./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_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 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-03 23:41:59,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 23:41:59,421 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 23:41:59,461 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 23:41:59,462 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 23:41:59,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 23:41:59,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 23:41:59,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 23:41:59,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 23:41:59,481 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 23:41:59,481 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 23:41:59,482 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 23:41:59,482 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 23:41:59,484 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 23:41:59,485 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 23:41:59,488 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 23:41:59,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 23:41:59,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 23:41:59,491 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 23:41:59,495 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 23:41:59,496 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 23:41:59,497 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 23:41:59,498 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 23:41:59,498 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 23:41:59,503 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 23:41:59,503 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 23:41:59,503 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 23:41:59,504 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 23:41:59,505 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 23:41:59,505 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 23:41:59,505 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 23:41:59,506 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 23:41:59,507 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 23:41:59,508 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 23:41:59,509 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 23:41:59,509 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 23:41:59,509 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 23:41:59,509 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 23:41:59,510 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 23:41:59,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 23:41:59,511 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 23:41:59,512 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-03 23:41:59,535 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 23:41:59,535 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 23:41:59,536 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 23:41:59,536 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 23:41:59,537 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 23:41:59,537 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 23:41:59,537 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 23:41:59,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 23:41:59,538 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 23:41:59,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 23:41:59,538 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 23:41:59,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 23:41:59,539 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 23:41:59,539 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 23:41:59,539 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 23:41:59,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 23:41:59,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 23:41:59,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 23:41:59,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 23:41:59,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 23:41:59,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 23:41:59,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 23:41:59,540 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 23:41:59,540 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-03 23:41:59,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 23:41:59,541 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 23:41:59,541 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 23:41:59,542 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 23:41:59,542 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 23:41:59,542 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 [2021-11-03 23:41:59,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 23:41:59,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 23:41:59,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 23:41:59,762 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 23:41:59,763 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 23:41:59,764 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2021-11-03 23:41:59,814 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d4a3ea24/8b7875b4c343478093a3078bc2531dca/FLAGad47149fb [2021-11-03 23:42:00,410 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 23:42:00,410 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2021-11-03 23:42:00,435 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d4a3ea24/8b7875b4c343478093a3078bc2531dca/FLAGad47149fb [2021-11-03 23:42:00,839 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d4a3ea24/8b7875b4c343478093a3078bc2531dca [2021-11-03 23:42:00,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 23:42:00,842 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 23:42:00,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 23:42:00,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 23:42:00,846 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 23:42:00,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 11:42:00" (1/1) ... [2021-11-03 23:42:00,847 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d31e684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:42:00, skipping insertion in model container [2021-11-03 23:42:00,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 11:42:00" (1/1) ... [2021-11-03 23:42:00,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 23:42:00,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 23:42:01,157 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_priority_queue_s_sift_down_harness.i[4504,4517] [2021-11-03 23:42:01,162 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_priority_queue_s_sift_down_harness.i[4564,4577] [2021-11-03 23:42:01,172 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 23:42:01,176 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 23:42:01,605 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:01,606 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:01,606 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:01,607 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:01,607 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:01,616 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:01,617 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:01,618 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:01,618 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:01,619 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:01,620 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:01,620 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:01,621 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:01,813 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 23:42:01,814 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 23:42:01,814 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 23:42:01,815 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 23:42:01,816 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 23:42:01,816 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 23:42:01,817 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 23:42:01,817 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 23:42:01,818 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 23:42:01,818 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 23:42:01,896 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 23:42:01,910 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:01,910 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:01,913 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:01,916 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:01,966 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:01,966 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:01,967 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,011 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,013 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,013 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,014 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,014 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,014 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,015 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,015 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,015 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,015 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,038 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,038 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,039 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,039 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,044 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,044 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,054 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,055 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,055 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 23:42:02,105 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 23:42:02,127 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_priority_queue_s_sift_down_harness.i[4504,4517] [2021-11-03 23:42:02,127 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_priority_queue_s_sift_down_harness.i[4564,4577] [2021-11-03 23:42:02,128 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 23:42:02,129 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 23:42:02,152 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,153 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,153 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,153 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,154 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,159 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,160 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,160 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,161 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,161 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,161 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,162 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,162 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,194 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 23:42:02,194 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 23:42:02,195 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 23:42:02,195 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 23:42:02,196 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 23:42:02,196 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 23:42:02,197 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 23:42:02,197 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 23:42:02,197 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 23:42:02,198 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 23:42:02,222 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 23:42:02,235 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,236 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,236 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,242 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,259 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,260 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,260 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,260 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,260 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,261 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,261 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,261 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,262 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,262 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,263 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,263 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,264 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,265 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,265 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,265 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,266 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,267 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,267 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,271 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,271 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,271 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:42:02,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 23:42:02,422 INFO L208 MainTranslator]: Completed translation [2021-11-03 23:42:02,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:42:02 WrapperNode [2021-11-03 23:42:02,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 23:42:02,423 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 23:42:02,423 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 23:42:02,423 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 23:42:02,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:42:02" (1/1) ... [2021-11-03 23:42:02,508 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:42:02" (1/1) ... [2021-11-03 23:42:02,642 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 23:42:02,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 23:42:02,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 23:42:02,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 23:42:02,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:42:02" (1/1) ... [2021-11-03 23:42:02,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:42:02" (1/1) ... [2021-11-03 23:42:02,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:42:02" (1/1) ... [2021-11-03 23:42:02,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:42:02" (1/1) ... [2021-11-03 23:42:02,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:42:02" (1/1) ... [2021-11-03 23:42:02,812 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:42:02" (1/1) ... [2021-11-03 23:42:02,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:42:02" (1/1) ... [2021-11-03 23:42:02,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 23:42:02,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 23:42:02,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 23:42:02,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 23:42:02,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:42:02" (1/1) ... [2021-11-03 23:42:02,858 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 23:42:02,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:42:02,874 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 23:42:02,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 23:42:02,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 23:42:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 23:42:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 23:42:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 23:42:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 23:42:02,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 23:42:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 23:42:02,904 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-03 23:42:02,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 23:42:02,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 23:42:02,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 23:42:02,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 23:42:07,080 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 23:42:07,080 INFO L299 CfgBuilder]: Removed 924 assume(true) statements. [2021-11-03 23:42:07,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 11:42:07 BoogieIcfgContainer [2021-11-03 23:42:07,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 23:42:07,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 23:42:07,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 23:42:07,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 23:42:07,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 11:42:00" (1/3) ... [2021-11-03 23:42:07,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a0ca144 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 11:42:07, skipping insertion in model container [2021-11-03 23:42:07,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:42:02" (2/3) ... [2021-11-03 23:42:07,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a0ca144 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 11:42:07, skipping insertion in model container [2021-11-03 23:42:07,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 11:42:07" (3/3) ... [2021-11-03 23:42:07,095 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_down_harness.i [2021-11-03 23:42:07,103 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 23:42:07,104 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2021-11-03 23:42:07,146 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 23:42:07,153 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 23:42:07,153 INFO L340 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2021-11-03 23:42:07,178 INFO L276 IsEmpty]: Start isEmpty. Operand has 1139 states, 1108 states have (on average 1.4214801444043321) internal successors, (1575), 1138 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:42:07,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-03 23:42:07,183 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:42:07,184 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:42:07,184 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-03 23:42:07,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:42:07,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1715157979, now seen corresponding path program 1 times [2021-11-03 23:42:07,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:42:07,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164204679] [2021-11-03 23:42:07,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:42:07,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:42:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:42:07,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:42:07,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:42:07,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164204679] [2021-11-03 23:42:07,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164204679] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:42:07,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:42:07,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 23:42:07,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463764214] [2021-11-03 23:42:07,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:42:07,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 23:42:07,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:42:07,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 23:42:07,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 23:42:07,739 INFO L87 Difference]: Start difference. First operand has 1139 states, 1108 states have (on average 1.4214801444043321) internal successors, (1575), 1138 states have internal predecessors, (1575), 0 states have call successors, (0), 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 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:42:09,798 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:42:14,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:42:14,256 INFO L93 Difference]: Finished difference Result 2266 states and 3137 transitions. [2021-11-03 23:42:14,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 23:42:14,258 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-03 23:42:14,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:42:14,270 INFO L225 Difference]: With dead ends: 2266 [2021-11-03 23:42:14,271 INFO L226 Difference]: Without dead ends: 1134 [2021-11-03 23:42:14,275 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 [2021-11-03 23:42:14,279 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1462 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5781.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.40ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1462 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6344.57ms IncrementalHoareTripleChecker+Time [2021-11-03 23:42:14,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1463 Unknown, 0 Unchecked, 11.40ms Time], IncrementalHoareTripleChecker [0 Valid, 1462 Invalid, 1 Unknown, 0 Unchecked, 6344.57ms Time] [2021-11-03 23:42:14,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2021-11-03 23:42:14,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1134. [2021-11-03 23:42:14,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1134 states, 1104 states have (on average 1.3206521739130435) internal successors, (1458), 1133 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:42:14,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1458 transitions. [2021-11-03 23:42:14,332 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1458 transitions. Word has length 53 [2021-11-03 23:42:14,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:42:14,332 INFO L470 AbstractCegarLoop]: Abstraction has 1134 states and 1458 transitions. [2021-11-03 23:42:14,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:42:14,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1458 transitions. [2021-11-03 23:42:14,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-03 23:42:14,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:42:14,334 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:42:14,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 23:42:14,334 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-03 23:42:14,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:42:14,335 INFO L85 PathProgramCache]: Analyzing trace with hash -799846195, now seen corresponding path program 1 times [2021-11-03 23:42:14,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:42:14,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609111805] [2021-11-03 23:42:14,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:42:14,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:42:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:42:14,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:42:14,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:42:14,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609111805] [2021-11-03 23:42:14,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609111805] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:42:14,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:42:14,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 23:42:14,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166679852] [2021-11-03 23:42:14,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:42:14,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 23:42:14,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:42:14,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 23:42:14,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 23:42:14,545 INFO L87 Difference]: Start difference. First operand 1134 states and 1458 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:42:16,584 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 [] [2021-11-03 23:42:24,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:42:24,755 INFO L93 Difference]: Finished difference Result 2248 states and 2895 transitions. [2021-11-03 23:42:24,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 23:42:24,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-03 23:42:24,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:42:24,760 INFO L225 Difference]: With dead ends: 2248 [2021-11-03 23:42:24,760 INFO L226 Difference]: Without dead ends: 1136 [2021-11-03 23:42:24,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.55ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 23:42:24,762 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 1447 mSDsCounter, 0 mSdLazyCounter, 2914 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9295.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.45ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2914 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10001.06ms IncrementalHoareTripleChecker+Time [2021-11-03 23:42:24,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 2917 Unknown, 0 Unchecked, 26.45ms Time], IncrementalHoareTripleChecker [2 Valid, 2914 Invalid, 1 Unknown, 0 Unchecked, 10001.06ms Time] [2021-11-03 23:42:24,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2021-11-03 23:42:24,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 1136. [2021-11-03 23:42:24,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1106 states have (on average 1.3200723327305606) internal successors, (1460), 1135 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:42:24,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1460 transitions. [2021-11-03 23:42:24,787 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1460 transitions. Word has length 53 [2021-11-03 23:42:24,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:42:24,788 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 1460 transitions. [2021-11-03 23:42:24,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:42:24,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1460 transitions. [2021-11-03 23:42:24,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-03 23:42:24,794 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:42:24,794 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:42:24,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 23:42:24,795 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-03 23:42:24,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:42:24,796 INFO L85 PathProgramCache]: Analyzing trace with hash 571961103, now seen corresponding path program 1 times [2021-11-03 23:42:24,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:42:24,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380857388] [2021-11-03 23:42:24,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:42:24,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:42:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:42:25,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:42:25,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:42:25,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380857388] [2021-11-03 23:42:25,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380857388] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:42:25,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:42:25,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:42:25,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001194526] [2021-11-03 23:42:25,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:42:25,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:42:25,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:42:25,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:42:25,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:42:25,104 INFO L87 Difference]: Start difference. First operand 1136 states and 1460 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:42:27,151 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 [] [2021-11-03 23:42:35,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:42:35,521 INFO L93 Difference]: Finished difference Result 2503 states and 3212 transitions. [2021-11-03 23:42:35,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 23:42:35,521 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-03 23:42:35,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:42:35,525 INFO L225 Difference]: With dead ends: 2503 [2021-11-03 23:42:35,526 INFO L226 Difference]: Without dead ends: 1455 [2021-11-03 23:42:35,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.77ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:42:35,528 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1833 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 2609 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9438.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1833 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.07ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2609 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10188.01ms IncrementalHoareTripleChecker+Time [2021-11-03 23:42:35,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1833 Valid, 0 Invalid, 2614 Unknown, 0 Unchecked, 24.07ms Time], IncrementalHoareTripleChecker [4 Valid, 2609 Invalid, 1 Unknown, 0 Unchecked, 10188.01ms Time] [2021-11-03 23:42:35,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2021-11-03 23:42:35,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1136. [2021-11-03 23:42:35,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1106 states have (on average 1.317359855334539) internal successors, (1457), 1135 states have internal predecessors, (1457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:42:35,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1457 transitions. [2021-11-03 23:42:35,549 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1457 transitions. Word has length 53 [2021-11-03 23:42:35,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:42:35,550 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 1457 transitions. [2021-11-03 23:42:35,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:42:35,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1457 transitions. [2021-11-03 23:42:35,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-03 23:42:35,551 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:42:35,551 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:42:35,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 23:42:35,551 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-03 23:42:35,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:42:35,552 INFO L85 PathProgramCache]: Analyzing trace with hash 834729775, now seen corresponding path program 1 times [2021-11-03 23:42:35,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:42:35,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227170908] [2021-11-03 23:42:35,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:42:35,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:42:35,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:42:35,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:42:35,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:42:35,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227170908] [2021-11-03 23:42:35,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227170908] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:42:35,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:42:35,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 23:42:35,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136658940] [2021-11-03 23:42:35,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:42:35,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 23:42:35,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:42:35,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 23:42:35,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:42:35,837 INFO L87 Difference]: Start difference. First operand 1136 states and 1457 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:42:37,876 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 [] [2021-11-03 23:42:49,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:42:49,849 INFO L93 Difference]: Finished difference Result 3002 states and 3827 transitions. [2021-11-03 23:42:49,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 23:42:49,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-03 23:42:49,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:42:49,855 INFO L225 Difference]: With dead ends: 3002 [2021-11-03 23:42:49,855 INFO L226 Difference]: Without dead ends: 1922 [2021-11-03 23:42:49,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 113.35ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 23:42:49,858 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3790 mSDsluCounter, 2013 mSDsCounter, 0 mSdLazyCounter, 3755 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12688.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3790 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 68.44ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3755 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13619.64ms IncrementalHoareTripleChecker+Time [2021-11-03 23:42:49,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3790 Valid, 0 Invalid, 3770 Unknown, 0 Unchecked, 68.44ms Time], IncrementalHoareTripleChecker [14 Valid, 3755 Invalid, 1 Unknown, 0 Unchecked, 13619.64ms Time] [2021-11-03 23:42:49,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1922 states. [2021-11-03 23:42:49,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1922 to 1136. [2021-11-03 23:42:49,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1106 states have (on average 1.3146473779385173) internal successors, (1454), 1135 states have internal predecessors, (1454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:42:49,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1454 transitions. [2021-11-03 23:42:49,882 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1454 transitions. Word has length 61 [2021-11-03 23:42:49,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:42:49,883 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 1454 transitions. [2021-11-03 23:42:49,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:42:49,883 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1454 transitions. [2021-11-03 23:42:49,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-03 23:42:49,884 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:42:49,884 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:42:49,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 23:42:49,884 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-03 23:42:49,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:42:49,885 INFO L85 PathProgramCache]: Analyzing trace with hash -2045544657, now seen corresponding path program 1 times [2021-11-03 23:42:49,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:42:49,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366907462] [2021-11-03 23:42:49,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:42:49,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:42:49,943 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:42:49,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2021789708] [2021-11-03 23:42:49,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:42:49,944 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:42:49,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:42:49,945 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:42:49,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 23:42:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:42:50,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 2697 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 23:42:50,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:42:51,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:42:51,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:42:51,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:42:51,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366907462] [2021-11-03 23:42:51,177 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:42:51,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021789708] [2021-11-03 23:42:51,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021789708] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:42:51,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:42:51,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 23:42:51,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480859710] [2021-11-03 23:42:51,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:42:51,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 23:42:51,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:42:51,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 23:42:51,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 23:42:51,182 INFO L87 Difference]: Start difference. First operand 1136 states and 1454 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:42:53,247 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 [] [2021-11-03 23:43:05,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:43:05,967 INFO L93 Difference]: Finished difference Result 3297 states and 4202 transitions. [2021-11-03 23:43:05,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 23:43:05,968 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-03 23:43:05,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:43:05,975 INFO L225 Difference]: With dead ends: 3297 [2021-11-03 23:43:05,976 INFO L226 Difference]: Without dead ends: 2248 [2021-11-03 23:43:05,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 208.08ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-03 23:43:05,979 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 8025 mSDsluCounter, 2209 mSDsCounter, 0 mSdLazyCounter, 3796 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13200.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8025 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 56.64ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3796 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14279.92ms IncrementalHoareTripleChecker+Time [2021-11-03 23:43:05,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8025 Valid, 0 Invalid, 3814 Unknown, 0 Unchecked, 56.64ms Time], IncrementalHoareTripleChecker [17 Valid, 3796 Invalid, 1 Unknown, 0 Unchecked, 14279.92ms Time] [2021-11-03 23:43:05,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2248 states. [2021-11-03 23:43:06,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2248 to 1136. [2021-11-03 23:43:06,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1106 states have (on average 1.3119349005424954) internal successors, (1451), 1135 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:43:06,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1451 transitions. [2021-11-03 23:43:06,028 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1451 transitions. Word has length 77 [2021-11-03 23:43:06,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:43:06,028 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 1451 transitions. [2021-11-03 23:43:06,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:43:06,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1451 transitions. [2021-11-03 23:43:06,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-03 23:43:06,029 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:43:06,029 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:43:06,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-03 23:43:06,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:43:06,246 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-03 23:43:06,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:43:06,246 INFO L85 PathProgramCache]: Analyzing trace with hash 324665997, now seen corresponding path program 1 times [2021-11-03 23:43:06,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:43:06,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200437825] [2021-11-03 23:43:06,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:43:06,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:43:06,313 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:43:06,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1034423707] [2021-11-03 23:43:06,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:43:06,314 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:43:06,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:43:06,328 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:43:06,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 23:43:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:43:07,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 2802 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 23:43:07,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:43:07,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:43:07,696 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:43:07,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:43:07,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200437825] [2021-11-03 23:43:07,696 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:43:07,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034423707] [2021-11-03 23:43:07,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034423707] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:43:07,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:43:07,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 23:43:07,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020755852] [2021-11-03 23:43:07,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:43:07,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 23:43:07,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:43:07,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 23:43:07,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 23:43:07,698 INFO L87 Difference]: Start difference. First operand 1136 states and 1451 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:43:09,737 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 [] [2021-11-03 23:43:25,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:43:25,743 INFO L93 Difference]: Finished difference Result 3313 states and 4220 transitions. [2021-11-03 23:43:25,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 23:43:25,744 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-03 23:43:25,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:43:25,749 INFO L225 Difference]: With dead ends: 3313 [2021-11-03 23:43:25,749 INFO L226 Difference]: Without dead ends: 2248 [2021-11-03 23:43:25,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 315.83ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-11-03 23:43:25,751 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 8248 mSDsluCounter, 3101 mSDsCounter, 0 mSdLazyCounter, 4996 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16133.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8248 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 55.37ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 4996 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17487.20ms IncrementalHoareTripleChecker+Time [2021-11-03 23:43:25,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8248 Valid, 0 Invalid, 5039 Unknown, 0 Unchecked, 55.37ms Time], IncrementalHoareTripleChecker [42 Valid, 4996 Invalid, 1 Unknown, 0 Unchecked, 17487.20ms Time] [2021-11-03 23:43:25,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2248 states. [2021-11-03 23:43:25,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2248 to 1136. [2021-11-03 23:43:25,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1106 states have (on average 1.3092224231464737) internal successors, (1448), 1135 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:43:25,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1448 transitions. [2021-11-03 23:43:25,780 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1448 transitions. Word has length 101 [2021-11-03 23:43:25,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:43:25,780 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 1448 transitions. [2021-11-03 23:43:25,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:43:25,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1448 transitions. [2021-11-03 23:43:25,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-03 23:43:25,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:43:25,781 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:43:25,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 23:43:25,995 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,SelfDestructingSolverStorable5 [2021-11-03 23:43:25,996 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-03 23:43:25,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:43:25,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1191929715, now seen corresponding path program 1 times [2021-11-03 23:43:25,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:43:25,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057823431] [2021-11-03 23:43:25,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:43:25,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:43:26,052 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:43:26,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [469956848] [2021-11-03 23:43:26,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:43:26,053 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:43:26,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:43:26,054 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:43:26,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 23:43:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:43:26,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 2992 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 23:43:26,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:43:27,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:43:27,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:43:27,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:43:27,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057823431] [2021-11-03 23:43:27,610 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:43:27,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469956848] [2021-11-03 23:43:27,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469956848] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:43:27,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:43:27,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 23:43:27,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053748820] [2021-11-03 23:43:27,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:43:27,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 23:43:27,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:43:27,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 23:43:27,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 23:43:27,612 INFO L87 Difference]: Start difference. First operand 1136 states and 1448 transitions. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:43:29,972 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:43:42,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:43:42,849 INFO L93 Difference]: Finished difference Result 2246 states and 2871 transitions. [2021-11-03 23:43:42,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 23:43:42,850 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-11-03 23:43:42,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:43:42,854 INFO L225 Difference]: With dead ends: 2246 [2021-11-03 23:43:42,854 INFO L226 Difference]: Without dead ends: 1284 [2021-11-03 23:43:42,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 188.88ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-03 23:43:42,856 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3419 mSDsluCounter, 2447 mSDsCounter, 0 mSdLazyCounter, 4272 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13787.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3419 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.44ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 4272 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14894.07ms IncrementalHoareTripleChecker+Time [2021-11-03 23:43:42,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3419 Valid, 0 Invalid, 4289 Unknown, 0 Unchecked, 37.44ms Time], IncrementalHoareTripleChecker [16 Valid, 4272 Invalid, 1 Unknown, 0 Unchecked, 14894.07ms Time] [2021-11-03 23:43:42,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2021-11-03 23:43:42,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1136. [2021-11-03 23:43:42,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1106 states have (on average 1.3047016274864376) internal successors, (1443), 1135 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:43:42,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1443 transitions. [2021-11-03 23:43:42,881 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1443 transitions. Word has length 117 [2021-11-03 23:43:42,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:43:42,882 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 1443 transitions. [2021-11-03 23:43:42,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:43:42,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1443 transitions. [2021-11-03 23:43:42,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-03 23:43:42,883 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:43:42,883 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:43:42,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-03 23:43:43,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:43:43,106 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-03 23:43:43,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:43:43,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1113366613, now seen corresponding path program 1 times [2021-11-03 23:43:43,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:43:43,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170801824] [2021-11-03 23:43:43,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:43:43,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:43:43,173 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:43:43,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1097130318] [2021-11-03 23:43:43,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:43:43,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:43:43,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:43:43,175 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:43:43,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-03 23:43:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:43:43,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 3182 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 23:43:43,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:43:44,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:43:44,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:43:44,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:43:44,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170801824] [2021-11-03 23:43:44,632 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:43:44,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097130318] [2021-11-03 23:43:44,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097130318] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:43:44,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:43:44,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 23:43:44,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138088132] [2021-11-03 23:43:44,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:43:44,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 23:43:44,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:43:44,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 23:43:44,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 23:43:44,634 INFO L87 Difference]: Start difference. First operand 1136 states and 1443 transitions. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:43:46,675 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 [] [2021-11-03 23:44:18,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:44:18,727 INFO L93 Difference]: Finished difference Result 3108 states and 3945 transitions. [2021-11-03 23:44:18,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 23:44:18,728 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2021-11-03 23:44:18,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:44:18,735 INFO L225 Difference]: With dead ends: 3108 [2021-11-03 23:44:18,735 INFO L226 Difference]: Without dead ends: 2049 [2021-11-03 23:44:18,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 380.83ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-03 23:44:18,737 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1103 mSDsluCounter, 6822 mSDsCounter, 0 mSdLazyCounter, 10989 mSolverCounterSat, 43 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30925.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 70.65ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 10989 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33481.46ms IncrementalHoareTripleChecker+Time [2021-11-03 23:44:18,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1103 Valid, 0 Invalid, 11033 Unknown, 0 Unchecked, 70.65ms Time], IncrementalHoareTripleChecker [43 Valid, 10989 Invalid, 1 Unknown, 0 Unchecked, 33481.46ms Time] [2021-11-03 23:44:18,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2049 states. [2021-11-03 23:44:18,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2049 to 1160. [2021-11-03 23:44:18,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1160 states, 1130 states have (on average 1.3035398230088495) internal successors, (1473), 1159 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:44:18,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1473 transitions. [2021-11-03 23:44:18,770 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1473 transitions. Word has length 133 [2021-11-03 23:44:18,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:44:18,771 INFO L470 AbstractCegarLoop]: Abstraction has 1160 states and 1473 transitions. [2021-11-03 23:44:18,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:44:18,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1473 transitions. [2021-11-03 23:44:18,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-03 23:44:18,772 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:44:18,772 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:44:18,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-03 23:44:18,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:44:18,987 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-03 23:44:18,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:44:18,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1316278763, now seen corresponding path program 1 times [2021-11-03 23:44:18,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:44:18,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179902910] [2021-11-03 23:44:18,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:44:18,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:44:19,049 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:44:19,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1323597648] [2021-11-03 23:44:19,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:44:19,049 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:44:19,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:44:19,050 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:44:19,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-03 23:44:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:44:19,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 3176 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 23:44:19,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:44:20,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:44:20,103 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:44:20,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:44:20,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179902910] [2021-11-03 23:44:20,103 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:44:20,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323597648] [2021-11-03 23:44:20,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323597648] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:44:20,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:44:20,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:44:20,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301343060] [2021-11-03 23:44:20,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:44:20,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:44:20,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:44:20,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:44:20,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:44:20,104 INFO L87 Difference]: Start difference. First operand 1160 states and 1473 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:44:22,141 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 [] [2021-11-03 23:44:34,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:44:34,778 INFO L93 Difference]: Finished difference Result 2261 states and 2874 transitions. [2021-11-03 23:44:34,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 23:44:34,778 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2021-11-03 23:44:34,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:44:34,781 INFO L225 Difference]: With dead ends: 2261 [2021-11-03 23:44:34,781 INFO L226 Difference]: Without dead ends: 1184 [2021-11-03 23:44:34,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.28ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:44:34,783 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 2814 mSDsCounter, 0 mSdLazyCounter, 4308 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13223.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.66ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 4308 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14481.52ms IncrementalHoareTripleChecker+Time [2021-11-03 23:44:34,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 4330 Unknown, 0 Unchecked, 19.66ms Time], IncrementalHoareTripleChecker [21 Valid, 4308 Invalid, 1 Unknown, 0 Unchecked, 14481.52ms Time] [2021-11-03 23:44:34,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2021-11-03 23:44:34,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1172. [2021-11-03 23:44:34,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 1142 states have (on average 1.3003502626970227) internal successors, (1485), 1171 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:44:34,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1485 transitions. [2021-11-03 23:44:34,809 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1485 transitions. Word has length 133 [2021-11-03 23:44:34,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:44:34,809 INFO L470 AbstractCegarLoop]: Abstraction has 1172 states and 1485 transitions. [2021-11-03 23:44:34,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:44:34,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1485 transitions. [2021-11-03 23:44:34,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-03 23:44:34,810 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:44:34,810 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:44:34,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-03 23:44:35,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:44:35,024 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-03 23:44:35,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:44:35,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1076039017, now seen corresponding path program 1 times [2021-11-03 23:44:35,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:44:35,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734830943] [2021-11-03 23:44:35,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:44:35,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:44:35,115 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:44:35,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [716192114] [2021-11-03 23:44:35,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:44:35,116 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:44:35,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:44:35,117 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:44:35,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-03 23:44:36,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:44:36,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 3171 conjuncts, 55 conjunts are in the unsatisfiable core [2021-11-03 23:44:36,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:44:37,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 24 [2021-11-03 23:44:38,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-03 23:44:38,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:44:38,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:44:38,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:44:38,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734830943] [2021-11-03 23:44:38,318 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:44:38,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716192114] [2021-11-03 23:44:38,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716192114] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:44:38,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:44:38,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 23:44:38,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552471018] [2021-11-03 23:44:38,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:44:38,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 23:44:38,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:44:38,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 23:44:38,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-03 23:44:38,319 INFO L87 Difference]: Start difference. First operand 1172 states and 1485 transitions. Second operand has 11 states, 11 states have (on average 12.090909090909092) internal successors, (133), 11 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:44:40,859 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:45:41,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:45:41,058 INFO L93 Difference]: Finished difference Result 7470 states and 9415 transitions. [2021-11-03 23:45:41,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-03 23:45:41,058 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.090909090909092) internal successors, (133), 11 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2021-11-03 23:45:41,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:45:41,075 INFO L225 Difference]: With dead ends: 7470 [2021-11-03 23:45:41,075 INFO L226 Difference]: Without dead ends: 6409 [2021-11-03 23:45:41,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 2077.23ms TimeCoverageRelationStatistics Valid=183, Invalid=467, Unknown=0, NotChecked=0, Total=650 [2021-11-03 23:45:41,077 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 13554 mSDsluCounter, 15383 mSDsCounter, 0 mSdLazyCounter, 20262 mSolverCounterSat, 85 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55686.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13554 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 168.21ms SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 20262 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60104.50ms IncrementalHoareTripleChecker+Time [2021-11-03 23:45:41,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13554 Valid, 0 Invalid, 20348 Unknown, 0 Unchecked, 168.21ms Time], IncrementalHoareTripleChecker [85 Valid, 20262 Invalid, 1 Unknown, 0 Unchecked, 60104.50ms Time] [2021-11-03 23:45:41,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6409 states. [2021-11-03 23:45:41,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6409 to 1189. [2021-11-03 23:45:41,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 1159 states have (on average 1.2985332182916307) internal successors, (1505), 1188 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:45:41,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1505 transitions. [2021-11-03 23:45:41,133 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1505 transitions. Word has length 133 [2021-11-03 23:45:41,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:45:41,133 INFO L470 AbstractCegarLoop]: Abstraction has 1189 states and 1505 transitions. [2021-11-03 23:45:41,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.090909090909092) internal successors, (133), 11 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:45:41,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1505 transitions. [2021-11-03 23:45:41,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-03 23:45:41,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:45:41,135 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:45:41,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-03 23:45:41,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:45:41,342 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-03 23:45:41,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:45:41,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1066415509, now seen corresponding path program 1 times [2021-11-03 23:45:41,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:45:41,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219917769] [2021-11-03 23:45:41,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:45:41,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:45:41,396 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:45:41,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1742814659] [2021-11-03 23:45:41,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:45:41,397 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:45:41,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:45:41,398 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:45:41,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-03 23:45:42,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:45:42,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 3174 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-03 23:45:42,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:45:42,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:45:42,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:45:42,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:45:42,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219917769] [2021-11-03 23:45:42,503 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:45:42,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742814659] [2021-11-03 23:45:42,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742814659] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:45:42,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:45:42,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 23:45:42,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217432066] [2021-11-03 23:45:42,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:45:42,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 23:45:42,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:45:42,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 23:45:42,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:45:42,505 INFO L87 Difference]: Start difference. First operand 1189 states and 1505 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:45:44,547 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 [] [2021-11-03 23:46:08,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:46:08,741 INFO L93 Difference]: Finished difference Result 3244 states and 4103 transitions. [2021-11-03 23:46:08,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 23:46:08,741 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2021-11-03 23:46:08,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:46:08,746 INFO L225 Difference]: With dead ends: 3244 [2021-11-03 23:46:08,746 INFO L226 Difference]: Without dead ends: 2164 [2021-11-03 23:46:08,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.02ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 23:46:08,748 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1242 mSDsluCounter, 6522 mSDsCounter, 0 mSdLazyCounter, 9293 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23733.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.07ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 9293 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25865.16ms IncrementalHoareTripleChecker+Time [2021-11-03 23:46:08,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1242 Valid, 0 Invalid, 9320 Unknown, 0 Unchecked, 42.07ms Time], IncrementalHoareTripleChecker [26 Valid, 9293 Invalid, 1 Unknown, 0 Unchecked, 25865.16ms Time] [2021-11-03 23:46:08,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2164 states. [2021-11-03 23:46:08,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2164 to 1229. [2021-11-03 23:46:08,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 1199 states have (on average 1.2960800667222685) internal successors, (1554), 1228 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:46:08,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1554 transitions. [2021-11-03 23:46:08,789 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1554 transitions. Word has length 133 [2021-11-03 23:46:08,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:46:08,790 INFO L470 AbstractCegarLoop]: Abstraction has 1229 states and 1554 transitions. [2021-11-03 23:46:08,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:46:08,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1554 transitions. [2021-11-03 23:46:08,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-03 23:46:08,791 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:46:08,791 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:46:08,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-03 23:46:09,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:46:09,006 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-03 23:46:09,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:46:09,006 INFO L85 PathProgramCache]: Analyzing trace with hash -732443752, now seen corresponding path program 1 times [2021-11-03 23:46:09,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:46:09,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916456334] [2021-11-03 23:46:09,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:46:09,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:46:09,060 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:46:09,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1220491707] [2021-11-03 23:46:09,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:46:09,062 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:46:09,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:46:09,063 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:46:09,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-03 23:46:09,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:46:09,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 3173 conjuncts, 89 conjunts are in the unsatisfiable core [2021-11-03 23:46:09,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:46:09,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 23:46:10,570 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-03 23:46:10,570 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 46 treesize of output 45 [2021-11-03 23:46:10,606 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-03 23:46:10,612 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 35 treesize of output 34 [2021-11-03 23:46:11,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:46:11,074 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 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 23:46:11,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:46:11,107 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 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 23:46:11,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:46:11,169 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 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-03 23:46:11,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:46:11,198 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 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-03 23:46:11,531 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 23:46:11,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-03 23:46:11,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:46:11,779 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-03 23:46:11,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 67 treesize of output 58 [2021-11-03 23:46:11,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:46:11,858 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-03 23:46:11,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 43 [2021-11-03 23:46:12,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:46:12,714 INFO L354 Elim1Store]: treesize reduction 44, result has 44.3 percent of original size [2021-11-03 23:46:12,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 63 treesize of output 72 [2021-11-03 23:46:12,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:46:12,844 INFO L354 Elim1Store]: treesize reduction 44, result has 44.3 percent of original size [2021-11-03 23:46:12,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 75 [2021-11-03 23:46:14,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-11-03 23:46:14,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-11-03 23:46:14,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:46:14,481 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:46:14,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:46:14,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916456334] [2021-11-03 23:46:14,482 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:46:14,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220491707] [2021-11-03 23:46:14,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220491707] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:46:14,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:46:14,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-03 23:46:14,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607708022] [2021-11-03 23:46:14,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:46:14,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-03 23:46:14,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:46:14,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-03 23:46:14,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2021-11-03 23:46:14,484 INFO L87 Difference]: Start difference. First operand 1229 states and 1554 transitions. Second operand has 18 states, 18 states have (on average 7.5) internal successors, (135), 18 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:46:17,360 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.88s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:47:58,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:47:58,704 INFO L93 Difference]: Finished difference Result 5039 states and 6353 transitions. [2021-11-03 23:47:58,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-03 23:47:58,704 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.5) internal successors, (135), 18 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2021-11-03 23:47:58,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:47:58,714 INFO L225 Difference]: With dead ends: 5039 [2021-11-03 23:47:58,714 INFO L226 Difference]: Without dead ends: 3860 [2021-11-03 23:47:58,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 3973.36ms TimeCoverageRelationStatistics Valid=249, Invalid=1157, Unknown=0, NotChecked=0, Total=1406 [2021-11-03 23:47:58,716 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3840 mSDsluCounter, 25069 mSDsCounter, 0 mSdLazyCounter, 35564 mSolverCounterSat, 223 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 92657.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3840 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 35788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 227.18ms SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 35564 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 100277.62ms IncrementalHoareTripleChecker+Time [2021-11-03 23:47:58,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3840 Valid, 0 Invalid, 35788 Unknown, 0 Unchecked, 227.18ms Time], IncrementalHoareTripleChecker [223 Valid, 35564 Invalid, 1 Unknown, 0 Unchecked, 100277.62ms Time] [2021-11-03 23:47:58,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3860 states. [2021-11-03 23:47:58,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3860 to 2036. [2021-11-03 23:47:58,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2036 states, 2006 states have (on average 1.2941176470588236) internal successors, (2596), 2035 states have internal predecessors, (2596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:47:58,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2036 states to 2036 states and 2596 transitions. [2021-11-03 23:47:58,822 INFO L78 Accepts]: Start accepts. Automaton has 2036 states and 2596 transitions. Word has length 135 [2021-11-03 23:47:58,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:47:58,822 INFO L470 AbstractCegarLoop]: Abstraction has 2036 states and 2596 transitions. [2021-11-03 23:47:58,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.5) internal successors, (135), 18 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:47:58,822 INFO L276 IsEmpty]: Start isEmpty. Operand 2036 states and 2596 transitions. [2021-11-03 23:47:58,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-03 23:47:58,823 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:47:58,823 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:47:58,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-03 23:47:59,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-03 23:47:59,024 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-03 23:47:59,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:47:59,025 INFO L85 PathProgramCache]: Analyzing trace with hash -760944042, now seen corresponding path program 1 times [2021-11-03 23:47:59,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:47:59,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524259631] [2021-11-03 23:47:59,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:47:59,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:47:59,073 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:47:59,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [872600318] [2021-11-03 23:47:59,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:47:59,073 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:47:59,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:47:59,074 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:47:59,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-03 23:47:59,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:47:59,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 3168 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 23:47:59,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:48:00,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:48:00,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:48:00,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:48:00,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524259631] [2021-11-03 23:48:00,205 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:48:00,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872600318] [2021-11-03 23:48:00,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872600318] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:48:00,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:48:00,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:48:00,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786841306] [2021-11-03 23:48:00,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:48:00,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:48:00,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:48:00,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:48:00,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:48:00,206 INFO L87 Difference]: Start difference. First operand 2036 states and 2596 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:48:03,261 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:48:18,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:48:18,139 INFO L93 Difference]: Finished difference Result 4354 states and 5600 transitions. [2021-11-03 23:48:18,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 23:48:18,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2021-11-03 23:48:18,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:48:18,148 INFO L225 Difference]: With dead ends: 4354 [2021-11-03 23:48:18,148 INFO L226 Difference]: Without dead ends: 2388 [2021-11-03 23:48:18,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.30ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:48:18,152 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 306 mSDsluCounter, 2292 mSDsCounter, 0 mSdLazyCounter, 4506 mSolverCounterSat, 165 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15808.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.29ms SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 4506 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17643.02ms IncrementalHoareTripleChecker+Time [2021-11-03 23:48:18,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 0 Invalid, 4672 Unknown, 0 Unchecked, 24.29ms Time], IncrementalHoareTripleChecker [165 Valid, 4506 Invalid, 1 Unknown, 0 Unchecked, 17643.02ms Time] [2021-11-03 23:48:18,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2021-11-03 23:48:18,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2176. [2021-11-03 23:48:18,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2176 states, 2146 states have (on average 1.2739981360671015) internal successors, (2734), 2175 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:48:18,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2176 states to 2176 states and 2734 transitions. [2021-11-03 23:48:18,235 INFO L78 Accepts]: Start accepts. Automaton has 2176 states and 2734 transitions. Word has length 135 [2021-11-03 23:48:18,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:48:18,236 INFO L470 AbstractCegarLoop]: Abstraction has 2176 states and 2734 transitions. [2021-11-03 23:48:18,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:48:18,236 INFO L276 IsEmpty]: Start isEmpty. Operand 2176 states and 2734 transitions. [2021-11-03 23:48:18,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-03 23:48:18,237 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:48:18,237 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:48:18,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-03 23:48:18,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-03 23:48:18,444 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-03 23:48:18,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:48:18,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1358477613, now seen corresponding path program 1 times [2021-11-03 23:48:18,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:48:18,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636675259] [2021-11-03 23:48:18,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:48:18,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:48:18,497 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:48:18,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1954416262] [2021-11-03 23:48:18,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:48:18,498 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:48:18,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:48:18,499 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:48:18,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-03 23:48:19,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:48:19,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 3195 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 23:48:19,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:48:19,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:48:19,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:48:19,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:48:19,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636675259] [2021-11-03 23:48:19,636 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:48:19,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954416262] [2021-11-03 23:48:19,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954416262] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:48:19,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:48:19,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 23:48:19,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985550372] [2021-11-03 23:48:19,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:48:19,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 23:48:19,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:48:19,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 23:48:19,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 23:48:19,638 INFO L87 Difference]: Start difference. First operand 2176 states and 2734 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:48:22,577 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.94s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:48:34,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:48:34,267 INFO L93 Difference]: Finished difference Result 6137 states and 7723 transitions. [2021-11-03 23:48:34,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 23:48:34,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2021-11-03 23:48:34,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:48:34,273 INFO L225 Difference]: With dead ends: 6137 [2021-11-03 23:48:34,273 INFO L226 Difference]: Without dead ends: 4151 [2021-11-03 23:48:34,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.81ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 23:48:34,276 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1296 mSDsluCounter, 1392 mSDsCounter, 0 mSdLazyCounter, 2889 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12498.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1296 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.45ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2889 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14266.76ms IncrementalHoareTripleChecker+Time [2021-11-03 23:48:34,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1296 Valid, 0 Invalid, 2923 Unknown, 0 Unchecked, 15.45ms Time], IncrementalHoareTripleChecker [33 Valid, 2889 Invalid, 1 Unknown, 0 Unchecked, 14266.76ms Time] [2021-11-03 23:48:34,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4151 states. [2021-11-03 23:48:34,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4151 to 2196. [2021-11-03 23:48:34,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2196 states, 2166 states have (on average 1.2714681440443214) internal successors, (2754), 2195 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:48:34,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2196 states to 2196 states and 2754 transitions. [2021-11-03 23:48:34,366 INFO L78 Accepts]: Start accepts. Automaton has 2196 states and 2754 transitions. Word has length 136 [2021-11-03 23:48:34,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:48:34,366 INFO L470 AbstractCegarLoop]: Abstraction has 2196 states and 2754 transitions. [2021-11-03 23:48:34,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:48:34,366 INFO L276 IsEmpty]: Start isEmpty. Operand 2196 states and 2754 transitions. [2021-11-03 23:48:34,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-03 23:48:34,368 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:48:34,368 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:48:34,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-03 23:48:34,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-03 23:48:34,575 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-03 23:48:34,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:48:34,576 INFO L85 PathProgramCache]: Analyzing trace with hash -179405219, now seen corresponding path program 1 times [2021-11-03 23:48:34,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:48:34,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168271927] [2021-11-03 23:48:34,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:48:34,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:48:34,636 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:48:34,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [857188292] [2021-11-03 23:48:34,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:48:34,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:48:34,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:48:34,637 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:48:34,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-03 23:48:35,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:48:35,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 3198 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-03 23:48:35,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:48:35,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:48:35,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:48:35,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:48:35,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168271927] [2021-11-03 23:48:35,853 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:48:35,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857188292] [2021-11-03 23:48:35,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857188292] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:48:35,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:48:35,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 23:48:35,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730447577] [2021-11-03 23:48:35,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:48:35,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 23:48:35,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:48:35,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 23:48:35,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 23:48:35,854 INFO L87 Difference]: Start difference. First operand 2196 states and 2754 transitions. Second operand has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:48:38,717 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.86s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 23:49:24,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:49:24,182 INFO L93 Difference]: Finished difference Result 6573 states and 8194 transitions. [2021-11-03 23:49:24,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 23:49:24,183 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2021-11-03 23:49:24,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:49:24,188 INFO L225 Difference]: With dead ends: 6573 [2021-11-03 23:49:24,189 INFO L226 Difference]: Without dead ends: 4549 [2021-11-03 23:49:24,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 361.67ms TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-11-03 23:49:24,191 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3590 mSDsluCounter, 11140 mSDsCounter, 0 mSdLazyCounter, 14160 mSolverCounterSat, 59 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42154.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3590 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 14220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 98.15ms SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 14160 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47329.00ms IncrementalHoareTripleChecker+Time [2021-11-03 23:49:24,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3590 Valid, 0 Invalid, 14220 Unknown, 0 Unchecked, 98.15ms Time], IncrementalHoareTripleChecker [59 Valid, 14160 Invalid, 1 Unknown, 0 Unchecked, 47329.00ms Time] [2021-11-03 23:49:24,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4549 states. [2021-11-03 23:49:24,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4549 to 1842. [2021-11-03 23:49:24,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1812 states have (on average 1.2665562913907285) internal successors, (2295), 1841 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:49:24,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2295 transitions. [2021-11-03 23:49:24,277 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2295 transitions. Word has length 136 [2021-11-03 23:49:24,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:49:24,278 INFO L470 AbstractCegarLoop]: Abstraction has 1842 states and 2295 transitions. [2021-11-03 23:49:24,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:49:24,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2295 transitions. [2021-11-03 23:49:24,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-03 23:49:24,279 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:49:24,279 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:49:24,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-03 23:49:24,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-03 23:49:24,497 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-03 23:49:24,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:49:24,498 INFO L85 PathProgramCache]: Analyzing trace with hash -842406222, now seen corresponding path program 1 times [2021-11-03 23:49:24,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:49:24,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140897881] [2021-11-03 23:49:24,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:49:24,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:49:24,559 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 23:49:24,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [648830457] [2021-11-03 23:49:24,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:49:24,560 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:49:24,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:49:24,561 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:49:24,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-03 23:49:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:49:25,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 3178 conjuncts, 150 conjunts are in the unsatisfiable core [2021-11-03 23:49:25,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:49:25,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 23:49:26,463 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-03 23:49:26,464 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 46 treesize of output 45 [2021-11-03 23:49:26,506 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-03 23:49:26,506 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 35 treesize of output 34 [2021-11-03 23:49:27,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:49:27,047 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 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 23:49:27,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:49:27,073 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 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 23:49:27,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:49:27,122 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 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-03 23:49:27,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:49:27,159 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 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-03 23:49:27,519 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 23:49:27,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-03 23:49:27,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:49:28,011 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-03 23:49:28,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 67 treesize of output 58 [2021-11-03 23:49:28,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:49:28,095 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-03 23:49:28,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 43 [2021-11-03 23:49:28,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:49:29,084 INFO L354 Elim1Store]: treesize reduction 44, result has 44.3 percent of original size [2021-11-03 23:49:29,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 72 [2021-11-03 23:49:29,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:49:29,246 INFO L354 Elim1Store]: treesize reduction 44, result has 44.3 percent of original size [2021-11-03 23:49:29,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 75 [2021-11-03 23:49:31,458 INFO L354 Elim1Store]: treesize reduction 40, result has 43.7 percent of original size [2021-11-03 23:49:31,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 69 [2021-11-03 23:49:31,594 INFO L354 Elim1Store]: treesize reduction 40, result has 43.7 percent of original size [2021-11-03 23:49:31,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 73 [2021-11-03 23:49:32,661 INFO L354 Elim1Store]: treesize reduction 40, result has 43.7 percent of original size [2021-11-03 23:49:32,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 63 treesize of output 70 [2021-11-03 23:49:32,829 INFO L354 Elim1Store]: treesize reduction 40, result has 43.7 percent of original size [2021-11-03 23:49:32,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 70 treesize of output 77 [2021-11-03 23:49:34,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:49:34,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:49:34,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:49:34,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140897881] [2021-11-03 23:49:34,358 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 23:49:34,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648830457] [2021-11-03 23:49:34,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648830457] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:49:34,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:49:34,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2021-11-03 23:49:34,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168102452] [2021-11-03 23:49:34,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:49:34,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-03 23:49:34,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:49:34,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-03 23:49:34,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2021-11-03 23:49:34,359 INFO L87 Difference]: Start difference. First operand 1842 states and 2295 transitions. Second operand has 29 states, 29 states have (on average 4.724137931034483) internal successors, (137), 29 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:49:37,322 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.96s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15