./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b 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_linked_list_push_back_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 d155cc00d5c2ba6f5ef1d5e883c6d133605de01ed97e4300960f893025d81fd1 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-03 23:24:00,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 23:24:00,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 23:24:00,457 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 23:24:00,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 23:24:00,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 23:24:00,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 23:24:00,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 23:24:00,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 23:24:00,469 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 23:24:00,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 23:24:00,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 23:24:00,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 23:24:00,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 23:24:00,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 23:24:00,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 23:24:00,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 23:24:00,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 23:24:00,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 23:24:00,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 23:24:00,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 23:24:00,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 23:24:00,488 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 23:24:00,489 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 23:24:00,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 23:24:00,492 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 23:24:00,492 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 23:24:00,493 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 23:24:00,494 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 23:24:00,494 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 23:24:00,494 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 23:24:00,495 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 23:24:00,496 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 23:24:00,497 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 23:24:00,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 23:24:00,498 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 23:24:00,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 23:24:00,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 23:24:00,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 23:24:00,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 23:24:00,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 23:24:00,500 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-03 23:24:00,525 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 23:24:00,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 23:24:00,526 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 23:24:00,526 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 23:24:00,527 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 23:24:00,527 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 23:24:00,527 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 23:24:00,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 23:24:00,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 23:24:00,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 23:24:00,529 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 23:24:00,529 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 23:24:00,529 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 23:24:00,529 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 23:24:00,529 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 23:24:00,530 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 23:24:00,530 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 23:24:00,530 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 23:24:00,530 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 23:24:00,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 23:24:00,530 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 23:24:00,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 23:24:00,531 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 23:24:00,531 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-03 23:24:00,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 23:24:00,531 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 23:24:00,531 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 23:24:00,531 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 23:24:00,532 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 23:24:00,532 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d155cc00d5c2ba6f5ef1d5e883c6d133605de01ed97e4300960f893025d81fd1 [2021-11-03 23:24:00,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 23:24:00,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 23:24:00,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 23:24:00,754 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 23:24:00,755 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 23:24:00,756 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i [2021-11-03 23:24:00,797 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/625db209d/2f761fbd465a4e97ac8c984b23507fc4/FLAGecb527812 [2021-11-03 23:24:01,355 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 23:24:01,355 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i [2021-11-03 23:24:01,386 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/625db209d/2f761fbd465a4e97ac8c984b23507fc4/FLAGecb527812 [2021-11-03 23:24:01,827 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/625db209d/2f761fbd465a4e97ac8c984b23507fc4 [2021-11-03 23:24:01,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 23:24:01,830 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 23:24:01,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 23:24:01,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 23:24:01,846 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 23:24:01,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 11:24:01" (1/1) ... [2021-11-03 23:24:01,847 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7880901 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:24:01, skipping insertion in model container [2021-11-03 23:24:01,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 11:24:01" (1/1) ... [2021-11-03 23:24:01,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 23:24:01,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 23:24:02,045 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_linked_list_push_back_harness.i[4499,4512] [2021-11-03 23:24:02,049 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_linked_list_push_back_harness.i[4559,4572] [2021-11-03 23:24:02,062 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 23:24:02,068 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 23:24:02,472 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:24:02,473 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:24:02,473 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:24:02,474 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:24:02,475 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:24:02,481 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:24:02,482 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:24:02,483 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:24:02,483 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:24:02,484 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:24:02,485 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:24:02,485 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:24:02,486 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:24:02,645 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 23:24:02,647 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 23:24:02,649 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 23:24:02,650 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 23:24:02,651 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 23:24:02,651 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 23:24:02,651 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 23:24:02,652 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 23:24:02,652 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 23:24:02,653 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 23:24:02,723 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 23:24:02,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 23:24:02,750 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 23:24:02,768 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_linked_list_push_back_harness.i[4499,4512] [2021-11-03 23:24:02,769 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_linked_list_push_back_harness.i[4559,4572] [2021-11-03 23:24:02,770 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 23:24:02,771 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 23:24:02,826 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:24:02,829 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:24:02,830 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:24:02,832 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:24:02,833 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:24:02,836 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:24:02,839 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:24:02,840 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:24:02,841 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:24:02,843 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:24:02,844 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:24:02,844 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:24:02,845 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:24:02,872 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 23:24:02,873 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 23:24:02,873 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 23:24:02,874 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 23:24:02,877 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 23:24:02,878 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 23:24:02,878 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 23:24:02,879 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 23:24:02,879 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 23:24:02,879 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 23:24:02,900 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 23:24:02,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 23:24:03,099 INFO L208 MainTranslator]: Completed translation [2021-11-03 23:24:03,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:24:03 WrapperNode [2021-11-03 23:24:03,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 23:24:03,100 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 23:24:03,100 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 23:24:03,101 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 23:24:03,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:24:03" (1/1) ... [2021-11-03 23:24:03,165 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:24:03" (1/1) ... [2021-11-03 23:24:03,197 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 23:24:03,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 23:24:03,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 23:24:03,198 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 23:24:03,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:24:03" (1/1) ... [2021-11-03 23:24:03,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:24:03" (1/1) ... [2021-11-03 23:24:03,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:24:03" (1/1) ... [2021-11-03 23:24:03,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:24:03" (1/1) ... [2021-11-03 23:24:03,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:24:03" (1/1) ... [2021-11-03 23:24:03,236 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:24:03" (1/1) ... [2021-11-03 23:24:03,238 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:24:03" (1/1) ... [2021-11-03 23:24:03,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 23:24:03,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 23:24:03,243 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 23:24:03,243 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 23:24:03,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:24:03" (1/1) ... [2021-11-03 23:24:03,258 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 23:24:03,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:24:03,277 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) [2021-11-03 23:24:03,296 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 [2021-11-03 23:24:03,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 23:24:03,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 23:24:03,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 23:24:03,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 23:24:03,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 23:24:03,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 23:24:03,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 23:24:03,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 23:24:03,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 23:24:03,672 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 23:24:03,672 INFO L299 CfgBuilder]: Removed 80 assume(true) statements. [2021-11-03 23:24:03,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 11:24:03 BoogieIcfgContainer [2021-11-03 23:24:03,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 23:24:03,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 23:24:03,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 23:24:03,680 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 23:24:03,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 11:24:01" (1/3) ... [2021-11-03 23:24:03,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f5f3fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 11:24:03, skipping insertion in model container [2021-11-03 23:24:03,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:24:03" (2/3) ... [2021-11-03 23:24:03,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f5f3fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 11:24:03, skipping insertion in model container [2021-11-03 23:24:03,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 11:24:03" (3/3) ... [2021-11-03 23:24:03,683 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_push_back_harness.i [2021-11-03 23:24:03,689 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 23:24:03,692 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-03 23:24:03,731 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 23:24:03,736 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 [2021-11-03 23:24:03,736 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-03 23:24:03,748 INFO L276 IsEmpty]: Start isEmpty. Operand has 157 states, 145 states have (on average 1.5310344827586206) internal successors, (222), 156 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:03,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-03 23:24:03,752 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:24:03,752 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:24:03,753 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 23:24:03,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:24:03,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1015878758, now seen corresponding path program 1 times [2021-11-03 23:24:03,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:24:03,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596305632] [2021-11-03 23:24:03,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:24:03,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:24:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:24:03,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:24:03,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:24:03,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596305632] [2021-11-03 23:24:03,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596305632] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:24:03,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:24:03,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 23:24:03,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660357167] [2021-11-03 23:24:03,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:24:03,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 23:24:03,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:24:03,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 23:24:03,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 23:24:03,970 INFO L87 Difference]: Start difference. First operand has 157 states, 145 states have (on average 1.5310344827586206) internal successors, (222), 156 states have internal predecessors, (222), 0 states have call successors, (0), 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 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:04,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:24:04,261 INFO L93 Difference]: Finished difference Result 310 states and 439 transitions. [2021-11-03 23:24:04,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 23:24:04,263 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-03 23:24:04,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:24:04,270 INFO L225 Difference]: With dead ends: 310 [2021-11-03 23:24:04,270 INFO L226 Difference]: Without dead ends: 152 [2021-11-03 23:24:04,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 23:24:04,284 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 186.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.11ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 264.16ms IncrementalHoareTripleChecker+Time [2021-11-03 23:24:04,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 202 Unknown, 0 Unchecked, 1.11ms Time], IncrementalHoareTripleChecker [0 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 264.16ms Time] [2021-11-03 23:24:04,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-03 23:24:04,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-11-03 23:24:04,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 141 states have (on average 1.3971631205673758) internal successors, (197), 151 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:04,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 197 transitions. [2021-11-03 23:24:04,313 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 197 transitions. Word has length 37 [2021-11-03 23:24:04,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:24:04,313 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 197 transitions. [2021-11-03 23:24:04,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:04,314 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 197 transitions. [2021-11-03 23:24:04,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-03 23:24:04,314 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:24:04,315 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:24:04,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 23:24:04,315 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 23:24:04,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:24:04,316 INFO L85 PathProgramCache]: Analyzing trace with hash 422083482, now seen corresponding path program 1 times [2021-11-03 23:24:04,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:24:04,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665515758] [2021-11-03 23:24:04,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:24:04,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:24:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:24:04,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:24:04,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:24:04,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665515758] [2021-11-03 23:24:04,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665515758] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:24:04,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:24:04,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:24:04,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948567845] [2021-11-03 23:24:04,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:24:04,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:24:04,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:24:04,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:24:04,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:24:04,454 INFO L87 Difference]: Start difference. First operand 152 states and 197 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:04,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:24:04,853 INFO L93 Difference]: Finished difference Result 328 states and 436 transitions. [2021-11-03 23:24:04,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 23:24:04,854 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-03 23:24:04,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:24:04,859 INFO L225 Difference]: With dead ends: 328 [2021-11-03 23:24:04,859 INFO L226 Difference]: Without dead ends: 188 [2021-11-03 23:24:04,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.72ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:24:04,862 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 49 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 278.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.53ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 350.85ms IncrementalHoareTripleChecker+Time [2021-11-03 23:24:04,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 0 Invalid, 664 Unknown, 0 Unchecked, 8.53ms Time], IncrementalHoareTripleChecker [9 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 350.85ms Time] [2021-11-03 23:24:04,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-11-03 23:24:04,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 158. [2021-11-03 23:24:04,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 147 states have (on average 1.380952380952381) internal successors, (203), 157 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:04,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 203 transitions. [2021-11-03 23:24:04,882 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 203 transitions. Word has length 37 [2021-11-03 23:24:04,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:24:04,882 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 203 transitions. [2021-11-03 23:24:04,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:04,882 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 203 transitions. [2021-11-03 23:24:04,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-03 23:24:04,883 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:24:04,885 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:24:04,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 23:24:04,886 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 23:24:04,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:24:04,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1949655780, now seen corresponding path program 1 times [2021-11-03 23:24:04,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:24:04,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287175086] [2021-11-03 23:24:04,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:24:04,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:24:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:24:04,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:24:04,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:24:04,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287175086] [2021-11-03 23:24:04,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287175086] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:24:04,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:24:04,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:24:04,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736562120] [2021-11-03 23:24:04,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:24:04,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:24:04,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:24:04,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:24:04,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:24:04,960 INFO L87 Difference]: Start difference. First operand 158 states and 203 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:05,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:24:05,294 INFO L93 Difference]: Finished difference Result 324 states and 425 transitions. [2021-11-03 23:24:05,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 23:24:05,295 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-03 23:24:05,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:24:05,296 INFO L225 Difference]: With dead ends: 324 [2021-11-03 23:24:05,296 INFO L226 Difference]: Without dead ends: 182 [2021-11-03 23:24:05,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.52ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:24:05,297 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 28 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 257.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.75ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 317.21ms IncrementalHoareTripleChecker+Time [2021-11-03 23:24:05,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 0 Invalid, 631 Unknown, 0 Unchecked, 1.75ms Time], IncrementalHoareTripleChecker [9 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 317.21ms Time] [2021-11-03 23:24:05,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-03 23:24:05,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 164. [2021-11-03 23:24:05,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 153 states have (on average 1.3660130718954249) internal successors, (209), 163 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:05,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 209 transitions. [2021-11-03 23:24:05,307 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 209 transitions. Word has length 37 [2021-11-03 23:24:05,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:24:05,308 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 209 transitions. [2021-11-03 23:24:05,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:05,310 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 209 transitions. [2021-11-03 23:24:05,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-03 23:24:05,321 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:24:05,321 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:24:05,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 23:24:05,322 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 23:24:05,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:24:05,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1809107170, now seen corresponding path program 1 times [2021-11-03 23:24:05,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:24:05,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452136307] [2021-11-03 23:24:05,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:24:05,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:24:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:24:05,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:24:05,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:24:05,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452136307] [2021-11-03 23:24:05,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452136307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:24:05,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:24:05,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:24:05,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564605457] [2021-11-03 23:24:05,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:24:05,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:24:05,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:24:05,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:24:05,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:24:05,373 INFO L87 Difference]: Start difference. First operand 164 states and 209 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:05,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:24:05,595 INFO L93 Difference]: Finished difference Result 310 states and 396 transitions. [2021-11-03 23:24:05,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 23:24:05,596 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-03 23:24:05,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:24:05,597 INFO L225 Difference]: With dead ends: 310 [2021-11-03 23:24:05,597 INFO L226 Difference]: Without dead ends: 160 [2021-11-03 23:24:05,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.97ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:24:05,597 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 186 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 163.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.42ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 205.98ms IncrementalHoareTripleChecker+Time [2021-11-03 23:24:05,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 0 Invalid, 393 Unknown, 0 Unchecked, 1.42ms Time], IncrementalHoareTripleChecker [4 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 205.98ms Time] [2021-11-03 23:24:05,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-03 23:24:05,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-11-03 23:24:05,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 149 states have (on average 1.3624161073825503) internal successors, (203), 159 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:05,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 203 transitions. [2021-11-03 23:24:05,603 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 203 transitions. Word has length 37 [2021-11-03 23:24:05,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:24:05,608 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 203 transitions. [2021-11-03 23:24:05,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:05,609 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 203 transitions. [2021-11-03 23:24:05,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-03 23:24:05,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:24:05,613 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:24:05,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 23:24:05,614 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 23:24:05,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:24:05,616 INFO L85 PathProgramCache]: Analyzing trace with hash -964119912, now seen corresponding path program 1 times [2021-11-03 23:24:05,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:24:05,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895520300] [2021-11-03 23:24:05,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:24:05,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:24:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:24:05,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:24:05,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:24:05,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895520300] [2021-11-03 23:24:05,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895520300] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:24:05,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:24:05,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:24:05,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592996445] [2021-11-03 23:24:05,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:24:05,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:24:05,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:24:05,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:24:05,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:24:05,697 INFO L87 Difference]: Start difference. First operand 160 states and 203 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:05,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:24:05,996 INFO L93 Difference]: Finished difference Result 330 states and 408 transitions. [2021-11-03 23:24:05,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 23:24:05,997 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-03 23:24:05,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:24:05,998 INFO L225 Difference]: With dead ends: 330 [2021-11-03 23:24:05,998 INFO L226 Difference]: Without dead ends: 200 [2021-11-03 23:24:05,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.27ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:24:05,999 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 43 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 228.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.51ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 279.85ms IncrementalHoareTripleChecker+Time [2021-11-03 23:24:05,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 0 Invalid, 584 Unknown, 0 Unchecked, 1.51ms Time], IncrementalHoareTripleChecker [2 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 279.85ms Time] [2021-11-03 23:24:05,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-11-03 23:24:06,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 160. [2021-11-03 23:24:06,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 149 states have (on average 1.3557046979865772) internal successors, (202), 159 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:06,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 202 transitions. [2021-11-03 23:24:06,005 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 202 transitions. Word has length 37 [2021-11-03 23:24:06,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:24:06,006 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 202 transitions. [2021-11-03 23:24:06,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:06,006 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 202 transitions. [2021-11-03 23:24:06,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-03 23:24:06,006 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:24:06,006 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:24:06,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 23:24:06,007 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 23:24:06,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:24:06,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1303112067, now seen corresponding path program 1 times [2021-11-03 23:24:06,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:24:06,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866638604] [2021-11-03 23:24:06,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:24:06,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:24:06,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:24:06,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:24:06,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:24:06,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866638604] [2021-11-03 23:24:06,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866638604] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:24:06,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:24:06,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 23:24:06,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254088492] [2021-11-03 23:24:06,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:24:06,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 23:24:06,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:24:06,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 23:24:06,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 23:24:06,128 INFO L87 Difference]: Start difference. First operand 160 states and 202 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:06,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:24:06,434 INFO L93 Difference]: Finished difference Result 346 states and 429 transitions. [2021-11-03 23:24:06,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 23:24:06,435 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-03 23:24:06,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:24:06,436 INFO L225 Difference]: With dead ends: 346 [2021-11-03 23:24:06,436 INFO L226 Difference]: Without dead ends: 215 [2021-11-03 23:24:06,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 43.89ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-03 23:24:06,437 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 576 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 192.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.42ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 244.61ms IncrementalHoareTripleChecker+Time [2021-11-03 23:24:06,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [576 Valid, 0 Invalid, 420 Unknown, 0 Unchecked, 3.42ms Time], IncrementalHoareTripleChecker [15 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 244.61ms Time] [2021-11-03 23:24:06,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-11-03 23:24:06,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 160. [2021-11-03 23:24:06,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 149 states have (on average 1.342281879194631) internal successors, (200), 159 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:06,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 200 transitions. [2021-11-03 23:24:06,444 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 200 transitions. Word has length 39 [2021-11-03 23:24:06,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:24:06,445 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 200 transitions. [2021-11-03 23:24:06,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:06,445 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 200 transitions. [2021-11-03 23:24:06,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-03 23:24:06,445 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:24:06,446 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] [2021-11-03 23:24:06,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 23:24:06,446 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 23:24:06,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:24:06,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1958868289, now seen corresponding path program 1 times [2021-11-03 23:24:06,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:24:06,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740524898] [2021-11-03 23:24:06,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:24:06,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:24:06,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:24:06,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:24:06,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:24:06,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740524898] [2021-11-03 23:24:06,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740524898] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:24:06,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:24:06,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 23:24:06,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795896666] [2021-11-03 23:24:06,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:24:06,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 23:24:06,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:24:06,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 23:24:06,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-03 23:24:06,529 INFO L87 Difference]: Start difference. First operand 160 states and 200 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:07,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:24:07,015 INFO L93 Difference]: Finished difference Result 480 states and 592 transitions. [2021-11-03 23:24:07,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 23:24:07,016 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-03 23:24:07,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:24:07,017 INFO L225 Difference]: With dead ends: 480 [2021-11-03 23:24:07,017 INFO L226 Difference]: Without dead ends: 348 [2021-11-03 23:24:07,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 55.73ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-11-03 23:24:07,018 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1045 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 337.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.07ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 412.32ms IncrementalHoareTripleChecker+Time [2021-11-03 23:24:07,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1045 Valid, 0 Invalid, 683 Unknown, 0 Unchecked, 4.07ms Time], IncrementalHoareTripleChecker [27 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 412.32ms Time] [2021-11-03 23:24:07,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-11-03 23:24:07,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 162. [2021-11-03 23:24:07,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 151 states have (on average 1.3377483443708609) internal successors, (202), 161 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:07,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 202 transitions. [2021-11-03 23:24:07,027 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 202 transitions. Word has length 41 [2021-11-03 23:24:07,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:24:07,027 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 202 transitions. [2021-11-03 23:24:07,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:07,030 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 202 transitions. [2021-11-03 23:24:07,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-03 23:24:07,032 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:24:07,032 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] [2021-11-03 23:24:07,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-03 23:24:07,032 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 23:24:07,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:24:07,040 INFO L85 PathProgramCache]: Analyzing trace with hash -849015639, now seen corresponding path program 1 times [2021-11-03 23:24:07,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:24:07,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584871751] [2021-11-03 23:24:07,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:24:07,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:24:07,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:24:07,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:24:07,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:24:07,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584871751] [2021-11-03 23:24:07,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584871751] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:24:07,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:24:07,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 23:24:07,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203239366] [2021-11-03 23:24:07,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:24:07,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 23:24:07,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:24:07,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 23:24:07,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 23:24:07,099 INFO L87 Difference]: Start difference. First operand 162 states and 202 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 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) [2021-11-03 23:24:07,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:24:07,478 INFO L93 Difference]: Finished difference Result 472 states and 578 transitions. [2021-11-03 23:24:07,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 23:24:07,478 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 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 [2021-11-03 23:24:07,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:24:07,479 INFO L225 Difference]: With dead ends: 472 [2021-11-03 23:24:07,480 INFO L226 Difference]: Without dead ends: 339 [2021-11-03 23:24:07,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 29.92ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-03 23:24:07,480 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1124 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 274.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.26ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 334.99ms IncrementalHoareTripleChecker+Time [2021-11-03 23:24:07,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1124 Valid, 0 Invalid, 506 Unknown, 0 Unchecked, 3.26ms Time], IncrementalHoareTripleChecker [21 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 334.99ms Time] [2021-11-03 23:24:07,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-11-03 23:24:07,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 164. [2021-11-03 23:24:07,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 153 states have (on average 1.3333333333333333) internal successors, (204), 163 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:07,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 204 transitions. [2021-11-03 23:24:07,485 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 204 transitions. Word has length 42 [2021-11-03 23:24:07,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:24:07,486 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 204 transitions. [2021-11-03 23:24:07,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 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) [2021-11-03 23:24:07,486 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 204 transitions. [2021-11-03 23:24:07,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-03 23:24:07,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:24:07,486 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] [2021-11-03 23:24:07,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-03 23:24:07,487 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 23:24:07,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:24:07,487 INFO L85 PathProgramCache]: Analyzing trace with hash 524572173, now seen corresponding path program 1 times [2021-11-03 23:24:07,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:24:07,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707549342] [2021-11-03 23:24:07,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:24:07,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:24:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:24:07,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:24:07,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:24:07,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707549342] [2021-11-03 23:24:07,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707549342] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:24:07,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:24:07,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:24:07,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040953411] [2021-11-03 23:24:07,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:24:07,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:24:07,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:24:07,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:24:07,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:24:07,523 INFO L87 Difference]: Start difference. First operand 164 states and 204 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:07,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:24:07,788 INFO L93 Difference]: Finished difference Result 326 states and 407 transitions. [2021-11-03 23:24:07,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 23:24:07,788 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2021-11-03 23:24:07,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:24:07,790 INFO L225 Difference]: With dead ends: 326 [2021-11-03 23:24:07,790 INFO L226 Difference]: Without dead ends: 184 [2021-11-03 23:24:07,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.53ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:24:07,791 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 192.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.12ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 251.63ms IncrementalHoareTripleChecker+Time [2021-11-03 23:24:07,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 615 Unknown, 0 Unchecked, 1.12ms Time], IncrementalHoareTripleChecker [17 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 251.63ms Time] [2021-11-03 23:24:07,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-11-03 23:24:07,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 174. [2021-11-03 23:24:07,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 163 states have (on average 1.312883435582822) internal successors, (214), 173 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:07,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 214 transitions. [2021-11-03 23:24:07,796 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 214 transitions. Word has length 47 [2021-11-03 23:24:07,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:24:07,796 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 214 transitions. [2021-11-03 23:24:07,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:07,796 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 214 transitions. [2021-11-03 23:24:07,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-03 23:24:07,797 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:24:07,797 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] [2021-11-03 23:24:07,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-03 23:24:07,797 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 23:24:07,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:24:07,797 INFO L85 PathProgramCache]: Analyzing trace with hash 586611787, now seen corresponding path program 1 times [2021-11-03 23:24:07,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:24:07,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025919171] [2021-11-03 23:24:07,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:24:07,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:24:07,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:24:07,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:24:07,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:24:07,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025919171] [2021-11-03 23:24:07,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025919171] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:24:07,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:24:07,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 23:24:07,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959539473] [2021-11-03 23:24:07,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:24:07,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 23:24:07,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:24:07,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 23:24:07,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 23:24:07,895 INFO L87 Difference]: Start difference. First operand 174 states and 214 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:08,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:24:08,389 INFO L93 Difference]: Finished difference Result 516 states and 629 transitions. [2021-11-03 23:24:08,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 23:24:08,389 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2021-11-03 23:24:08,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:24:08,391 INFO L225 Difference]: With dead ends: 516 [2021-11-03 23:24:08,391 INFO L226 Difference]: Without dead ends: 364 [2021-11-03 23:24:08,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 74.71ms TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2021-11-03 23:24:08,392 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1110 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 333.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1110 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.53ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 409.77ms IncrementalHoareTripleChecker+Time [2021-11-03 23:24:08,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1110 Valid, 0 Invalid, 849 Unknown, 0 Unchecked, 3.53ms Time], IncrementalHoareTripleChecker [42 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 409.77ms Time] [2021-11-03 23:24:08,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2021-11-03 23:24:08,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 176. [2021-11-03 23:24:08,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 165 states have (on average 1.309090909090909) internal successors, (216), 175 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:08,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 216 transitions. [2021-11-03 23:24:08,397 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 216 transitions. Word has length 47 [2021-11-03 23:24:08,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:24:08,397 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 216 transitions. [2021-11-03 23:24:08,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:08,397 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 216 transitions. [2021-11-03 23:24:08,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-03 23:24:08,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:24:08,397 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] [2021-11-03 23:24:08,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-03 23:24:08,398 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 23:24:08,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:24:08,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1034045263, now seen corresponding path program 1 times [2021-11-03 23:24:08,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:24:08,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562955057] [2021-11-03 23:24:08,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:24:08,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:24:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:24:08,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:24:08,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:24:08,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562955057] [2021-11-03 23:24:08,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562955057] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:24:08,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:24:08,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 23:24:08,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852087381] [2021-11-03 23:24:08,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:24:08,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 23:24:08,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:24:08,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 23:24:08,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:24:08,447 INFO L87 Difference]: Start difference. First operand 176 states and 216 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:08,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:24:08,878 INFO L93 Difference]: Finished difference Result 414 states and 495 transitions. [2021-11-03 23:24:08,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 23:24:08,879 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2021-11-03 23:24:08,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:24:08,880 INFO L225 Difference]: With dead ends: 414 [2021-11-03 23:24:08,880 INFO L226 Difference]: Without dead ends: 272 [2021-11-03 23:24:08,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.02ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 23:24:08,881 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 101 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 309.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.84ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 405.12ms IncrementalHoareTripleChecker+Time [2021-11-03 23:24:08,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 0 Invalid, 892 Unknown, 0 Unchecked, 1.84ms Time], IncrementalHoareTripleChecker [7 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 405.12ms Time] [2021-11-03 23:24:08,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-11-03 23:24:08,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 176. [2021-11-03 23:24:08,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 165 states have (on average 1.303030303030303) internal successors, (215), 175 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:08,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 215 transitions. [2021-11-03 23:24:08,885 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 215 transitions. Word has length 47 [2021-11-03 23:24:08,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:24:08,886 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 215 transitions. [2021-11-03 23:24:08,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:08,886 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 215 transitions. [2021-11-03 23:24:08,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-03 23:24:08,886 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:24:08,886 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] [2021-11-03 23:24:08,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-03 23:24:08,887 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 23:24:08,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:24:08,887 INFO L85 PathProgramCache]: Analyzing trace with hash 2076397329, now seen corresponding path program 1 times [2021-11-03 23:24:08,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:24:08,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553360595] [2021-11-03 23:24:08,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:24:08,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:24:08,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:24:08,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:24:08,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:24:08,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553360595] [2021-11-03 23:24:08,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553360595] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 23:24:08,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871901135] [2021-11-03 23:24:08,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:24:08,985 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:24:08,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:24:08,986 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:24:09,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 23:24:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:24:09,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 53 conjunts are in the unsatisfiable core [2021-11-03 23:24:09,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:24:09,233 INFO L354 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2021-11-03 23:24:09,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 58 [2021-11-03 23:24:09,244 INFO L354 Elim1Store]: treesize reduction 47, result has 21.7 percent of original size [2021-11-03 23:24:09,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 54 [2021-11-03 23:24:10,442 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_ensure_linked_list_is_allocated_~list.offset Int)) (let ((.cse2 (+ ULTIMATE.start_ensure_linked_list_is_allocated_~list.offset 24))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_linked_list_push_back_harness_~#list~0.base|) .cse2)) (.cse1 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_aws_linked_list_push_back_harness_~#list~0.base|) .cse2))) (and (= (select (select |c_#memory_$Pointer$.base| .cse0) .cse1) |c_ULTIMATE.start_aws_linked_list_push_back_harness_~#list~0.base|) (or (and (= .cse2 .cse1) (= .cse0 |c_ULTIMATE.start_aws_linked_list_push_back_harness_~#list~0.base|)) (= (+ 16 ULTIMATE.start_ensure_linked_list_is_allocated_~list.offset) (select (select |c_#memory_$Pointer$.offset| .cse0) .cse1))))))) is different from true [2021-11-03 23:24:12,423 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 23:24:12,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 94 treesize of output 109 [2021-11-03 23:24:12,444 INFO L354 Elim1Store]: treesize reduction 14, result has 62.2 percent of original size [2021-11-03 23:24:12,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 103 treesize of output 92 [2021-11-03 23:24:12,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:24:12,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 23:24:13,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:24:13,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871901135] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-03 23:24:13,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-03 23:24:13,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 12] total 20 [2021-11-03 23:24:13,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650651734] [2021-11-03 23:24:13,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:24:13,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 23:24:13,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:24:13,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 23:24:13,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=291, Unknown=2, NotChecked=34, Total=380 [2021-11-03 23:24:13,812 INFO L87 Difference]: Start difference. First operand 176 states and 215 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:16,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:24:16,272 INFO L93 Difference]: Finished difference Result 547 states and 655 transitions. [2021-11-03 23:24:16,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 23:24:16,273 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-03 23:24:16,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:24:16,274 INFO L225 Difference]: With dead ends: 547 [2021-11-03 23:24:16,274 INFO L226 Difference]: Without dead ends: 404 [2021-11-03 23:24:16,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 5324.53ms TimeCoverageRelationStatistics Valid=112, Invalid=591, Unknown=3, NotChecked=50, Total=756 [2021-11-03 23:24:16,276 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 420 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 1568 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 676.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.96ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 812.95ms IncrementalHoareTripleChecker+Time [2021-11-03 23:24:16,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [420 Valid, 0 Invalid, 1611 Unknown, 0 Unchecked, 3.96ms Time], IncrementalHoareTripleChecker [43 Valid, 1568 Invalid, 0 Unknown, 0 Unchecked, 812.95ms Time] [2021-11-03 23:24:16,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2021-11-03 23:24:16,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 188. [2021-11-03 23:24:16,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 177 states have (on average 1.2937853107344632) internal successors, (229), 187 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:16,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 229 transitions. [2021-11-03 23:24:16,284 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 229 transitions. Word has length 49 [2021-11-03 23:24:16,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:24:16,285 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 229 transitions. [2021-11-03 23:24:16,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:16,285 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 229 transitions. [2021-11-03 23:24:16,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-03 23:24:16,288 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:24:16,288 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] [2021-11-03 23:24:16,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-03 23:24:16,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-03 23:24:16,500 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 23:24:16,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:24:16,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1566924239, now seen corresponding path program 1 times [2021-11-03 23:24:16,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:24:16,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021946849] [2021-11-03 23:24:16,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:24:16,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:24:16,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:24:16,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:24:16,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:24:16,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021946849] [2021-11-03 23:24:16,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021946849] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 23:24:16,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015324581] [2021-11-03 23:24:16,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:24:16,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:24:16,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:24:16,604 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:24:16,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 23:24:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:24:16,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 52 conjunts are in the unsatisfiable core [2021-11-03 23:24:16,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:24:16,761 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-03 23:24:16,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 50 [2021-11-03 23:24:16,776 INFO L354 Elim1Store]: treesize reduction 31, result has 50.0 percent of original size [2021-11-03 23:24:16,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 54 [2021-11-03 23:24:24,415 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 23:24:24,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 112 [2021-11-03 23:24:24,431 INFO L354 Elim1Store]: treesize reduction 14, result has 62.2 percent of original size [2021-11-03 23:24:24,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 98 [2021-11-03 23:24:26,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:24:26,873 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:24:26,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015324581] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:24:26,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-03 23:24:26,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [8] total 19 [2021-11-03 23:24:26,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101883767] [2021-11-03 23:24:26,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:24:26,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 23:24:26,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:24:26,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 23:24:26,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=292, Unknown=3, NotChecked=0, Total=342 [2021-11-03 23:24:26,875 INFO L87 Difference]: Start difference. First operand 188 states and 229 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:28,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:24:28,326 INFO L93 Difference]: Finished difference Result 363 states and 443 transitions. [2021-11-03 23:24:28,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 23:24:28,327 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-03 23:24:28,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:24:28,327 INFO L225 Difference]: With dead ends: 363 [2021-11-03 23:24:28,327 INFO L226 Difference]: Without dead ends: 198 [2021-11-03 23:24:28,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 10747.75ms TimeCoverageRelationStatistics Valid=55, Invalid=361, Unknown=4, NotChecked=0, Total=420 [2021-11-03 23:24:28,328 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 1248 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 218.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.71ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1083 IncrementalHoareTripleChecker+Unchecked, 275.12ms IncrementalHoareTripleChecker+Time [2021-11-03 23:24:28,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 1776 Unknown, 0 Unchecked, 2.71ms Time], IncrementalHoareTripleChecker [1 Valid, 692 Invalid, 0 Unknown, 1083 Unchecked, 275.12ms Time] [2021-11-03 23:24:28,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-11-03 23:24:28,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 197. [2021-11-03 23:24:28,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 186 states have (on average 1.2849462365591398) internal successors, (239), 196 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:28,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 239 transitions. [2021-11-03 23:24:28,333 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 239 transitions. Word has length 49 [2021-11-03 23:24:28,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:24:28,333 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 239 transitions. [2021-11-03 23:24:28,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:28,333 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 239 transitions. [2021-11-03 23:24:28,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-03 23:24:28,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:24:28,334 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] [2021-11-03 23:24:28,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 23:24:28,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-03 23:24:28,535 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 23:24:28,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:24:28,535 INFO L85 PathProgramCache]: Analyzing trace with hash 722918737, now seen corresponding path program 1 times [2021-11-03 23:24:28,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:24:28,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743447174] [2021-11-03 23:24:28,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:24:28,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:24:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:24:28,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 23:24:28,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:24:28,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743447174] [2021-11-03 23:24:28,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743447174] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:24:28,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:24:28,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 23:24:28,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405406963] [2021-11-03 23:24:28,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:24:28,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 23:24:28,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:24:28,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 23:24:28,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 23:24:28,568 INFO L87 Difference]: Start difference. First operand 197 states and 239 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:28,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:24:28,779 INFO L93 Difference]: Finished difference Result 369 states and 450 transitions. [2021-11-03 23:24:28,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 23:24:28,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-03 23:24:28,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:24:28,780 INFO L225 Difference]: With dead ends: 369 [2021-11-03 23:24:28,780 INFO L226 Difference]: Without dead ends: 199 [2021-11-03 23:24:28,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.33ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 23:24:28,781 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 162.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.67ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 201.16ms IncrementalHoareTripleChecker+Time [2021-11-03 23:24:28,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 387 Unknown, 0 Unchecked, 0.67ms Time], IncrementalHoareTripleChecker [4 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 201.16ms Time] [2021-11-03 23:24:28,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-11-03 23:24:28,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2021-11-03 23:24:28,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 188 states have (on average 1.2712765957446808) internal successors, (239), 198 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:28,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 239 transitions. [2021-11-03 23:24:28,787 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 239 transitions. Word has length 49 [2021-11-03 23:24:28,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:24:28,787 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 239 transitions. [2021-11-03 23:24:28,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:28,787 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 239 transitions. [2021-11-03 23:24:28,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-03 23:24:28,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:24:28,788 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:24:28,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-03 23:24:28,788 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 23:24:28,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:24:28,788 INFO L85 PathProgramCache]: Analyzing trace with hash -2068511535, now seen corresponding path program 1 times [2021-11-03 23:24:28,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:24:28,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930370253] [2021-11-03 23:24:28,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:24:28,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:24:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:24:28,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 23:24:28,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:24:28,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930370253] [2021-11-03 23:24:28,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930370253] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:24:28,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:24:28,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:24:28,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937660804] [2021-11-03 23:24:28,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:24:28,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:24:28,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:24:28,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:24:28,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:24:28,821 INFO L87 Difference]: Start difference. First operand 199 states and 239 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:29,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:24:29,119 INFO L93 Difference]: Finished difference Result 372 states and 451 transitions. [2021-11-03 23:24:29,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 23:24:29,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-03 23:24:29,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:24:29,120 INFO L225 Difference]: With dead ends: 372 [2021-11-03 23:24:29,120 INFO L226 Difference]: Without dead ends: 196 [2021-11-03 23:24:29,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.71ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:24:29,121 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 227.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.00ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 283.70ms IncrementalHoareTripleChecker+Time [2021-11-03 23:24:29,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 0 Invalid, 582 Unknown, 0 Unchecked, 1.00ms Time], IncrementalHoareTripleChecker [8 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 283.70ms Time] [2021-11-03 23:24:29,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-11-03 23:24:29,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 194. [2021-11-03 23:24:29,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 183 states have (on average 1.2677595628415301) internal successors, (232), 193 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:29,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 232 transitions. [2021-11-03 23:24:29,126 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 232 transitions. Word has length 49 [2021-11-03 23:24:29,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:24:29,126 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 232 transitions. [2021-11-03 23:24:29,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:29,126 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 232 transitions. [2021-11-03 23:24:29,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-03 23:24:29,126 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:24:29,126 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:24:29,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-03 23:24:29,126 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 23:24:29,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:24:29,127 INFO L85 PathProgramCache]: Analyzing trace with hash -309833065, now seen corresponding path program 1 times [2021-11-03 23:24:29,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:24:29,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075137726] [2021-11-03 23:24:29,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:24:29,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:24:29,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:24:29,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 23:24:29,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:24:29,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075137726] [2021-11-03 23:24:29,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075137726] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:24:29,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:24:29,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 23:24:29,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614479943] [2021-11-03 23:24:29,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:24:29,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 23:24:29,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:24:29,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 23:24:29,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-11-03 23:24:29,442 INFO L87 Difference]: Start difference. First operand 194 states and 232 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:30,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:24:30,516 INFO L93 Difference]: Finished difference Result 393 states and 471 transitions. [2021-11-03 23:24:30,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 23:24:30,516 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-03 23:24:30,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:24:30,517 INFO L225 Difference]: With dead ends: 393 [2021-11-03 23:24:30,517 INFO L226 Difference]: Without dead ends: 391 [2021-11-03 23:24:30,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 192.08ms TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2021-11-03 23:24:30,518 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 662 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 1879 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 732.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.23ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 917.38ms IncrementalHoareTripleChecker+Time [2021-11-03 23:24:30,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [662 Valid, 0 Invalid, 1886 Unknown, 0 Unchecked, 6.23ms Time], IncrementalHoareTripleChecker [7 Valid, 1879 Invalid, 0 Unknown, 0 Unchecked, 917.38ms Time] [2021-11-03 23:24:30,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-11-03 23:24:30,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 247. [2021-11-03 23:24:30,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 236 states have (on average 1.2457627118644068) internal successors, (294), 246 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:30,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 294 transitions. [2021-11-03 23:24:30,526 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 294 transitions. Word has length 50 [2021-11-03 23:24:30,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:24:30,526 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 294 transitions. [2021-11-03 23:24:30,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:30,526 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 294 transitions. [2021-11-03 23:24:30,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-03 23:24:30,526 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:24:30,526 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:24:30,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-03 23:24:30,527 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 23:24:30,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:24:30,527 INFO L85 PathProgramCache]: Analyzing trace with hash -307986023, now seen corresponding path program 1 times [2021-11-03 23:24:30,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:24:30,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017933670] [2021-11-03 23:24:30,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:24:30,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:24:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:24:30,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 23:24:30,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:24:30,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017933670] [2021-11-03 23:24:30,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017933670] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:24:30,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:24:30,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 23:24:30,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643718909] [2021-11-03 23:24:30,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:24:30,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 23:24:30,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:24:30,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 23:24:30,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-03 23:24:30,677 INFO L87 Difference]: Start difference. First operand 247 states and 294 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:31,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:24:31,098 INFO L93 Difference]: Finished difference Result 416 states and 500 transitions. [2021-11-03 23:24:31,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 23:24:31,099 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-03 23:24:31,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:24:31,100 INFO L225 Difference]: With dead ends: 416 [2021-11-03 23:24:31,100 INFO L226 Difference]: Without dead ends: 253 [2021-11-03 23:24:31,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 79.54ms TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-11-03 23:24:31,100 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 494 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 280.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.96ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 341.67ms IncrementalHoareTripleChecker+Time [2021-11-03 23:24:31,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [494 Valid, 0 Invalid, 810 Unknown, 0 Unchecked, 1.96ms Time], IncrementalHoareTripleChecker [29 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 341.67ms Time] [2021-11-03 23:24:31,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-11-03 23:24:31,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 251. [2021-11-03 23:24:31,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 240 states have (on average 1.225) internal successors, (294), 250 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:31,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 294 transitions. [2021-11-03 23:24:31,111 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 294 transitions. Word has length 50 [2021-11-03 23:24:31,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:24:31,111 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 294 transitions. [2021-11-03 23:24:31,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:31,111 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 294 transitions. [2021-11-03 23:24:31,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-03 23:24:31,113 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:24:31,114 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:24:31,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-03 23:24:31,114 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 23:24:31,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:24:31,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1467021339, now seen corresponding path program 1 times [2021-11-03 23:24:31,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:24:31,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253563512] [2021-11-03 23:24:31,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:24:31,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:24:31,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:24:31,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 23:24:31,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:24:31,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253563512] [2021-11-03 23:24:31,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253563512] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:24:31,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:24:31,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 23:24:31,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076436700] [2021-11-03 23:24:31,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:24:31,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 23:24:31,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:24:31,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 23:24:31,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-03 23:24:31,197 INFO L87 Difference]: Start difference. First operand 251 states and 294 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:31,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:24:31,462 INFO L93 Difference]: Finished difference Result 392 states and 462 transitions. [2021-11-03 23:24:31,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 23:24:31,462 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-03 23:24:31,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:24:31,463 INFO L225 Difference]: With dead ends: 392 [2021-11-03 23:24:31,463 INFO L226 Difference]: Without dead ends: 247 [2021-11-03 23:24:31,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 31.62ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-03 23:24:31,464 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 479 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 175.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.91ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 229.91ms IncrementalHoareTripleChecker+Time [2021-11-03 23:24:31,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [479 Valid, 0 Invalid, 429 Unknown, 0 Unchecked, 0.91ms Time], IncrementalHoareTripleChecker [8 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 229.91ms Time] [2021-11-03 23:24:31,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-11-03 23:24:31,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2021-11-03 23:24:31,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 236 states have (on average 1.2118644067796611) internal successors, (286), 246 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:31,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 286 transitions. [2021-11-03 23:24:31,472 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 286 transitions. Word has length 50 [2021-11-03 23:24:31,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:24:31,472 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 286 transitions. [2021-11-03 23:24:31,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:31,472 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 286 transitions. [2021-11-03 23:24:31,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-03 23:24:31,473 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:24:31,473 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:24:31,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-03 23:24:31,473 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 23:24:31,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:24:31,473 INFO L85 PathProgramCache]: Analyzing trace with hash -340564939, now seen corresponding path program 1 times [2021-11-03 23:24:31,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:24:31,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926560165] [2021-11-03 23:24:31,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:24:31,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:24:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:24:31,644 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:24:31,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:24:31,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926560165] [2021-11-03 23:24:31,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926560165] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 23:24:31,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694051461] [2021-11-03 23:24:31,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:24:31,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:24:31,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:24:31,646 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:24:31,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 23:24:31,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:24:31,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 64 conjunts are in the unsatisfiable core [2021-11-03 23:24:31,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:24:31,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:24:31,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-03 23:24:31,922 INFO L354 Elim1Store]: treesize reduction 122, result has 16.4 percent of original size [2021-11-03 23:24:31,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 70 treesize of output 42 [2021-11-03 23:24:34,337 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-11-03 23:24:34,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 18 [2021-11-03 23:24:34,380 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:24:34,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 23:24:34,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12246 treesize of output 12118 [2021-11-03 23:24:35,668 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:24:35,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694051461] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 23:24:35,668 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 23:24:35,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 22 [2021-11-03 23:24:35,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801183136] [2021-11-03 23:24:35,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-03 23:24:35,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-03 23:24:35,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:24:35,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-03 23:24:35,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2021-11-03 23:24:35,670 INFO L87 Difference]: Start difference. First operand 247 states and 286 transitions. Second operand has 22 states, 22 states have (on average 4.045454545454546) internal successors, (89), 22 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:36,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:24:36,625 INFO L93 Difference]: Finished difference Result 571 states and 669 transitions. [2021-11-03 23:24:36,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 23:24:36,626 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.045454545454546) internal successors, (89), 22 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-03 23:24:36,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:24:36,633 INFO L225 Difference]: With dead ends: 571 [2021-11-03 23:24:36,634 INFO L226 Difference]: Without dead ends: 414 [2021-11-03 23:24:36,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 2338.53ms TimeCoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2021-11-03 23:24:36,635 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 531 mSDsluCounter, 1654 mSDsCounter, 0 mSdLazyCounter, 1887 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 716.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.55ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 391 IncrementalHoareTripleChecker+Unchecked, 899.69ms IncrementalHoareTripleChecker+Time [2021-11-03 23:24:36,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 0 Invalid, 2280 Unknown, 0 Unchecked, 4.55ms Time], IncrementalHoareTripleChecker [2 Valid, 1887 Invalid, 0 Unknown, 391 Unchecked, 899.69ms Time] [2021-11-03 23:24:36,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2021-11-03 23:24:36,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 270. [2021-11-03 23:24:36,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 259 states have (on average 1.196911196911197) internal successors, (310), 269 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:36,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 310 transitions. [2021-11-03 23:24:36,644 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 310 transitions. Word has length 52 [2021-11-03 23:24:36,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:24:36,644 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 310 transitions. [2021-11-03 23:24:36,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.045454545454546) internal successors, (89), 22 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:36,644 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 310 transitions. [2021-11-03 23:24:36,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-03 23:24:36,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:24:36,645 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:24:36,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-03 23:24:36,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:24:36,860 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 23:24:36,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:24:36,860 INFO L85 PathProgramCache]: Analyzing trace with hash 190875219, now seen corresponding path program 2 times [2021-11-03 23:24:36,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:24:36,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307780568] [2021-11-03 23:24:36,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:24:36,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:24:36,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:24:37,096 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:24:37,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:24:37,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307780568] [2021-11-03 23:24:37,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307780568] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 23:24:37,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176285906] [2021-11-03 23:24:37,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 23:24:37,096 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:24:37,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:24:37,099 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:24:37,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-03 23:24:37,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 23:24:37,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 23:24:37,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 89 conjunts are in the unsatisfiable core [2021-11-03 23:24:37,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:24:37,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-03 23:24:37,455 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-03 23:24:37,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 22 [2021-11-03 23:24:38,255 INFO L354 Elim1Store]: treesize reduction 1422, result has 8.8 percent of original size [2021-11-03 23:24:38,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 6793 treesize of output 3720 [2021-11-03 23:24:39,158 INFO L354 Elim1Store]: treesize reduction 3564, result has 11.5 percent of original size [2021-11-03 23:24:39,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 8 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 11 new quantified variables, introduced 29 case distinctions, treesize of input 28131 treesize of output 8794 [2021-11-03 23:24:41,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:24:41,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:24:41,827 INFO L354 Elim1Store]: treesize reduction 39, result has 2.5 percent of original size [2021-11-03 23:24:41,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 21 [2021-11-03 23:24:41,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:24:41,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:24:41,950 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 23:24:41,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 646 treesize of output 506 [2021-11-03 23:24:42,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:24:42,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:24:42,282 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 23:24:42,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 21 [2021-11-03 23:24:42,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:24:42,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:24:42,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:24:42,473 INFO L354 Elim1Store]: treesize reduction 3, result has 88.5 percent of original size [2021-11-03 23:24:42,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 90 treesize of output 47 [2021-11-03 23:24:42,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:24:42,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 21 [2021-11-03 23:24:42,800 INFO L354 Elim1Store]: treesize reduction 89, result has 19.8 percent of original size [2021-11-03 23:24:42,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 2320 treesize of output 1900 [2021-11-03 23:24:43,621 INFO L354 Elim1Store]: treesize reduction 120, result has 17.2 percent of original size [2021-11-03 23:24:43,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 1026 treesize of output 774 [2021-11-03 23:24:43,662 INFO L354 Elim1Store]: treesize reduction 128, result has 16.3 percent of original size [2021-11-03 23:24:43,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 1000 treesize of output 759 [2021-11-03 23:24:43,698 INFO L354 Elim1Store]: treesize reduction 132, result has 13.7 percent of original size [2021-11-03 23:24:43,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 974 treesize of output 727 [2021-11-03 23:24:43,738 INFO L354 Elim1Store]: treesize reduction 172, result has 23.6 percent of original size [2021-11-03 23:24:43,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 930 treesize of output 930 [2021-11-03 23:24:43,790 INFO L354 Elim1Store]: treesize reduction 200, result has 14.9 percent of original size [2021-11-03 23:24:43,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 918 treesize of output 886 [2021-11-03 23:24:43,828 INFO L354 Elim1Store]: treesize reduction 222, result has 23.2 percent of original size [2021-11-03 23:24:43,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 860 treesize of output 860 [2021-11-03 23:24:44,135 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 23:24:44,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 23:24:44,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4341 treesize of output 3957 [2021-11-03 23:24:44,512 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 23:24:44,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 285 treesize of output 273 [2021-11-03 23:24:45,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 23:24:45,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 508 treesize of output 478 [2021-11-03 23:24:45,503 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 23:24:45,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176285906] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 23:24:45,503 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 23:24:45,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 38 [2021-11-03 23:24:45,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113129506] [2021-11-03 23:24:45,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-03 23:24:45,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-03 23:24:45,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:24:45,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-03 23:24:45,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1288, Unknown=0, NotChecked=0, Total=1406 [2021-11-03 23:24:45,505 INFO L87 Difference]: Start difference. First operand 270 states and 310 transitions. Second operand has 38 states, 38 states have (on average 4.105263157894737) internal successors, (156), 38 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:47,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:24:47,306 INFO L93 Difference]: Finished difference Result 499 states and 578 transitions. [2021-11-03 23:24:47,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-03 23:24:47,306 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.105263157894737) internal successors, (156), 38 states have internal predecessors, (156), 0 states have call successors, (0), 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 54 [2021-11-03 23:24:47,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:24:47,307 INFO L225 Difference]: With dead ends: 499 [2021-11-03 23:24:47,308 INFO L226 Difference]: Without dead ends: 342 [2021-11-03 23:24:47,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 1753.53ms TimeCoverageRelationStatistics Valid=267, Invalid=2703, Unknown=0, NotChecked=0, Total=2970 [2021-11-03 23:24:47,309 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 126 mSDsluCounter, 2847 mSDsCounter, 0 mSdLazyCounter, 2901 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 926.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.83ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1005 IncrementalHoareTripleChecker+Unchecked, 1107.08ms IncrementalHoareTripleChecker+Time [2021-11-03 23:24:47,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 0 Invalid, 3929 Unknown, 0 Unchecked, 5.83ms Time], IncrementalHoareTripleChecker [23 Valid, 2901 Invalid, 0 Unknown, 1005 Unchecked, 1107.08ms Time] [2021-11-03 23:24:47,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-11-03 23:24:47,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 270. [2021-11-03 23:24:47,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 259 states have (on average 1.2084942084942085) internal successors, (313), 269 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:47,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 313 transitions. [2021-11-03 23:24:47,319 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 313 transitions. Word has length 54 [2021-11-03 23:24:47,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:24:47,320 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 313 transitions. [2021-11-03 23:24:47,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 4.105263157894737) internal successors, (156), 38 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:47,320 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 313 transitions. [2021-11-03 23:24:47,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-03 23:24:47,320 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:24:47,321 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:24:47,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-03 23:24:47,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:24:47,531 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 23:24:47,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:24:47,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1207510369, now seen corresponding path program 1 times [2021-11-03 23:24:47,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:24:47,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166955863] [2021-11-03 23:24:47,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:24:47,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:24:47,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:24:47,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 23:24:47,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:24:47,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166955863] [2021-11-03 23:24:47,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166955863] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:24:47,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:24:47,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-03 23:24:47,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794943447] [2021-11-03 23:24:47,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:24:47,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 23:24:47,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:24:47,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 23:24:47,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-11-03 23:24:47,979 INFO L87 Difference]: Start difference. First operand 270 states and 313 transitions. Second operand has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 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) [2021-11-03 23:24:49,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:24:49,654 INFO L93 Difference]: Finished difference Result 517 states and 611 transitions. [2021-11-03 23:24:49,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 23:24:49,654 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 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 57 [2021-11-03 23:24:49,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:24:49,656 INFO L225 Difference]: With dead ends: 517 [2021-11-03 23:24:49,656 INFO L226 Difference]: Without dead ends: 515 [2021-11-03 23:24:49,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 408.37ms TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2021-11-03 23:24:49,657 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1027 mSDsluCounter, 1557 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1153.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.07ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1363.73ms IncrementalHoareTripleChecker+Time [2021-11-03 23:24:49,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1027 Valid, 0 Invalid, 2393 Unknown, 0 Unchecked, 6.07ms Time], IncrementalHoareTripleChecker [14 Valid, 2379 Invalid, 0 Unknown, 0 Unchecked, 1363.73ms Time] [2021-11-03 23:24:49,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2021-11-03 23:24:49,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 289. [2021-11-03 23:24:49,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 278 states have (on average 1.1978417266187051) internal successors, (333), 288 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) [2021-11-03 23:24:49,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 333 transitions. [2021-11-03 23:24:49,669 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 333 transitions. Word has length 57 [2021-11-03 23:24:49,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:24:49,669 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 333 transitions. [2021-11-03 23:24:49,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 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) [2021-11-03 23:24:49,669 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 333 transitions. [2021-11-03 23:24:49,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-03 23:24:49,670 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:24:49,670 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:24:49,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-03 23:24:49,670 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 23:24:49,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:24:49,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1209357411, now seen corresponding path program 1 times [2021-11-03 23:24:49,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:24:49,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866637587] [2021-11-03 23:24:49,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:24:49,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:24:49,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:24:50,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 23:24:50,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:24:50,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866637587] [2021-11-03 23:24:50,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866637587] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:24:50,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:24:50,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-03 23:24:50,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561523899] [2021-11-03 23:24:50,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:24:50,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 23:24:50,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:24:50,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 23:24:50,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-11-03 23:24:50,002 INFO L87 Difference]: Start difference. First operand 289 states and 333 transitions. Second operand has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 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) [2021-11-03 23:24:51,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:24:51,318 INFO L93 Difference]: Finished difference Result 542 states and 638 transitions. [2021-11-03 23:24:51,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 23:24:51,319 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 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 57 [2021-11-03 23:24:51,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:24:51,320 INFO L225 Difference]: With dead ends: 542 [2021-11-03 23:24:51,320 INFO L226 Difference]: Without dead ends: 413 [2021-11-03 23:24:51,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 350.58ms TimeCoverageRelationStatistics Valid=121, Invalid=479, Unknown=0, NotChecked=0, Total=600 [2021-11-03 23:24:51,321 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 856 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 2195 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 873.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.52ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1052.49ms IncrementalHoareTripleChecker+Time [2021-11-03 23:24:51,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [856 Valid, 0 Invalid, 2224 Unknown, 0 Unchecked, 5.52ms Time], IncrementalHoareTripleChecker [29 Valid, 2195 Invalid, 0 Unknown, 0 Unchecked, 1052.49ms Time] [2021-11-03 23:24:51,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2021-11-03 23:24:51,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 289. [2021-11-03 23:24:51,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 278 states have (on average 1.1942446043165467) internal successors, (332), 288 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:51,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 332 transitions. [2021-11-03 23:24:51,332 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 332 transitions. Word has length 57 [2021-11-03 23:24:51,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:24:51,333 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 332 transitions. [2021-11-03 23:24:51,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 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) [2021-11-03 23:24:51,333 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 332 transitions. [2021-11-03 23:24:51,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-03 23:24:51,333 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:24:51,334 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:24:51,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-03 23:24:51,334 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 23:24:51,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:24:51,334 INFO L85 PathProgramCache]: Analyzing trace with hash -2112550911, now seen corresponding path program 1 times [2021-11-03 23:24:51,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:24:51,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126866412] [2021-11-03 23:24:51,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:24:51,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:24:51,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:24:51,367 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 23:24:51,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:24:51,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126866412] [2021-11-03 23:24:51,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126866412] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:24:51,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:24:51,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:24:51,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697066270] [2021-11-03 23:24:51,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:24:51,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:24:51,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:24:51,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:24:51,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:24:51,369 INFO L87 Difference]: Start difference. First operand 289 states and 332 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:51,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:24:51,684 INFO L93 Difference]: Finished difference Result 649 states and 745 transitions. [2021-11-03 23:24:51,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 23:24:51,685 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-03 23:24:51,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:24:51,686 INFO L225 Difference]: With dead ends: 649 [2021-11-03 23:24:51,686 INFO L226 Difference]: Without dead ends: 435 [2021-11-03 23:24:51,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.10ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:24:51,687 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 146 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 231.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.75ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 287.91ms IncrementalHoareTripleChecker+Time [2021-11-03 23:24:51,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 0 Invalid, 531 Unknown, 0 Unchecked, 0.75ms Time], IncrementalHoareTripleChecker [12 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 287.91ms Time] [2021-11-03 23:24:51,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2021-11-03 23:24:51,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 280. [2021-11-03 23:24:51,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 269 states have (on average 1.1821561338289963) internal successors, (318), 279 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:51,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 318 transitions. [2021-11-03 23:24:51,698 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 318 transitions. Word has length 59 [2021-11-03 23:24:51,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:24:51,698 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 318 transitions. [2021-11-03 23:24:51,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:51,699 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 318 transitions. [2021-11-03 23:24:51,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-03 23:24:51,699 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:24:51,699 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:24:51,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-03 23:24:51,700 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 23:24:51,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:24:51,700 INFO L85 PathProgramCache]: Analyzing trace with hash -2135183165, now seen corresponding path program 1 times [2021-11-03 23:24:51,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:24:51,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550220204] [2021-11-03 23:24:51,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:24:51,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:24:51,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:24:51,748 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-03 23:24:51,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:24:51,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550220204] [2021-11-03 23:24:51,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550220204] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:24:51,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:24:51,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 23:24:51,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208501730] [2021-11-03 23:24:51,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:24:51,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 23:24:51,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:24:51,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 23:24:51,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 23:24:51,750 INFO L87 Difference]: Start difference. First operand 280 states and 318 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:52,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:24:52,280 INFO L93 Difference]: Finished difference Result 618 states and 697 transitions. [2021-11-03 23:24:52,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 23:24:52,280 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-03 23:24:52,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:24:52,281 INFO L225 Difference]: With dead ends: 618 [2021-11-03 23:24:52,281 INFO L226 Difference]: Without dead ends: 437 [2021-11-03 23:24:52,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 25.72ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-03 23:24:52,282 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 181 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 388.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.67ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 481.53ms IncrementalHoareTripleChecker+Time [2021-11-03 23:24:52,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 0 Invalid, 1179 Unknown, 0 Unchecked, 1.67ms Time], IncrementalHoareTripleChecker [11 Valid, 1168 Invalid, 0 Unknown, 0 Unchecked, 481.53ms Time] [2021-11-03 23:24:52,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2021-11-03 23:24:52,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 272. [2021-11-03 23:24:52,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 261 states have (on average 1.1800766283524904) internal successors, (308), 271 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:52,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 308 transitions. [2021-11-03 23:24:52,293 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 308 transitions. Word has length 59 [2021-11-03 23:24:52,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:24:52,294 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 308 transitions. [2021-11-03 23:24:52,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:52,294 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 308 transitions. [2021-11-03 23:24:52,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 23:24:52,294 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:24:52,294 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:24:52,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-03 23:24:52,295 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 23:24:52,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:24:52,295 INFO L85 PathProgramCache]: Analyzing trace with hash -122162847, now seen corresponding path program 1 times [2021-11-03 23:24:52,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:24:52,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628702250] [2021-11-03 23:24:52,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:24:52,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:24:52,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:24:52,356 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-03 23:24:52,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:24:52,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628702250] [2021-11-03 23:24:52,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628702250] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:24:52,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:24:52,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 23:24:52,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394839924] [2021-11-03 23:24:52,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:24:52,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 23:24:52,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:24:52,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 23:24:52,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:24:52,358 INFO L87 Difference]: Start difference. First operand 272 states and 308 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:52,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:24:52,856 INFO L93 Difference]: Finished difference Result 554 states and 638 transitions. [2021-11-03 23:24:52,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 23:24:52,856 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-03 23:24:52,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:24:52,857 INFO L225 Difference]: With dead ends: 554 [2021-11-03 23:24:52,857 INFO L226 Difference]: Without dead ends: 393 [2021-11-03 23:24:52,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.52ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 23:24:52,858 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 114 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 375.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.27ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 463.66ms IncrementalHoareTripleChecker+Time [2021-11-03 23:24:52,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 0 Invalid, 1071 Unknown, 0 Unchecked, 1.27ms Time], IncrementalHoareTripleChecker [4 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 463.66ms Time] [2021-11-03 23:24:52,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2021-11-03 23:24:52,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 272. [2021-11-03 23:24:52,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 261 states have (on average 1.1685823754789273) internal successors, (305), 271 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:52,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 305 transitions. [2021-11-03 23:24:52,874 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 305 transitions. Word has length 60 [2021-11-03 23:24:52,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:24:52,874 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 305 transitions. [2021-11-03 23:24:52,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:52,875 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 305 transitions. [2021-11-03 23:24:52,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 23:24:52,875 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:24:52,875 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:24:52,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-03 23:24:52,876 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 23:24:52,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:24:52,876 INFO L85 PathProgramCache]: Analyzing trace with hash -2019809499, now seen corresponding path program 1 times [2021-11-03 23:24:52,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:24:52,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031855136] [2021-11-03 23:24:52,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:24:52,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:24:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:24:52,994 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 23:24:52,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:24:52,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031855136] [2021-11-03 23:24:52,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031855136] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 23:24:52,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962313265] [2021-11-03 23:24:52,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:24:52,995 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:24:52,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:24:52,996 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:24:52,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-03 23:24:53,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:24:53,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-03 23:24:53,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:24:53,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-03 23:24:53,330 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 23:24:53,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 23:24:53,381 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 23:24:53,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 23:24:53,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-11-03 23:24:53,489 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 23:24:53,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-11-03 23:24:53,562 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 23:24:53,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962313265] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 23:24:53,563 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 23:24:53,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 22 [2021-11-03 23:24:53,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646374898] [2021-11-03 23:24:53,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-03 23:24:53,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-03 23:24:53,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:24:53,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-03 23:24:53,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2021-11-03 23:24:53,564 INFO L87 Difference]: Start difference. First operand 272 states and 305 transitions. Second operand has 22 states, 22 states have (on average 4.636363636363637) internal successors, (102), 22 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:54,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:24:54,879 INFO L93 Difference]: Finished difference Result 600 states and 679 transitions. [2021-11-03 23:24:54,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-03 23:24:54,880 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.636363636363637) internal successors, (102), 22 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-03 23:24:54,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:24:54,881 INFO L225 Difference]: With dead ends: 600 [2021-11-03 23:24:54,881 INFO L226 Difference]: Without dead ends: 419 [2021-11-03 23:24:54,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 320.47ms TimeCoverageRelationStatistics Valid=193, Invalid=677, Unknown=0, NotChecked=0, Total=870 [2021-11-03 23:24:54,882 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 246 mSDsluCounter, 2951 mSDsCounter, 0 mSdLazyCounter, 3158 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 937.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.56ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 3158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 931 IncrementalHoareTripleChecker+Unchecked, 1147.54ms IncrementalHoareTripleChecker+Time [2021-11-03 23:24:54,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 0 Invalid, 4109 Unknown, 0 Unchecked, 5.56ms Time], IncrementalHoareTripleChecker [20 Valid, 3158 Invalid, 0 Unknown, 931 Unchecked, 1147.54ms Time] [2021-11-03 23:24:54,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-11-03 23:24:54,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 284. [2021-11-03 23:24:54,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 273 states have (on average 1.1611721611721613) internal successors, (317), 283 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:54,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 317 transitions. [2021-11-03 23:24:54,904 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 317 transitions. Word has length 60 [2021-11-03 23:24:54,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:24:54,904 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 317 transitions. [2021-11-03 23:24:54,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.636363636363637) internal successors, (102), 22 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:54,904 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 317 transitions. [2021-11-03 23:24:54,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-03 23:24:54,905 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:24:54,905 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:24:54,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-03 23:24:55,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-03 23:24:55,120 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 23:24:55,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:24:55,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1419146768, now seen corresponding path program 1 times [2021-11-03 23:24:55,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:24:55,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478518188] [2021-11-03 23:24:55,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:24:55,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:24:55,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:24:55,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:24:55,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:24:55,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478518188] [2021-11-03 23:24:55,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478518188] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 23:24:55,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170641440] [2021-11-03 23:24:55,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:24:55,630 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:24:55,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:24:55,631 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:24:55,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-03 23:24:55,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:24:55,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 118 conjunts are in the unsatisfiable core [2021-11-03 23:24:55,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:24:55,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-03 23:24:55,844 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-03 23:24:55,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 15 [2021-11-03 23:24:56,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:24:56,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:24:56,407 INFO L354 Elim1Store]: treesize reduction 281, result has 15.9 percent of original size [2021-11-03 23:24:56,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 478 treesize of output 313 [2021-11-03 23:24:56,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:24:56,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:24:56,430 INFO L354 Elim1Store]: treesize reduction 120, result has 20.0 percent of original size [2021-11-03 23:24:56,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 162 treesize of output 70 [2021-11-03 23:24:56,867 INFO L354 Elim1Store]: treesize reduction 118, result has 2.5 percent of original size [2021-11-03 23:24:56,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 156 treesize of output 89 [2021-11-03 23:24:56,885 INFO L354 Elim1Store]: treesize reduction 70, result has 4.1 percent of original size [2021-11-03 23:24:56,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 38 [2021-11-03 23:24:56,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 23:24:56,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:24:56,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170641440] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:24:56,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-03 23:24:56,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [19] total 32 [2021-11-03 23:24:56,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155297061] [2021-11-03 23:24:56,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:24:56,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-03 23:24:56,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:24:56,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-03 23:24:56,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=910, Unknown=0, NotChecked=0, Total=992 [2021-11-03 23:24:56,938 INFO L87 Difference]: Start difference. First operand 284 states and 317 transitions. Second operand has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 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) [2021-11-03 23:24:58,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:24:58,767 INFO L93 Difference]: Finished difference Result 516 states and 589 transitions. [2021-11-03 23:24:58,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-03 23:24:58,767 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 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 64 [2021-11-03 23:24:58,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:24:58,768 INFO L225 Difference]: With dead ends: 516 [2021-11-03 23:24:58,768 INFO L226 Difference]: Without dead ends: 514 [2021-11-03 23:24:58,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 1207.74ms TimeCoverageRelationStatistics Valid=224, Invalid=1756, Unknown=0, NotChecked=0, Total=1980 [2021-11-03 23:24:58,769 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1241 mSDsluCounter, 1419 mSDsCounter, 0 mSdLazyCounter, 2298 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 984.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1241 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.71ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1164.90ms IncrementalHoareTripleChecker+Time [2021-11-03 23:24:58,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1241 Valid, 0 Invalid, 2327 Unknown, 0 Unchecked, 5.71ms Time], IncrementalHoareTripleChecker [29 Valid, 2298 Invalid, 0 Unknown, 0 Unchecked, 1164.90ms Time] [2021-11-03 23:24:58,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-11-03 23:24:58,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 291. [2021-11-03 23:24:58,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 280 states have (on average 1.1642857142857144) internal successors, (326), 290 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:24:58,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 326 transitions. [2021-11-03 23:24:58,784 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 326 transitions. Word has length 64 [2021-11-03 23:24:58,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:24:58,784 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 326 transitions. [2021-11-03 23:24:58,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 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) [2021-11-03 23:24:58,784 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 326 transitions. [2021-11-03 23:24:58,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-03 23:24:58,785 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:24:58,785 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:24:58,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-03 23:24:58,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-03 23:24:58,996 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 23:24:58,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:24:58,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1420993810, now seen corresponding path program 1 times [2021-11-03 23:24:58,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:24:58,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263662868] [2021-11-03 23:24:58,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:24:58,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:24:59,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:24:59,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 23:24:59,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:24:59,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263662868] [2021-11-03 23:24:59,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263662868] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:24:59,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:24:59,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-03 23:24:59,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673415349] [2021-11-03 23:24:59,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:24:59,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 23:24:59,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:24:59,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 23:24:59,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-03 23:24:59,263 INFO L87 Difference]: Start difference. First operand 291 states and 326 transitions. Second operand has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 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) [2021-11-03 23:25:00,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:25:00,180 INFO L93 Difference]: Finished difference Result 448 states and 510 transitions. [2021-11-03 23:25:00,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 23:25:00,181 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 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 64 [2021-11-03 23:25:00,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:25:00,182 INFO L225 Difference]: With dead ends: 448 [2021-11-03 23:25:00,182 INFO L226 Difference]: Without dead ends: 333 [2021-11-03 23:25:00,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 368.98ms TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2021-11-03 23:25:00,183 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1443 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 527.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1443 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.94ms SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 625.48ms IncrementalHoareTripleChecker+Time [2021-11-03 23:25:00,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1443 Valid, 0 Invalid, 1104 Unknown, 0 Unchecked, 2.94ms Time], IncrementalHoareTripleChecker [68 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 625.48ms Time] [2021-11-03 23:25:00,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-11-03 23:25:00,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 291. [2021-11-03 23:25:00,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 280 states have (on average 1.1571428571428573) internal successors, (324), 290 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:25:00,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 324 transitions. [2021-11-03 23:25:00,197 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 324 transitions. Word has length 64 [2021-11-03 23:25:00,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:25:00,197 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 324 transitions. [2021-11-03 23:25:00,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 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) [2021-11-03 23:25:00,198 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 324 transitions. [2021-11-03 23:25:00,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-03 23:25:00,198 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:25:00,198 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:25:00,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-03 23:25:00,199 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 23:25:00,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:25:00,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1098966124, now seen corresponding path program 1 times [2021-11-03 23:25:00,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:25:00,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606267853] [2021-11-03 23:25:00,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:25:00,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:25:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:25:00,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 23:25:00,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:25:00,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606267853] [2021-11-03 23:25:00,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606267853] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:25:00,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:25:00,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 23:25:00,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813155564] [2021-11-03 23:25:00,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:25:00,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 23:25:00,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:25:00,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 23:25:00,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 23:25:00,277 INFO L87 Difference]: Start difference. First operand 291 states and 324 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) [2021-11-03 23:25:00,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:25:00,569 INFO L93 Difference]: Finished difference Result 406 states and 461 transitions. [2021-11-03 23:25:00,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 23:25:00,569 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 64 [2021-11-03 23:25:00,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:25:00,570 INFO L225 Difference]: With dead ends: 406 [2021-11-03 23:25:00,570 INFO L226 Difference]: Without dead ends: 289 [2021-11-03 23:25:00,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 46.02ms TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-03 23:25:00,571 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 550 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 191.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.15ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 240.22ms IncrementalHoareTripleChecker+Time [2021-11-03 23:25:00,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 0 Invalid, 511 Unknown, 0 Unchecked, 1.15ms Time], IncrementalHoareTripleChecker [8 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 240.22ms Time] [2021-11-03 23:25:00,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-11-03 23:25:00,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2021-11-03 23:25:00,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 278 states have (on average 1.1510791366906474) internal successors, (320), 288 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:25:00,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 320 transitions. [2021-11-03 23:25:00,585 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 320 transitions. Word has length 64 [2021-11-03 23:25:00,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:25:00,585 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 320 transitions. [2021-11-03 23:25:00,586 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) [2021-11-03 23:25:00,586 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 320 transitions. [2021-11-03 23:25:00,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-03 23:25:00,586 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:25:00,586 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:25:00,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-03 23:25:00,588 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 23:25:00,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:25:00,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1999424782, now seen corresponding path program 1 times [2021-11-03 23:25:00,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:25:00,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392855651] [2021-11-03 23:25:00,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:25:00,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:25:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:25:00,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 23:25:00,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:25:00,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392855651] [2021-11-03 23:25:00,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392855651] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:25:00,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:25:00,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:25:00,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060044566] [2021-11-03 23:25:00,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:25:00,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:25:00,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:25:00,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:25:00,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:25:00,650 INFO L87 Difference]: Start difference. First operand 289 states and 320 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:25:00,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:25:00,884 INFO L93 Difference]: Finished difference Result 289 states and 320 transitions. [2021-11-03 23:25:00,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 23:25:00,884 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-03 23:25:00,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:25:00,885 INFO L225 Difference]: With dead ends: 289 [2021-11-03 23:25:00,885 INFO L226 Difference]: Without dead ends: 287 [2021-11-03 23:25:00,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.03ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:25:00,886 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 141 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 168.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.58ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 207.21ms IncrementalHoareTripleChecker+Time [2021-11-03 23:25:00,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 0 Invalid, 359 Unknown, 0 Unchecked, 0.58ms Time], IncrementalHoareTripleChecker [0 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 207.21ms Time] [2021-11-03 23:25:00,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-11-03 23:25:00,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-11-03 23:25:00,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 277 states have (on average 1.148014440433213) internal successors, (318), 286 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:25:00,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 318 transitions. [2021-11-03 23:25:00,901 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 318 transitions. Word has length 66 [2021-11-03 23:25:00,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:25:00,901 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 318 transitions. [2021-11-03 23:25:00,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:25:00,901 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 318 transitions. [2021-11-03 23:25:00,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-03 23:25:00,902 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:25:00,902 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:25:00,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-03 23:25:00,902 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 23:25:00,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:25:00,903 INFO L85 PathProgramCache]: Analyzing trace with hash -233356203, now seen corresponding path program 1 times [2021-11-03 23:25:00,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:25:00,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866639683] [2021-11-03 23:25:00,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:25:00,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:25:00,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:25:01,246 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-03 23:25:01,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:25:01,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866639683] [2021-11-03 23:25:01,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866639683] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 23:25:01,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243346939] [2021-11-03 23:25:01,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:25:01,246 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:25:01,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:25:01,248 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:25:01,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-03 23:25:01,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:25:01,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 121 conjunts are in the unsatisfiable core [2021-11-03 23:25:01,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:25:01,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-03 23:25:01,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 52 [2021-11-03 23:25:01,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 39 [2021-11-03 23:25:02,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:25:02,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:25:02,691 INFO L354 Elim1Store]: treesize reduction 478, result has 5.5 percent of original size [2021-11-03 23:25:02,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 518 treesize of output 316 [2021-11-03 23:25:02,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:25:02,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:25:02,718 INFO L354 Elim1Store]: treesize reduction 185, result has 11.5 percent of original size [2021-11-03 23:25:02,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 187 treesize of output 77 [2021-11-03 23:25:03,094 INFO L354 Elim1Store]: treesize reduction 66, result has 4.3 percent of original size [2021-11-03 23:25:03,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 158 treesize of output 95 [2021-11-03 23:25:03,104 INFO L354 Elim1Store]: treesize reduction 50, result has 5.7 percent of original size [2021-11-03 23:25:03,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 72 treesize of output 46 [2021-11-03 23:25:03,146 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-03 23:25:03,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 23:25:13,750 WARN L210 SmtUtils]: Spent 8.49s on a formula simplification. DAG size of input: 727 DAG size of output: 228 [2021-11-03 23:25:13,750 INFO L354 Elim1Store]: treesize reduction 163454, result has 15.0 percent of original size [2021-11-03 23:25:13,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 21 select indices, 21 select index equivalence classes, 0 disjoint index pairs (out of 210 index pairs), introduced 23 new quantified variables, introduced 210 case distinctions, treesize of input 180438285 treesize of output 171693861 Killed by 15