008 INFO L87 Difference]: Start difference. First operand 243 states and 315 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:47:54,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:47:54,493 INFO L93 Difference]: Finished difference Result 542 states and 711 transitions. [2021-11-07 08:47:54,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:47:54,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-11-07 08:47:54,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:47:54,495 INFO L225 Difference]: With dead ends: 542 [2021-11-07 08:47:54,495 INFO L226 Difference]: Without dead ends: 323 [2021-11-07 08:47:54,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.59ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:47:54,497 INFO L933 BasicCegarLoop]: 354 mSDtfsCounter, 187 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 401.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.74ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 437.54ms IncrementalHoareTripleChecker+Time [2021-11-07 08:47:54,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 784 Invalid, 162 Unknown, 0 Unchecked, 4.74ms Time], IncrementalHoareTripleChecker [29 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 437.54ms Time] [2021-11-07 08:47:54,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-11-07 08:47:54,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 259. [2021-11-07 08:47:54,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 252 states have (on average 1.3134920634920635) internal successors, (331), 258 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:47:54,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 331 transitions. [2021-11-07 08:47:54,505 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 331 transitions. Word has length 28 [2021-11-07 08:47:54,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:47:54,505 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 331 transitions. [2021-11-07 08:47:54,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:47:54,505 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 331 transitions. [2021-11-07 08:47:54,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-07 08:47:54,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:47:54,506 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] [2021-11-07 08:47:54,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 08:47:54,506 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:47:54,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:47:54,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1374345282, now seen corresponding path program 1 times [2021-11-07 08:47:54,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:47:54,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566638448] [2021-11-07 08:47:54,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:47:54,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:47:54,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:47:54,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:47:54,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:47:54,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566638448] [2021-11-07 08:47:54,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566638448] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:47:54,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:47:54,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:47:54,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043057207] [2021-11-07 08:47:54,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:47:54,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:47:54,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:47:54,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:47:54,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:47:54,815 INFO L87 Difference]: Start difference. First operand 259 states and 331 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:47:55,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:47:55,027 INFO L93 Difference]: Finished difference Result 530 states and 674 transitions. [2021-11-07 08:47:55,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 08:47:55,028 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-11-07 08:47:55,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:47:55,029 INFO L225 Difference]: With dead ends: 530 [2021-11-07 08:47:55,029 INFO L226 Difference]: Without dead ends: 497 [2021-11-07 08:47:55,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 128.68ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:47:55,030 INFO L933 BasicCegarLoop]: 472 mSDtfsCounter, 350 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 105.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.95ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 114.20ms IncrementalHoareTripleChecker+Time [2021-11-07 08:47:55,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 1690 Invalid, 43 Unknown, 0 Unchecked, 2.95ms Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 114.20ms Time] [2021-11-07 08:47:55,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2021-11-07 08:47:55,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 261. [2021-11-07 08:47:55,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 254 states have (on average 1.311023622047244) internal successors, (333), 260 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:47:55,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 333 transitions. [2021-11-07 08:47:55,039 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 333 transitions. Word has length 28 [2021-11-07 08:47:55,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:47:55,040 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 333 transitions. [2021-11-07 08:47:55,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:47:55,040 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 333 transitions. [2021-11-07 08:47:55,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-07 08:47:55,041 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:47:55,041 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:47:55,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 08:47:55,042 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:47:55,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:47:55,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1363870332, now seen corresponding path program 1 times [2021-11-07 08:47:55,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:47:55,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756301218] [2021-11-07 08:47:55,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:47:55,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:47:55,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:47:55,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:47:55,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:47:55,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756301218] [2021-11-07 08:47:55,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756301218] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:47:55,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:47:55,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 08:47:55,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296554060] [2021-11-07 08:47:55,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:47:55,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:47:55,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:47:55,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:47:55,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:47:55,447 INFO L87 Difference]: Start difference. First operand 261 states and 333 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:47:56,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:47:56,396 INFO L93 Difference]: Finished difference Result 412 states and 508 transitions. [2021-11-07 08:47:56,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 08:47:56,397 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-07 08:47:56,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:47:56,398 INFO L225 Difference]: With dead ends: 412 [2021-11-07 08:47:56,398 INFO L226 Difference]: Without dead ends: 395 [2021-11-07 08:47:56,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 241.23ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:47:56,399 INFO L933 BasicCegarLoop]: 398 mSDtfsCounter, 273 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 715.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 1581 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.39ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 772.30ms IncrementalHoareTripleChecker+Time [2021-11-07 08:47:56,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 1581 Invalid, 301 Unknown, 0 Unchecked, 6.39ms Time], IncrementalHoareTripleChecker [47 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 772.30ms Time] [2021-11-07 08:47:56,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-11-07 08:47:56,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 275. [2021-11-07 08:47:56,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 268 states have (on average 1.291044776119403) internal successors, (346), 274 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:47:56,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 346 transitions. [2021-11-07 08:47:56,417 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 346 transitions. Word has length 38 [2021-11-07 08:47:56,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:47:56,417 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 346 transitions. [2021-11-07 08:47:56,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:47:56,418 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 346 transitions. [2021-11-07 08:47:56,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-07 08:47:56,419 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:47:56,419 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] [2021-11-07 08:47:56,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 08:47:56,419 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:47:56,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:47:56,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1721724466, now seen corresponding path program 1 times [2021-11-07 08:47:56,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:47:56,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740059495] [2021-11-07 08:47:56,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:47:56,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:47:56,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:47:56,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:47:56,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:47:56,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740059495] [2021-11-07 08:47:56,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740059495] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:47:56,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:47:56,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 08:47:56,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588811298] [2021-11-07 08:47:56,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:47:56,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 08:47:56,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:47:56,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 08:47:56,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:47:56,724 INFO L87 Difference]: Start difference. First operand 275 states and 346 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:47:57,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:47:57,024 INFO L93 Difference]: Finished difference Result 496 states and 623 transitions. [2021-11-07 08:47:57,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 08:47:57,026 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-07 08:47:57,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:47:57,027 INFO L225 Difference]: With dead ends: 496 [2021-11-07 08:47:57,027 INFO L226 Difference]: Without dead ends: 275 [2021-11-07 08:47:57,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 241.62ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-07 08:47:57,028 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 979 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 141.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.03ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 153.07ms IncrementalHoareTripleChecker+Time [2021-11-07 08:47:57,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [979 Valid, 435 Invalid, 56 Unknown, 0 Unchecked, 2.03ms Time], IncrementalHoareTripleChecker [10 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 153.07ms Time] [2021-11-07 08:47:57,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-11-07 08:47:57,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2021-11-07 08:47:57,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 268 states have (on average 1.2835820895522387) internal successors, (344), 274 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:47:57,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 344 transitions. [2021-11-07 08:47:57,043 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 344 transitions. Word has length 40 [2021-11-07 08:47:57,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:47:57,044 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 344 transitions. [2021-11-07 08:47:57,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:47:57,044 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 344 transitions. [2021-11-07 08:47:57,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 08:47:57,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:47:57,047 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:47:57,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 08:47:57,048 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:47:57,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:47:57,049 INFO L85 PathProgramCache]: Analyzing trace with hash -378295308, now seen corresponding path program 1 times [2021-11-07 08:47:57,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:47:57,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236573391] [2021-11-07 08:47:57,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:47:57,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:47:57,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:47:57,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:47:57,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:47:57,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236573391] [2021-11-07 08:47:57,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236573391] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:47:57,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:47:57,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:47:57,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999202520] [2021-11-07 08:47:57,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:47:57,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:47:57,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:47:57,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:47:57,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:47:57,496 INFO L87 Difference]: Start difference. First operand 275 states and 344 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:47:59,543 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:48:00,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:48:00,906 INFO L93 Difference]: Finished difference Result 782 states and 972 transitions. [2021-11-07 08:48:00,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 08:48:00,907 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-07 08:48:00,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:48:00,909 INFO L225 Difference]: With dead ends: 782 [2021-11-07 08:48:00,909 INFO L226 Difference]: Without dead ends: 528 [2021-11-07 08:48:00,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 152.41ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:48:00,910 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 694 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3079.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.76ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3272.46ms IncrementalHoareTripleChecker+Time [2021-11-07 08:48:00,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [694 Valid, 856 Invalid, 378 Unknown, 0 Unchecked, 7.76ms Time], IncrementalHoareTripleChecker [45 Valid, 332 Invalid, 1 Unknown, 0 Unchecked, 3272.46ms Time] [2021-11-07 08:48:00,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-11-07 08:48:00,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 299. [2021-11-07 08:48:00,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 292 states have (on average 1.2602739726027397) internal successors, (368), 298 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:48:00,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 368 transitions. [2021-11-07 08:48:00,922 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 368 transitions. Word has length 42 [2021-11-07 08:48:00,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:48:00,922 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 368 transitions. [2021-11-07 08:48:00,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:48:00,922 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 368 transitions. [2021-11-07 08:48:00,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 08:48:00,925 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:48:00,925 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:48:00,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 08:48:00,925 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:48:00,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:48:00,926 INFO L85 PathProgramCache]: Analyzing trace with hash 301763062, now seen corresponding path program 1 times [2021-11-07 08:48:00,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:48:00,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762973261] [2021-11-07 08:48:00,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:48:00,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:48:02,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:48:03,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:48:03,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:48:03,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762973261] [2021-11-07 08:48:03,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762973261] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:48:03,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:48:03,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 08:48:03,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149909096] [2021-11-07 08:48:03,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:48:03,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 08:48:03,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:48:03,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 08:48:03,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:48:03,073 INFO L87 Difference]: Start difference. First operand 299 states and 368 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:48:05,117 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:48:07,242 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 [] [2021-11-07 08:48:09,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:48:09,283 INFO L93 Difference]: Finished difference Result 860 states and 1059 transitions. [2021-11-07 08:48:09,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 08:48:09,284 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-07 08:48:09,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:48:09,285 INFO L225 Difference]: With dead ends: 860 [2021-11-07 08:48:09,286 INFO L226 Difference]: Without dead ends: 590 [2021-11-07 08:48:09,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 668.21ms TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2021-11-07 08:48:09,287 INFO L933 BasicCegarLoop]: 475 mSDtfsCounter, 858 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 30 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5330.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 1699 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.49ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5648.82ms IncrementalHoareTripleChecker+Time [2021-11-07 08:48:09,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [858 Valid, 1699 Invalid, 531 Unknown, 0 Unchecked, 7.49ms Time], IncrementalHoareTripleChecker [30 Valid, 499 Invalid, 2 Unknown, 0 Unchecked, 5648.82ms Time] [2021-11-07 08:48:09,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-11-07 08:48:09,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 297. [2021-11-07 08:48:09,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 290 states have (on average 1.2586206896551724) internal successors, (365), 296 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:48:09,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 365 transitions. [2021-11-07 08:48:09,298 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 365 transitions. Word has length 42 [2021-11-07 08:48:09,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:48:09,299 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 365 transitions. [2021-11-07 08:48:09,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:48:09,299 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 365 transitions. [2021-11-07 08:48:09,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-07 08:48:09,300 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:48:09,300 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] [2021-11-07 08:48:09,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 08:48:09,300 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:48:09,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:48:09,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1878621098, now seen corresponding path program 1 times [2021-11-07 08:48:09,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:48:09,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913685667] [2021-11-07 08:48:09,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:48:09,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:48:09,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:48:09,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:48:09,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:48:09,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913685667] [2021-11-07 08:48:09,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913685667] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:48:09,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:48:09,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 08:48:09,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367761963] [2021-11-07 08:48:09,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:48:09,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 08:48:09,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:48:09,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 08:48:09,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:48:09,737 INFO L87 Difference]: Start difference. First operand 297 states and 365 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:48:10,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:48:10,664 INFO L93 Difference]: Finished difference Result 691 states and 837 transitions. [2021-11-07 08:48:10,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 08:48:10,665 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-07 08:48:10,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:48:10,666 INFO L225 Difference]: With dead ends: 691 [2021-11-07 08:48:10,666 INFO L226 Difference]: Without dead ends: 420 [2021-11-07 08:48:10,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 194.23ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:48:10,667 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 187 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 749.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 1629 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.63ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 801.72ms IncrementalHoareTripleChecker+Time [2021-11-07 08:48:10,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 1629 Invalid, 361 Unknown, 0 Unchecked, 3.63ms Time], IncrementalHoareTripleChecker [48 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 801.72ms Time] [2021-11-07 08:48:10,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2021-11-07 08:48:10,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 297. [2021-11-07 08:48:10,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 290 states have (on average 1.2551724137931035) internal successors, (364), 296 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:48:10,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 364 transitions. [2021-11-07 08:48:10,676 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 364 transitions. Word has length 46 [2021-11-07 08:48:10,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:48:10,676 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 364 transitions. [2021-11-07 08:48:10,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:48:10,677 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 364 transitions. [2021-11-07 08:48:10,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-07 08:48:10,677 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:48:10,677 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] [2021-11-07 08:48:10,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 08:48:10,677 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:48:10,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:48:10,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1567331845, now seen corresponding path program 1 times [2021-11-07 08:48:10,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:48:10,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883446626] [2021-11-07 08:48:10,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:48:10,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:48:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:48:13,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:48:13,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:48:13,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883446626] [2021-11-07 08:48:13,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883446626] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:48:13,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:48:13,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 08:48:13,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791510445] [2021-11-07 08:48:13,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:48:13,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 08:48:13,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:48:13,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 08:48:13,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 08:48:13,531 INFO L87 Difference]: Start difference. First operand 297 states and 364 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:48:15,575 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:48:18,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:48:18,023 INFO L93 Difference]: Finished difference Result 631 states and 776 transitions. [2021-11-07 08:48:18,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 08:48:18,023 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-07 08:48:18,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:48:18,025 INFO L225 Difference]: With dead ends: 631 [2021-11-07 08:48:18,025 INFO L226 Difference]: Without dead ends: 615 [2021-11-07 08:48:18,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 289.17ms TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-07 08:48:18,026 INFO L933 BasicCegarLoop]: 505 mSDtfsCounter, 760 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 25 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4054.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 2555 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.04ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4327.60ms IncrementalHoareTripleChecker+Time [2021-11-07 08:48:18,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [760 Valid, 2555 Invalid, 816 Unknown, 0 Unchecked, 9.04ms Time], IncrementalHoareTripleChecker [25 Valid, 790 Invalid, 1 Unknown, 0 Unchecked, 4327.60ms Time] [2021-11-07 08:48:18,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-11-07 08:48:18,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 505. [2021-11-07 08:48:18,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 498 states have (on average 1.2610441767068272) internal successors, (628), 504 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:48:18,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 628 transitions. [2021-11-07 08:48:18,081 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 628 transitions. Word has length 48 [2021-11-07 08:48:18,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:48:18,081 INFO L470 AbstractCegarLoop]: Abstraction has 505 states and 628 transitions. [2021-11-07 08:48:18,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:48:18,081 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 628 transitions. [2021-11-07 08:48:18,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-07 08:48:18,082 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:48:18,082 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] [2021-11-07 08:48:18,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 08:48:18,082 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:48:18,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:48:18,083 INFO L85 PathProgramCache]: Analyzing trace with hash 134321663, now seen corresponding path program 1 times [2021-11-07 08:48:18,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:48:18,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532343201] [2021-11-07 08:48:18,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:48:18,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:48:18,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:48:18,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:48:18,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:48:18,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532343201] [2021-11-07 08:48:18,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532343201] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:48:18,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:48:18,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 08:48:18,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964121079] [2021-11-07 08:48:18,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:48:18,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 08:48:18,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:48:18,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 08:48:18,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-07 08:48:18,672 INFO L87 Difference]: Start difference. First operand 505 states and 628 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:48:20,717 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:48:22,828 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:48:25,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:48:25,794 INFO L93 Difference]: Finished difference Result 978 states and 1212 transitions. [2021-11-07 08:48:25,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 08:48:25,795 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-07 08:48:25,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:48:25,798 INFO L225 Difference]: With dead ends: 978 [2021-11-07 08:48:25,798 INFO L226 Difference]: Without dead ends: 971 [2021-11-07 08:48:25,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 597.43ms TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-11-07 08:48:25,799 INFO L933 BasicCegarLoop]: 415 mSDtfsCounter, 398 mSDsluCounter, 2118 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 26 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6275.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 2533 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.41ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6647.78ms IncrementalHoareTripleChecker+Time [2021-11-07 08:48:25,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [398 Valid, 2533 Invalid, 797 Unknown, 0 Unchecked, 9.41ms Time], IncrementalHoareTripleChecker [26 Valid, 769 Invalid, 2 Unknown, 0 Unchecked, 6647.78ms Time] [2021-11-07 08:48:25,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2021-11-07 08:48:25,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 922. [2021-11-07 08:48:25,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 915 states have (on average 1.2644808743169398) internal successors, (1157), 921 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:48:25,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1157 transitions. [2021-11-07 08:48:25,823 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1157 transitions. Word has length 48 [2021-11-07 08:48:25,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:48:25,823 INFO L470 AbstractCegarLoop]: Abstraction has 922 states and 1157 transitions. [2021-11-07 08:48:25,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:48:25,824 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1157 transitions. [2021-11-07 08:48:25,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-07 08:48:25,824 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:48:25,824 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] [2021-11-07 08:48:25,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 08:48:25,825 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:48:25,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:48:25,825 INFO L85 PathProgramCache]: Analyzing trace with hash 814380033, now seen corresponding path program 1 times [2021-11-07 08:48:25,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:48:25,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050970961] [2021-11-07 08:48:25,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:48:25,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:48:25,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:48:26,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:48:26,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:48:26,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050970961] [2021-11-07 08:48:26,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050970961] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:48:26,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:48:26,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:48:26,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235367828] [2021-11-07 08:48:26,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:48:26,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:48:26,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:48:26,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:48:26,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:48:26,108 INFO L87 Difference]: Start difference. First operand 922 states and 1157 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:48:28,158 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 [] [2021-11-07 08:48:29,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:48:29,396 INFO L93 Difference]: Finished difference Result 2236 states and 2814 transitions. [2021-11-07 08:48:29,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:48:29,396 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-07 08:48:29,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:48:29,400 INFO L225 Difference]: With dead ends: 2236 [2021-11-07 08:48:29,400 INFO L226 Difference]: Without dead ends: 1393 [2021-11-07 08:48:29,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 81.75ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:48:29,401 INFO L933 BasicCegarLoop]: 408 mSDtfsCounter, 215 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3009.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.64ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3203.02ms IncrementalHoareTripleChecker+Time [2021-11-07 08:48:29,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 1166 Invalid, 364 Unknown, 0 Unchecked, 3.64ms Time], IncrementalHoareTripleChecker [36 Valid, 327 Invalid, 1 Unknown, 0 Unchecked, 3203.02ms Time] [2021-11-07 08:48:29,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2021-11-07 08:48:29,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 922. [2021-11-07 08:48:29,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 915 states have (on average 1.2382513661202186) internal successors, (1133), 921 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:48:29,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1133 transitions. [2021-11-07 08:48:29,428 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1133 transitions. Word has length 48 [2021-11-07 08:48:29,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:48:29,428 INFO L470 AbstractCegarLoop]: Abstraction has 922 states and 1133 transitions. [2021-11-07 08:48:29,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:48:29,428 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1133 transitions. [2021-11-07 08:48:29,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-07 08:48:29,429 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:48:29,429 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] [2021-11-07 08:48:29,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 08:48:29,429 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:48:29,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:48:29,430 INFO L85 PathProgramCache]: Analyzing trace with hash 156953917, now seen corresponding path program 1 times [2021-11-07 08:48:29,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:48:29,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877580681] [2021-11-07 08:48:29,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:48:29,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:48:32,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:48:32,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:48:32,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:48:32,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877580681] [2021-11-07 08:48:32,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877580681] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:48:32,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:48:32,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 08:48:32,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886465318] [2021-11-07 08:48:32,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:48:32,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 08:48:32,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:48:32,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 08:48:32,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-07 08:48:32,886 INFO L87 Difference]: Start difference. First operand 922 states and 1133 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:48:34,928 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:48:37,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:48:37,646 INFO L93 Difference]: Finished difference Result 1144 states and 1396 transitions. [2021-11-07 08:48:37,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 08:48:37,646 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-07 08:48:37,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:48:37,649 INFO L225 Difference]: With dead ends: 1144 [2021-11-07 08:48:37,649 INFO L226 Difference]: Without dead ends: 1137 [2021-11-07 08:48:37,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 613.08ms TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-11-07 08:48:37,650 INFO L933 BasicCegarLoop]: 412 mSDtfsCounter, 655 mSDsluCounter, 1794 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4105.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 2206 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.88ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4410.93ms IncrementalHoareTripleChecker+Time [2021-11-07 08:48:37,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [655 Valid, 2206 Invalid, 762 Unknown, 0 Unchecked, 8.88ms Time], IncrementalHoareTripleChecker [26 Valid, 735 Invalid, 1 Unknown, 0 Unchecked, 4410.93ms Time] [2021-11-07 08:48:37,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2021-11-07 08:48:37,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 673. [2021-11-07 08:48:37,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 666 states have (on average 1.2402402402402402) internal successors, (826), 672 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:48:37,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 826 transitions. [2021-11-07 08:48:37,673 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 826 transitions. Word has length 48 [2021-11-07 08:48:37,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:48:37,673 INFO L470 AbstractCegarLoop]: Abstraction has 673 states and 826 transitions. [2021-11-07 08:48:37,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:48:37,674 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 826 transitions. [2021-11-07 08:48:37,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-07 08:48:37,674 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:48:37,674 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] [2021-11-07 08:48:37,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 08:48:37,674 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:48:37,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:48:37,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1376295925, now seen corresponding path program 1 times [2021-11-07 08:48:37,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:48:37,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052856099] [2021-11-07 08:48:37,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:48:37,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:48:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:48:37,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:48:37,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:48:37,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052856099] [2021-11-07 08:48:37,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052856099] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:48:37,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:48:37,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:48:37,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529083732] [2021-11-07 08:48:37,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:48:37,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:48:37,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:48:37,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:48:37,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:48:37,853 INFO L87 Difference]: Start difference. First operand 673 states and 826 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:48:38,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:48:38,252 INFO L93 Difference]: Finished difference Result 1172 states and 1428 transitions. [2021-11-07 08:48:38,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:48:38,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-07 08:48:38,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:48:38,254 INFO L225 Difference]: With dead ends: 1172 [2021-11-07 08:48:38,254 INFO L226 Difference]: Without dead ends: 548 [2021-11-07 08:48:38,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.48ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:48:38,255 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 61 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 327.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.44ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 354.40ms IncrementalHoareTripleChecker+Time [2021-11-07 08:48:38,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 779 Invalid, 162 Unknown, 0 Unchecked, 1.44ms Time], IncrementalHoareTripleChecker [28 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 354.40ms Time] [2021-11-07 08:48:38,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-11-07 08:48:38,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 482. [2021-11-07 08:48:38,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 475 states have (on average 1.223157894736842) internal successors, (581), 481 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:48:38,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 581 transitions. [2021-11-07 08:48:38,268 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 581 transitions. Word has length 48 [2021-11-07 08:48:38,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:48:38,268 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 581 transitions. [2021-11-07 08:48:38,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:48:38,268 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 581 transitions. [2021-11-07 08:48:38,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 08:48:38,268 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:48:38,269 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] [2021-11-07 08:48:38,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 08:48:38,269 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:48:38,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:48:38,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1351206458, now seen corresponding path program 1 times [2021-11-07 08:48:38,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:48:38,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625266114] [2021-11-07 08:48:38,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:48:38,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:48:38,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:48:38,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:48:38,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:48:38,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625266114] [2021-11-07 08:48:38,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625266114] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:48:38,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:48:38,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 08:48:38,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568084128] [2021-11-07 08:48:38,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:48:38,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 08:48:38,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:48:38,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 08:48:38,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:48:38,639 INFO L87 Difference]: Start difference. First operand 482 states and 581 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:48:40,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:48:40,192 INFO L93 Difference]: Finished difference Result 752 states and 893 transitions. [2021-11-07 08:48:40,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 08:48:40,193 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-07 08:48:40,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:48:40,195 INFO L225 Difference]: With dead ends: 752 [2021-11-07 08:48:40,195 INFO L226 Difference]: Without dead ends: 731 [2021-11-07 08:48:40,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 440.11ms TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-11-07 08:48:40,195 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 300 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1122.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 1947 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.47ms SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1198.73ms IncrementalHoareTripleChecker+Time [2021-11-07 08:48:40,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 1947 Invalid, 611 Unknown, 0 Unchecked, 5.47ms Time], IncrementalHoareTripleChecker [106 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 1198.73ms Time] [2021-11-07 08:48:40,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2021-11-07 08:48:40,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 496. [2021-11-07 08:48:40,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 489 states have (on average 1.2147239263803682) internal successors, (594), 495 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:48:40,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 594 transitions. [2021-11-07 08:48:40,210 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 594 transitions. Word has length 50 [2021-11-07 08:48:40,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:48:40,211 INFO L470 AbstractCegarLoop]: Abstraction has 496 states and 594 transitions. [2021-11-07 08:48:40,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:48:40,211 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 594 transitions. [2021-11-07 08:48:40,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 08:48:40,211 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:48:40,211 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] [2021-11-07 08:48:40,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-07 08:48:40,212 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:48:40,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:48:40,212 INFO L85 PathProgramCache]: Analyzing trace with hash 541859832, now seen corresponding path program 1 times [2021-11-07 08:48:40,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:48:40,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985157725] [2021-11-07 08:48:40,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:48:40,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:48:40,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:48:40,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:48:40,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:48:40,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985157725] [2021-11-07 08:48:40,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985157725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:48:40,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:48:40,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 08:48:40,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680804722] [2021-11-07 08:48:40,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:48:40,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 08:48:40,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:48:40,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 08:48:40,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:48:40,745 INFO L87 Difference]: Start difference. First operand 496 states and 594 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:48:42,787 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:48:44,895 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:48:47,003 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:48:49,106 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:48:52,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:48:52,865 INFO L93 Difference]: Finished difference Result 891 states and 1034 transitions. [2021-11-07 08:48:52,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 08:48:52,865 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-07 08:48:52,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:48:52,867 INFO L225 Difference]: With dead ends: 891 [2021-11-07 08:48:52,868 INFO L226 Difference]: Without dead ends: 853 [2021-11-07 08:48:52,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 780.10ms TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2021-11-07 08:48:52,868 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 477 mSDsluCounter, 2113 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 51 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10848.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 2542 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.08ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11486.78ms IncrementalHoareTripleChecker+Time [2021-11-07 08:48:52,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [477 Valid, 2542 Invalid, 1227 Unknown, 0 Unchecked, 10.08ms Time], IncrementalHoareTripleChecker [51 Valid, 1172 Invalid, 4 Unknown, 0 Unchecked, 11486.78ms Time] [2021-11-07 08:48:52,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2021-11-07 08:48:52,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 698. [2021-11-07 08:48:52,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 691 states have (on average 1.2141823444283646) internal successors, (839), 697 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:48:52,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 839 transitions. [2021-11-07 08:48:52,916 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 839 transitions. Word has length 50 [2021-11-07 08:48:52,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:48:52,917 INFO L470 AbstractCegarLoop]: Abstraction has 698 states and 839 transitions. [2021-11-07 08:48:52,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:48:52,917 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 839 transitions. [2021-11-07 08:48:52,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 08:48:52,917 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:48:52,918 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:48:52,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-07 08:48:52,918 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:48:52,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:48:52,919 INFO L85 PathProgramCache]: Analyzing trace with hash 816619446, now seen corresponding path program 1 times [2021-11-07 08:48:52,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:48:52,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569139248] [2021-11-07 08:48:52,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:48:52,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:48:54,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:48:55,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:48:55,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:48:55,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569139248] [2021-11-07 08:48:55,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569139248] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:48:55,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:48:55,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-07 08:48:55,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427241577] [2021-11-07 08:48:55,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:48:55,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 08:48:55,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:48:55,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 08:48:55,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-11-07 08:48:55,690 INFO L87 Difference]: Start difference. First operand 698 states and 839 transitions. Second operand has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:48:57,731 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:48:59,853 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:49:14,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:49:14,044 INFO L93 Difference]: Finished difference Result 1316 states and 1554 transitions. [2021-11-07 08:49:14,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-11-07 08:49:14,045 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-07 08:49:14,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:49:14,048 INFO L225 Difference]: With dead ends: 1316 [2021-11-07 08:49:14,048 INFO L226 Difference]: Without dead ends: 1253 [2021-11-07 08:49:14,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1191 ImplicationChecksByTransitivity, 6090.77ms TimeCoverageRelationStatistics Valid=941, Invalid=3889, Unknown=0, NotChecked=0, Total=4830 [2021-11-07 08:49:14,049 INFO L933 BasicCegarLoop]: 499 mSDtfsCounter, 2556 mSDsluCounter, 4654 mSDsCounter, 0 mSdLazyCounter, 3065 mSolverCounterSat, 446 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12038.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2556 SdHoareTripleChecker+Valid, 5153 SdHoareTripleChecker+Invalid, 3513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.27ms SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 3065 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12784.84ms IncrementalHoareTripleChecker+Time [2021-11-07 08:49:14,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2556 Valid, 5153 Invalid, 3513 Unknown, 0 Unchecked, 33.27ms Time], IncrementalHoareTripleChecker [446 Valid, 3065 Invalid, 2 Unknown, 0 Unchecked, 12784.84ms Time] [2021-11-07 08:49:14,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2021-11-07 08:49:14,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 620. [2021-11-07 08:49:14,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 613 states have (on average 1.2185970636215335) internal successors, (747), 619 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:49:14,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 747 transitions. [2021-11-07 08:49:14,067 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 747 transitions. Word has length 50 [2021-11-07 08:49:14,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:49:14,067 INFO L470 AbstractCegarLoop]: Abstraction has 620 states and 747 transitions. [2021-11-07 08:49:14,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:49:14,067 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 747 transitions. [2021-11-07 08:49:14,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 08:49:14,068 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:49:14,068 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] [2021-11-07 08:49:14,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-07 08:49:14,068 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:49:14,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:49:14,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1408081534, now seen corresponding path program 1 times [2021-11-07 08:49:14,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:49:14,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250913195] [2021-11-07 08:49:14,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:49:14,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:49:14,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:49:14,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:49:14,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:49:14,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250913195] [2021-11-07 08:49:14,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250913195] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:49:14,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:49:14,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 08:49:14,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114978062] [2021-11-07 08:49:14,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:49:14,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:49:14,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:49:14,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:49:14,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:49:14,272 INFO L87 Difference]: Start difference. First operand 620 states and 747 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:49:14,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:49:14,583 INFO L93 Difference]: Finished difference Result 879 states and 1034 transitions. [2021-11-07 08:49:14,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 08:49:14,583 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2021-11-07 08:49:14,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:49:14,585 INFO L225 Difference]: With dead ends: 879 [2021-11-07 08:49:14,585 INFO L226 Difference]: Without dead ends: 810 [2021-11-07 08:49:14,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 205.79ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-07 08:49:14,586 INFO L933 BasicCegarLoop]: 464 mSDtfsCounter, 382 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 127.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 2205 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.67ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 136.29ms IncrementalHoareTripleChecker+Time [2021-11-07 08:49:14,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [382 Valid, 2205 Invalid, 58 Unknown, 0 Unchecked, 1.67ms Time], IncrementalHoareTripleChecker [6 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 136.29ms Time] [2021-11-07 08:49:14,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2021-11-07 08:49:14,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 602. [2021-11-07 08:49:14,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 595 states have (on average 1.2084033613445377) internal successors, (719), 601 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:49:14,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 719 transitions. [2021-11-07 08:49:14,603 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 719 transitions. Word has length 56 [2021-11-07 08:49:14,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:49:14,603 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 719 transitions. [2021-11-07 08:49:14,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:49:14,603 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 719 transitions. [2021-11-07 08:49:14,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 08:49:14,604 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:49:14,604 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] [2021-11-07 08:49:14,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-07 08:49:14,604 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:49:14,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:49:14,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1914886215, now seen corresponding path program 1 times [2021-11-07 08:49:14,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:49:14,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345941344] [2021-11-07 08:49:14,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:49:14,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:49:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:49:14,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:49:14,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:49:14,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345941344] [2021-11-07 08:49:14,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345941344] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:49:14,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:49:14,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:49:14,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739007343] [2021-11-07 08:49:14,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:49:14,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:49:14,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:49:14,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:49:14,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:49:14,761 INFO L87 Difference]: Start difference. First operand 602 states and 719 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:49:14,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:49:14,860 INFO L93 Difference]: Finished difference Result 758 states and 893 transitions. [2021-11-07 08:49:14,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:49:14,861 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-07 08:49:14,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:49:14,862 INFO L225 Difference]: With dead ends: 758 [2021-11-07 08:49:14,862 INFO L226 Difference]: Without dead ends: 696 [2021-11-07 08:49:14,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 82.63ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:49:14,863 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 389 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.73ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.23ms IncrementalHoareTripleChecker+Time [2021-11-07 08:49:14,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 1093 Invalid, 16 Unknown, 0 Unchecked, 0.73ms Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 37.23ms Time] [2021-11-07 08:49:14,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2021-11-07 08:49:14,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 570. [2021-11-07 08:49:14,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 563 states have (on average 1.2078152753108349) internal successors, (680), 569 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:49:14,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 680 transitions. [2021-11-07 08:49:14,878 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 680 transitions. Word has length 62 [2021-11-07 08:49:14,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:49:14,879 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 680 transitions. [2021-11-07 08:49:14,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:49:14,879 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 680 transitions. [2021-11-07 08:49:14,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 08:49:14,880 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:49:14,880 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:49:14,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-07 08:49:14,880 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:49:14,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:49:14,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1834524617, now seen corresponding path program 1 times [2021-11-07 08:49:14,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:49:14,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118491201] [2021-11-07 08:49:14,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:49:14,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:49:14,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:49:15,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:49:15,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:49:15,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118491201] [2021-11-07 08:49:15,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118491201] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:49:15,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:49:15,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 08:49:15,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691486900] [2021-11-07 08:49:15,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:49:15,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 08:49:15,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:49:15,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 08:49:15,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:49:15,171 INFO L87 Difference]: Start difference. First operand 570 states and 680 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:49:15,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:49:15,537 INFO L93 Difference]: Finished difference Result 922 states and 1105 transitions. [2021-11-07 08:49:15,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 08:49:15,537 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 08:49:15,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:49:15,539 INFO L225 Difference]: With dead ends: 922 [2021-11-07 08:49:15,539 INFO L226 Difference]: Without dead ends: 570 [2021-11-07 08:49:15,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 292.88ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-07 08:49:15,540 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 1339 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 156.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1339 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.69ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 168.14ms IncrementalHoareTripleChecker+Time [2021-11-07 08:49:15,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1339 Valid, 464 Invalid, 81 Unknown, 0 Unchecked, 1.69ms Time], IncrementalHoareTripleChecker [20 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 168.14ms Time] [2021-11-07 08:49:15,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-11-07 08:49:15,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2021-11-07 08:49:15,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 563 states have (on average 1.191829484902309) internal successors, (671), 569 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:49:15,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 671 transitions. [2021-11-07 08:49:15,557 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 671 transitions. Word has length 63 [2021-11-07 08:49:15,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:49:15,557 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 671 transitions. [2021-11-07 08:49:15,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:49:15,557 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 671 transitions. [2021-11-07 08:49:15,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 08:49:15,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:49:15,558 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] [2021-11-07 08:49:15,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-07 08:49:15,558 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:49:15,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:49:15,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1289082123, now seen corresponding path program 1 times [2021-11-07 08:49:15,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:49:15,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556524030] [2021-11-07 08:49:15,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:49:15,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:49:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:49:16,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:49:16,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:49:16,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556524030] [2021-11-07 08:49:16,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556524030] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:49:16,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:49:16,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 08:49:16,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413790432] [2021-11-07 08:49:16,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:49:16,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 08:49:16,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:49:16,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 08:49:16,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-07 08:49:16,092 INFO L87 Difference]: Start difference. First operand 570 states and 671 transitions. Second operand has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 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) [2021-11-07 08:49:18,133 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:49:20,253 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:49:22,395 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:49:24,495 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:49:28,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:49:28,299 INFO L93 Difference]: Finished difference Result 1146 states and 1322 transitions. [2021-11-07 08:49:28,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 08:49:28,299 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 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 [2021-11-07 08:49:28,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:49:28,301 INFO L225 Difference]: With dead ends: 1146 [2021-11-07 08:49:28,301 INFO L226 Difference]: Without dead ends: 766 [2021-11-07 08:49:28,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1075.17ms TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2021-11-07 08:49:28,302 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 716 mSDsluCounter, 1944 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 51 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10647.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 2288 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.39ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11298.06ms IncrementalHoareTripleChecker+Time [2021-11-07 08:49:28,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [716 Valid, 2288 Invalid, 1144 Unknown, 0 Unchecked, 10.39ms Time], IncrementalHoareTripleChecker [51 Valid, 1089 Invalid, 4 Unknown, 0 Unchecked, 11298.06ms Time] [2021-11-07 08:49:28,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2021-11-07 08:49:28,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 572. [2021-11-07 08:49:28,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 565 states have (on average 1.191150442477876) internal successors, (673), 571 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:49:28,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 673 transitions. [2021-11-07 08:49:28,319 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 673 transitions. Word has length 64 [2021-11-07 08:49:28,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:49:28,319 INFO L470 AbstractCegarLoop]: Abstraction has 572 states and 673 transitions. [2021-11-07 08:49:28,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 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) [2021-11-07 08:49:28,319 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 673 transitions. [2021-11-07 08:49:28,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 08:49:28,320 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:49:28,320 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:49:28,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-07 08:49:28,320 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:49:28,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:49:28,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1547247561, now seen corresponding path program 1 times [2021-11-07 08:49:28,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:49:28,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362569366] [2021-11-07 08:49:28,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:49:28,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:49:29,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:49:30,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:49:30,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:49:30,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362569366] [2021-11-07 08:49:30,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362569366] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:49:30,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:49:30,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 08:49:30,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726404720] [2021-11-07 08:49:30,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:49:30,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 08:49:30,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:49:30,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 08:49:30,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-07 08:49:30,180 INFO L87 Difference]: Start difference. First operand 572 states and 673 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 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) [2021-11-07 08:49:32,221 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:49:34,371 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:49:36,493 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 [] [2021-11-07 08:49:38,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:49:38,800 INFO L93 Difference]: Finished difference Result 1150 states and 1338 transitions. [2021-11-07 08:49:38,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 08:49:38,801 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 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 [2021-11-07 08:49:38,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:49:38,802 INFO L225 Difference]: With dead ends: 1150 [2021-11-07 08:49:38,802 INFO L226 Difference]: Without dead ends: 660 [2021-11-07 08:49:38,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1024.24ms TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2021-11-07 08:49:38,803 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 872 mSDsluCounter, 1152 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 30 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7280.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.82ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7740.72ms IncrementalHoareTripleChecker+Time [2021-11-07 08:49:38,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [872 Valid, 1540 Invalid, 500 Unknown, 0 Unchecked, 6.82ms Time], IncrementalHoareTripleChecker [30 Valid, 467 Invalid, 3 Unknown, 0 Unchecked, 7740.72ms Time] [2021-11-07 08:49:38,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2021-11-07 08:49:38,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 570. [2021-11-07 08:49:38,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 563 states have (on average 1.1882770870337478) internal successors, (669), 569 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:49:38,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 669 transitions. [2021-11-07 08:49:38,833 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 669 transitions. Word has length 64 [2021-11-07 08:49:38,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:49:38,833 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 669 transitions. [2021-11-07 08:49:38,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 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) [2021-11-07 08:49:38,833 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 669 transitions. [2021-11-07 08:49:38,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-07 08:49:38,834 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:49:38,834 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] [2021-11-07 08:49:38,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-07 08:49:38,834 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:49:38,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:49:38,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1614432707, now seen corresponding path program 1 times [2021-11-07 08:49:38,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:49:38,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201914050] [2021-11-07 08:49:38,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:49:38,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:49:38,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:49:39,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:49:39,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:49:39,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201914050] [2021-11-07 08:49:39,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201914050] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:49:39,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:49:39,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 08:49:39,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847266815] [2021-11-07 08:49:39,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:49:39,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 08:49:39,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:49:39,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 08:49:39,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:49:39,178 INFO L87 Difference]: Start difference. First operand 570 states and 669 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) [2021-11-07 08:49:40,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:49:40,084 INFO L93 Difference]: Finished difference Result 1254 states and 1477 transitions. [2021-11-07 08:49:40,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 08:49:40,084 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 [2021-11-07 08:49:40,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:49:40,086 INFO L225 Difference]: With dead ends: 1254 [2021-11-07 08:49:40,086 INFO L226 Difference]: Without dead ends: 748 [2021-11-07 08:49:40,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 215.03ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:49:40,087 INFO L933 BasicCegarLoop]: 330 mSDtfsCounter, 158 mSDsluCounter, 1380 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 712.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.75ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 759.90ms IncrementalHoareTripleChecker+Time [2021-11-07 08:49:40,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 1710 Invalid, 315 Unknown, 0 Unchecked, 3.75ms Time], IncrementalHoareTripleChecker [39 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 759.90ms Time] [2021-11-07 08:49:40,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2021-11-07 08:49:40,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 556. [2021-11-07 08:49:40,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 549 states have (on average 1.1839708561020037) internal successors, (650), 555 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:49:40,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 650 transitions. [2021-11-07 08:49:40,105 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 650 transitions. Word has length 68 [2021-11-07 08:49:40,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:49:40,105 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 650 transitions. [2021-11-07 08:49:40,106 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) [2021-11-07 08:49:40,106 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 650 transitions. [2021-11-07 08:49:40,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 08:49:40,106 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:49:40,106 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:49:40,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-07 08:49:40,107 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:49:40,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:49:40,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1138480632, now seen corresponding path program 1 times [2021-11-07 08:49:40,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:49:40,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322300860] [2021-11-07 08:49:40,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:49:40,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:49:42,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:49:42,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:49:42,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:49:42,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322300860] [2021-11-07 08:49:42,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322300860] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:49:42,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:49:42,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 08:49:42,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53678874] [2021-11-07 08:49:42,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:49:42,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 08:49:42,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:49:42,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 08:49:42,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:49:42,752 INFO L87 Difference]: Start difference. First operand 556 states and 650 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:49:44,794 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:49:46,919 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 [] [2021-11-07 08:49:47,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:49:47,522 INFO L93 Difference]: Finished difference Result 1107 states and 1294 transitions. [2021-11-07 08:49:47,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 08:49:47,523 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-07 08:49:47,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:49:47,524 INFO L225 Difference]: With dead ends: 1107 [2021-11-07 08:49:47,524 INFO L226 Difference]: Without dead ends: 556 [2021-11-07 08:49:47,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 328.67ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:49:47,525 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 316 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4367.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.34ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4609.23ms IncrementalHoareTripleChecker+Time [2021-11-07 08:49:47,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 1243 Invalid, 115 Unknown, 0 Unchecked, 2.34ms Time], IncrementalHoareTripleChecker [4 Valid, 109 Invalid, 2 Unknown, 0 Unchecked, 4609.23ms Time] [2021-11-07 08:49:47,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-11-07 08:49:47,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 556. [2021-11-07 08:49:47,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 549 states have (on average 1.1821493624772312) internal successors, (649), 555 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:49:47,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 649 transitions. [2021-11-07 08:49:47,574 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 649 transitions. Word has length 70 [2021-11-07 08:49:47,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:49:47,574 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 649 transitions. [2021-11-07 08:49:47,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:49:47,574 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 649 transitions. [2021-11-07 08:49:47,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 08:49:47,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:49:47,575 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:49:47,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-07 08:49:47,575 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:49:47,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:49:47,575 INFO L85 PathProgramCache]: Analyzing trace with hash 752019653, now seen corresponding path program 1 times [2021-11-07 08:49:47,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:49:47,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965055073] [2021-11-07 08:49:47,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:49:47,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:49:50,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:49:51,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:49:51,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:49:51,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965055073] [2021-11-07 08:49:51,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965055073] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:49:51,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:49:51,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 08:49:51,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146561027] [2021-11-07 08:49:51,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:49:51,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 08:49:51,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:49:51,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 08:49:51,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-07 08:49:51,585 INFO L87 Difference]: Start difference. First operand 556 states and 649 transitions. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:49:53,630 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:49:55,747 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:49:57,877 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:49:59,998 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 [] [2021-11-07 08:50:01,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:50:01,870 INFO L93 Difference]: Finished difference Result 590 states and 678 transitions. [2021-11-07 08:50:01,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 08:50:01,871 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-07 08:50:01,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:50:01,872 INFO L225 Difference]: With dead ends: 590 [2021-11-07 08:50:01,872 INFO L226 Difference]: Without dead ends: 574 [2021-11-07 08:50:01,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 518.39ms TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-11-07 08:50:01,873 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 800 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 25 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9472.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.08ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10053.78ms IncrementalHoareTripleChecker+Time [2021-11-07 08:50:01,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [800 Valid, 1623 Invalid, 553 Unknown, 0 Unchecked, 7.08ms Time], IncrementalHoareTripleChecker [25 Valid, 524 Invalid, 4 Unknown, 0 Unchecked, 10053.78ms Time] [2021-11-07 08:50:01,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-11-07 08:50:01,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 545. [2021-11-07 08:50:01,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 538 states have (on average 1.1802973977695168) internal successors, (635), 544 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:50:01,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 635 transitions. [2021-11-07 08:50:01,914 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 635 transitions. Word has length 71 [2021-11-07 08:50:01,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:50:01,914 INFO L470 AbstractCegarLoop]: Abstraction has 545 states and 635 transitions. [2021-11-07 08:50:01,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:50:01,914 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 635 transitions. [2021-11-07 08:50:01,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 08:50:01,915 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:50:01,915 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:50:01,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-07 08:50:01,915 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:50:01,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:50:01,916 INFO L85 PathProgramCache]: Analyzing trace with hash -680990529, now seen corresponding path program 1 times [2021-11-07 08:50:01,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:50:01,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143448390] [2021-11-07 08:50:01,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:50:01,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:50:02,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:50:02,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:50:02,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:50:02,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143448390] [2021-11-07 08:50:02,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143448390] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:50:02,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:50:02,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-07 08:50:02,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967521095] [2021-11-07 08:50:02,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:50:02,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 08:50:02,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:50:02,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 08:50:02,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-07 08:50:02,636 INFO L87 Difference]: Start difference. First operand 545 states and 635 transitions. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:50:04,689 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 [] [2021-11-07 08:50:06,803 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:50:08,889 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:50:12,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:50:12,385 INFO L93 Difference]: Finished difference Result 720 states and 817 transitions. [2021-11-07 08:50:12,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-07 08:50:12,386 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-07 08:50:12,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:50:12,388 INFO L225 Difference]: With dead ends: 720 [2021-11-07 08:50:12,388 INFO L226 Difference]: Without dead ends: 713 [2021-11-07 08:50:12,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1102.39ms TimeCoverageRelationStatistics Valid=155, Invalid=495, Unknown=0, NotChecked=0, Total=650 [2021-11-07 08:50:12,389 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 614 mSDsluCounter, 1948 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 43 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8429.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 2296 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.85ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8914.67ms IncrementalHoareTripleChecker+Time [2021-11-07 08:50:12,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [614 Valid, 2296 Invalid, 1019 Unknown, 0 Unchecked, 9.85ms Time], IncrementalHoareTripleChecker [43 Valid, 973 Invalid, 3 Unknown, 0 Unchecked, 8914.67ms Time] [2021-11-07 08:50:12,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-11-07 08:50:12,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 554. [2021-11-07 08:50:12,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 547 states have (on average 1.1773308957952469) internal successors, (644), 553 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:50:12,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 644 transitions. [2021-11-07 08:50:12,409 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 644 transitions. Word has length 71 [2021-11-07 08:50:12,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:50:12,409 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 644 transitions. [2021-11-07 08:50:12,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:50:12,409 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 644 transitions. [2021-11-07 08:50:12,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 08:50:12,410 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:50:12,410 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:50:12,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-07 08:50:12,411 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:50:12,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:50:12,411 INFO L85 PathProgramCache]: Analyzing trace with hash 857349501, now seen corresponding path program 1 times [2021-11-07 08:50:12,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:50:12,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443307627] [2021-11-07 08:50:12,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:50:12,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:50:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:50:12,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:50:12,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:50:12,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443307627] [2021-11-07 08:50:12,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443307627] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:50:12,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:50:12,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 08:50:12,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569793370] [2021-11-07 08:50:12,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:50:12,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 08:50:12,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:50:12,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 08:50:12,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:50:12,965 INFO L87 Difference]: Start difference. First operand 554 states and 644 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:50:15,012 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:50:17,118 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:50:19,243 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:50:21,347 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:50:23,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:50:23,805 INFO L93 Difference]: Finished difference Result 1093 states and 1260 transitions. [2021-11-07 08:50:23,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 08:50:23,806 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-07 08:50:23,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:50:23,808 INFO L225 Difference]: With dead ends: 1093 [2021-11-07 08:50:23,808 INFO L226 Difference]: Without dead ends: 679 [2021-11-07 08:50:23,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 679.03ms TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-11-07 08:50:23,809 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 465 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 26 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9748.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 2078 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.27ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10288.83ms IncrementalHoareTripleChecker+Time [2021-11-07 08:50:23,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [465 Valid, 2078 Invalid, 701 Unknown, 0 Unchecked, 7.27ms Time], IncrementalHoareTripleChecker [26 Valid, 671 Invalid, 4 Unknown, 0 Unchecked, 10288.83ms Time] [2021-11-07 08:50:23,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2021-11-07 08:50:23,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 554. [2021-11-07 08:50:23,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 547 states have (on average 1.1755027422303475) internal successors, (643), 553 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:50:23,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 643 transitions. [2021-11-07 08:50:23,826 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 643 transitions. Word has length 71 [2021-11-07 08:50:23,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:50:23,826 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 643 transitions. [2021-11-07 08:50:23,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:50:23,827 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 643 transitions. [2021-11-07 08:50:23,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 08:50:23,827 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:50:23,827 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:50:23,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-07 08:50:23,828 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:50:23,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:50:23,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1558949375, now seen corresponding path program 1 times [2021-11-07 08:50:23,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:50:23,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168822007] [2021-11-07 08:50:23,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:50:23,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:50:27,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:50:28,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:50:28,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:50:28,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168822007] [2021-11-07 08:50:28,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168822007] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:50:28,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:50:28,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-07 08:50:28,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734987845] [2021-11-07 08:50:28,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:50:28,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 08:50:28,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:50:28,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 08:50:28,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-07 08:50:28,365 INFO L87 Difference]: Start difference. First operand 554 states and 643 transitions. Second operand has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:50:30,409 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:50:32,548 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:50:34,642 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:50:36,764 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:50:38,888 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 [] [2021-11-07 08:50:41,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:50:41,978 INFO L93 Difference]: Finished difference Result 582 states and 666 transitions. [2021-11-07 08:50:41,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-07 08:50:41,978 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-07 08:50:41,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:50:41,980 INFO L225 Difference]: With dead ends: 582 [2021-11-07 08:50:41,980 INFO L226 Difference]: Without dead ends: 575 [2021-11-07 08:50:41,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1367.13ms TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2021-11-07 08:50:41,980 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 695 mSDsluCounter, 1701 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 23 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12010.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 2042 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.58ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12727.93ms IncrementalHoareTripleChecker+Time [2021-11-07 08:50:41,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [695 Valid, 2042 Invalid, 702 Unknown, 0 Unchecked, 8.58ms Time], IncrementalHoareTripleChecker [23 Valid, 674 Invalid, 5 Unknown, 0 Unchecked, 12727.93ms Time] [2021-11-07 08:50:41,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2021-11-07 08:50:41,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2021-11-07 08:50:41,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 538 states have (on average 1.1765799256505576) internal successors, (633), 544 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:50:42,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 633 transitions. [2021-11-07 08:50:42,000 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 633 transitions. Word has length 71 [2021-11-07 08:50:42,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:50:42,000 INFO L470 AbstractCegarLoop]: Abstraction has 545 states and 633 transitions. [2021-11-07 08:50:42,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:50:42,001 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 633 transitions. [2021-11-07 08:50:42,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 08:50:42,001 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:50:42,001 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] [2021-11-07 08:50:42,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-07 08:50:42,002 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:50:42,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:50:42,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1289124232, now seen corresponding path program 1 times [2021-11-07 08:50:42,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:50:42,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662726357] [2021-11-07 08:50:42,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:50:42,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:50:42,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:50:42,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:50:42,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:50:42,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662726357] [2021-11-07 08:50:42,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662726357] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:50:42,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:50:42,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 08:50:42,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243226129] [2021-11-07 08:50:42,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:50:42,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 08:50:42,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:50:42,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 08:50:42,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-07 08:50:42,668 INFO L87 Difference]: Start difference. First operand 545 states and 633 transitions. Second operand has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 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) [2021-11-07 08:50:44,710 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:50:46,793 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:50:48,908 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:50:50,993 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:50:53,084 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:50:56,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:50:56,791 INFO L93 Difference]: Finished difference Result 1103 states and 1261 transitions. [2021-11-07 08:50:56,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-07 08:50:56,791 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 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 [2021-11-07 08:50:56,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:50:56,793 INFO L225 Difference]: With dead ends: 1103 [2021-11-07 08:50:56,793 INFO L226 Difference]: Without dead ends: 724 [2021-11-07 08:50:56,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1078.95ms TimeCoverageRelationStatistics Valid=167, Invalid=483, Unknown=0, NotChecked=0, Total=650 [2021-11-07 08:50:56,795 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 621 mSDsluCounter, 1959 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 45 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12621.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 2311 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.98ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13267.54ms IncrementalHoareTripleChecker+Time [2021-11-07 08:50:56,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [621 Valid, 2311 Invalid, 1107 Unknown, 0 Unchecked, 9.98ms Time], IncrementalHoareTripleChecker [45 Valid, 1057 Invalid, 5 Unknown, 0 Unchecked, 13267.54ms Time] [2021-11-07 08:50:56,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2021-11-07 08:50:56,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 545. [2021-11-07 08:50:56,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 538 states have (on average 1.1728624535315986) internal successors, (631), 544 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:50:56,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 631 transitions. [2021-11-07 08:50:56,814 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 631 transitions. Word has length 73 [2021-11-07 08:50:56,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:50:56,815 INFO L470 AbstractCegarLoop]: Abstraction has 545 states and 631 transitions. [2021-11-07 08:50:56,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 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) [2021-11-07 08:50:56,815 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 631 transitions. [2021-11-07 08:50:56,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 08:50:56,816 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:50:56,816 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] [2021-11-07 08:50:56,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-07 08:50:56,816 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:50:56,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:50:56,816 INFO L85 PathProgramCache]: Analyzing trace with hash -485491784, now seen corresponding path program 1 times [2021-11-07 08:50:56,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:50:56,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142158223] [2021-11-07 08:50:56,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:50:56,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:50:58,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:50:59,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:50:59,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:50:59,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142158223] [2021-11-07 08:50:59,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142158223] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:50:59,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:50:59,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-07 08:50:59,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195797240] [2021-11-07 08:50:59,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:50:59,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 08:50:59,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:50:59,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 08:50:59,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-11-07 08:50:59,667 INFO L87 Difference]: Start difference. First operand 545 states and 631 transitions. Second operand has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 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) [2021-11-07 08:51:01,717 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:51:03,830 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:51:05,891 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 [] [2021-11-07 08:51:11,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:51:11,065 INFO L93 Difference]: Finished difference Result 763 states and 883 transitions. [2021-11-07 08:51:11,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-07 08:51:11,066 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 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 [2021-11-07 08:51:11,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:51:11,068 INFO L225 Difference]: With dead ends: 763 [2021-11-07 08:51:11,068 INFO L226 Difference]: Without dead ends: 745 [2021-11-07 08:51:11,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 2672.82ms TimeCoverageRelationStatistics Valid=423, Invalid=1557, Unknown=0, NotChecked=0, Total=1980 [2021-11-07 08:51:11,069 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 1047 mSDsluCounter, 2144 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 156 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8665.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 2471 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.62ms SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9102.23ms IncrementalHoareTripleChecker+Time [2021-11-07 08:51:11,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1047 Valid, 2471 Invalid, 1236 Unknown, 0 Unchecked, 12.62ms Time], IncrementalHoareTripleChecker [156 Valid, 1077 Invalid, 3 Unknown, 0 Unchecked, 9102.23ms Time] [2021-11-07 08:51:11,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2021-11-07 08:51:11,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 527. [2021-11-07 08:51:11,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 521 states have (on average 1.1765834932821497) internal successors, (613), 526 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:51:11,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 613 transitions. [2021-11-07 08:51:11,088 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 613 transitions. Word has length 73 [2021-11-07 08:51:11,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:51:11,089 INFO L470 AbstractCegarLoop]: Abstraction has 527 states and 613 transitions. [2021-11-07 08:51:11,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 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) [2021-11-07 08:51:11,089 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 613 transitions. [2021-11-07 08:51:11,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 08:51:11,090 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:51:11,090 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] [2021-11-07 08:51:11,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-07 08:51:11,090 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:51:11,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:51:11,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1056511684, now seen corresponding path program 1 times [2021-11-07 08:51:11,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:51:11,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874181325] [2021-11-07 08:51:11,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:51:11,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:51:12,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:51:13,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:51:13,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:51:13,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874181325] [2021-11-07 08:51:13,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874181325] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:51:13,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:51:13,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-07 08:51:13,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592649166] [2021-11-07 08:51:13,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:51:13,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 08:51:13,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:51:13,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 08:51:13,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-11-07 08:51:13,496 INFO L87 Difference]: Start difference. First operand 527 states and 613 transitions. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2021-11-07 08:51:15,546 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 [] [2021-11-07 08:51:17,669 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:51:19,791 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:51:21,902 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:51:24,013 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:51:26,140 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 [] [2021-11-07 08:51:27,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:51:27,731 INFO L93 Difference]: Finished difference Result 960 states and 1107 transitions. [2021-11-07 08:51:27,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 08:51:27,732 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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 [2021-11-07 08:51:27,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:51:27,734 INFO L225 Difference]: With dead ends: 960 [2021-11-07 08:51:27,734 INFO L226 Difference]: Without dead ends: 929 [2021-11-07 08:51:27,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1006.87ms TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-11-07 08:51:27,735 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 1171 mSDsluCounter, 1519 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 47 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12887.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 1722 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.10ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13623.98ms IncrementalHoareTripleChecker+Time [2021-11-07 08:51:27,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1171 Valid, 1722 Invalid, 344 Unknown, 0 Unchecked, 5.10ms Time], IncrementalHoareTripleChecker [47 Valid, 291 Invalid, 6 Unknown, 0 Unchecked, 13623.98ms Time] [2021-11-07 08:51:27,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2021-11-07 08:51:27,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 525. [2021-11-07 08:51:27,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 519 states have (on average 1.1753371868978806) internal successors, (610), 524 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:51:27,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 610 transitions. [2021-11-07 08:51:27,760 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 610 transitions. Word has length 77 [2021-11-07 08:51:27,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:51:27,760 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 610 transitions. [2021-11-07 08:51:27,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 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) [2021-11-07 08:51:27,760 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 610 transitions. [2021-11-07 08:51:27,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-07 08:51:27,763 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:51:27,763 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:51:27,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-07 08:51:27,763 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:51:27,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:51:27,763 INFO L85 PathProgramCache]: Analyzing trace with hash -330775101, now seen corresponding path program 1 times [2021-11-07 08:51:27,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:51:27,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969303861] [2021-11-07 08:51:27,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:51:27,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:51:29,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:51:30,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:51:30,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:51:30,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969303861] [2021-11-07 08:51:30,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969303861] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:51:30,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:51:30,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-07 08:51:30,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957891572] [2021-11-07 08:51:30,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:51:30,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 08:51:30,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:51:30,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 08:51:30,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-07 08:51:30,156 INFO L87 Difference]: Start difference. First operand 525 states and 610 transitions. Second operand has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 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) [2021-11-07 08:51:32,202 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 [] [2021-11-07 08:51:34,324 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:51:36,406 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:51:38,519 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:51:40,616 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:51:45,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:51:45,926 INFO L93 Difference]: Finished difference Result 1409 states and 1624 transitions. [2021-11-07 08:51:45,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-07 08:51:45,927 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 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 [2021-11-07 08:51:45,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:51:45,929 INFO L225 Difference]: With dead ends: 1409 [2021-11-07 08:51:45,929 INFO L226 Difference]: Without dead ends: 1054 [2021-11-07 08:51:45,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 3436.96ms TimeCoverageRelationStatistics Valid=393, Invalid=1329, Unknown=0, NotChecked=0, Total=1722 [2021-11-07 08:51:45,930 INFO L933 BasicCegarLoop]: 330 mSDtfsCounter, 1717 mSDsluCounter, 1433 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 96 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12021.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1717 SdHoareTripleChecker+Valid, 1763 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.54ms SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12668.16ms IncrementalHoareTripleChecker+Time [2021-11-07 08:51:45,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1717 Valid, 1763 Invalid, 822 Unknown, 0 Unchecked, 11.54ms Time], IncrementalHoareTripleChecker [96 Valid, 721 Invalid, 5 Unknown, 0 Unchecked, 12668.16ms Time] [2021-11-07 08:51:45,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2021-11-07 08:51:45,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 531. [2021-11-07 08:51:45,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 525 states have (on average 1.1752380952380952) internal successors, (617), 530 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:51:45,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 617 transitions. [2021-11-07 08:51:45,985 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 617 transitions. Word has length 86 [2021-11-07 08:51:45,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:51:45,985 INFO L470 AbstractCegarLoop]: Abstraction has 531 states and 617 transitions. [2021-11-07 08:51:45,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 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) [2021-11-07 08:51:45,985 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 617 transitions. [2021-11-07 08:51:45,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-07 08:51:45,986 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:51:45,986 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] [2021-11-07 08:51:45,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-07 08:51:45,986 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:51:45,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:51:45,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1242647049, now seen corresponding path program 1 times [2021-11-07 08:51:45,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:51:45,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085190140] [2021-11-07 08:51:45,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:51:45,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:51:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:51:46,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:51:46,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:51:46,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085190140] [2021-11-07 08:51:46,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085190140] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:51:46,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:51:46,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 08:51:46,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46259791] [2021-11-07 08:51:46,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:51:46,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 08:51:46,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:51:46,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 08:51:46,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:51:46,389 INFO L87 Difference]: Start difference. First operand 531 states and 617 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:51:47,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:51:47,134 INFO L93 Difference]: Finished difference Result 978 states and 1138 transitions. [2021-11-07 08:51:47,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 08:51:47,134 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2021-11-07 08:51:47,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:51:47,136 INFO L225 Difference]: With dead ends: 978 [2021-11-07 08:51:47,136 INFO L226 Difference]: Without dead ends: 601 [2021-11-07 08:51:47,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 226.66ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:51:47,137 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 96 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 555.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.68ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 591.96ms IncrementalHoareTripleChecker+Time [2021-11-07 08:51:47,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 1230 Invalid, 240 Unknown, 0 Unchecked, 2.68ms Time], IncrementalHoareTripleChecker [29 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 591.96ms Time] [2021-11-07 08:51:47,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2021-11-07 08:51:47,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 522. [2021-11-07 08:51:47,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 516 states have (on average 1.1666666666666667) internal successors, (602), 521 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:51:47,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 602 transitions. [2021-11-07 08:51:47,161 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 602 transitions. Word has length 90 [2021-11-07 08:51:47,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:51:47,161 INFO L470 AbstractCegarLoop]: Abstraction has 522 states and 602 transitions. [2021-11-07 08:51:47,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:51:47,162 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 602 transitions. [2021-11-07 08:51:47,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-07 08:51:47,162 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:51:47,162 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] [2021-11-07 08:51:47,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-07 08:51:47,163 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:51:47,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:51:47,163 INFO L85 PathProgramCache]: Analyzing trace with hash -511953164, now seen corresponding path program 1 times [2021-11-07 08:51:47,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:51:47,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935497663] [2021-11-07 08:51:47,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:51:47,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:51:50,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:51:51,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:51:51,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:51:51,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935497663] [2021-11-07 08:51:51,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935497663] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:51:51,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:51:51,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-07 08:51:51,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253492749] [2021-11-07 08:51:51,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:51:51,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 08:51:51,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:51:51,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 08:51:51,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2021-11-07 08:51:51,735 INFO L87 Difference]: Start difference. First operand 522 states and 602 transitions. Second operand has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:51:53,778 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:51:55,916 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:51:57,994 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:52:00,129 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:52:02,258 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:52:04,374 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:52:09,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:52:09,958 INFO L93 Difference]: Finished difference Result 925 states and 1052 transitions. [2021-11-07 08:52:09,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 08:52:09,959 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2021-11-07 08:52:09,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:52:09,961 INFO L225 Difference]: With dead ends: 925 [2021-11-07 08:52:09,961 INFO L226 Difference]: Without dead ends: 806 [2021-11-07 08:52:09,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 3325.71ms TimeCoverageRelationStatistics Valid=348, Invalid=1134, Unknown=0, NotChecked=0, Total=1482 [2021-11-07 08:52:09,962 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 1865 mSDsluCounter, 1788 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 98 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14802.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1865 SdHoareTripleChecker+Valid, 2061 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.83ms SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15698.11ms IncrementalHoareTripleChecker+Time [2021-11-07 08:52:09,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1865 Valid, 2061 Invalid, 1029 Unknown, 0 Unchecked, 13.83ms Time], IncrementalHoareTripleChecker [98 Valid, 925 Invalid, 6 Unknown, 0 Unchecked, 15698.11ms Time] [2021-11-07 08:52:09,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2021-11-07 08:52:09,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 492. [2021-11-07 08:52:09,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 486 states have (on average 1.1563786008230452) internal successors, (562), 491 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:52:09,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 562 transitions. [2021-11-07 08:52:09,988 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 562 transitions. Word has length 92 [2021-11-07 08:52:09,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:52:09,988 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 562 transitions. [2021-11-07 08:52:09,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:52:09,988 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 562 transitions. [2021-11-07 08:52:09,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-07 08:52:09,989 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:52:09,989 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] [2021-11-07 08:52:09,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-07 08:52:09,989 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:52:09,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:52:09,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1944963346, now seen corresponding path program 1 times [2021-11-07 08:52:09,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:52:09,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174841540] [2021-11-07 08:52:09,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:52:09,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:52:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:52:10,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:52:10,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:52:10,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174841540] [2021-11-07 08:52:10,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174841540] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:52:10,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:52:10,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 08:52:10,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625712398] [2021-11-07 08:52:10,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:52:10,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 08:52:10,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:52:10,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 08:52:10,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-07 08:52:10,578 INFO L87 Difference]: Start difference. First operand 492 states and 562 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:52:12,620 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:52:14,767 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:52:16,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:52:16,759 INFO L93 Difference]: Finished difference Result 876 states and 999 transitions. [2021-11-07 08:52:16,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 08:52:16,759 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2021-11-07 08:52:16,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:52:16,761 INFO L225 Difference]: With dead ends: 876 [2021-11-07 08:52:16,761 INFO L226 Difference]: Without dead ends: 791 [2021-11-07 08:52:16,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 538.63ms TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-11-07 08:52:16,762 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 506 mSDsluCounter, 1233 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 45 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5380.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1517 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.64ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5754.84ms IncrementalHoareTripleChecker+Time [2021-11-07 08:52:16,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [506 Valid, 1517 Invalid, 584 Unknown, 0 Unchecked, 5.64ms Time], IncrementalHoareTripleChecker [45 Valid, 537 Invalid, 2 Unknown, 0 Unchecked, 5754.84ms Time] [2021-11-07 08:52:16,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2021-11-07 08:52:16,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 638. [2021-11-07 08:52:16,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 632 states have (on average 1.1693037974683544) internal successors, (739), 637 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:52:16,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 739 transitions. [2021-11-07 08:52:16,798 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 739 transitions. Word has length 92 [2021-11-07 08:52:16,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:52:16,798 INFO L470 AbstractCegarLoop]: Abstraction has 638 states and 739 transitions. [2021-11-07 08:52:16,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:52:16,799 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 739 transitions. [2021-11-07 08:52:16,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-07 08:52:16,800 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:52:16,801 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] [2021-11-07 08:52:16,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-07 08:52:16,801 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:52:16,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:52:16,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1804414736, now seen corresponding path program 1 times [2021-11-07 08:52:16,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:52:16,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411360935] [2021-11-07 08:52:16,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:52:16,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:52:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:52:18,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:52:18,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:52:18,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411360935] [2021-11-07 08:52:18,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411360935] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:52:18,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:52:18,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-07 08:52:18,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596948527] [2021-11-07 08:52:18,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:52:18,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 08:52:18,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:52:18,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 08:52:18,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-11-07 08:52:18,074 INFO L87 Difference]: Start difference. First operand 638 states and 739 transitions. Second operand has 17 states, 17 states have (on average 5.411764705882353) internal successors, (92), 17 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:52:20,118 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:52:22,270 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:52:24,368 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:52:26,490 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:52:28,614 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:52:30,743 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:52:38,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:52:38,004 INFO L93 Difference]: Finished difference Result 1568 states and 1782 transitions. [2021-11-07 08:52:38,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-07 08:52:38,004 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.411764705882353) internal successors, (92), 17 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2021-11-07 08:52:38,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:52:38,007 INFO L225 Difference]: With dead ends: 1568 [2021-11-07 08:52:38,007 INFO L226 Difference]: Without dead ends: 1274 [2021-11-07 08:52:38,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 794 ImplicationChecksByTransitivity, 3828.66ms TimeCoverageRelationStatistics Valid=574, Invalid=2182, Unknown=0, NotChecked=0, Total=2756 [2021-11-07 08:52:38,009 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 1785 mSDsluCounter, 2321 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 135 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15627.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1785 SdHoareTripleChecker+Valid, 2631 SdHoareTripleChecker+Invalid, 1419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.98ms SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16625.42ms IncrementalHoareTripleChecker+Time [2021-11-07 08:52:38,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1785 Valid, 2631 Invalid, 1419 Unknown, 0 Unchecked, 16.98ms Time], IncrementalHoareTripleChecker [135 Valid, 1278 Invalid, 6 Unknown, 0 Unchecked, 16625.42ms Time] [2021-11-07 08:52:38,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2021-11-07 08:52:38,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 703. [2021-11-07 08:52:38,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 697 states have (on average 1.157819225251076) internal successors, (807), 702 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:52:38,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 807 transitions. [2021-11-07 08:52:38,048 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 807 transitions. Word has length 92 [2021-11-07 08:52:38,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:52:38,048 INFO L470 AbstractCegarLoop]: Abstraction has 703 states and 807 transitions. [2021-11-07 08:52:38,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.411764705882353) internal successors, (92), 17 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:52:38,048 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 807 transitions. [2021-11-07 08:52:38,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-07 08:52:38,049 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:52:38,049 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] [2021-11-07 08:52:38,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-07 08:52:38,050 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:52:38,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:52:38,050 INFO L85 PathProgramCache]: Analyzing trace with hash 2117850032, now seen corresponding path program 1 times [2021-11-07 08:52:38,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:52:38,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169168693] [2021-11-07 08:52:38,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:52:38,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:52:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:52:43,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:52:43,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:52:43,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169168693] [2021-11-07 08:52:43,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169168693] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:52:43,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:52:43,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-07 08:52:43,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715137329] [2021-11-07 08:52:43,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:52:43,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 08:52:43,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:52:43,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 08:52:43,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-07 08:52:43,714 INFO L87 Difference]: Start difference. First operand 703 states and 807 transitions. Second operand has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:52:45,771 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:52:47,905 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:52:50,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:52:50,151 INFO L93 Difference]: Finished difference Result 885 states and 1001 transitions. [2021-11-07 08:52:50,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-07 08:52:50,152 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2021-11-07 08:52:50,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:52:50,154 INFO L225 Difference]: With dead ends: 885 [2021-11-07 08:52:50,154 INFO L226 Difference]: Without dead ends: 808 [2021-11-07 08:52:50,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1123.93ms TimeCoverageRelationStatistics Valid=202, Invalid=500, Unknown=0, NotChecked=0, Total=702 [2021-11-07 08:52:50,155 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 892 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 47 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5340.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.85ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5674.46ms IncrementalHoareTripleChecker+Time [2021-11-07 08:52:50,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [892 Valid, 1128 Invalid, 507 Unknown, 0 Unchecked, 5.85ms Time], IncrementalHoareTripleChecker [47 Valid, 458 Invalid, 2 Unknown, 0 Unchecked, 5674.46ms Time] [2021-11-07 08:52:50,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2021-11-07 08:52:50,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 674. [2021-11-07 08:52:50,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 668 states have (on average 1.160179640718563) internal successors, (775), 673 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:52:50,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 775 transitions. [2021-11-07 08:52:50,228 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 775 transitions. Word has length 92 [2021-11-07 08:52:50,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:52:50,228 INFO L470 AbstractCegarLoop]: Abstraction has 674 states and 775 transitions. [2021-11-07 08:52:50,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:52:50,228 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 775 transitions. [2021-11-07 08:52:50,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-07 08:52:50,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:52:50,229 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] [2021-11-07 08:52:50,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-07 08:52:50,229 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:52:50,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:52:50,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1677019333, now seen corresponding path program 1 times [2021-11-07 08:52:50,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:52:50,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162996148] [2021-11-07 08:52:50,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:52:50,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:52:50,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:52:50,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:52:50,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:52:50,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162996148] [2021-11-07 08:52:50,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162996148] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:52:50,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:52:50,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 08:52:50,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200532848] [2021-11-07 08:52:50,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:52:50,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 08:52:50,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:52:50,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 08:52:50,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-07 08:52:50,950 INFO L87 Difference]: Start difference. First operand 674 states and 775 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 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) [2021-11-07 08:52:53,007 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:52:55,135 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:52:57,241 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 [] [2021-11-07 08:53:00,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:53:00,746 INFO L93 Difference]: Finished difference Result 811 states and 916 transitions. [2021-11-07 08:53:00,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-07 08:53:00,747 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 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 [2021-11-07 08:53:00,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:53:00,749 INFO L225 Difference]: With dead ends: 811 [2021-11-07 08:53:00,749 INFO L226 Difference]: Without dead ends: 799 [2021-11-07 08:53:00,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1789.23ms TimeCoverageRelationStatistics Valid=235, Invalid=577, Unknown=0, NotChecked=0, Total=812 [2021-11-07 08:53:00,750 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 1169 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 66 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7760.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1169 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.07ms SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8245.40ms IncrementalHoareTripleChecker+Time [2021-11-07 08:53:00,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1169 Valid, 976 Invalid, 634 Unknown, 0 Unchecked, 8.07ms Time], IncrementalHoareTripleChecker [66 Valid, 565 Invalid, 3 Unknown, 0 Unchecked, 8245.40ms Time] [2021-11-07 08:53:00,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2021-11-07 08:53:00,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 717. [2021-11-07 08:53:00,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 711 states have (on average 1.1617440225035163) internal successors, (826), 716 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:53:00,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 826 transitions. [2021-11-07 08:53:00,818 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 826 transitions. Word has length 93 [2021-11-07 08:53:00,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:53:00,819 INFO L470 AbstractCegarLoop]: Abstraction has 717 states and 826 transitions. [2021-11-07 08:53:00,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 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) [2021-11-07 08:53:00,819 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 826 transitions. [2021-11-07 08:53:00,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-07 08:53:00,820 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:53:00,820 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] [2021-11-07 08:53:00,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-07 08:53:00,820 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:53:00,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:53:00,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1418853895, now seen corresponding path program 1 times [2021-11-07 08:53:00,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:53:00,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142105644] [2021-11-07 08:53:00,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:53:00,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:53:00,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:53:02,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:53:02,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:53:02,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142105644] [2021-11-07 08:53:02,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142105644] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:53:02,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:53:02,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-07 08:53:02,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651873870] [2021-11-07 08:53:02,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:53:02,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 08:53:02,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:53:02,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 08:53:02,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-11-07 08:53:02,270 INFO L87 Difference]: Start difference. First operand 717 states and 826 transitions. Second operand has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 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) [2021-11-07 08:53:04,314 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:53:06,436 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:53:08,511 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:53:10,614 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:53:12,741 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:53:14,821 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:53:16,982 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:53:22,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:53:22,024 INFO L93 Difference]: Finished difference Result 1121 states and 1279 transitions. [2021-11-07 08:53:22,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 08:53:22,024 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 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 [2021-11-07 08:53:22,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:53:22,027 INFO L225 Difference]: With dead ends: 1121 [2021-11-07 08:53:22,027 INFO L226 Difference]: Without dead ends: 1107 [2021-11-07 08:53:22,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 2851.58ms TimeCoverageRelationStatistics Valid=264, Invalid=858, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 08:53:22,031 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 1780 mSDsluCounter, 1649 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 130 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16632.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1780 SdHoareTripleChecker+Valid, 1863 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.46ms SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17594.43ms IncrementalHoareTripleChecker+Time [2021-11-07 08:53:22,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1780 Valid, 1863 Invalid, 1022 Unknown, 0 Unchecked, 13.46ms Time], IncrementalHoareTripleChecker [130 Valid, 885 Invalid, 7 Unknown, 0 Unchecked, 17594.43ms Time] [2021-11-07 08:53:22,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2021-11-07 08:53:22,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 802. [2021-11-07 08:53:22,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 796 states have (on average 1.1608040201005025) internal successors, (924), 801 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:53:22,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 924 transitions. [2021-11-07 08:53:22,089 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 924 transitions. Word has length 93 [2021-11-07 08:53:22,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:53:22,089 INFO L470 AbstractCegarLoop]: Abstraction has 802 states and 924 transitions. [2021-11-07 08:53:22,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 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) [2021-11-07 08:53:22,090 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 924 transitions. [2021-11-07 08:53:22,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-07 08:53:22,091 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:53:22,091 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] [2021-11-07 08:53:22,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-07 08:53:22,091 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:53:22,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:53:22,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1184937781, now seen corresponding path program 1 times [2021-11-07 08:53:22,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:53:22,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136919336] [2021-11-07 08:53:22,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:53:22,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:53:22,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:53:23,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:53:23,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:53:23,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136919336] [2021-11-07 08:53:23,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136919336] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:53:23,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:53:23,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-07 08:53:23,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323405602] [2021-11-07 08:53:23,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:53:23,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-07 08:53:23,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:53:23,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-07 08:53:23,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-11-07 08:53:23,671 INFO L87 Difference]: Start difference. First operand 802 states and 924 transitions. Second operand has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 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) [2021-11-07 08:53:25,725 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:53:27,851 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:53:29,983 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:53:32,083 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:53:34,221 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:53:36,393 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:53:38,493 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:53:40,606 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:53:42,715 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:53:44,815 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:53:50,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:53:50,602 INFO L93 Difference]: Finished difference Result 1114 states and 1270 transitions. [2021-11-07 08:53:50,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-07 08:53:50,603 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 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 [2021-11-07 08:53:50,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:53:50,611 INFO L225 Difference]: With dead ends: 1114 [2021-11-07 08:53:50,611 INFO L226 Difference]: Without dead ends: 1107 [2021-11-07 08:53:50,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 3463.26ms TimeCoverageRelationStatistics Valid=396, Invalid=1326, Unknown=0, NotChecked=0, Total=1722 [2021-11-07 08:53:50,612 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 1839 mSDsluCounter, 2202 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 144 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22977.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1839 SdHoareTripleChecker+Valid, 2417 SdHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.86ms SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24249.79ms IncrementalHoareTripleChecker+Time [2021-11-07 08:53:50,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1839 Valid, 2417 Invalid, 1231 Unknown, 0 Unchecked, 12.86ms Time], IncrementalHoareTripleChecker [144 Valid, 1077 Invalid, 10 Unknown, 0 Unchecked, 24249.79ms Time] [2021-11-07 08:53:50,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2021-11-07 08:53:50,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 809. [2021-11-07 08:53:50,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 803 states have (on average 1.1594022415940224) internal successors, (931), 808 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:53:50,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 931 transitions. [2021-11-07 08:53:50,687 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 931 transitions. Word has length 93 [2021-11-07 08:53:50,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:53:50,687 INFO L470 AbstractCegarLoop]: Abstraction has 809 states and 931 transitions. [2021-11-07 08:53:50,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 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) [2021-11-07 08:53:50,687 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 931 transitions. [2021-11-07 08:53:50,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-07 08:53:50,688 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:53:50,688 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] [2021-11-07 08:53:50,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-07 08:53:50,688 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:53:50,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:53:50,689 INFO L85 PathProgramCache]: Analyzing trace with hash -87730375, now seen corresponding path program 1 times [2021-11-07 08:53:50,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:53:50,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43274945] [2021-11-07 08:53:50,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:53:50,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:53:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:53:56,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:53:56,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:53:56,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43274945] [2021-11-07 08:53:56,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43274945] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:53:56,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:53:56,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-07 08:53:56,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81217124] [2021-11-07 08:53:56,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:53:56,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-07 08:53:56,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:53:56,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-07 08:53:56,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2021-11-07 08:53:56,261 INFO L87 Difference]: Start difference. First operand 809 states and 931 transitions. Second operand has 20 states, 20 states have (on average 4.65) internal successors, (93), 19 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) [2021-11-07 08:53:58,303 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:54:00,427 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:54:02,493 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:54:04,617 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:54:06,732 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 [] [2021-11-07 08:54:12,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:54:12,537 INFO L93 Difference]: Finished difference Result 1290 states and 1465 transitions. [2021-11-07 08:54:12,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-07 08:54:12,537 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.65) internal successors, (93), 19 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 [2021-11-07 08:54:12,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:54:12,539 INFO L225 Difference]: With dead ends: 1290 [2021-11-07 08:54:12,539 INFO L226 Difference]: Without dead ends: 1220 [2021-11-07 08:54:12,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 3612.98ms TimeCoverageRelationStatistics Valid=411, Invalid=1229, Unknown=0, NotChecked=0, Total=1640 [2021-11-07 08:54:12,540 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 1811 mSDsluCounter, 1644 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 134 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12762.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1811 SdHoareTripleChecker+Valid, 1867 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.76ms SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13500.66ms IncrementalHoareTripleChecker+Time [2021-11-07 08:54:12,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1811 Valid, 1867 Invalid, 1047 Unknown, 0 Unchecked, 12.76ms Time], IncrementalHoareTripleChecker [134 Valid, 908 Invalid, 5 Unknown, 0 Unchecked, 13500.66ms Time] [2021-11-07 08:54:12,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2021-11-07 08:54:12,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 915. [2021-11-07 08:54:12,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 915 states, 909 states have (on average 1.166116611661166) internal successors, (1060), 914 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) [2021-11-07 08:54:12,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1060 transitions. [2021-11-07 08:54:12,604 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1060 transitions. Word has length 93 [2021-11-07 08:54:12,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:54:12,605 INFO L470 AbstractCegarLoop]: Abstraction has 915 states and 1060 transitions. [2021-11-07 08:54:12,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.65) internal successors, (93), 19 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) [2021-11-07 08:54:12,605 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1060 transitions. [2021-11-07 08:54:12,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-07 08:54:12,606 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:54:12,606 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:54:12,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-07 08:54:12,606 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:54:12,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:54:12,607 INFO L85 PathProgramCache]: Analyzing trace with hash 2118871911, now seen corresponding path program 1 times [2021-11-07 08:54:12,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:54:12,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629895158] [2021-11-07 08:54:12,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:54:12,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:54:12,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:54:13,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:54:13,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:54:13,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629895158] [2021-11-07 08:54:13,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629895158] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:54:13,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:54:13,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 08:54:13,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951212351] [2021-11-07 08:54:13,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:54:13,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 08:54:13,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:54:13,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 08:54:13,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:54:13,084 INFO L87 Difference]: Start difference. First operand 915 states and 1060 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:54:15,129 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:54:17,243 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:54:19,352 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:54:20,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:54:20,856 INFO L93 Difference]: Finished difference Result 1214 states and 1386 transitions. [2021-11-07 08:54:20,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 08:54:20,857 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-07 08:54:20,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:54:20,859 INFO L225 Difference]: With dead ends: 1214 [2021-11-07 08:54:20,859 INFO L226 Difference]: Without dead ends: 1088 [2021-11-07 08:54:20,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 295.28ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:54:20,860 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 491 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 37 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7052.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.23ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7487.73ms IncrementalHoareTripleChecker+Time [2021-11-07 08:54:20,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 961 Invalid, 389 Unknown, 0 Unchecked, 4.23ms Time], IncrementalHoareTripleChecker [37 Valid, 349 Invalid, 3 Unknown, 0 Unchecked, 7487.73ms Time] [2021-11-07 08:54:20,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2021-11-07 08:54:20,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 909. [2021-11-07 08:54:20,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 903 states have (on average 1.1627906976744187) internal successors, (1050), 908 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:54:20,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1050 transitions. [2021-11-07 08:54:20,996 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1050 transitions. Word has length 94 [2021-11-07 08:54:20,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:54:20,996 INFO L470 AbstractCegarLoop]: Abstraction has 909 states and 1050 transitions. [2021-11-07 08:54:20,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:54:20,997 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1050 transitions. [2021-11-07 08:54:20,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-07 08:54:20,997 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:54:20,998 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] [2021-11-07 08:54:20,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-07 08:54:20,998 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:54:20,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:54:20,998 INFO L85 PathProgramCache]: Analyzing trace with hash -252867351, now seen corresponding path program 1 times [2021-11-07 08:54:20,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:54:20,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536129278] [2021-11-07 08:54:20,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:54:20,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:54:23,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:54:24,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:54:24,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:54:24,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536129278] [2021-11-07 08:54:24,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536129278] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:54:24,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:54:24,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-07 08:54:24,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769765649] [2021-11-07 08:54:24,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:54:24,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 08:54:24,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:54:24,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 08:54:24,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-11-07 08:54:24,347 INFO L87 Difference]: Start difference. First operand 909 states and 1050 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:54:26,392 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:54:28,535 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:54:30,679 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:54:32,775 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:54:34,880 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 [] [2021-11-07 08:54:54,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:54:54,820 INFO L93 Difference]: Finished difference Result 1651 states and 1868 transitions. [2021-11-07 08:54:54,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-11-07 08:54:54,821 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-07 08:54:54,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:54:54,823 INFO L225 Difference]: With dead ends: 1651 [2021-11-07 08:54:54,823 INFO L226 Difference]: Without dead ends: 1573 [2021-11-07 08:54:54,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3229 ImplicationChecksByTransitivity, 12855.80ms TimeCoverageRelationStatistics Valid=2036, Invalid=9306, Unknown=0, NotChecked=0, Total=11342 [2021-11-07 08:54:54,826 INFO L933 BasicCegarLoop]: 549 mSDtfsCounter, 2147 mSDsluCounter, 4233 mSDsCounter, 0 mSdLazyCounter, 3011 mSolverCounterSat, 336 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16934.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2147 SdHoareTripleChecker+Valid, 4782 SdHoareTripleChecker+Invalid, 3352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.58ms SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 3011 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17987.03ms IncrementalHoareTripleChecker+Time [2021-11-07 08:54:54,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2147 Valid, 4782 Invalid, 3352 Unknown, 0 Unchecked, 28.58ms Time], IncrementalHoareTripleChecker [336 Valid, 3011 Invalid, 5 Unknown, 0 Unchecked, 17987.03ms Time] [2021-11-07 08:54:54,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2021-11-07 08:54:54,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 991. [2021-11-07 08:54:54,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 986 states have (on average 1.167342799188641) internal successors, (1151), 990 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:54:54,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1151 transitions. [2021-11-07 08:54:54,912 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1151 transitions. Word has length 94 [2021-11-07 08:54:54,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:54:54,913 INFO L470 AbstractCegarLoop]: Abstraction has 991 states and 1151 transitions. [2021-11-07 08:54:54,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:54:54,913 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1151 transitions. [2021-11-07 08:54:54,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-07 08:54:54,914 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:54:54,914 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] [2021-11-07 08:54:54,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-07 08:54:54,914 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:54:54,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:54:54,915 INFO L85 PathProgramCache]: Analyzing trace with hash 135454582, now seen corresponding path program 1 times [2021-11-07 08:54:54,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:54:54,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670383082] [2021-11-07 08:54:54,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:54:54,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:54:55,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:54:55,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:54:55,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:54:55,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670383082] [2021-11-07 08:54:55,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670383082] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:54:55,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:54:55,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 08:54:55,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536144612] [2021-11-07 08:54:55,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:54:55,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 08:54:55,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:54:55,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 08:54:55,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:54:55,316 INFO L87 Difference]: Start difference. First operand 991 states and 1151 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:54:56,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:54:56,227 INFO L93 Difference]: Finished difference Result 1175 states and 1353 transitions. [2021-11-07 08:54:56,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 08:54:56,227 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-07 08:54:56,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:54:56,230 INFO L225 Difference]: With dead ends: 1175 [2021-11-07 08:54:56,230 INFO L226 Difference]: Without dead ends: 1134 [2021-11-07 08:54:56,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 329.91ms TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-11-07 08:54:56,230 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 214 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 620.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.47ms SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 658.03ms IncrementalHoareTripleChecker+Time [2021-11-07 08:54:56,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 1248 Invalid, 372 Unknown, 0 Unchecked, 2.47ms Time], IncrementalHoareTripleChecker [72 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 658.03ms Time] [2021-11-07 08:54:56,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2021-11-07 08:54:56,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 989. [2021-11-07 08:54:56,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 984 states have (on average 1.1656504065040652) internal successors, (1147), 988 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:54:56,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1147 transitions. [2021-11-07 08:54:56,325 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1147 transitions. Word has length 95 [2021-11-07 08:54:56,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:54:56,325 INFO L470 AbstractCegarLoop]: Abstraction has 989 states and 1147 transitions. [2021-11-07 08:54:56,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:54:56,325 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1147 transitions. [2021-11-07 08:54:56,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-07 08:54:56,326 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:54:56,326 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] [2021-11-07 08:54:56,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-07 08:54:56,327 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:54:56,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:54:56,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1064569996, now seen corresponding path program 1 times [2021-11-07 08:54:56,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:54:56,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081345987] [2021-11-07 08:54:56,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:54:56,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:54:56,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:54:57,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:54:57,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:54:57,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081345987] [2021-11-07 08:54:57,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081345987] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:54:57,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:54:57,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 08:54:57,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678224288] [2021-11-07 08:54:57,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:54:57,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 08:54:57,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:54:57,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 08:54:57,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:54:57,020 INFO L87 Difference]: Start difference. First operand 989 states and 1147 transitions. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:54:59,061 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:55:01,200 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:55:03,359 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:55:06,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:55:06,991 INFO L93 Difference]: Finished difference Result 1410 states and 1607 transitions. [2021-11-07 08:55:06,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-07 08:55:06,992 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-07 08:55:06,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:55:06,994 INFO L225 Difference]: With dead ends: 1410 [2021-11-07 08:55:06,994 INFO L226 Difference]: Without dead ends: 1328 [2021-11-07 08:55:06,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1826.63ms TimeCoverageRelationStatistics Valid=246, Invalid=624, Unknown=0, NotChecked=0, Total=870 [2021-11-07 08:55:07,003 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 1364 mSDsluCounter, 976 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 105 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7713.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1364 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.29ms SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8246.26ms IncrementalHoareTripleChecker+Time [2021-11-07 08:55:07,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1364 Valid, 1260 Invalid, 758 Unknown, 0 Unchecked, 8.29ms Time], IncrementalHoareTripleChecker [105 Valid, 650 Invalid, 3 Unknown, 0 Unchecked, 8246.26ms Time] [2021-11-07 08:55:07,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2021-11-07 08:55:07,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 1115. [2021-11-07 08:55:07,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1110 states have (on average 1.1567567567567567) internal successors, (1284), 1114 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:55:07,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1284 transitions. [2021-11-07 08:55:07,089 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1284 transitions. Word has length 95 [2021-11-07 08:55:07,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:55:07,089 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 1284 transitions. [2021-11-07 08:55:07,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:55:07,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1284 transitions. [2021-11-07 08:55:07,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-07 08:55:07,090 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:55:07,090 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] [2021-11-07 08:55:07,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-07 08:55:07,090 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:55:07,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:55:07,091 INFO L85 PathProgramCache]: Analyzing trace with hash -806404558, now seen corresponding path program 1 times [2021-11-07 08:55:07,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:55:07,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563804873] [2021-11-07 08:55:07,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:55:07,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:55:11,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:55:12,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:55:12,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:55:12,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563804873] [2021-11-07 08:55:12,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563804873] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:55:12,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:55:12,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-07 08:55:12,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327297373] [2021-11-07 08:55:12,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:55:12,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 08:55:12,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:55:12,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 08:55:12,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-11-07 08:55:12,700 INFO L87 Difference]: Start difference. First operand 1115 states and 1284 transitions. Second operand has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:55:14,743 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:55:16,877 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:55:19,052 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:55:21,173 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:55:23,302 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:55:25,391 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:55:27,476 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 [] [2021-11-07 08:55:44,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:55:44,844 INFO L93 Difference]: Finished difference Result 1486 states and 1677 transitions. [2021-11-07 08:55:44,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-11-07 08:55:44,844 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-07 08:55:44,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:55:44,846 INFO L225 Difference]: With dead ends: 1486 [2021-11-07 08:55:44,846 INFO L226 Difference]: Without dead ends: 1455 [2021-11-07 08:55:44,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1765 ImplicationChecksByTransitivity, 9800.49ms TimeCoverageRelationStatistics Valid=1105, Invalid=5375, Unknown=0, NotChecked=0, Total=6480 [2021-11-07 08:55:44,848 INFO L933 BasicCegarLoop]: 485 mSDtfsCounter, 2102 mSDsluCounter, 4217 mSDsCounter, 0 mSdLazyCounter, 2752 mSolverCounterSat, 295 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21641.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2102 SdHoareTripleChecker+Valid, 4702 SdHoareTripleChecker+Invalid, 3054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.43ms SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 2752 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22933.37ms IncrementalHoareTripleChecker+Time [2021-11-07 08:55:44,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2102 Valid, 4702 Invalid, 3054 Unknown, 0 Unchecked, 31.43ms Time], IncrementalHoareTripleChecker [295 Valid, 2752 Invalid, 7 Unknown, 0 Unchecked, 22933.37ms Time] [2021-11-07 08:55:44,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2021-11-07 08:55:44,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1113. [2021-11-07 08:55:44,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 1108 states have (on average 1.1561371841155235) internal successors, (1281), 1112 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:55:44,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1281 transitions. [2021-11-07 08:55:44,975 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1281 transitions. Word has length 95 [2021-11-07 08:55:44,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:55:44,975 INFO L470 AbstractCegarLoop]: Abstraction has 1113 states and 1281 transitions. [2021-11-07 08:55:44,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.0) internal successors, (95), 19 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:55:44,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1281 transitions. [2021-11-07 08:55:44,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-07 08:55:44,976 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:55:44,976 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:55:44,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-07 08:55:44,977 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:55:44,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:55:44,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1162735838, now seen corresponding path program 1 times [2021-11-07 08:55:44,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:55:44,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609635318] [2021-11-07 08:55:44,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:55:44,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:55:49,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:55:50,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:55:50,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:55:50,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609635318] [2021-11-07 08:55:50,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609635318] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:55:50,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:55:50,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-07 08:55:50,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149989354] [2021-11-07 08:55:50,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:55:50,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 08:55:50,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:55:50,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 08:55:50,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-07 08:55:50,318 INFO L87 Difference]: Start difference. First operand 1113 states and 1281 transitions. Second operand has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 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) [2021-11-07 08:55:52,364 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:55:54,480 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:55:56,582 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:55:58,699 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:56:00,803 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:56:02,947 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:56:05,097 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:56:07,225 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 [] [2021-11-07 08:56:11,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:56:11,303 INFO L93 Difference]: Finished difference Result 1579 states and 1801 transitions. [2021-11-07 08:56:11,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 08:56:11,304 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 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 [2021-11-07 08:56:11,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:56:11,306 INFO L225 Difference]: With dead ends: 1579 [2021-11-07 08:56:11,306 INFO L226 Difference]: Without dead ends: 1577 [2021-11-07 08:56:11,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 2260.89ms TimeCoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2021-11-07 08:56:11,307 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 1198 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 72 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18120.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1198 SdHoareTripleChecker+Valid, 2120 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.02ms SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19207.73ms IncrementalHoareTripleChecker+Time [2021-11-07 08:56:11,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1198 Valid, 2120 Invalid, 851 Unknown, 0 Unchecked, 11.02ms Time], IncrementalHoareTripleChecker [72 Valid, 771 Invalid, 8 Unknown, 0 Unchecked, 19207.73ms Time] [2021-11-07 08:56:11,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1577 states. [2021-11-07 08:56:11,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1577 to 1121. [2021-11-07 08:56:11,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1121 states, 1116 states have (on average 1.1559139784946237) internal successors, (1290), 1120 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:56:11,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1290 transitions. [2021-11-07 08:56:11,410 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1290 transitions. Word has length 99 [2021-11-07 08:56:11,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:56:11,410 INFO L470 AbstractCegarLoop]: Abstraction has 1121 states and 1290 transitions. [2021-11-07 08:56:11,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 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) [2021-11-07 08:56:11,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1290 transitions. [2021-11-07 08:56:11,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-07 08:56:11,411 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:56:11,411 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] [2021-11-07 08:56:11,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-07 08:56:11,412 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:56:11,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:56:11,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1773074330, now seen corresponding path program 1 times [2021-11-07 08:56:11,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:56:11,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994809934] [2021-11-07 08:56:11,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:56:11,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:56:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:56:11,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:56:11,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:56:11,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994809934] [2021-11-07 08:56:11,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994809934] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:56:11,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:56:11,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 08:56:11,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177640690] [2021-11-07 08:56:11,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:56:11,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:56:11,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:56:11,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:56:11,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:56:11,658 INFO L87 Difference]: Start difference. First operand 1121 states and 1290 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 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) [2021-11-07 08:56:11,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:56:11,852 INFO L93 Difference]: Finished difference Result 1516 states and 1742 transitions. [2021-11-07 08:56:11,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 08:56:11,853 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 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 [2021-11-07 08:56:11,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:56:11,854 INFO L225 Difference]: With dead ends: 1516 [2021-11-07 08:56:11,854 INFO L226 Difference]: Without dead ends: 831 [2021-11-07 08:56:11,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 156.60ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 08:56:11,855 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 96 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.82ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.19ms IncrementalHoareTripleChecker+Time [2021-11-07 08:56:11,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 1483 Invalid, 22 Unknown, 0 Unchecked, 0.82ms Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 55.19ms Time] [2021-11-07 08:56:11,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2021-11-07 08:56:11,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 708. [2021-11-07 08:56:11,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 703 states have (on average 1.1479374110953058) internal successors, (807), 707 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:56:11,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 807 transitions. [2021-11-07 08:56:11,905 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 807 transitions. Word has length 101 [2021-11-07 08:56:11,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:56:11,906 INFO L470 AbstractCegarLoop]: Abstraction has 708 states and 807 transitions. [2021-11-07 08:56:11,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 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) [2021-11-07 08:56:11,906 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 807 transitions. [2021-11-07 08:56:11,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 08:56:11,907 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:56:11,907 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] [2021-11-07 08:56:11,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-07 08:56:11,907 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:56:11,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:56:11,907 INFO L85 PathProgramCache]: Analyzing trace with hash 559822594, now seen corresponding path program 1 times [2021-11-07 08:56:11,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:56:11,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341335599] [2021-11-07 08:56:11,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:56:11,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:56:13,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:56:14,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:56:14,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:56:14,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341335599] [2021-11-07 08:56:14,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341335599] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:56:14,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:56:14,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-07 08:56:14,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063595395] [2021-11-07 08:56:14,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:56:14,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 08:56:14,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:56:14,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 08:56:14,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-11-07 08:56:14,832 INFO L87 Difference]: Start difference. First operand 708 states and 807 transitions. Second operand has 16 states, 16 states have (on average 6.4375) internal successors, (103), 16 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:56:16,875 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:56:18,980 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:56:21,144 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:56:23,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:56:23,388 INFO L93 Difference]: Finished difference Result 939 states and 1058 transitions. [2021-11-07 08:56:23,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 08:56:23,389 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.4375) internal successors, (103), 16 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2021-11-07 08:56:23,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:56:23,390 INFO L225 Difference]: With dead ends: 939 [2021-11-07 08:56:23,390 INFO L226 Difference]: Without dead ends: 937 [2021-11-07 08:56:23,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1725.39ms TimeCoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2021-11-07 08:56:23,390 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 1104 mSDsluCounter, 1398 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 49 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6960.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 1629 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.81ms SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7373.12ms IncrementalHoareTripleChecker+Time [2021-11-07 08:56:23,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1104 Valid, 1629 Invalid, 425 Unknown, 0 Unchecked, 5.81ms Time], IncrementalHoareTripleChecker [49 Valid, 373 Invalid, 3 Unknown, 0 Unchecked, 7373.12ms Time] [2021-11-07 08:56:23,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2021-11-07 08:56:23,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 716. [2021-11-07 08:56:23,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 711 states have (on average 1.1448663853727146) internal successors, (814), 715 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:56:23,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 814 transitions. [2021-11-07 08:56:23,445 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 814 transitions. Word has length 103 [2021-11-07 08:56:23,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:56:23,445 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 814 transitions. [2021-11-07 08:56:23,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.4375) internal successors, (103), 16 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:56:23,445 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 814 transitions. [2021-11-07 08:56:23,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-07 08:56:23,446 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:56:23,446 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] [2021-11-07 08:56:23,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-07 08:56:23,446 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:56:23,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:56:23,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1142405382, now seen corresponding path program 1 times [2021-11-07 08:56:23,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:56:23,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852596385] [2021-11-07 08:56:23,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:56:23,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:56:23,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:56:23,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:56:23,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:56:23,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852596385] [2021-11-07 08:56:23,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852596385] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:56:23,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:56:23,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:56:23,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544910137] [2021-11-07 08:56:23,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:56:23,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:56:23,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:56:23,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:56:23,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:56:23,611 INFO L87 Difference]: Start difference. First operand 716 states and 814 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 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) [2021-11-07 08:56:23,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:56:23,744 INFO L93 Difference]: Finished difference Result 1201 states and 1363 transitions. [2021-11-07 08:56:23,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:56:23,745 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 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 [2021-11-07 08:56:23,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:56:23,746 INFO L225 Difference]: With dead ends: 1201 [2021-11-07 08:56:23,746 INFO L226 Difference]: Without dead ends: 1060 [2021-11-07 08:56:23,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.12ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:56:23,747 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 260 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.66ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.68ms IncrementalHoareTripleChecker+Time [2021-11-07 08:56:23,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 812 Invalid, 10 Unknown, 0 Unchecked, 0.66ms Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 27.68ms Time] [2021-11-07 08:56:23,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2021-11-07 08:56:23,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 722. [2021-11-07 08:56:23,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 717 states have (on average 1.1436541143654115) internal successors, (820), 721 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:56:23,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 820 transitions. [2021-11-07 08:56:23,804 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 820 transitions. Word has length 106 [2021-11-07 08:56:23,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:56:23,805 INFO L470 AbstractCegarLoop]: Abstraction has 722 states and 820 transitions. [2021-11-07 08:56:23,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 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) [2021-11-07 08:56:23,805 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 820 transitions. [2021-11-07 08:56:23,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-07 08:56:23,806 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:56:23,806 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] [2021-11-07 08:56:23,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-07 08:56:23,806 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:56:23,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:56:23,807 INFO L85 PathProgramCache]: Analyzing trace with hash 391613226, now seen corresponding path program 1 times [2021-11-07 08:56:23,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:56:23,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27617835] [2021-11-07 08:56:23,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:56:23,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:56:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:56:24,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:56:24,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:56:24,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27617835] [2021-11-07 08:56:24,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27617835] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:56:24,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:56:24,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:56:24,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148382354] [2021-11-07 08:56:24,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:56:24,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:56:24,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:56:24,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:56:24,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:56:24,001 INFO L87 Difference]: Start difference. First operand 722 states and 820 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:56:24,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:56:24,131 INFO L93 Difference]: Finished difference Result 868 states and 983 transitions. [2021-11-07 08:56:24,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:56:24,132 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-07 08:56:24,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:56:24,133 INFO L225 Difference]: With dead ends: 868 [2021-11-07 08:56:24,133 INFO L226 Difference]: Without dead ends: 675 [2021-11-07 08:56:24,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 81.20ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:56:24,134 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 103 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.54ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.50ms IncrementalHoareTripleChecker+Time [2021-11-07 08:56:24,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 968 Invalid, 15 Unknown, 0 Unchecked, 0.54ms Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 35.50ms Time] [2021-11-07 08:56:24,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2021-11-07 08:56:24,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 613. [2021-11-07 08:56:24,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 608 states have (on average 1.1266447368421053) internal successors, (685), 612 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:56:24,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 685 transitions. [2021-11-07 08:56:24,180 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 685 transitions. Word has length 108 [2021-11-07 08:56:24,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:56:24,180 INFO L470 AbstractCegarLoop]: Abstraction has 613 states and 685 transitions. [2021-11-07 08:56:24,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:56:24,180 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 685 transitions. [2021-11-07 08:56:24,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-07 08:56:24,181 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:56:24,181 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] [2021-11-07 08:56:24,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-07 08:56:24,181 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:56:24,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:56:24,182 INFO L85 PathProgramCache]: Analyzing trace with hash 748826966, now seen corresponding path program 1 times [2021-11-07 08:56:24,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:56:24,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111292124] [2021-11-07 08:56:24,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:56:24,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:56:24,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:56:24,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:56:24,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:56:24,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111292124] [2021-11-07 08:56:24,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111292124] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:56:24,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:56:24,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:56:24,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349421004] [2021-11-07 08:56:24,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:56:24,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:56:24,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:56:24,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:56:24,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:56:24,757 INFO L87 Difference]: Start difference. First operand 613 states and 685 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:56:24,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:56:24,819 INFO L93 Difference]: Finished difference Result 790 states and 885 transitions. [2021-11-07 08:56:24,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:56:24,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-07 08:56:24,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:56:24,820 INFO L225 Difference]: With dead ends: 790 [2021-11-07 08:56:24,821 INFO L226 Difference]: Without dead ends: 643 [2021-11-07 08:56:24,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.58ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:56:24,821 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 112 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.31ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.14ms IncrementalHoareTripleChecker+Time [2021-11-07 08:56:24,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 377 Invalid, 4 Unknown, 0 Unchecked, 0.31ms Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 14.14ms Time] [2021-11-07 08:56:24,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-11-07 08:56:24,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 607. [2021-11-07 08:56:24,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 602 states have (on average 1.1212624584717608) internal successors, (675), 606 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:56:24,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 675 transitions. [2021-11-07 08:56:24,870 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 675 transitions. Word has length 109 [2021-11-07 08:56:24,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:56:24,870 INFO L470 AbstractCegarLoop]: Abstraction has 607 states and 675 transitions. [2021-11-07 08:56:24,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:56:24,871 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 675 transitions. [2021-11-07 08:56:24,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-07 08:56:24,871 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:56:24,871 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:56:24,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-07 08:56:24,872 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:56:24,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:56:24,873 INFO L85 PathProgramCache]: Analyzing trace with hash -911345929, now seen corresponding path program 1 times [2021-11-07 08:56:24,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:56:24,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879216980] [2021-11-07 08:56:24,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:56:24,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:56:24,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:56:25,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:56:25,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:56:25,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879216980] [2021-11-07 08:56:25,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879216980] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:56:25,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:56:25,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:56:25,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291748450] [2021-11-07 08:56:25,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:56:25,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:56:25,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:56:25,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:56:25,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:56:25,091 INFO L87 Difference]: Start difference. First operand 607 states and 675 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:56:25,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:56:25,269 INFO L93 Difference]: Finished difference Result 903 states and 1000 transitions. [2021-11-07 08:56:25,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 08:56:25,269 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-07 08:56:25,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:56:25,270 INFO L225 Difference]: With dead ends: 903 [2021-11-07 08:56:25,270 INFO L226 Difference]: Without dead ends: 762 [2021-11-07 08:56:25,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 95.38ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:56:25,271 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 151 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.74ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.61ms IncrementalHoareTripleChecker+Time [2021-11-07 08:56:25,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 981 Invalid, 18 Unknown, 0 Unchecked, 0.74ms Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 60.61ms Time] [2021-11-07 08:56:25,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2021-11-07 08:56:25,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 610. [2021-11-07 08:56:25,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 605 states have (on average 1.1206611570247933) internal successors, (678), 609 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:56:25,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 678 transitions. [2021-11-07 08:56:25,321 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 678 transitions. Word has length 110 [2021-11-07 08:56:25,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:56:25,321 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 678 transitions. [2021-11-07 08:56:25,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:56:25,321 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 678 transitions. [2021-11-07 08:56:25,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-07 08:56:25,322 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:56:25,322 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:56:25,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-07 08:56:25,322 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:56:25,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:56:25,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1817647446, now seen corresponding path program 1 times [2021-11-07 08:56:25,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:56:25,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378831117] [2021-11-07 08:56:25,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:56:25,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:56:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:56:25,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:56:25,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:56:25,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378831117] [2021-11-07 08:56:25,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378831117] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:56:25,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:56:25,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:56:25,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494778242] [2021-11-07 08:56:25,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:56:25,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:56:25,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:56:25,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:56:25,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:56:25,813 INFO L87 Difference]: Start difference. First operand 610 states and 678 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:56:25,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:56:25,935 INFO L93 Difference]: Finished difference Result 883 states and 981 transitions. [2021-11-07 08:56:25,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:56:25,935 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-11-07 08:56:25,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:56:25,936 INFO L225 Difference]: With dead ends: 883 [2021-11-07 08:56:25,936 INFO L226 Difference]: Without dead ends: 634 [2021-11-07 08:56:25,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 80.62ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:56:25,937 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 209 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.58ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.67ms IncrementalHoareTripleChecker+Time [2021-11-07 08:56:25,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 504 Invalid, 11 Unknown, 0 Unchecked, 0.58ms Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 38.67ms Time] [2021-11-07 08:56:25,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2021-11-07 08:56:26,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 598. [2021-11-07 08:56:26,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 593 states have (on average 1.1129848229342327) internal successors, (660), 597 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:56:26,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 660 transitions. [2021-11-07 08:56:26,003 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 660 transitions. Word has length 111 [2021-11-07 08:56:26,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:56:26,003 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 660 transitions. [2021-11-07 08:56:26,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:56:26,003 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 660 transitions. [2021-11-07 08:56:26,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-07 08:56:26,004 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:56:26,004 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:56:26,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-07 08:56:26,004 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:56:26,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:56:26,005 INFO L85 PathProgramCache]: Analyzing trace with hash -908478147, now seen corresponding path program 1 times [2021-11-07 08:56:26,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:56:26,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939646514] [2021-11-07 08:56:26,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:56:26,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:56:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:56:29,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:56:29,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:56:29,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939646514] [2021-11-07 08:56:29,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939646514] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:56:29,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:56:29,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-07 08:56:29,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931346845] [2021-11-07 08:56:29,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:56:29,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 08:56:29,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:56:29,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 08:56:29,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-07 08:56:29,137 INFO L87 Difference]: Start difference. First operand 598 states and 660 transitions. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 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) [2021-11-07 08:56:31,185 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:56:33,309 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:56:35,441 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:56:37,613 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:56:39,752 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:56:41,875 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:56:43,978 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 [] [2021-11-07 08:56:46,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:56:46,024 INFO L93 Difference]: Finished difference Result 945 states and 1036 transitions. [2021-11-07 08:56:46,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-07 08:56:46,024 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 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 [2021-11-07 08:56:46,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:56:46,025 INFO L225 Difference]: With dead ends: 945 [2021-11-07 08:56:46,026 INFO L226 Difference]: Without dead ends: 702 [2021-11-07 08:56:46,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1447.95ms TimeCoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2021-11-07 08:56:46,026 INFO L933 BasicCegarLoop]: 304 mSDtfsCounter, 960 mSDsluCounter, 1552 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 22 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14895.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 1856 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.50ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15823.44ms IncrementalHoareTripleChecker+Time [2021-11-07 08:56:46,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [960 Valid, 1856 Invalid, 336 Unknown, 0 Unchecked, 5.50ms Time], IncrementalHoareTripleChecker [22 Valid, 307 Invalid, 7 Unknown, 0 Unchecked, 15823.44ms Time] [2021-11-07 08:56:46,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2021-11-07 08:56:46,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 585. [2021-11-07 08:56:46,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 580 states have (on average 1.1051724137931034) internal successors, (641), 584 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:56:46,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 641 transitions. [2021-11-07 08:56:46,072 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 641 transitions. Word has length 112 [2021-11-07 08:56:46,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:56:46,073 INFO L470 AbstractCegarLoop]: Abstraction has 585 states and 641 transitions. [2021-11-07 08:56:46,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 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) [2021-11-07 08:56:46,073 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 641 transitions. [2021-11-07 08:56:46,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-07 08:56:46,074 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:56:46,074 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] [2021-11-07 08:56:46,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-07 08:56:46,074 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:56:46,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:56:46,075 INFO L85 PathProgramCache]: Analyzing trace with hash -689623429, now seen corresponding path program 1 times [2021-11-07 08:56:46,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:56:46,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584970262] [2021-11-07 08:56:46,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:56:46,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:56:52,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:56:53,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:56:53,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:56:53,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584970262] [2021-11-07 08:56:53,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584970262] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:56:53,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:56:53,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-07 08:56:53,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199533690] [2021-11-07 08:56:53,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:56:53,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 08:56:53,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:56:53,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 08:56:53,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-07 08:56:53,343 INFO L87 Difference]: Start difference. First operand 585 states and 641 transitions. Second operand has 14 states, 14 states have (on average 8.0) internal successors, (112), 13 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) [2021-11-07 08:56:55,385 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:56:57,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:56:57,087 INFO L93 Difference]: Finished difference Result 798 states and 863 transitions. [2021-11-07 08:56:57,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-07 08:56:57,088 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.0) internal successors, (112), 13 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 [2021-11-07 08:56:57,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:56:57,089 INFO L225 Difference]: With dead ends: 798 [2021-11-07 08:56:57,089 INFO L226 Difference]: Without dead ends: 738 [2021-11-07 08:56:57,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1112.74ms TimeCoverageRelationStatistics Valid=215, Invalid=487, Unknown=0, NotChecked=0, Total=702 [2021-11-07 08:56:57,090 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 1093 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2782.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.48ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2986.28ms IncrementalHoareTripleChecker+Time [2021-11-07 08:56:57,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1093 Valid, 1187 Invalid, 287 Unknown, 0 Unchecked, 4.48ms Time], IncrementalHoareTripleChecker [8 Valid, 278 Invalid, 1 Unknown, 0 Unchecked, 2986.28ms Time] [2021-11-07 08:56:57,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2021-11-07 08:56:57,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 571. [2021-11-07 08:56:57,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 566 states have (on average 1.1007067137809188) internal successors, (623), 570 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:56:57,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 623 transitions. [2021-11-07 08:56:57,147 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 623 transitions. Word has length 112 [2021-11-07 08:56:57,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:56:57,147 INFO L470 AbstractCegarLoop]: Abstraction has 571 states and 623 transitions. [2021-11-07 08:56:57,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.0) internal successors, (112), 13 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) [2021-11-07 08:56:57,148 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 623 transitions. [2021-11-07 08:56:57,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-07 08:56:57,149 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:56:57,149 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] [2021-11-07 08:56:57,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-07 08:56:57,149 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:56:57,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:56:57,149 INFO L85 PathProgramCache]: Analyzing trace with hash -2122633611, now seen corresponding path program 1 times [2021-11-07 08:56:57,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:56:57,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98116483] [2021-11-07 08:56:57,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:56:57,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:56:57,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:56:58,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:56:58,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:56:58,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98116483] [2021-11-07 08:56:58,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98116483] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:56:58,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:56:58,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-07 08:56:58,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637742311] [2021-11-07 08:56:58,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:56:58,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 08:56:58,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:56:58,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 08:56:58,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-11-07 08:56:58,673 INFO L87 Difference]: Start difference. First operand 571 states and 623 transitions. Second operand has 15 states, 15 states have (on average 7.466666666666667) internal successors, (112), 15 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) [2021-11-07 08:57:00,716 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:57:02,894 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:57:05,004 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:57:07,164 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:57:09,316 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:57:11,451 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:57:13,585 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 [] [2021-11-07 08:57:17,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:57:17,684 INFO L93 Difference]: Finished difference Result 920 states and 1003 transitions. [2021-11-07 08:57:17,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 08:57:17,684 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.466666666666667) internal successors, (112), 15 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 [2021-11-07 08:57:17,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:57:17,686 INFO L225 Difference]: With dead ends: 920 [2021-11-07 08:57:17,686 INFO L226 Difference]: Without dead ends: 862 [2021-11-07 08:57:17,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 2678.40ms TimeCoverageRelationStatistics Valid=318, Invalid=804, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 08:57:17,686 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 1656 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 113 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15706.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1656 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.15ms SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16805.94ms IncrementalHoareTripleChecker+Time [2021-11-07 08:57:17,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1656 Valid, 1329 Invalid, 682 Unknown, 0 Unchecked, 9.15ms Time], IncrementalHoareTripleChecker [113 Valid, 562 Invalid, 7 Unknown, 0 Unchecked, 16805.94ms Time] [2021-11-07 08:57:17,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2021-11-07 08:57:17,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 596. [2021-11-07 08:57:17,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 591 states have (on average 1.101522842639594) internal successors, (651), 595 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:57:17,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 651 transitions. [2021-11-07 08:57:17,736 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 651 transitions. Word has length 112 [2021-11-07 08:57:17,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:57:17,736 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 651 transitions. [2021-11-07 08:57:17,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.466666666666667) internal successors, (112), 15 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) [2021-11-07 08:57:17,736 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 651 transitions. [2021-11-07 08:57:17,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-07 08:57:17,737 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:57:17,737 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] [2021-11-07 08:57:17,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-07 08:57:17,737 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:57:17,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:57:17,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476549, now seen corresponding path program 1 times [2021-11-07 08:57:17,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:57:17,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610405116] [2021-11-07 08:57:17,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:57:17,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:57:17,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:57:17,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:57:17,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:57:17,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610405116] [2021-11-07 08:57:17,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610405116] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:57:17,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:57:17,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:57:17,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517068245] [2021-11-07 08:57:17,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:57:17,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:57:17,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:57:17,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:57:17,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:57:17,894 INFO L87 Difference]: Start difference. First operand 596 states and 651 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 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) [2021-11-07 08:57:17,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:57:17,995 INFO L93 Difference]: Finished difference Result 647 states and 704 transitions. [2021-11-07 08:57:17,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:57:17,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 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 [2021-11-07 08:57:17,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:57:17,997 INFO L225 Difference]: With dead ends: 647 [2021-11-07 08:57:17,997 INFO L226 Difference]: Without dead ends: 561 [2021-11-07 08:57:17,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.24ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:57:17,998 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 58 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.44ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.00ms IncrementalHoareTripleChecker+Time [2021-11-07 08:57:17,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 653 Invalid, 10 Unknown, 0 Unchecked, 0.44ms Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 32.00ms Time] [2021-11-07 08:57:17,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-11-07 08:57:18,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 543. [2021-11-07 08:57:18,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 538 states have (on average 1.0929368029739777) internal successors, (588), 542 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:57:18,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 588 transitions. [2021-11-07 08:57:18,043 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 588 transitions. Word has length 112 [2021-11-07 08:57:18,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:57:18,044 INFO L470 AbstractCegarLoop]: Abstraction has 543 states and 588 transitions. [2021-11-07 08:57:18,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 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) [2021-11-07 08:57:18,044 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 588 transitions. [2021-11-07 08:57:18,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-07 08:57:18,045 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:57:18,045 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] [2021-11-07 08:57:18,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-07 08:57:18,045 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:57:18,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:57:18,045 INFO L85 PathProgramCache]: Analyzing trace with hash -2035755465, now seen corresponding path program 1 times [2021-11-07 08:57:18,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:57:18,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648437601] [2021-11-07 08:57:18,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:57:18,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:57:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:57:29,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:57:29,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:57:29,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648437601] [2021-11-07 08:57:29,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648437601] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:57:29,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:57:29,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-11-07 08:57:29,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514115195] [2021-11-07 08:57:29,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:57:29,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-07 08:57:29,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:57:29,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-07 08:57:29,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2021-11-07 08:57:29,287 INFO L87 Difference]: Start difference. First operand 543 states and 588 transitions. Second operand has 35 states, 35 states have (on average 3.2) internal successors, (112), 34 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) [2021-11-07 08:57:31,330 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:57:33,477 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:57:35,620 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:57:37,748 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:57:39,884 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:57:42,027 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:57:44,140 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:57:46,264 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:57:48,371 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:57:50,526 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:57:52,660 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:57:54,813 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:57:56,954 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:57:59,103 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 [] [2021-11-07 08:58:13,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:58:13,937 INFO L93 Difference]: Finished difference Result 780 states and 834 transitions. [2021-11-07 08:58:13,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-07 08:58:13,937 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.2) internal successors, (112), 34 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 [2021-11-07 08:58:13,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:58:13,938 INFO L225 Difference]: With dead ends: 780 [2021-11-07 08:58:13,938 INFO L226 Difference]: Without dead ends: 733 [2021-11-07 08:58:13,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1276 ImplicationChecksByTransitivity, 12639.22ms TimeCoverageRelationStatistics Valid=1029, Invalid=4227, Unknown=0, NotChecked=0, Total=5256 [2021-11-07 08:58:13,939 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 2393 mSDsluCounter, 2274 mSDsCounter, 0 mSdLazyCounter, 1338 mSolverCounterSat, 180 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32526.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2393 SdHoareTripleChecker+Valid, 2480 SdHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.97ms SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1338 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34707.38ms IncrementalHoareTripleChecker+Time [2021-11-07 08:58:13,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2393 Valid, 2480 Invalid, 1532 Unknown, 0 Unchecked, 18.97ms Time], IncrementalHoareTripleChecker [180 Valid, 1338 Invalid, 14 Unknown, 0 Unchecked, 34707.38ms Time] [2021-11-07 08:58:13,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2021-11-07 08:58:13,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 527. [2021-11-07 08:58:13,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 522 states have (on average 1.0919540229885059) internal successors, (570), 526 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:58:13,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 570 transitions. [2021-11-07 08:58:13,984 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 570 transitions. Word has length 112 [2021-11-07 08:58:13,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:58:13,985 INFO L470 AbstractCegarLoop]: Abstraction has 527 states and 570 transitions. [2021-11-07 08:58:13,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.2) internal successors, (112), 34 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) [2021-11-07 08:58:13,985 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 570 transitions. [2021-11-07 08:58:13,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-07 08:58:13,986 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:58:13,986 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] [2021-11-07 08:58:13,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-07 08:58:13,986 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:58:13,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:58:13,986 INFO L85 PathProgramCache]: Analyzing trace with hash 688839446, now seen corresponding path program 1 times [2021-11-07 08:58:13,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:58:13,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273296752] [2021-11-07 08:58:13,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:58:13,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:58:14,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:58:14,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:58:14,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:58:14,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273296752] [2021-11-07 08:58:14,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273296752] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:58:14,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:58:14,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:58:14,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586767442] [2021-11-07 08:58:14,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:58:14,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:58:14,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:58:14,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:58:14,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:58:14,175 INFO L87 Difference]: Start difference. First operand 527 states and 570 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 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) [2021-11-07 08:58:14,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:58:14,324 INFO L93 Difference]: Finished difference Result 612 states and 664 transitions. [2021-11-07 08:58:14,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:58:14,324 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 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 [2021-11-07 08:58:14,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:58:14,325 INFO L225 Difference]: With dead ends: 612 [2021-11-07 08:58:14,326 INFO L226 Difference]: Without dead ends: 563 [2021-11-07 08:58:14,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 112.54ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:58:14,326 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 102 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.55ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.23ms IncrementalHoareTripleChecker+Time [2021-11-07 08:58:14,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 780 Invalid, 14 Unknown, 0 Unchecked, 0.55ms Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 45.23ms Time] [2021-11-07 08:58:14,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-11-07 08:58:14,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 527. [2021-11-07 08:58:14,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 522 states have (on average 1.082375478927203) internal successors, (565), 526 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:58:14,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 565 transitions. [2021-11-07 08:58:14,373 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 565 transitions. Word has length 113 [2021-11-07 08:58:14,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:58:14,374 INFO L470 AbstractCegarLoop]: Abstraction has 527 states and 565 transitions. [2021-11-07 08:58:14,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 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) [2021-11-07 08:58:14,374 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 565 transitions. [2021-11-07 08:58:14,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-07 08:58:14,375 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:58:14,375 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:58:14,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-07 08:58:14,375 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:58:14,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:58:14,376 INFO L85 PathProgramCache]: Analyzing trace with hash 566323022, now seen corresponding path program 1 times [2021-11-07 08:58:14,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:58:14,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266525805] [2021-11-07 08:58:14,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:58:14,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:58:14,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:58:16,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:58:16,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:58:16,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266525805] [2021-11-07 08:58:16,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266525805] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:58:16,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:58:16,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-07 08:58:16,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68174666] [2021-11-07 08:58:16,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:58:16,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-07 08:58:16,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:58:16,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-07 08:58:16,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2021-11-07 08:58:16,433 INFO L87 Difference]: Start difference. First operand 527 states and 565 transitions. Second operand has 21 states, 21 states have (on average 5.428571428571429) internal successors, (114), 21 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:58:18,476 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:58:20,595 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:58:22,700 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:58:24,796 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:58:26,924 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:58:34,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:58:34,392 INFO L93 Difference]: Finished difference Result 739 states and 778 transitions. [2021-11-07 08:58:34,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-07 08:58:34,392 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.428571428571429) internal successors, (114), 21 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-07 08:58:34,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:58:34,393 INFO L225 Difference]: With dead ends: 739 [2021-11-07 08:58:34,393 INFO L226 Difference]: Without dead ends: 669 [2021-11-07 08:58:34,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 5256.88ms TimeCoverageRelationStatistics Valid=542, Invalid=2110, Unknown=0, NotChecked=0, Total=2652 [2021-11-07 08:58:34,394 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 1490 mSDsluCounter, 1795 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 96 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12831.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1954 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.45ms SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13618.08ms IncrementalHoareTripleChecker+Time [2021-11-07 08:58:34,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1490 Valid, 1954 Invalid, 1159 Unknown, 0 Unchecked, 12.45ms Time], IncrementalHoareTripleChecker [96 Valid, 1058 Invalid, 5 Unknown, 0 Unchecked, 13618.08ms Time] [2021-11-07 08:58:34,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2021-11-07 08:58:34,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 518. [2021-11-07 08:58:34,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 513 states have (on average 1.0799220272904484) internal successors, (554), 517 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:58:34,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 554 transitions. [2021-11-07 08:58:34,445 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 554 transitions. Word has length 114 [2021-11-07 08:58:34,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:58:34,445 INFO L470 AbstractCegarLoop]: Abstraction has 518 states and 554 transitions. [2021-11-07 08:58:34,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.428571428571429) internal successors, (114), 21 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:58:34,445 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 554 transitions. [2021-11-07 08:58:34,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-07 08:58:34,446 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:58:34,446 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:58:34,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-07 08:58:34,446 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:58:34,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:58:34,447 INFO L85 PathProgramCache]: Analyzing trace with hash -330335905, now seen corresponding path program 1 times [2021-11-07 08:58:34,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:58:34,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651122047] [2021-11-07 08:58:34,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:58:34,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:58:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:58:34,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:58:34,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:58:34,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651122047] [2021-11-07 08:58:34,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651122047] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:58:34,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:58:34,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 08:58:34,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929197857] [2021-11-07 08:58:34,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:58:34,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:58:34,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:58:34,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:58:34,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:58:34,679 INFO L87 Difference]: Start difference. First operand 518 states and 554 transitions. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:58:34,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:58:34,866 INFO L93 Difference]: Finished difference Result 604 states and 643 transitions. [2021-11-07 08:58:34,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 08:58:34,867 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-07 08:58:34,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:58:34,867 INFO L225 Difference]: With dead ends: 604 [2021-11-07 08:58:34,868 INFO L226 Difference]: Without dead ends: 480 [2021-11-07 08:58:34,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 151.00ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 08:58:34,868 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 177 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.73ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.73ms IncrementalHoareTripleChecker+Time [2021-11-07 08:58:34,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 967 Invalid, 22 Unknown, 0 Unchecked, 0.73ms Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 61.73ms Time] [2021-11-07 08:58:34,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-11-07 08:58:34,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 462. [2021-11-07 08:58:34,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 458 states have (on average 1.0633187772925765) internal successors, (487), 461 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:58:34,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 487 transitions. [2021-11-07 08:58:34,909 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 487 transitions. Word has length 114 [2021-11-07 08:58:34,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:58:34,909 INFO L470 AbstractCegarLoop]: Abstraction has 462 states and 487 transitions. [2021-11-07 08:58:34,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:58:34,909 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 487 transitions. [2021-11-07 08:58:34,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-07 08:58:34,910 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:58:34,910 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:58:34,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-07 08:58:34,912 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:58:34,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:58:34,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1490036210, now seen corresponding path program 1 times [2021-11-07 08:58:34,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:58:34,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477508594] [2021-11-07 08:58:34,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:58:34,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:58:35,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:58:36,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:58:36,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:58:36,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477508594] [2021-11-07 08:58:36,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477508594] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:58:36,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:58:36,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-07 08:58:36,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911900434] [2021-11-07 08:58:36,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:58:36,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 08:58:36,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:58:36,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 08:58:36,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-11-07 08:58:36,369 INFO L87 Difference]: Start difference. First operand 462 states and 487 transitions. Second operand has 16 states, 16 states have (on average 7.125) internal successors, (114), 16 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:58:38,531 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:58:40,650 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:58:42,774 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:58:44,856 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:58:49,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:58:49,011 INFO L93 Difference]: Finished difference Result 607 states and 638 transitions. [2021-11-07 08:58:49,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 08:58:49,012 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.125) internal successors, (114), 16 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-07 08:58:49,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:58:49,013 INFO L225 Difference]: With dead ends: 607 [2021-11-07 08:58:49,013 INFO L226 Difference]: Without dead ends: 407 [2021-11-07 08:58:49,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 2142.83ms TimeCoverageRelationStatistics Valid=191, Invalid=679, Unknown=0, NotChecked=0, Total=870 [2021-11-07 08:58:49,014 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 737 mSDsluCounter, 1658 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 72 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10317.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 1943 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.14ms SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10919.46ms IncrementalHoareTripleChecker+Time [2021-11-07 08:58:49,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [737 Valid, 1943 Invalid, 833 Unknown, 0 Unchecked, 10.14ms Time], IncrementalHoareTripleChecker [72 Valid, 757 Invalid, 4 Unknown, 0 Unchecked, 10919.46ms Time] [2021-11-07 08:58:49,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-11-07 08:58:49,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 384. [2021-11-07 08:58:49,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 380 states have (on average 1.055263157894737) internal successors, (401), 383 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:58:49,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 401 transitions. [2021-11-07 08:58:49,048 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 401 transitions. Word has length 114 [2021-11-07 08:58:49,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:58:49,049 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 401 transitions. [2021-11-07 08:58:49,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.125) internal successors, (114), 16 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:58:49,049 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 401 transitions. [2021-11-07 08:58:49,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-07 08:58:49,049 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:58:49,050 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:58:49,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-11-07 08:58:49,050 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:58:49,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:58:49,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1843124592, now seen corresponding path program 1 times [2021-11-07 08:58:49,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:58:49,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406621403] [2021-11-07 08:58:49,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:58:49,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:58:54,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:58:55,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:58:55,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:58:55,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406621403] [2021-11-07 08:58:55,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406621403] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:58:55,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:58:55,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-07 08:58:55,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370481106] [2021-11-07 08:58:55,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:58:55,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 08:58:55,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:58:55,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 08:58:55,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-11-07 08:58:55,883 INFO L87 Difference]: Start difference. First operand 384 states and 401 transitions. Second operand has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:58:57,932 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 [] [2021-11-07 08:59:06,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:59:06,438 INFO L93 Difference]: Finished difference Result 449 states and 466 transitions. [2021-11-07 08:59:06,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-11-07 08:59:06,438 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-07 08:59:06,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:59:06,439 INFO L225 Difference]: With dead ends: 449 [2021-11-07 08:59:06,439 INFO L226 Difference]: Without dead ends: 447 [2021-11-07 08:59:06,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1198 ImplicationChecksByTransitivity, 5693.48ms TimeCoverageRelationStatistics Valid=1099, Invalid=4303, Unknown=0, NotChecked=0, Total=5402 [2021-11-07 08:59:06,440 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 1293 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 223 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5292.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 1337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.73ms SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5594.67ms IncrementalHoareTripleChecker+Time [2021-11-07 08:59:06,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1293 Valid, 1472 Invalid, 1337 Unknown, 0 Unchecked, 14.73ms Time], IncrementalHoareTripleChecker [223 Valid, 1113 Invalid, 1 Unknown, 0 Unchecked, 5594.67ms Time] [2021-11-07 08:59:06,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-11-07 08:59:06,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 382. [2021-11-07 08:59:06,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 379 states have (on average 1.0527704485488127) internal successors, (399), 381 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:06,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 399 transitions. [2021-11-07 08:59:06,476 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 399 transitions. Word has length 114 [2021-11-07 08:59:06,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:59:06,476 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 399 transitions. [2021-11-07 08:59:06,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:06,476 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 399 transitions. [2021-11-07 08:59:06,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-07 08:59:06,477 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:59:06,477 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, 1, 1] [2021-11-07 08:59:06,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-07 08:59:06,477 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:59:06,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:59:06,478 INFO L85 PathProgramCache]: Analyzing trace with hash 987673239, now seen corresponding path program 1 times [2021-11-07 08:59:06,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:59:06,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440205311] [2021-11-07 08:59:06,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:59:06,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:59:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:59:09,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:59:09,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:59:09,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440205311] [2021-11-07 08:59:09,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440205311] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:59:09,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:59:09,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-07 08:59:09,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854121368] [2021-11-07 08:59:09,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:59:09,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 08:59:09,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:59:09,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 08:59:09,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-11-07 08:59:09,455 INFO L87 Difference]: Start difference. First operand 382 states and 399 transitions. Second operand has 17 states, 17 states have (on average 7.0) internal successors, (119), 17 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:11,520 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 [] [2021-11-07 08:59:13,605 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:59:15,749 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:59:17,885 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:59:20,050 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:59:22,173 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:59:24,294 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:59:26,410 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:59:28,528 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:59:30,637 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:59:35,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:59:35,964 INFO L93 Difference]: Finished difference Result 512 states and 530 transitions. [2021-11-07 08:59:35,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 08:59:35,965 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 7.0) internal successors, (119), 17 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2021-11-07 08:59:35,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:59:35,966 INFO L225 Difference]: With dead ends: 512 [2021-11-07 08:59:35,966 INFO L226 Difference]: Without dead ends: 510 [2021-11-07 08:59:35,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 4188.91ms TimeCoverageRelationStatistics Valid=181, Invalid=689, Unknown=0, NotChecked=0, Total=870 [2021-11-07 08:59:35,967 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 1026 mSDsluCounter, 1449 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 43 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22307.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 1670 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.59ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23598.60ms IncrementalHoareTripleChecker+Time [2021-11-07 08:59:35,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1026 Valid, 1670 Invalid, 763 Unknown, 0 Unchecked, 10.59ms Time], IncrementalHoareTripleChecker [43 Valid, 710 Invalid, 10 Unknown, 0 Unchecked, 23598.60ms Time] [2021-11-07 08:59:35,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2021-11-07 08:59:36,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 380. [2021-11-07 08:59:36,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 378 states have (on average 1.0476190476190477) internal successors, (396), 379 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:36,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 396 transitions. [2021-11-07 08:59:36,008 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 396 transitions. Word has length 119 [2021-11-07 08:59:36,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:59:36,008 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 396 transitions. [2021-11-07 08:59:36,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.0) internal successors, (119), 17 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:36,008 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 396 transitions. [2021-11-07 08:59:36,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-07 08:59:36,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:59:36,009 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:59:36,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-11-07 08:59:36,010 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:59:36,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:59:36,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1646402588, now seen corresponding path program 1 times [2021-11-07 08:59:36,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:59:36,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350223963] [2021-11-07 08:59:36,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:59:36,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:59:39,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:59:40,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:59:40,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:59:40,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350223963] [2021-11-07 08:59:40,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350223963] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:59:40,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:59:40,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-07 08:59:40,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282614229] [2021-11-07 08:59:40,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:59:40,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 08:59:40,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:59:40,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 08:59:40,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-11-07 08:59:40,957 INFO L87 Difference]: Start difference. First operand 380 states and 396 transitions. Second operand has 15 states, 15 states have (on average 7.933333333333334) internal successors, (119), 14 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:43,002 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:59:45,143 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:59:47,299 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:59:49,419 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:59:51,542 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:59:53,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:59:53,900 INFO L93 Difference]: Finished difference Result 410 states and 423 transitions. [2021-11-07 08:59:53,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 08:59:53,901 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.933333333333334) internal successors, (119), 14 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2021-11-07 08:59:53,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:59:53,901 INFO L225 Difference]: With dead ends: 410 [2021-11-07 08:59:53,901 INFO L226 Difference]: Without dead ends: 394 [2021-11-07 08:59:53,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1760.99ms TimeCoverageRelationStatistics Valid=199, Invalid=451, Unknown=0, NotChecked=0, Total=650 [2021-11-07 08:59:53,902 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 1215 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 34 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11054.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1215 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.63ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11799.82ms IncrementalHoareTripleChecker+Time [2021-11-07 08:59:53,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1215 Valid, 685 Invalid, 365 Unknown, 0 Unchecked, 5.63ms Time], IncrementalHoareTripleChecker [34 Valid, 326 Invalid, 5 Unknown, 0 Unchecked, 11799.82ms Time] [2021-11-07 08:59:53,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-11-07 08:59:53,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 349. [2021-11-07 08:59:53,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 347 states have (on average 1.0461095100864553) internal successors, (363), 348 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:53,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 363 transitions. [2021-11-07 08:59:53,934 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 363 transitions. Word has length 119 [2021-11-07 08:59:53,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:59:53,934 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 363 transitions. [2021-11-07 08:59:53,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.933333333333334) internal successors, (119), 14 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:53,935 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 363 transitions. [2021-11-07 08:59:53,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-07 08:59:53,935 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:59:53,935 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, 1, 1, 1, 1] [2021-11-07 08:59:53,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-11-07 08:59:53,936 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 08:59:53,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:59:53,936 INFO L85 PathProgramCache]: Analyzing trace with hash 224555543, now seen corresponding path program 1 times [2021-11-07 08:59:53,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:59:53,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179593132] [2021-11-07 08:59:53,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:59:53,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:59:54,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:59:54,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:59:54,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:59:54,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179593132] [2021-11-07 08:59:54,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179593132] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:59:54,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:59:54,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-07 08:59:54,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030307435] [2021-11-07 08:59:54,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:59:54,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 08:59:54,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:59:54,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 08:59:54,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-07 08:59:54,698 INFO L87 Difference]: Start difference. First operand 349 states and 363 transitions. Second operand has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 12 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:59:56,741 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 08:59:58,857 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:00,995 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:03,081 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:05,236 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:07,449 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:10,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:00:10,706 INFO L93 Difference]: Finished difference Result 421 states and 433 transitions. [2021-11-07 09:00:10,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-07 09:00:10,707 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 12 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-07 09:00:10,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:00:10,707 INFO L225 Difference]: With dead ends: 421 [2021-11-07 09:00:10,707 INFO L226 Difference]: Without dead ends: 349 [2021-11-07 09:00:10,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1486.25ms TimeCoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2021-11-07 09:00:10,708 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 995 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 77 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13858.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.83ms SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14752.97ms IncrementalHoareTripleChecker+Time [2021-11-07 09:00:10,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [995 Valid, 1052 Invalid, 659 Unknown, 0 Unchecked, 7.83ms Time], IncrementalHoareTripleChecker [77 Valid, 576 Invalid, 6 Unknown, 0 Unchecked, 14752.97ms Time] [2021-11-07 09:00:10,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-11-07 09:00:10,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 327. [2021-11-07 09:00:10,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 325 states have (on average 1.04) internal successors, (338), 326 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:10,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 338 transitions. [2021-11-07 09:00:10,738 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 338 transitions. Word has length 121 [2021-11-07 09:00:10,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:00:10,738 INFO L470 AbstractCegarLoop]: Abstraction has 327 states and 338 transitions. [2021-11-07 09:00:10,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 12 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:10,739 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 338 transitions. [2021-11-07 09:00:10,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-07 09:00:10,739 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:00:10,739 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:00:10,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-11-07 09:00:10,740 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 09:00:10,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:00:10,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1626989591, now seen corresponding path program 1 times [2021-11-07 09:00:10,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:00:10,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853080772] [2021-11-07 09:00:10,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:00:10,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:00:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:00:16,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:00:16,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:00:16,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853080772] [2021-11-07 09:00:16,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853080772] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:00:16,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:00:16,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-11-07 09:00:16,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914867532] [2021-11-07 09:00:16,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:00:16,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-07 09:00:16,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:00:16,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-07 09:00:16,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2021-11-07 09:00:16,928 INFO L87 Difference]: Start difference. First operand 327 states and 338 transitions. Second operand has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:18,978 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:21,132 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:23,258 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:25,392 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:27,516 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:29,618 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:31,748 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:33,866 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:35,968 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:38,080 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:00:40,218 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 [] [2021-11-07 09:00:50,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:00:50,431 INFO L93 Difference]: Finished difference Result 338 states and 347 transitions. [2021-11-07 09:00:50,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-07 09:00:50,432 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-07 09:00:50,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:00:50,432 INFO L225 Difference]: With dead ends: 338 [2021-11-07 09:00:50,432 INFO L226 Difference]: Without dead ends: 266 [2021-11-07 09:00:50,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1054 ImplicationChecksByTransitivity, 8214.84ms TimeCoverageRelationStatistics Valid=653, Invalid=3769, Unknown=0, NotChecked=0, Total=4422 [2021-11-07 09:00:50,433 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 1536 mSDsluCounter, 2125 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 220 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25712.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 2309 SdHoareTripleChecker+Invalid, 1701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.94ms SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27233.52ms IncrementalHoareTripleChecker+Time [2021-11-07 09:00:50,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1536 Valid, 2309 Invalid, 1701 Unknown, 0 Unchecked, 15.94ms Time], IncrementalHoareTripleChecker [220 Valid, 1470 Invalid, 11 Unknown, 0 Unchecked, 27233.52ms Time] [2021-11-07 09:00:50,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-11-07 09:00:50,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 264. [2021-11-07 09:00:50,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 262 states have (on average 1.0381679389312977) internal successors, (272), 263 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:50,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 272 transitions. [2021-11-07 09:00:50,453 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 272 transitions. Word has length 121 [2021-11-07 09:00:50,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:00:50,453 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 272 transitions. [2021-11-07 09:00:50,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:00:50,453 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 272 transitions. [2021-11-07 09:00:50,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-07 09:00:50,454 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:00:50,454 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, 1, 1, 1, 1, 1, 1] [2021-11-07 09:00:50,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-11-07 09:00:50,454 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 09:00:50,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:00:50,454 INFO L85 PathProgramCache]: Analyzing trace with hash 2027254843, now seen corresponding path program 1 times [2021-11-07 09:00:50,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:00:50,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608358652] [2021-11-07 09:00:50,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:00:50,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:00:56,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:00:58,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:00:58,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:00:58,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608358652] [2021-11-07 09:00:58,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608358652] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:00:58,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:00:58,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-07 09:00:58,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534910177] [2021-11-07 09:00:58,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:00:58,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-07 09:00:58,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:00:58,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-07 09:00:58,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-11-07 09:00:58,588 INFO L87 Difference]: Start difference. First operand 264 states and 272 transitions. Second operand has 20 states, 20 states have (on average 6.15) internal successors, (123), 20 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:01:00,650 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 [] [2021-11-07 09:01:02,786 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:04,879 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:06,999 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:09,109 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:11,267 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 [] [2021-11-07 09:01:14,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:01:14,116 INFO L93 Difference]: Finished difference Result 264 states and 272 transitions. [2021-11-07 09:01:14,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 09:01:14,117 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.15) internal successors, (123), 20 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2021-11-07 09:01:14,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:01:14,117 INFO L225 Difference]: With dead ends: 264 [2021-11-07 09:01:14,118 INFO L226 Difference]: Without dead ends: 262 [2021-11-07 09:01:14,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 3013.75ms TimeCoverageRelationStatistics Valid=197, Invalid=733, Unknown=0, NotChecked=0, Total=930 [2021-11-07 09:01:14,118 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 660 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 37 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12911.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.47ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13725.71ms IncrementalHoareTripleChecker+Time [2021-11-07 09:01:14,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [660 Valid, 1020 Invalid, 386 Unknown, 0 Unchecked, 4.47ms Time], IncrementalHoareTripleChecker [37 Valid, 343 Invalid, 6 Unknown, 0 Unchecked, 13725.71ms Time] [2021-11-07 09:01:14,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-11-07 09:01:14,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2021-11-07 09:01:14,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 1.0306513409961686) internal successors, (269), 261 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:01:14,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 269 transitions. [2021-11-07 09:01:14,137 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 269 transitions. Word has length 123 [2021-11-07 09:01:14,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:01:14,138 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 269 transitions. [2021-11-07 09:01:14,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.15) internal successors, (123), 20 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:01:14,138 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 269 transitions. [2021-11-07 09:01:14,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-07 09:01:14,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:01:14,139 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:01:14,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-11-07 09:01:14,139 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 09:01:14,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:01:14,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1760719075, now seen corresponding path program 1 times [2021-11-07 09:01:14,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:01:14,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158225720] [2021-11-07 09:01:14,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:01:14,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:01:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:01:19,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:01:19,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:01:19,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158225720] [2021-11-07 09:01:19,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158225720] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:01:19,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:01:19,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-07 09:01:19,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512661179] [2021-11-07 09:01:19,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:01:19,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 09:01:19,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:01:19,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 09:01:19,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-11-07 09:01:19,449 INFO L87 Difference]: Start difference. First operand 262 states and 269 transitions. Second operand has 15 states, 15 states have (on average 9.266666666666667) internal successors, (139), 14 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:01:21,492 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:23,616 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:25,720 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:27,836 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:29,966 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:32,098 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:34,292 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:36,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 09:01:36,200 INFO L93 Difference]: Finished difference Result 271 states and 277 transitions. [2021-11-07 09:01:36,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 09:01:36,201 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.266666666666667) internal successors, (139), 14 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2021-11-07 09:01:36,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 09:01:36,201 INFO L225 Difference]: With dead ends: 271 [2021-11-07 09:01:36,201 INFO L226 Difference]: Without dead ends: 255 [2021-11-07 09:01:36,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1639.30ms TimeCoverageRelationStatistics Valid=170, Invalid=430, Unknown=0, NotChecked=0, Total=600 [2021-11-07 09:01:36,202 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 595 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 19 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14740.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.45ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15672.35ms IncrementalHoareTripleChecker+Time [2021-11-07 09:01:36,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [595 Valid, 581 Invalid, 264 Unknown, 0 Unchecked, 3.45ms Time], IncrementalHoareTripleChecker [19 Valid, 238 Invalid, 7 Unknown, 0 Unchecked, 15672.35ms Time] [2021-11-07 09:01:36,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-11-07 09:01:36,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2021-11-07 09:01:36,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.0196850393700787) internal successors, (259), 254 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:01:36,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 259 transitions. [2021-11-07 09:01:36,224 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 259 transitions. Word has length 139 [2021-11-07 09:01:36,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 09:01:36,224 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 259 transitions. [2021-11-07 09:01:36,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.266666666666667) internal successors, (139), 14 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:01:36,224 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 259 transitions. [2021-11-07 09:01:36,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-07 09:01:36,225 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 09:01:36,225 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 09:01:36,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-11-07 09:01:36,225 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 09:01:36,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 09:01:36,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1101238039, now seen corresponding path program 1 times [2021-11-07 09:01:36,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 09:01:36,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700483671] [2021-11-07 09:01:36,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 09:01:36,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 09:01:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 09:01:37,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 09:01:37,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 09:01:37,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700483671] [2021-11-07 09:01:37,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700483671] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 09:01:37,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 09:01:37,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-07 09:01:37,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587072524] [2021-11-07 09:01:37,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 09:01:37,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 09:01:37,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 09:01:37,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 09:01:37,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-07 09:01:37,669 INFO L87 Difference]: Start difference. First operand 255 states and 259 transitions. Second operand has 13 states, 13 states have (on average 10.692307692307692) internal successors, (139), 13 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 09:01:39,718 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:41,825 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:43,971 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 09:01:46,077 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15