./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_hash_table_swap_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 50333b6a17e96dff6400d2c6a85c0145ae494daf76266f6b6d6936a12a6b2527 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 13:12:14,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 13:12:14,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 13:12:14,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 13:12:14,644 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 13:12:14,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 13:12:14,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 13:12:14,654 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 13:12:14,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 13:12:14,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 13:12:14,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 13:12:14,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 13:12:14,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 13:12:14,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 13:12:14,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 13:12:14,669 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 13:12:14,671 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 13:12:14,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 13:12:14,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 13:12:14,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 13:12:14,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 13:12:14,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 13:12:14,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 13:12:14,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 13:12:14,692 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 13:12:14,693 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 13:12:14,693 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 13:12:14,695 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 13:12:14,695 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 13:12:14,696 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 13:12:14,696 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 13:12:14,696 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 13:12:14,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 13:12:14,698 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 13:12:14,699 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 13:12:14,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 13:12:14,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 13:12:14,701 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 13:12:14,701 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 13:12:14,702 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 13:12:14,703 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 13:12:14,706 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 13:12:14,748 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 13:12:14,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 13:12:14,750 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 13:12:14,750 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 13:12:14,752 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 13:12:14,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 13:12:14,752 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 13:12:14,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 13:12:14,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 13:12:14,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 13:12:14,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 13:12:14,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 13:12:14,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 13:12:14,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 13:12:14,754 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 13:12:14,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 13:12:14,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 13:12:14,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 13:12:14,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 13:12:14,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 13:12:14,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 13:12:14,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 13:12:14,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 13:12:14,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 13:12:14,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 13:12:14,755 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 13:12:14,755 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 13:12:14,755 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 13:12:14,755 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 13:12:14,755 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50333b6a17e96dff6400d2c6a85c0145ae494daf76266f6b6d6936a12a6b2527 [2021-11-05 13:12:15,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 13:12:15,070 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 13:12:15,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 13:12:15,075 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 13:12:15,079 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 13:12:15,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i [2021-11-05 13:12:15,134 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ae855597/09573edd2f3d44a18acfea93468960de/FLAGfef8af6bf [2021-11-05 13:12:15,772 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 13:12:15,773 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i [2021-11-05 13:12:15,808 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ae855597/09573edd2f3d44a18acfea93468960de/FLAGfef8af6bf [2021-11-05 13:12:16,166 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ae855597/09573edd2f3d44a18acfea93468960de [2021-11-05 13:12:16,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 13:12:16,172 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 13:12:16,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 13:12:16,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 13:12:16,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 13:12:16,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 01:12:16" (1/1) ... [2021-11-05 13:12:16,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76adc405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:12:16, skipping insertion in model container [2021-11-05 13:12:16,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 01:12:16" (1/1) ... [2021-11-05 13:12:16,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 13:12:16,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 13:12:16,527 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_hash_table_swap_harness.i[4493,4506] [2021-11-05 13:12:16,534 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_hash_table_swap_harness.i[4553,4566] [2021-11-05 13:12:16,563 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 13:12:16,568 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 13:12:17,370 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:17,371 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:17,371 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:17,372 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:17,373 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:17,380 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:17,381 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:17,382 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:17,383 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:17,384 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:17,384 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:17,385 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:17,385 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:17,657 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 13:12:17,659 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 13:12:17,660 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 13:12:17,661 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 13:12:17,662 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 13:12:17,663 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 13:12:17,663 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 13:12:17,664 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 13:12:17,664 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 13:12:17,673 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 13:12:17,824 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 13:12:18,152 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:18,154 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:18,185 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:18,187 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:18,195 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:18,195 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:18,215 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:18,216 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:18,218 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:18,219 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:18,219 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:18,219 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:18,220 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:18,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 13:12:18,301 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 13:12:18,320 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_hash_table_swap_harness.i[4493,4506] [2021-11-05 13:12:18,321 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_hash_table_swap_harness.i[4553,4566] [2021-11-05 13:12:18,323 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 13:12:18,324 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 13:12:18,362 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:18,363 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:18,363 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:18,363 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:18,364 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:18,371 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:18,373 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:18,374 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:18,374 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:18,374 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:18,375 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:18,376 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:18,376 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:18,398 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 13:12:18,399 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 13:12:18,414 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 13:12:18,414 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 13:12:18,415 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 13:12:18,415 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 13:12:18,416 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 13:12:18,416 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 13:12:18,416 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 13:12:18,417 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 13:12:18,438 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 13:12:18,515 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:18,515 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:18,521 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:18,521 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:18,524 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:18,524 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:18,546 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:18,548 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:18,548 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:18,548 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:18,549 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:18,549 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:18,549 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:12:18,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 13:12:18,845 INFO L208 MainTranslator]: Completed translation [2021-11-05 13:12:18,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:12:18 WrapperNode [2021-11-05 13:12:18,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 13:12:18,847 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 13:12:18,847 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 13:12:18,847 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 13:12:18,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:12:18" (1/1) ... [2021-11-05 13:12:18,978 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:12:18" (1/1) ... [2021-11-05 13:12:19,067 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 13:12:19,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 13:12:19,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 13:12:19,070 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 13:12:19,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:12:18" (1/1) ... [2021-11-05 13:12:19,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:12:18" (1/1) ... [2021-11-05 13:12:19,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:12:18" (1/1) ... [2021-11-05 13:12:19,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:12:18" (1/1) ... [2021-11-05 13:12:19,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:12:18" (1/1) ... [2021-11-05 13:12:19,168 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:12:18" (1/1) ... [2021-11-05 13:12:19,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:12:18" (1/1) ... [2021-11-05 13:12:19,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 13:12:19,188 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 13:12:19,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 13:12:19,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 13:12:19,189 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:12:18" (1/1) ... [2021-11-05 13:12:19,194 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 13:12:19,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:12:19,219 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-05 13:12:19,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-05 13:12:19,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-05 13:12:19,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 13:12:19,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 13:12:19,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 13:12:19,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 13:12:19,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 13:12:19,266 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-05 13:12:19,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 13:12:19,267 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-05 13:12:19,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 13:12:19,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 13:12:19,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 13:12:19,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 13:12:19,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 13:12:26,635 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 13:12:26,639 INFO L299 CfgBuilder]: Removed 190 assume(true) statements. [2021-11-05 13:12:26,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 01:12:26 BoogieIcfgContainer [2021-11-05 13:12:26,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 13:12:26,643 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 13:12:26,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 13:12:26,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 13:12:26,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 01:12:16" (1/3) ... [2021-11-05 13:12:26,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25a68afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 01:12:26, skipping insertion in model container [2021-11-05 13:12:26,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:12:18" (2/3) ... [2021-11-05 13:12:26,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25a68afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 01:12:26, skipping insertion in model container [2021-11-05 13:12:26,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 01:12:26" (3/3) ... [2021-11-05 13:12:26,648 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_swap_harness.i [2021-11-05 13:12:26,652 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 13:12:26,653 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-05 13:12:26,690 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 13:12:26,699 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-05 13:12:26,700 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-05 13:12:26,721 INFO L276 IsEmpty]: Start isEmpty. Operand has 164 states, 159 states have (on average 1.3584905660377358) internal successors, (216), 163 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) [2021-11-05 13:12:26,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-05 13:12:26,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:12:26,727 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:12:26,728 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:12:26,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:12:26,735 INFO L85 PathProgramCache]: Analyzing trace with hash 67832654, now seen corresponding path program 1 times [2021-11-05 13:12:26,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:12:26,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095853961] [2021-11-05 13:12:26,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:12:26,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:12:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:12:27,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:12:27,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:12:27,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095853961] [2021-11-05 13:12:27,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095853961] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:12:27,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:12:27,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 13:12:27,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26689464] [2021-11-05 13:12:27,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:12:27,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 13:12:27,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:12:27,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 13:12:27,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 13:12:27,232 INFO L87 Difference]: Start difference. First operand has 164 states, 159 states have (on average 1.3584905660377358) internal successors, (216), 163 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) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:27,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:12:27,256 INFO L93 Difference]: Finished difference Result 323 states and 425 transitions. [2021-11-05 13:12:27,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 13:12:27,259 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2021-11-05 13:12:27,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:12:27,265 INFO L225 Difference]: With dead ends: 323 [2021-11-05 13:12:27,265 INFO L226 Difference]: Without dead ends: 158 [2021-11-05 13:12:27,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 13:12:27,270 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.46ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 13:12:27,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 1.46ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 13:12:27,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-11-05 13:12:27,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2021-11-05 13:12:27,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 154 states have (on average 1.2337662337662338) internal successors, (190), 157 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:27,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 190 transitions. [2021-11-05 13:12:27,309 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 190 transitions. Word has length 15 [2021-11-05 13:12:27,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:12:27,309 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 190 transitions. [2021-11-05 13:12:27,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:27,311 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 190 transitions. [2021-11-05 13:12:27,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-05 13:12:27,311 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:12:27,312 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:12:27,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 13:12:27,312 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:12:27,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:12:27,313 INFO L85 PathProgramCache]: Analyzing trace with hash -325194356, now seen corresponding path program 1 times [2021-11-05 13:12:27,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:12:27,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789839852] [2021-11-05 13:12:27,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:12:27,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:12:27,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:12:27,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:12:27,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:12:27,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789839852] [2021-11-05 13:12:27,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789839852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:12:27,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:12:27,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 13:12:27,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622710624] [2021-11-05 13:12:27,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:12:27,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 13:12:27,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:12:27,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 13:12:27,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 13:12:27,556 INFO L87 Difference]: Start difference. First operand 158 states and 190 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:27,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:12:27,599 INFO L93 Difference]: Finished difference Result 270 states and 323 transitions. [2021-11-05 13:12:27,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 13:12:27,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2021-11-05 13:12:27,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:12:27,602 INFO L225 Difference]: With dead ends: 270 [2021-11-05 13:12:27,602 INFO L226 Difference]: Without dead ends: 238 [2021-11-05 13:12:27,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.83ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 13:12:27,603 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 91 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.14ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.61ms IncrementalHoareTripleChecker+Time [2021-11-05 13:12:27,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 374 Invalid, 5 Unknown, 0 Unchecked, 4.14ms Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 20.61ms Time] [2021-11-05 13:12:27,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-11-05 13:12:27,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 222. [2021-11-05 13:12:27,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 218 states have (on average 1.224770642201835) internal successors, (267), 221 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:27,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 267 transitions. [2021-11-05 13:12:27,618 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 267 transitions. Word has length 15 [2021-11-05 13:12:27,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:12:27,619 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 267 transitions. [2021-11-05 13:12:27,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:27,619 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 267 transitions. [2021-11-05 13:12:27,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-05 13:12:27,620 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:12:27,620 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:12:27,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 13:12:27,620 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:12:27,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:12:27,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1994950714, now seen corresponding path program 1 times [2021-11-05 13:12:27,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:12:27,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466429126] [2021-11-05 13:12:27,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:12:27,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:12:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:12:27,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:12:27,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:12:27,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466429126] [2021-11-05 13:12:27,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466429126] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:12:27,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:12:27,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 13:12:27,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451776167] [2021-11-05 13:12:27,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:12:27,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 13:12:27,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:12:27,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 13:12:27,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 13:12:27,856 INFO L87 Difference]: Start difference. First operand 222 states and 267 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:27,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:12:27,878 INFO L93 Difference]: Finished difference Result 262 states and 313 transitions. [2021-11-05 13:12:27,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 13:12:27,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2021-11-05 13:12:27,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:12:27,880 INFO L225 Difference]: With dead ends: 262 [2021-11-05 13:12:27,880 INFO L226 Difference]: Without dead ends: 241 [2021-11-05 13:12:27,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.60ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 13:12:27,882 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 20 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.27ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.75ms IncrementalHoareTripleChecker+Time [2021-11-05 13:12:27,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 376 Invalid, 3 Unknown, 0 Unchecked, 1.27ms Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 13.75ms Time] [2021-11-05 13:12:27,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-11-05 13:12:27,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 237. [2021-11-05 13:12:27,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 233 states have (on average 1.2231759656652361) internal successors, (285), 236 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:27,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 285 transitions. [2021-11-05 13:12:27,893 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 285 transitions. Word has length 16 [2021-11-05 13:12:27,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:12:27,894 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 285 transitions. [2021-11-05 13:12:27,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:27,894 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 285 transitions. [2021-11-05 13:12:27,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-05 13:12:27,896 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:12:27,896 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:12:27,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 13:12:27,896 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:12:27,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:12:27,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1734286995, now seen corresponding path program 1 times [2021-11-05 13:12:27,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:12:27,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895772283] [2021-11-05 13:12:27,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:12:27,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:12:27,970 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:12:27,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1698726771] [2021-11-05 13:12:27,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:12:27,971 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:12:27,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:12:27,972 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:12:27,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 13:12:28,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:12:28,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 2525 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-05 13:12:28,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:12:29,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:12:29,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:12:29,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:12:29,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895772283] [2021-11-05 13:12:29,128 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:12:29,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698726771] [2021-11-05 13:12:29,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698726771] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:12:29,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:12:29,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:12:29,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042121858] [2021-11-05 13:12:29,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:12:29,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 13:12:29,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:12:29,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 13:12:29,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:12:29,130 INFO L87 Difference]: Start difference. First operand 237 states and 285 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:29,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:12:29,505 INFO L93 Difference]: Finished difference Result 627 states and 755 transitions. [2021-11-05 13:12:29,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 13:12:29,508 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-05 13:12:29,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:12:29,509 INFO L225 Difference]: With dead ends: 627 [2021-11-05 13:12:29,509 INFO L226 Difference]: Without dead ends: 434 [2021-11-05 13:12:29,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 142.70ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:12:29,511 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 294 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 258.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.89ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 285.88ms IncrementalHoareTripleChecker+Time [2021-11-05 13:12:29,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 913 Invalid, 85 Unknown, 0 Unchecked, 3.89ms Time], IncrementalHoareTripleChecker [20 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 285.88ms Time] [2021-11-05 13:12:29,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-11-05 13:12:29,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 255. [2021-11-05 13:12:29,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 251 states have (on average 1.207171314741036) internal successors, (303), 254 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:29,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 303 transitions. [2021-11-05 13:12:29,522 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 303 transitions. Word has length 50 [2021-11-05 13:12:29,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:12:29,523 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 303 transitions. [2021-11-05 13:12:29,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:29,523 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 303 transitions. [2021-11-05 13:12:29,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-05 13:12:29,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:12:29,525 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:12:29,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-05 13:12:29,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:12:29,740 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:12:29,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:12:29,740 INFO L85 PathProgramCache]: Analyzing trace with hash -569476781, now seen corresponding path program 1 times [2021-11-05 13:12:29,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:12:29,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122471082] [2021-11-05 13:12:29,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:12:29,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:12:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:12:30,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:12:30,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:12:30,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122471082] [2021-11-05 13:12:30,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122471082] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:12:30,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:12:30,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 13:12:30,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286397391] [2021-11-05 13:12:30,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:12:30,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 13:12:30,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:12:30,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 13:12:30,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-05 13:12:30,219 INFO L87 Difference]: Start difference. First operand 255 states and 303 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:32,285 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:12:34,391 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:12:35,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:12:35,661 INFO L93 Difference]: Finished difference Result 454 states and 538 transitions. [2021-11-05 13:12:35,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 13:12:35,662 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 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 [2021-11-05 13:12:35,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:12:35,663 INFO L225 Difference]: With dead ends: 454 [2021-11-05 13:12:35,663 INFO L226 Difference]: Without dead ends: 308 [2021-11-05 13:12:35,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 547.08ms TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-11-05 13:12:35,664 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 260 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4701.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.26ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5040.46ms IncrementalHoareTripleChecker+Time [2021-11-05 13:12:35,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 1188 Invalid, 185 Unknown, 0 Unchecked, 7.26ms Time], IncrementalHoareTripleChecker [8 Valid, 175 Invalid, 2 Unknown, 0 Unchecked, 5040.46ms Time] [2021-11-05 13:12:35,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-11-05 13:12:35,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 257. [2021-11-05 13:12:35,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 253 states have (on average 1.2055335968379446) internal successors, (305), 256 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) [2021-11-05 13:12:35,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 305 transitions. [2021-11-05 13:12:35,673 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 305 transitions. Word has length 54 [2021-11-05 13:12:35,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:12:35,674 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 305 transitions. [2021-11-05 13:12:35,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:35,674 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 305 transitions. [2021-11-05 13:12:35,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-05 13:12:35,679 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:12:35,679 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:12:35,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 13:12:35,680 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:12:35,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:12:35,681 INFO L85 PathProgramCache]: Analyzing trace with hash 132123093, now seen corresponding path program 1 times [2021-11-05 13:12:35,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:12:35,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932589317] [2021-11-05 13:12:35,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:12:35,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:12:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:12:35,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:12:35,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:12:35,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932589317] [2021-11-05 13:12:35,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932589317] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:12:35,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:12:35,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:12:35,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126504569] [2021-11-05 13:12:35,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:12:35,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:12:35,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:12:35,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:12:35,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:12:35,971 INFO L87 Difference]: Start difference. First operand 257 states and 305 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:36,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:12:36,125 INFO L93 Difference]: Finished difference Result 406 states and 483 transitions. [2021-11-05 13:12:36,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 13:12:36,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 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 [2021-11-05 13:12:36,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:12:36,131 INFO L225 Difference]: With dead ends: 406 [2021-11-05 13:12:36,131 INFO L226 Difference]: Without dead ends: 255 [2021-11-05 13:12:36,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.49ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:12:36,134 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 162 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 105.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.60ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 121.57ms IncrementalHoareTripleChecker+Time [2021-11-05 13:12:36,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 344 Invalid, 33 Unknown, 0 Unchecked, 1.60ms Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 121.57ms Time] [2021-11-05 13:12:36,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-11-05 13:12:36,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2021-11-05 13:12:36,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 251 states have (on average 1.1952191235059761) internal successors, (300), 254 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:36,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 300 transitions. [2021-11-05 13:12:36,144 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 300 transitions. Word has length 54 [2021-11-05 13:12:36,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:12:36,145 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 300 transitions. [2021-11-05 13:12:36,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:36,145 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 300 transitions. [2021-11-05 13:12:36,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-05 13:12:36,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:12:36,146 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:12:36,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 13:12:36,146 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:12:36,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:12:36,147 INFO L85 PathProgramCache]: Analyzing trace with hash 844082519, now seen corresponding path program 1 times [2021-11-05 13:12:36,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:12:36,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690057537] [2021-11-05 13:12:36,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:12:36,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:12:36,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:12:36,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:12:36,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:12:36,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690057537] [2021-11-05 13:12:36,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690057537] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:12:36,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:12:36,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 13:12:36,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493159568] [2021-11-05 13:12:36,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:12:36,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 13:12:36,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:12:36,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 13:12:36,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-05 13:12:36,576 INFO L87 Difference]: Start difference. First operand 255 states and 300 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:38,620 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:12:40,765 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:12:41,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:12:41,927 INFO L93 Difference]: Finished difference Result 401 states and 469 transitions. [2021-11-05 13:12:41,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-05 13:12:41,928 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-05 13:12:41,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:12:41,929 INFO L225 Difference]: With dead ends: 401 [2021-11-05 13:12:41,929 INFO L226 Difference]: Without dead ends: 303 [2021-11-05 13:12:41,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 540.47ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-05 13:12:41,930 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 313 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 10 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4601.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.18ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4960.67ms IncrementalHoareTripleChecker+Time [2021-11-05 13:12:41,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 969 Invalid, 175 Unknown, 0 Unchecked, 6.18ms Time], IncrementalHoareTripleChecker [10 Valid, 163 Invalid, 2 Unknown, 0 Unchecked, 4960.67ms Time] [2021-11-05 13:12:41,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-11-05 13:12:41,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 259. [2021-11-05 13:12:41,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 255 states have (on average 1.192156862745098) internal successors, (304), 258 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:41,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 304 transitions. [2021-11-05 13:12:41,939 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 304 transitions. Word has length 55 [2021-11-05 13:12:41,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:12:41,940 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 304 transitions. [2021-11-05 13:12:41,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:41,940 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 304 transitions. [2021-11-05 13:12:41,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-05 13:12:41,941 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:12:41,941 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:12:41,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 13:12:41,941 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:12:41,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:12:41,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1545682393, now seen corresponding path program 1 times [2021-11-05 13:12:41,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:12:41,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764259479] [2021-11-05 13:12:41,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:12:41,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:12:42,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:12:42,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:12:42,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:12:42,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764259479] [2021-11-05 13:12:42,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764259479] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:12:42,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:12:42,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:12:42,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321175761] [2021-11-05 13:12:42,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:12:42,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:12:42,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:12:42,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:12:42,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:12:42,167 INFO L87 Difference]: Start difference. First operand 259 states and 304 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:42,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:12:42,282 INFO L93 Difference]: Finished difference Result 373 states and 438 transitions. [2021-11-05 13:12:42,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 13:12:42,284 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-05 13:12:42,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:12:42,285 INFO L225 Difference]: With dead ends: 373 [2021-11-05 13:12:42,285 INFO L226 Difference]: Without dead ends: 255 [2021-11-05 13:12:42,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.08ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:12:42,286 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 159 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 94.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.09ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 102.65ms IncrementalHoareTripleChecker+Time [2021-11-05 13:12:42,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 339 Invalid, 31 Unknown, 0 Unchecked, 1.09ms Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 102.65ms Time] [2021-11-05 13:12:42,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-11-05 13:12:42,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2021-11-05 13:12:42,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 251 states have (on average 1.1713147410358566) internal successors, (294), 254 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) [2021-11-05 13:12:42,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 294 transitions. [2021-11-05 13:12:42,297 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 294 transitions. Word has length 55 [2021-11-05 13:12:42,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:12:42,298 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 294 transitions. [2021-11-05 13:12:42,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:42,298 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 294 transitions. [2021-11-05 13:12:42,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-05 13:12:42,299 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:12:42,299 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:12:42,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 13:12:42,299 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:12:42,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:12:42,300 INFO L85 PathProgramCache]: Analyzing trace with hash 209502350, now seen corresponding path program 1 times [2021-11-05 13:12:42,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:12:42,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295887701] [2021-11-05 13:12:42,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:12:42,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:12:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:12:42,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:12:42,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:12:42,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295887701] [2021-11-05 13:12:42,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295887701] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:12:42,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:12:42,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:12:42,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308888388] [2021-11-05 13:12:42,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:12:42,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 13:12:42,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:12:42,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 13:12:42,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:12:42,653 INFO L87 Difference]: Start difference. First operand 255 states and 294 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 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) [2021-11-05 13:12:44,700 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:12:46,844 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:12:47,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:12:47,741 INFO L93 Difference]: Finished difference Result 439 states and 506 transitions. [2021-11-05 13:12:47,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 13:12:47,741 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-05 13:12:47,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:12:47,742 INFO L225 Difference]: With dead ends: 439 [2021-11-05 13:12:47,742 INFO L226 Difference]: Without dead ends: 258 [2021-11-05 13:12:47,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 402.14ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 13:12:47,743 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 171 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 18 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4440.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.36ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4779.36ms IncrementalHoareTripleChecker+Time [2021-11-05 13:12:47,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 570 Invalid, 115 Unknown, 0 Unchecked, 3.36ms Time], IncrementalHoareTripleChecker [18 Valid, 95 Invalid, 2 Unknown, 0 Unchecked, 4779.36ms Time] [2021-11-05 13:12:47,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-11-05 13:12:47,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 255. [2021-11-05 13:12:47,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 251 states have (on average 1.1474103585657371) internal successors, (288), 254 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:47,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 288 transitions. [2021-11-05 13:12:47,757 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 288 transitions. Word has length 56 [2021-11-05 13:12:47,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:12:47,757 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 288 transitions. [2021-11-05 13:12:47,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 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) [2021-11-05 13:12:47,758 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 288 transitions. [2021-11-05 13:12:47,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-05 13:12:47,759 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:12:47,759 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:12:47,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 13:12:47,760 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:12:47,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:12:47,760 INFO L85 PathProgramCache]: Analyzing trace with hash -693818886, now seen corresponding path program 1 times [2021-11-05 13:12:47,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:12:47,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823950272] [2021-11-05 13:12:47,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:12:47,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:12:48,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:12:50,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:12:50,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:12:50,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823950272] [2021-11-05 13:12:50,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823950272] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:12:50,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:12:50,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-05 13:12:50,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103319693] [2021-11-05 13:12:50,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:12:50,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-05 13:12:50,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:12:50,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-05 13:12:50,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2021-11-05 13:12:50,558 INFO L87 Difference]: Start difference. First operand 255 states and 288 transitions. Second operand has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:12:52,600 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:12:54,742 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:12:56,846 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:12:58,971 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:13:01,119 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:13:03,211 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:13:05,399 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:13:07,515 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:13:09,676 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:13:11,828 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:13:18,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:13:18,386 INFO L93 Difference]: Finished difference Result 336 states and 378 transitions. [2021-11-05 13:13:18,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-05 13:13:18,387 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-05 13:13:18,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:13:18,389 INFO L225 Difference]: With dead ends: 336 [2021-11-05 13:13:18,390 INFO L226 Difference]: Without dead ends: 327 [2021-11-05 13:13:18,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 4041.14ms TimeCoverageRelationStatistics Valid=218, Invalid=972, Unknown=0, NotChecked=0, Total=1190 [2021-11-05 13:13:18,391 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 397 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 83 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23517.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 2151 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.95ms SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25105.11ms IncrementalHoareTripleChecker+Time [2021-11-05 13:13:18,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 2151 Invalid, 1141 Unknown, 0 Unchecked, 14.95ms Time], IncrementalHoareTripleChecker [83 Valid, 1048 Invalid, 10 Unknown, 0 Unchecked, 25105.11ms Time] [2021-11-05 13:13:18,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-11-05 13:13:18,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 275. [2021-11-05 13:13:18,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 271 states have (on average 1.151291512915129) internal successors, (312), 274 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:13:18,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 312 transitions. [2021-11-05 13:13:18,402 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 312 transitions. Word has length 57 [2021-11-05 13:13:18,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:13:18,403 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 312 transitions. [2021-11-05 13:13:18,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:13:18,403 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 312 transitions. [2021-11-05 13:13:18,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-05 13:13:18,404 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:13:18,404 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:13:18,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 13:13:18,404 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:13:18,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:13:18,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1205998898, now seen corresponding path program 1 times [2021-11-05 13:13:18,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:13:18,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432966728] [2021-11-05 13:13:18,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:13:18,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:13:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:13:19,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:13:19,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:13:19,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432966728] [2021-11-05 13:13:19,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432966728] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:13:19,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:13:19,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 13:13:19,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242835231] [2021-11-05 13:13:19,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:13:19,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 13:13:19,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:13:19,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 13:13:19,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-05 13:13:19,146 INFO L87 Difference]: Start difference. First operand 275 states and 312 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:13:21,186 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:13:23,365 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:13:25,540 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:13:27,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:13:27,557 INFO L93 Difference]: Finished difference Result 354 states and 396 transitions. [2021-11-05 13:13:27,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-05 13:13:27,558 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2021-11-05 13:13:27,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:13:27,559 INFO L225 Difference]: With dead ends: 354 [2021-11-05 13:13:27,559 INFO L226 Difference]: Without dead ends: 345 [2021-11-05 13:13:27,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1070.89ms TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2021-11-05 13:13:27,560 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 454 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 12 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7004.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.07ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7616.20ms IncrementalHoareTripleChecker+Time [2021-11-05 13:13:27,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [454 Valid, 1258 Invalid, 315 Unknown, 0 Unchecked, 6.07ms Time], IncrementalHoareTripleChecker [12 Valid, 300 Invalid, 3 Unknown, 0 Unchecked, 7616.20ms Time] [2021-11-05 13:13:27,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-11-05 13:13:27,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 323. [2021-11-05 13:13:27,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 319 states have (on average 1.1598746081504703) internal successors, (370), 322 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:13:27,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 370 transitions. [2021-11-05 13:13:27,575 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 370 transitions. Word has length 58 [2021-11-05 13:13:27,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:13:27,577 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 370 transitions. [2021-11-05 13:13:27,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:13:27,577 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 370 transitions. [2021-11-05 13:13:27,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-05 13:13:27,578 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:13:27,578 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:13:27,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 13:13:27,578 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:13:27,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:13:27,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1380900098, now seen corresponding path program 1 times [2021-11-05 13:13:27,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:13:27,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512072988] [2021-11-05 13:13:27,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:13:27,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:13:28,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:13:28,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:13:28,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:13:28,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512072988] [2021-11-05 13:13:28,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512072988] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:13:28,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:13:28,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:13:28,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43597801] [2021-11-05 13:13:28,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:13:28,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:13:28,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:13:28,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:13:28,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:13:28,320 INFO L87 Difference]: Start difference. First operand 323 states and 370 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:13:28,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:13:28,549 INFO L93 Difference]: Finished difference Result 610 states and 695 transitions. [2021-11-05 13:13:28,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 13:13:28,550 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 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 [2021-11-05 13:13:28,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:13:28,551 INFO L225 Difference]: With dead ends: 610 [2021-11-05 13:13:28,552 INFO L226 Difference]: Without dead ends: 323 [2021-11-05 13:13:28,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.39ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:13:28,553 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 4 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 165.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.99ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 183.35ms IncrementalHoareTripleChecker+Time [2021-11-05 13:13:28,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 486 Invalid, 59 Unknown, 0 Unchecked, 0.99ms Time], IncrementalHoareTripleChecker [13 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 183.35ms Time] [2021-11-05 13:13:28,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-11-05 13:13:28,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 314. [2021-11-05 13:13:28,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 310 states have (on average 1.1161290322580646) internal successors, (346), 313 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:13:28,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 346 transitions. [2021-11-05 13:13:28,581 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 346 transitions. Word has length 60 [2021-11-05 13:13:28,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:13:28,581 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 346 transitions. [2021-11-05 13:13:28,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:13:28,582 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 346 transitions. [2021-11-05 13:13:28,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-05 13:13:28,582 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:13:28,582 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:13:28,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 13:13:28,583 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:13:28,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:13:28,583 INFO L85 PathProgramCache]: Analyzing trace with hash 778166894, now seen corresponding path program 1 times [2021-11-05 13:13:28,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:13:28,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336019664] [2021-11-05 13:13:28,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:13:28,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:13:28,638 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:13:28,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1497838965] [2021-11-05 13:13:28,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:13:28,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:13:28,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:13:28,640 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) [2021-11-05 13:13:28,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 13:13:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:13:31,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 2717 conjuncts, 156 conjunts are in the unsatisfiable core [2021-11-05 13:13:31,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:13:32,173 INFO L354 Elim1Store]: treesize reduction 117, result has 12.0 percent of original size [2021-11-05 13:13:32,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 55 treesize of output 54 [2021-11-05 13:13:34,542 INFO L354 Elim1Store]: treesize reduction 368, result has 14.6 percent of original size [2021-11-05 13:13:34,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 80 treesize of output 121 [2021-11-05 13:13:37,146 INFO L354 Elim1Store]: treesize reduction 274, result has 11.6 percent of original size [2021-11-05 13:13:37,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 29 case distinctions, treesize of input 83 treesize of output 101 [2021-11-05 13:13:39,495 INFO L354 Elim1Store]: treesize reduction 224, result has 13.5 percent of original size [2021-11-05 13:13:39,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 24 case distinctions, treesize of input 90 treesize of output 109 [2021-11-05 13:13:41,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:13:41,955 INFO L354 Elim1Store]: treesize reduction 188, result has 27.4 percent of original size [2021-11-05 13:13:41,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 5 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 24 case distinctions, treesize of input 74 treesize of output 134 [2021-11-05 13:13:44,308 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 147 treesize of output 143 [2021-11-05 13:13:44,578 INFO L354 Elim1Store]: treesize reduction 346, result has 12.2 percent of original size [2021-11-05 13:13:44,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 34 case distinctions, treesize of input 156 treesize of output 182 [2021-11-05 13:14:25,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:14:26,752 INFO L354 Elim1Store]: treesize reduction 852, result has 14.7 percent of original size [2021-11-05 13:14:26,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 4 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 65 case distinctions, treesize of input 164 treesize of output 277 [2021-11-05 13:14:52,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 199 treesize of output 159 [2021-11-05 13:15:34,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:15:35,212 INFO L354 Elim1Store]: treesize reduction 678, result has 8.1 percent of original size [2021-11-05 13:15:35,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 12 select indices, 12 select index equivalence classes, 8 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 70 case distinctions, treesize of input 203 treesize of output 233 [2021-11-05 13:16:03,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 199 treesize of output 159 [2021-11-05 13:16:47,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:16:47,871 INFO L354 Elim1Store]: treesize reduction 536, result has 17.7 percent of original size [2021-11-05 13:16:47,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 5 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 61 case distinctions, treesize of input 210 treesize of output 297 [2021-11-05 13:18:00,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:18:01,315 INFO L354 Elim1Store]: treesize reduction 548, result has 17.8 percent of original size [2021-11-05 13:18:01,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 3 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 63 case distinctions, treesize of input 185 treesize of output 276 [2021-11-05 13:18:30,792 INFO L354 Elim1Store]: treesize reduction 124, result has 19.0 percent of original size [2021-11-05 13:18:30,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 277 treesize of output 215 [2021-11-05 13:18:31,722 INFO L354 Elim1Store]: treesize reduction 400, result has 30.2 percent of original size [2021-11-05 13:18:31,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 238 treesize of output 382 [2021-11-05 13:18:32,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 34 [2021-11-05 13:18:34,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:18:34,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:18:34,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:18:34,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336019664] [2021-11-05 13:18:34,113 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:18:34,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497838965] [2021-11-05 13:18:34,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497838965] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:18:34,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:18:34,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-05 13:18:34,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796306501] [2021-11-05 13:18:34,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:18:34,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-05 13:18:34,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:18:34,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-05 13:18:34,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=405, Unknown=1, NotChecked=0, Total=462 [2021-11-05 13:18:34,114 INFO L87 Difference]: Start difference. First operand 314 states and 346 transitions. Second operand has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:18:34,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:18:34,413 INFO L93 Difference]: Finished difference Result 339 states and 372 transitions. [2021-11-05 13:18:34,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-05 13:18:34,413 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-05 13:18:34,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:18:34,414 INFO L225 Difference]: With dead ends: 339 [2021-11-05 13:18:34,414 INFO L226 Difference]: Without dead ends: 330 [2021-11-05 13:18:34,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 11303.53ms TimeCoverageRelationStatistics Valid=60, Invalid=445, Unknown=1, NotChecked=0, Total=506 [2021-11-05 13:18:34,417 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 60 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 98.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1928 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.90ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 325 IncrementalHoareTripleChecker+Unchecked, 106.51ms IncrementalHoareTripleChecker+Time [2021-11-05 13:18:34,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 1928 Invalid, 353 Unknown, 0 Unchecked, 4.90ms Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 325 Unchecked, 106.51ms Time] [2021-11-05 13:18:34,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-11-05 13:18:34,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 300. [2021-11-05 13:18:34,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 296 states have (on average 1.114864864864865) internal successors, (330), 299 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:18:34,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 330 transitions. [2021-11-05 13:18:34,432 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 330 transitions. Word has length 63 [2021-11-05 13:18:34,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:18:34,432 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 330 transitions. [2021-11-05 13:18:34,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:18:34,433 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 330 transitions. [2021-11-05 13:18:34,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-05 13:18:34,437 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:18:34,437 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:18:34,482 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-05 13:18:34,640 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 [2021-11-05 13:18:34,640 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:18:34,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:18:34,641 INFO L85 PathProgramCache]: Analyzing trace with hash -135931354, now seen corresponding path program 1 times [2021-11-05 13:18:34,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:18:34,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128726066] [2021-11-05 13:18:34,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:18:34,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:18:34,699 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:18:34,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [806249242] [2021-11-05 13:18:34,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:18:34,700 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:18:34,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:18:34,701 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) [2021-11-05 13:18:34,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-05 13:18:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:18:38,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 2719 conjuncts, 120 conjunts are in the unsatisfiable core [2021-11-05 13:18:38,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:18:38,474 INFO L354 Elim1Store]: treesize reduction 93, result has 14.7 percent of original size [2021-11-05 13:18:38,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 32 [2021-11-05 13:18:39,744 INFO L354 Elim1Store]: treesize reduction 287, result has 14.8 percent of original size [2021-11-05 13:18:39,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 22 case distinctions, treesize of input 63 treesize of output 93 [2021-11-05 13:18:41,104 INFO L354 Elim1Store]: treesize reduction 212, result has 12.8 percent of original size [2021-11-05 13:18:41,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 5 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 58 treesize of output 73 [2021-11-05 13:18:42,159 INFO L354 Elim1Store]: treesize reduction 170, result has 15.0 percent of original size [2021-11-05 13:18:42,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 18 case distinctions, treesize of input 65 treesize of output 81 [2021-11-05 13:18:43,563 INFO L354 Elim1Store]: treesize reduction 148, result has 32.4 percent of original size [2021-11-05 13:18:43,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 53 treesize of output 110 [2021-11-05 13:18:45,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 117 [2021-11-05 13:18:45,292 INFO L354 Elim1Store]: treesize reduction 280, result has 13.3 percent of original size [2021-11-05 13:18:45,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 27 case distinctions, treesize of input 126 treesize of output 149 [2021-11-05 13:19:11,129 INFO L354 Elim1Store]: treesize reduction 224, result has 30.2 percent of original size [2021-11-05 13:19:11,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 122 treesize of output 196 [2021-11-05 13:19:11,666 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-05 13:19:11,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 24 [2021-11-05 13:19:12,043 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-05 13:19:12,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 20 [2021-11-05 13:19:12,702 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-05 13:19:12,877 INFO L354 Elim1Store]: treesize reduction 100, result has 27.0 percent of original size [2021-11-05 13:19:12,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 101 treesize of output 75 [2021-11-05 13:19:13,207 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 15 treesize of output 11 [2021-11-05 13:19:13,418 INFO L354 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2021-11-05 13:19:13,418 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 41 [2021-11-05 13:19:16,482 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2021-11-05 13:19:16,483 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 63 [2021-11-05 13:19:16,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:19:16,782 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:19:16,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:19:16,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128726066] [2021-11-05 13:19:16,782 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:19:16,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806249242] [2021-11-05 13:19:16,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806249242] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:19:16,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:19:16,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-05 13:19:16,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430842989] [2021-11-05 13:19:16,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:19:16,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-05 13:19:16,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:19:16,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-05 13:19:16,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=290, Unknown=1, NotChecked=0, Total=342 [2021-11-05 13:19:16,784 INFO L87 Difference]: Start difference. First operand 300 states and 330 transitions. Second operand has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:19:18,829 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:19:21,054 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:19:23,242 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:19:25,358 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:19:26,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:19:26,976 INFO L93 Difference]: Finished difference Result 326 states and 356 transitions. [2021-11-05 13:19:26,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-05 13:19:26,977 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-05 13:19:26,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:19:26,978 INFO L225 Difference]: With dead ends: 326 [2021-11-05 13:19:26,978 INFO L226 Difference]: Without dead ends: 317 [2021-11-05 13:19:26,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 4627.77ms TimeCoverageRelationStatistics Valid=79, Invalid=426, Unknown=1, NotChecked=0, Total=506 [2021-11-05 13:19:26,979 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 111 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 7 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8795.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 1822 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.21ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 207 IncrementalHoareTripleChecker+Unchecked, 9526.18ms IncrementalHoareTripleChecker+Time [2021-11-05 13:19:26,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 1822 Invalid, 434 Unknown, 0 Unchecked, 7.21ms Time], IncrementalHoareTripleChecker [7 Valid, 216 Invalid, 4 Unknown, 207 Unchecked, 9526.18ms Time] [2021-11-05 13:19:26,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-11-05 13:19:26,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 286. [2021-11-05 13:19:26,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 282 states have (on average 1.1134751773049645) internal successors, (314), 285 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:19:26,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 314 transitions. [2021-11-05 13:19:26,996 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 314 transitions. Word has length 64 [2021-11-05 13:19:26,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:19:26,996 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 314 transitions. [2021-11-05 13:19:26,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 19 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:19:26,997 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 314 transitions. [2021-11-05 13:19:26,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-05 13:19:26,997 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:19:26,997 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:19:27,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-05 13:19:27,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:19:27,212 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-05 13:19:27,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:19:27,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1693179918, now seen corresponding path program 1 times [2021-11-05 13:19:27,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:19:27,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137553086] [2021-11-05 13:19:27,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:19:27,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:19:27,272 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:19:27,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [19352979] [2021-11-05 13:19:27,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:19:27,273 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:19:27,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:19:27,274 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) [2021-11-05 13:19:27,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process Killed by 15