./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 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_either_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 355537246d5dfb9690a92cc5d0cbf014736bcc62122f38f5559ea0fbf5331d1c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 11:38:05,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 11:38:05,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 11:38:05,528 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 11:38:05,535 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 11:38:05,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 11:38:05,538 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 11:38:05,541 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 11:38:05,543 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 11:38:05,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 11:38:05,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 11:38:05,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 11:38:05,546 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 11:38:05,548 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 11:38:05,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 11:38:05,551 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 11:38:05,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 11:38:05,557 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 11:38:05,558 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 11:38:05,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 11:38:05,565 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 11:38:05,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 11:38:05,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 11:38:05,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 11:38:05,570 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 11:38:05,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 11:38:05,570 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 11:38:05,571 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 11:38:05,571 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 11:38:05,579 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 11:38:05,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 11:38:05,580 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 11:38:05,581 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 11:38:05,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 11:38:05,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 11:38:05,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 11:38:05,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 11:38:05,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 11:38:05,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 11:38:05,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 11:38:05,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 11:38:05,586 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 11:38:05,606 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 11:38:05,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 11:38:05,607 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 11:38:05,607 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 11:38:05,608 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 11:38:05,608 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 11:38:05,608 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 11:38:05,608 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 11:38:05,608 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 11:38:05,609 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 11:38:05,610 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 11:38:05,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 11:38:05,610 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 11:38:05,610 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 11:38:05,610 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 11:38:05,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 11:38:05,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 11:38:05,611 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 11:38:05,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 11:38:05,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 11:38:05,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 11:38:05,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 11:38:05,611 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 11:38:05,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 11:38:05,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 11:38:05,612 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 11:38:05,612 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 11:38:05,612 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 11:38:05,612 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 11:38:05,612 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 355537246d5dfb9690a92cc5d0cbf014736bcc62122f38f5559ea0fbf5331d1c [2021-11-06 11:38:05,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 11:38:05,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 11:38:05,826 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 11:38:05,826 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 11:38:05,827 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 11:38:05,828 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i [2021-11-06 11:38:05,882 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c00cc4b90/13bdd6e0c44c4cf6b8d083f424625b1b/FLAGbb139e80c [2021-11-06 11:38:06,430 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 11:38:06,432 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i [2021-11-06 11:38:06,456 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c00cc4b90/13bdd6e0c44c4cf6b8d083f424625b1b/FLAGbb139e80c [2021-11-06 11:38:06,656 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c00cc4b90/13bdd6e0c44c4cf6b8d083f424625b1b [2021-11-06 11:38:06,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 11:38:06,660 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 11:38:06,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 11:38:06,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 11:38:06,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 11:38:06,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:38:06" (1/1) ... [2021-11-06 11:38:06,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@664f90ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:38:06, skipping insertion in model container [2021-11-06 11:38:06,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:38:06" (1/1) ... [2021-11-06 11:38:06,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 11:38:06,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 11:38:06,924 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_either_harness.i[4506,4519] [2021-11-06 11:38:06,930 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_either_harness.i[4566,4579] [2021-11-06 11:38:06,944 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 11:38:06,952 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 11:38:07,431 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,432 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,432 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,433 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,434 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,442 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,448 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,450 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,451 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,453 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,458 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,458 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,459 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,634 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 11:38:07,635 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 11:38:07,636 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 11:38:07,636 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 11:38:07,637 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 11:38:07,637 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 11:38:07,638 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 11:38:07,638 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 11:38:07,638 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 11:38:07,639 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 11:38:07,716 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 11:38:07,736 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,737 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,739 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,747 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,802 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,802 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,803 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,803 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,805 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,805 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,806 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,807 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,807 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,807 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,807 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,808 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,808 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,814 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,814 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,814 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,815 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,822 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,823 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,830 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,830 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,831 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 11:38:07,870 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 11:38:07,886 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_either_harness.i[4506,4519] [2021-11-06 11:38:07,889 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_either_harness.i[4566,4579] [2021-11-06 11:38:07,899 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-06 11:38:07,906 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-06 11:38:07,931 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,931 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,932 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,932 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,932 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,938 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,939 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,940 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,969 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,970 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,971 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,971 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:07,971 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:08,009 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-06 11:38:08,010 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-06 11:38:08,010 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-06 11:38:08,011 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-06 11:38:08,011 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-06 11:38:08,012 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-06 11:38:08,012 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-06 11:38:08,013 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-06 11:38:08,013 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-06 11:38:08,013 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-06 11:38:08,032 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-06 11:38:08,052 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:08,052 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:08,053 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:08,056 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:08,075 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:08,076 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:08,076 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:08,076 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:08,076 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:08,077 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:08,077 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:08,078 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:08,078 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:08,078 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:08,079 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:08,079 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:08,079 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:08,080 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:08,081 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:08,081 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:08,081 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:08,083 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:08,083 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:08,088 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:08,089 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:08,089 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-06 11:38:08,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 11:38:08,233 INFO L208 MainTranslator]: Completed translation [2021-11-06 11:38:08,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:38:08 WrapperNode [2021-11-06 11:38:08,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 11:38:08,235 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 11:38:08,235 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 11:38:08,235 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 11:38:08,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:38:08" (1/1) ... [2021-11-06 11:38:08,313 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:38:08" (1/1) ... [2021-11-06 11:38:08,561 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 11:38:08,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 11:38:08,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 11:38:08,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 11:38:08,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:38:08" (1/1) ... [2021-11-06 11:38:08,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:38:08" (1/1) ... [2021-11-06 11:38:08,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:38:08" (1/1) ... [2021-11-06 11:38:08,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:38:08" (1/1) ... [2021-11-06 11:38:08,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:38:08" (1/1) ... [2021-11-06 11:38:08,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:38:08" (1/1) ... [2021-11-06 11:38:08,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:38:08" (1/1) ... [2021-11-06 11:38:08,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 11:38:08,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 11:38:08,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 11:38:08,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 11:38:08,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:38:08" (1/1) ... [2021-11-06 11:38:08,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 11:38:08,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:38:08,922 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) [2021-11-06 11:38:08,928 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 [2021-11-06 11:38:08,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 11:38:08,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 11:38:08,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 11:38:08,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 11:38:08,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 11:38:08,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 11:38:08,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 11:38:08,949 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-06 11:38:08,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 11:38:08,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 11:38:08,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 11:38:08,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 11:38:23,374 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 11:38:23,374 INFO L299 CfgBuilder]: Removed 1637 assume(true) statements. [2021-11-06 11:38:23,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:38:23 BoogieIcfgContainer [2021-11-06 11:38:23,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 11:38:23,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 11:38:23,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 11:38:23,383 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 11:38:23,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:38:06" (1/3) ... [2021-11-06 11:38:23,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617236ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:38:23, skipping insertion in model container [2021-11-06 11:38:23,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:38:08" (2/3) ... [2021-11-06 11:38:23,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617236ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:38:23, skipping insertion in model container [2021-11-06 11:38:23,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:38:23" (3/3) ... [2021-11-06 11:38:23,386 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_either_harness.i [2021-11-06 11:38:23,394 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 11:38:23,394 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2021-11-06 11:38:23,436 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 11:38:23,444 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 [2021-11-06 11:38:23,444 INFO L340 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2021-11-06 11:38:23,485 INFO L276 IsEmpty]: Start isEmpty. Operand has 2061 states, 2006 states have (on average 1.4272183449651046) internal successors, (2863), 2060 states have internal predecessors, (2863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:38:23,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-06 11:38:23,490 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:38:23,491 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:38:23,491 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 11:38:23,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:38:23,494 INFO L85 PathProgramCache]: Analyzing trace with hash -771143003, now seen corresponding path program 1 times [2021-11-06 11:38:23,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:38:23,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688054692] [2021-11-06 11:38:23,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:38:23,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:38:23,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:38:23,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:38:23,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:38:23,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688054692] [2021-11-06 11:38:23,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688054692] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:38:23,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:38:23,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 11:38:23,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434650393] [2021-11-06 11:38:23,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 11:38:23,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:38:23,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 11:38:23,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 11:38:24,001 INFO L87 Difference]: Start difference. First operand has 2061 states, 2006 states have (on average 1.4272183449651046) internal successors, (2863), 2060 states have internal predecessors, (2863), 0 states have call successors, (0), 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 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:38:24,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:38:24,079 INFO L93 Difference]: Finished difference Result 4116 states and 5719 transitions. [2021-11-06 11:38:24,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 11:38:24,081 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-06 11:38:24,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:38:24,097 INFO L225 Difference]: With dead ends: 4116 [2021-11-06 11:38:24,098 INFO L226 Difference]: Without dead ends: 2056 [2021-11-06 11:38:24,103 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 11:38:24,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2056 states. [2021-11-06 11:38:24,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2056 to 2056. [2021-11-06 11:38:24,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2056 states, 2002 states have (on average 1.326173826173826) internal successors, (2655), 2055 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:38:24,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2056 states to 2056 states and 2655 transitions. [2021-11-06 11:38:24,193 INFO L78 Accepts]: Start accepts. Automaton has 2056 states and 2655 transitions. Word has length 41 [2021-11-06 11:38:24,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:38:24,194 INFO L470 AbstractCegarLoop]: Abstraction has 2056 states and 2655 transitions. [2021-11-06 11:38:24,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:38:24,194 INFO L276 IsEmpty]: Start isEmpty. Operand 2056 states and 2655 transitions. [2021-11-06 11:38:24,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-06 11:38:24,199 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:38:24,199 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:38:24,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 11:38:24,199 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 11:38:24,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:38:24,201 INFO L85 PathProgramCache]: Analyzing trace with hash 890029669, now seen corresponding path program 1 times [2021-11-06 11:38:24,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:38:24,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531992055] [2021-11-06 11:38:24,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:38:24,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:38:24,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:38:24,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:38:24,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:38:24,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531992055] [2021-11-06 11:38:24,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531992055] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:38:24,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:38:24,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:38:24,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523664449] [2021-11-06 11:38:24,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:38:24,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:38:24,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:38:24,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:38:24,426 INFO L87 Difference]: Start difference. First operand 2056 states and 2655 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:38:24,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:38:24,684 INFO L93 Difference]: Finished difference Result 4034 states and 5208 transitions. [2021-11-06 11:38:24,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 11:38:24,689 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-06 11:38:24,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:38:24,695 INFO L225 Difference]: With dead ends: 4034 [2021-11-06 11:38:24,695 INFO L226 Difference]: Without dead ends: 2058 [2021-11-06 11:38:24,698 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:38:24,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2058 states. [2021-11-06 11:38:24,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2058 to 2056. [2021-11-06 11:38:24,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2056 states, 2002 states have (on average 1.3246753246753247) internal successors, (2652), 2055 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:38:24,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2056 states to 2056 states and 2652 transitions. [2021-11-06 11:38:24,731 INFO L78 Accepts]: Start accepts. Automaton has 2056 states and 2652 transitions. Word has length 41 [2021-11-06 11:38:24,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:38:24,732 INFO L470 AbstractCegarLoop]: Abstraction has 2056 states and 2652 transitions. [2021-11-06 11:38:24,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:38:24,732 INFO L276 IsEmpty]: Start isEmpty. Operand 2056 states and 2652 transitions. [2021-11-06 11:38:24,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-06 11:38:24,735 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:38:24,735 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:38:24,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 11:38:24,736 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 11:38:24,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:38:24,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1055647481, now seen corresponding path program 1 times [2021-11-06 11:38:24,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:38:24,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819484288] [2021-11-06 11:38:24,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:38:24,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:38:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:38:25,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:38:25,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:38:25,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819484288] [2021-11-06 11:38:25,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819484288] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:38:25,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:38:25,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 11:38:25,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971949767] [2021-11-06 11:38:25,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 11:38:25,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:38:25,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 11:38:25,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:38:25,028 INFO L87 Difference]: Start difference. First operand 2056 states and 2652 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:38:27,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:38:27,608 INFO L93 Difference]: Finished difference Result 4157 states and 5359 transitions. [2021-11-06 11:38:27,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 11:38:27,609 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-06 11:38:27,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:38:27,615 INFO L225 Difference]: With dead ends: 4157 [2021-11-06 11:38:27,615 INFO L226 Difference]: Without dead ends: 2149 [2021-11-06 11:38:27,618 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-06 11:38:27,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2149 states. [2021-11-06 11:38:27,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2149 to 2056. [2021-11-06 11:38:27,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2056 states, 2002 states have (on average 1.3231768231768233) internal successors, (2649), 2055 states have internal predecessors, (2649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:38:27,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2056 states to 2056 states and 2649 transitions. [2021-11-06 11:38:27,651 INFO L78 Accepts]: Start accepts. Automaton has 2056 states and 2649 transitions. Word has length 49 [2021-11-06 11:38:27,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:38:27,652 INFO L470 AbstractCegarLoop]: Abstraction has 2056 states and 2649 transitions. [2021-11-06 11:38:27,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:38:27,652 INFO L276 IsEmpty]: Start isEmpty. Operand 2056 states and 2649 transitions. [2021-11-06 11:38:27,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-06 11:38:27,653 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:38:27,653 INFO L513 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] [2021-11-06 11:38:27,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 11:38:27,653 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 11:38:27,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:38:27,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1757033039, now seen corresponding path program 1 times [2021-11-06 11:38:27,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:38:27,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846177532] [2021-11-06 11:38:27,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:38:27,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:38:27,723 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:38:27,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [425440905] [2021-11-06 11:38:27,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:38:27,724 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:38:27,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:38:27,725 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) [2021-11-06 11:38:27,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 11:38:28,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:38:28,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 2598 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 11:38:28,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:38:28,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:38:28,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:38:28,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846177532] [2021-11-06 11:38:28,575 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:38:28,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425440905] [2021-11-06 11:38:28,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425440905] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:38:28,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:38:28,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 11:38:28,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479865375] [2021-11-06 11:38:28,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 11:38:28,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:38:28,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 11:38:28,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 11:38:28,577 INFO L87 Difference]: Start difference. First operand 2056 states and 2649 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:38:28,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:38:28,620 INFO L93 Difference]: Finished difference Result 2179 states and 2815 transitions. [2021-11-06 11:38:28,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 11:38:28,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-06 11:38:28,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:38:28,625 INFO L225 Difference]: With dead ends: 2179 [2021-11-06 11:38:28,625 INFO L226 Difference]: Without dead ends: 2057 [2021-11-06 11:38:28,626 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 11:38:28,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2057 states. [2021-11-06 11:38:28,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2057 to 2057. [2021-11-06 11:38:28,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2057 states, 2003 states have (on average 1.3230154767848228) internal successors, (2650), 2056 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:38:28,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 2650 transitions. [2021-11-06 11:38:28,657 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 2650 transitions. Word has length 65 [2021-11-06 11:38:28,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:38:28,658 INFO L470 AbstractCegarLoop]: Abstraction has 2057 states and 2650 transitions. [2021-11-06 11:38:28,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:38:28,658 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 2650 transitions. [2021-11-06 11:38:28,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-06 11:38:28,659 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:38:28,660 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:38:28,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 11:38:28,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:38:28,869 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 11:38:28,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:38:28,869 INFO L85 PathProgramCache]: Analyzing trace with hash 61465685, now seen corresponding path program 1 times [2021-11-06 11:38:28,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:38:28,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855781978] [2021-11-06 11:38:28,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:38:28,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:38:28,949 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:38:28,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1625684406] [2021-11-06 11:38:28,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:38:28,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:38:28,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:38:28,951 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) [2021-11-06 11:38:28,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 11:38:29,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:38:29,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 2660 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 11:38:29,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:38:30,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:38:30,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:38:30,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855781978] [2021-11-06 11:38:30,190 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:38:30,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625684406] [2021-11-06 11:38:30,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625684406] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:38:30,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:38:30,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 11:38:30,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387000162] [2021-11-06 11:38:30,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 11:38:30,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:38:30,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 11:38:30,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 11:38:30,192 INFO L87 Difference]: Start difference. First operand 2057 states and 2650 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:38:31,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:38:31,768 INFO L93 Difference]: Finished difference Result 5594 states and 7164 transitions. [2021-11-06 11:38:31,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 11:38:31,769 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-06 11:38:31,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:38:31,778 INFO L225 Difference]: With dead ends: 5594 [2021-11-06 11:38:31,778 INFO L226 Difference]: Without dead ends: 3616 [2021-11-06 11:38:31,781 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-06 11:38:31,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3616 states. [2021-11-06 11:38:31,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3616 to 2057. [2021-11-06 11:38:31,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2057 states, 2003 states have (on average 1.3215177234148776) internal successors, (2647), 2056 states have internal predecessors, (2647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:38:31,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 2647 transitions. [2021-11-06 11:38:31,827 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 2647 transitions. Word has length 73 [2021-11-06 11:38:31,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:38:31,828 INFO L470 AbstractCegarLoop]: Abstraction has 2057 states and 2647 transitions. [2021-11-06 11:38:31,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:38:31,828 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 2647 transitions. [2021-11-06 11:38:31,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-06 11:38:31,829 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:38:31,829 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:38:31,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-06 11:38:32,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:38:32,050 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 11:38:32,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:38:32,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1420657039, now seen corresponding path program 1 times [2021-11-06 11:38:32,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:38:32,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976948895] [2021-11-06 11:38:32,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:38:32,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:38:32,110 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:38:32,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [536945815] [2021-11-06 11:38:32,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:38:32,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:38:32,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:38:32,112 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) [2021-11-06 11:38:32,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 11:38:32,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:38:32,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 2765 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-06 11:38:32,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:38:33,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:38:33,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:38:33,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976948895] [2021-11-06 11:38:33,356 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:38:33,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536945815] [2021-11-06 11:38:33,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536945815] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:38:33,356 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:38:33,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 11:38:33,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690171302] [2021-11-06 11:38:33,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 11:38:33,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:38:33,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 11:38:33,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 11:38:33,357 INFO L87 Difference]: Start difference. First operand 2057 states and 2647 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:38:36,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:38:36,014 INFO L93 Difference]: Finished difference Result 8487 states and 10773 transitions. [2021-11-06 11:38:36,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 11:38:36,015 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-06 11:38:36,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:38:36,037 INFO L225 Difference]: With dead ends: 8487 [2021-11-06 11:38:36,037 INFO L226 Difference]: Without dead ends: 6493 [2021-11-06 11:38:36,044 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-06 11:38:36,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6493 states. [2021-11-06 11:38:36,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6493 to 2057. [2021-11-06 11:38:36,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2057 states, 2003 states have (on average 1.3200199700449327) internal successors, (2644), 2056 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:38:36,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 2644 transitions. [2021-11-06 11:38:36,137 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 2644 transitions. Word has length 97 [2021-11-06 11:38:36,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:38:36,137 INFO L470 AbstractCegarLoop]: Abstraction has 2057 states and 2644 transitions. [2021-11-06 11:38:36,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:38:36,137 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 2644 transitions. [2021-11-06 11:38:36,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-06 11:38:36,138 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:38:36,138 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:38:36,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-06 11:38:36,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:38:36,355 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 11:38:36,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:38:36,356 INFO L85 PathProgramCache]: Analyzing trace with hash 883061289, now seen corresponding path program 1 times [2021-11-06 11:38:36,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:38:36,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716083255] [2021-11-06 11:38:36,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:38:36,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:38:36,431 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:38:36,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1900313380] [2021-11-06 11:38:36,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:38:36,432 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:38:36,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:38:36,433 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) [2021-11-06 11:38:36,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-06 11:38:37,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:38:37,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 2955 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-06 11:38:37,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:38:37,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:38:37,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:38:37,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716083255] [2021-11-06 11:38:37,887 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:38:37,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900313380] [2021-11-06 11:38:37,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900313380] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:38:37,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:38:37,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 11:38:37,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582001061] [2021-11-06 11:38:37,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 11:38:37,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:38:37,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 11:38:37,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 11:38:37,889 INFO L87 Difference]: Start difference. First operand 2057 states and 2644 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:38:38,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:38:38,697 INFO L93 Difference]: Finished difference Result 4450 states and 5708 transitions. [2021-11-06 11:38:38,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 11:38:38,698 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-06 11:38:38,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:38:38,704 INFO L225 Difference]: With dead ends: 4450 [2021-11-06 11:38:38,705 INFO L226 Difference]: Without dead ends: 2589 [2021-11-06 11:38:38,707 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-06 11:38:38,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2589 states. [2021-11-06 11:38:38,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2589 to 2057. [2021-11-06 11:38:38,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2057 states, 2003 states have (on average 1.3185222166749875) internal successors, (2641), 2056 states have internal predecessors, (2641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:38:38,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 2641 transitions. [2021-11-06 11:38:38,752 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 2641 transitions. Word has length 113 [2021-11-06 11:38:38,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:38:38,752 INFO L470 AbstractCegarLoop]: Abstraction has 2057 states and 2641 transitions. [2021-11-06 11:38:38,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:38:38,753 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 2641 transitions. [2021-11-06 11:38:38,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-06 11:38:38,753 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:38:38,753 INFO L513 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] [2021-11-06 11:38:38,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-06 11:38:38,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:38:38,967 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 11:38:38,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:38:38,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1442612120, now seen corresponding path program 1 times [2021-11-06 11:38:38,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:38:38,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443934984] [2021-11-06 11:38:38,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:38:38,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:38:39,041 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:38:39,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [805754562] [2021-11-06 11:38:39,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:38:39,042 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:38:39,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:38:39,056 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) [2021-11-06 11:38:39,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-06 11:38:39,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:38:39,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 2986 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-06 11:38:39,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:38:40,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:38:40,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:38:40,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443934984] [2021-11-06 11:38:40,456 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:38:40,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805754562] [2021-11-06 11:38:40,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805754562] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:38:40,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:38:40,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 11:38:40,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144842924] [2021-11-06 11:38:40,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 11:38:40,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:38:40,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 11:38:40,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 11:38:40,458 INFO L87 Difference]: Start difference. First operand 2057 states and 2641 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) [2021-11-06 11:38:42,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:38:42,825 INFO L93 Difference]: Finished difference Result 5356 states and 6827 transitions. [2021-11-06 11:38:42,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 11:38:42,825 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 [2021-11-06 11:38:42,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:38:42,833 INFO L225 Difference]: With dead ends: 5356 [2021-11-06 11:38:42,833 INFO L226 Difference]: Without dead ends: 3463 [2021-11-06 11:38:42,835 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-06 11:38:42,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3463 states. [2021-11-06 11:38:42,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3463 to 2057. [2021-11-06 11:38:42,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2057 states, 2003 states have (on average 1.3170244633050425) internal successors, (2638), 2056 states have internal predecessors, (2638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:38:42,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 2638 transitions. [2021-11-06 11:38:42,896 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 2638 transitions. Word has length 117 [2021-11-06 11:38:42,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:38:42,896 INFO L470 AbstractCegarLoop]: Abstraction has 2057 states and 2638 transitions. [2021-11-06 11:38:42,897 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) [2021-11-06 11:38:42,897 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 2638 transitions. [2021-11-06 11:38:42,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-06 11:38:42,898 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:38:42,898 INFO L513 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] [2021-11-06 11:38:42,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-06 11:38:43,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:38:43,121 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 11:38:43,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:38:43,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1184403276, now seen corresponding path program 1 times [2021-11-06 11:38:43,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:38:43,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613446152] [2021-11-06 11:38:43,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:38:43,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:38:43,185 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:38:43,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1226580459] [2021-11-06 11:38:43,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:38:43,186 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:38:43,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:38:43,187 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) [2021-11-06 11:38:43,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-06 11:38:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:38:43,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 3081 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-06 11:38:43,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:38:44,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:38:44,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:38:44,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613446152] [2021-11-06 11:38:44,703 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:38:44,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226580459] [2021-11-06 11:38:44,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226580459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:38:44,703 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:38:44,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 11:38:44,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231492556] [2021-11-06 11:38:44,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 11:38:44,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:38:44,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 11:38:44,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 11:38:44,704 INFO L87 Difference]: Start difference. First operand 2057 states and 2638 transitions. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:38:46,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:38:46,196 INFO L93 Difference]: Finished difference Result 5936 states and 7570 transitions. [2021-11-06 11:38:46,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 11:38:46,196 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2021-11-06 11:38:46,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:38:46,206 INFO L225 Difference]: With dead ends: 5936 [2021-11-06 11:38:46,206 INFO L226 Difference]: Without dead ends: 4074 [2021-11-06 11:38:46,208 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-06 11:38:46,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4074 states. [2021-11-06 11:38:46,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4074 to 2057. [2021-11-06 11:38:46,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2057 states, 2003 states have (on average 1.3155267099350973) internal successors, (2635), 2056 states have internal predecessors, (2635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:38:46,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 2635 transitions. [2021-11-06 11:38:46,256 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 2635 transitions. Word has length 125 [2021-11-06 11:38:46,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:38:46,257 INFO L470 AbstractCegarLoop]: Abstraction has 2057 states and 2635 transitions. [2021-11-06 11:38:46,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:38:46,257 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 2635 transitions. [2021-11-06 11:38:46,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-06 11:38:46,258 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:38:46,258 INFO L513 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] [2021-11-06 11:38:46,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-06 11:38:46,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:38:46,481 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 11:38:46,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:38:46,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1283216539, now seen corresponding path program 1 times [2021-11-06 11:38:46,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:38:46,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45899588] [2021-11-06 11:38:46,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:38:46,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:38:46,545 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:38:46,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1037748881] [2021-11-06 11:38:46,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:38:46,545 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:38:46,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:38:46,546 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) [2021-11-06 11:38:46,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-06 11:38:47,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:38:47,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 3131 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-06 11:38:47,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:38:48,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:38:48,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:38:48,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45899588] [2021-11-06 11:38:48,125 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:38:48,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037748881] [2021-11-06 11:38:48,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037748881] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:38:48,125 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:38:48,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 11:38:48,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154322450] [2021-11-06 11:38:48,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 11:38:48,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:38:48,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 11:38:48,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-06 11:38:48,127 INFO L87 Difference]: Start difference. First operand 2057 states and 2635 transitions. Second operand has 8 states, 8 states have (on average 17.125) internal successors, (137), 7 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) [2021-11-06 11:38:51,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:38:51,487 INFO L93 Difference]: Finished difference Result 5964 states and 7602 transitions. [2021-11-06 11:38:51,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-06 11:38:51,487 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 7 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) Word has length 137 [2021-11-06 11:38:51,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:38:51,495 INFO L225 Difference]: With dead ends: 5964 [2021-11-06 11:38:51,495 INFO L226 Difference]: Without dead ends: 4086 [2021-11-06 11:38:51,498 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2021-11-06 11:38:51,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4086 states. [2021-11-06 11:38:51,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4086 to 2057. [2021-11-06 11:38:51,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2057 states, 2003 states have (on average 1.3140289565651522) internal successors, (2632), 2056 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:38:51,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 2632 transitions. [2021-11-06 11:38:51,549 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 2632 transitions. Word has length 137 [2021-11-06 11:38:51,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:38:51,549 INFO L470 AbstractCegarLoop]: Abstraction has 2057 states and 2632 transitions. [2021-11-06 11:38:51,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 7 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) [2021-11-06 11:38:51,550 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 2632 transitions. [2021-11-06 11:38:51,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-06 11:38:51,551 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:38:51,551 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:38:51,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-06 11:38:51,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:38:51,768 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 11:38:51,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:38:51,769 INFO L85 PathProgramCache]: Analyzing trace with hash -561648695, now seen corresponding path program 1 times [2021-11-06 11:38:51,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:38:51,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222883213] [2021-11-06 11:38:51,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:38:51,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:38:51,836 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:38:51,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [142365458] [2021-11-06 11:38:51,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:38:51,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:38:51,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:38:51,838 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) [2021-11-06 11:38:51,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-06 11:38:52,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:38:52,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 3226 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-06 11:38:52,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:38:53,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:38:53,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:38:53,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222883213] [2021-11-06 11:38:53,528 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:38:53,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142365458] [2021-11-06 11:38:53,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142365458] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:38:53,528 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:38:53,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 11:38:53,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096341636] [2021-11-06 11:38:53,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 11:38:53,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:38:53,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 11:38:53,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 11:38:53,529 INFO L87 Difference]: Start difference. First operand 2057 states and 2632 transitions. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:38:54,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:38:54,856 INFO L93 Difference]: Finished difference Result 5844 states and 7469 transitions. [2021-11-06 11:38:54,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 11:38:54,857 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2021-11-06 11:38:54,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:38:54,864 INFO L225 Difference]: With dead ends: 5844 [2021-11-06 11:38:54,864 INFO L226 Difference]: Without dead ends: 3992 [2021-11-06 11:38:54,867 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-11-06 11:38:54,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3992 states. [2021-11-06 11:38:54,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3992 to 2057. [2021-11-06 11:38:54,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2057 states, 2003 states have (on average 1.3130304543185223) internal successors, (2630), 2056 states have internal predecessors, (2630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:38:54,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 2630 transitions. [2021-11-06 11:38:54,920 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 2630 transitions. Word has length 145 [2021-11-06 11:38:54,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:38:54,921 INFO L470 AbstractCegarLoop]: Abstraction has 2057 states and 2630 transitions. [2021-11-06 11:38:54,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:38:54,921 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 2630 transitions. [2021-11-06 11:38:54,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-06 11:38:54,922 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:38:54,922 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:38:54,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-06 11:38:55,135 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,SelfDestructingSolverStorable10 [2021-11-06 11:38:55,136 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 11:38:55,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:38:55,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1953947592, now seen corresponding path program 1 times [2021-11-06 11:38:55,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:38:55,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067788092] [2021-11-06 11:38:55,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:38:55,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:38:55,203 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:38:55,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1874048332] [2021-11-06 11:38:55,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:38:55,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:38:55,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:38:55,205 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) [2021-11-06 11:38:55,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-06 11:38:56,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:38:56,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 3257 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-06 11:38:56,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:38:56,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:38:56,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:38:56,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067788092] [2021-11-06 11:38:56,991 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:38:56,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874048332] [2021-11-06 11:38:56,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874048332] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:38:56,992 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:38:56,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 11:38:56,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422958180] [2021-11-06 11:38:56,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 11:38:56,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:38:56,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 11:38:56,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 11:38:56,993 INFO L87 Difference]: Start difference. First operand 2057 states and 2630 transitions. Second operand has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:39:00,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:39:00,834 INFO L93 Difference]: Finished difference Result 6750 states and 8586 transitions. [2021-11-06 11:39:00,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-06 11:39:00,835 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 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 149 [2021-11-06 11:39:00,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:39:00,842 INFO L225 Difference]: With dead ends: 6750 [2021-11-06 11:39:00,842 INFO L226 Difference]: Without dead ends: 4898 [2021-11-06 11:39:00,845 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2021-11-06 11:39:00,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4898 states. [2021-11-06 11:39:00,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4898 to 2057. [2021-11-06 11:39:00,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2057 states, 2003 states have (on average 1.311033449825262) internal successors, (2626), 2056 states have internal predecessors, (2626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:39:00,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 2626 transitions. [2021-11-06 11:39:00,908 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 2626 transitions. Word has length 149 [2021-11-06 11:39:00,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:39:00,909 INFO L470 AbstractCegarLoop]: Abstraction has 2057 states and 2626 transitions. [2021-11-06 11:39:00,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.285714285714285) internal successors, (149), 7 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:39:00,909 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 2626 transitions. [2021-11-06 11:39:00,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-06 11:39:00,910 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:39:00,910 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:39:00,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-06 11:39:01,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:39:01,116 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 11:39:01,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:39:01,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1844158272, now seen corresponding path program 1 times [2021-11-06 11:39:01,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:39:01,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230924192] [2021-11-06 11:39:01,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:39:01,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:39:01,173 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:39:01,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1617457425] [2021-11-06 11:39:01,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:39:01,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:39:01,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:39:01,175 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) [2021-11-06 11:39:01,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-06 11:39:02,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:39:02,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 3251 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-06 11:39:02,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:39:02,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:39:02,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:39:02,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230924192] [2021-11-06 11:39:02,884 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:39:02,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617457425] [2021-11-06 11:39:02,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617457425] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:39:02,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:39:02,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 11:39:02,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020035353] [2021-11-06 11:39:02,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 11:39:02,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:39:02,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 11:39:02,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 11:39:02,886 INFO L87 Difference]: Start difference. First operand 2057 states and 2626 transitions. Second operand has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 7 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:39:05,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:39:05,233 INFO L93 Difference]: Finished difference Result 3396 states and 4344 transitions. [2021-11-06 11:39:05,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 11:39:05,234 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 7 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2021-11-06 11:39:05,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:39:05,240 INFO L225 Difference]: With dead ends: 3396 [2021-11-06 11:39:05,240 INFO L226 Difference]: Without dead ends: 2381 [2021-11-06 11:39:05,241 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-06 11:39:05,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2021-11-06 11:39:05,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 2057. [2021-11-06 11:39:05,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2057 states, 2003 states have (on average 1.308537194208687) internal successors, (2621), 2056 states have internal predecessors, (2621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:39:05,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 2621 transitions. [2021-11-06 11:39:05,301 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 2621 transitions. Word has length 150 [2021-11-06 11:39:05,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:39:05,301 INFO L470 AbstractCegarLoop]: Abstraction has 2057 states and 2621 transitions. [2021-11-06 11:39:05,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 7 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:39:05,302 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 2621 transitions. [2021-11-06 11:39:05,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-06 11:39:05,303 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:39:05,303 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:39:05,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-06 11:39:05,515 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,SelfDestructingSolverStorable12 [2021-11-06 11:39:05,516 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 11:39:05,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:39:05,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1758983980, now seen corresponding path program 1 times [2021-11-06 11:39:05,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:39:05,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679465103] [2021-11-06 11:39:05,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:39:05,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:39:05,577 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:39:05,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [127008416] [2021-11-06 11:39:05,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:39:05,578 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:39:05,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:39:05,579 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) [2021-11-06 11:39:05,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-06 11:39:06,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:39:06,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 3352 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-06 11:39:06,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:39:07,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:39:07,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:39:07,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679465103] [2021-11-06 11:39:07,585 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:39:07,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127008416] [2021-11-06 11:39:07,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127008416] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:39:07,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:39:07,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 11:39:07,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318055884] [2021-11-06 11:39:07,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 11:39:07,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:39:07,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 11:39:07,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-06 11:39:07,586 INFO L87 Difference]: Start difference. First operand 2057 states and 2621 transitions. Second operand has 8 states, 8 states have (on average 19.625) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:39:10,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:39:10,050 INFO L93 Difference]: Finished difference Result 7709 states and 9778 transitions. [2021-11-06 11:39:10,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-06 11:39:10,051 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.625) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 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 157 [2021-11-06 11:39:10,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:39:10,060 INFO L225 Difference]: With dead ends: 7709 [2021-11-06 11:39:10,060 INFO L226 Difference]: Without dead ends: 5857 [2021-11-06 11:39:10,063 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2021-11-06 11:39:10,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5857 states. [2021-11-06 11:39:10,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5857 to 2057. [2021-11-06 11:39:10,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2057 states, 2003 states have (on average 1.3075386919620569) internal successors, (2619), 2056 states have internal predecessors, (2619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:39:10,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2057 states to 2057 states and 2619 transitions. [2021-11-06 11:39:10,136 INFO L78 Accepts]: Start accepts. Automaton has 2057 states and 2619 transitions. Word has length 157 [2021-11-06 11:39:10,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:39:10,137 INFO L470 AbstractCegarLoop]: Abstraction has 2057 states and 2619 transitions. [2021-11-06 11:39:10,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.625) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:39:10,137 INFO L276 IsEmpty]: Start isEmpty. Operand 2057 states and 2619 transitions. [2021-11-06 11:39:10,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-06 11:39:10,138 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:39:10,138 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:39:10,164 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-11-06 11:39:10,345 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,SelfDestructingSolverStorable13 [2021-11-06 11:39:10,345 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 11:39:10,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:39:10,346 INFO L85 PathProgramCache]: Analyzing trace with hash 748769034, now seen corresponding path program 1 times [2021-11-06 11:39:10,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:39:10,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878816915] [2021-11-06 11:39:10,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:39:10,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:39:10,406 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:39:10,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [189142700] [2021-11-06 11:39:10,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:39:10,407 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:39:10,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:39:10,408 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) [2021-11-06 11:39:10,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-06 11:39:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:39:11,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 3436 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 11:39:11,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:39:11,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:39:11,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:39:11,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878816915] [2021-11-06 11:39:11,742 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:39:11,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189142700] [2021-11-06 11:39:11,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189142700] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:39:11,743 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:39:11,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:39:11,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207931285] [2021-11-06 11:39:11,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:39:11,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:39:11,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:39:11,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:39:11,744 INFO L87 Difference]: Start difference. First operand 2057 states and 2619 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:39:14,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:39:14,736 INFO L93 Difference]: Finished difference Result 4452 states and 5720 transitions. [2021-11-06 11:39:14,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 11:39:14,737 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 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 166 [2021-11-06 11:39:14,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:39:14,753 INFO L225 Difference]: With dead ends: 4452 [2021-11-06 11:39:14,753 INFO L226 Difference]: Without dead ends: 2442 [2021-11-06 11:39:14,756 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:39:14,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2021-11-06 11:39:14,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 2211. [2021-11-06 11:39:14,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2211 states, 2157 states have (on average 1.285581826611034) internal successors, (2773), 2210 states have internal predecessors, (2773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:39:14,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2211 states to 2211 states and 2773 transitions. [2021-11-06 11:39:14,817 INFO L78 Accepts]: Start accepts. Automaton has 2211 states and 2773 transitions. Word has length 166 [2021-11-06 11:39:14,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:39:14,817 INFO L470 AbstractCegarLoop]: Abstraction has 2211 states and 2773 transitions. [2021-11-06 11:39:14,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:39:14,818 INFO L276 IsEmpty]: Start isEmpty. Operand 2211 states and 2773 transitions. [2021-11-06 11:39:14,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-06 11:39:14,819 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:39:14,819 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:39:14,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-06 11:39:15,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-06 11:39:15,036 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 11:39:15,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:39:15,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1857254520, now seen corresponding path program 1 times [2021-11-06 11:39:15,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:39:15,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836854049] [2021-11-06 11:39:15,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:39:15,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:39:15,093 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:39:15,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1598325316] [2021-11-06 11:39:15,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:39:15,093 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:39:15,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:39:15,095 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:39:15,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-06 11:39:16,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:39:16,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 3441 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-06 11:39:16,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:39:16,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:39:16,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:39:16,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836854049] [2021-11-06 11:39:16,827 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:39:16,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598325316] [2021-11-06 11:39:16,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598325316] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:39:16,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:39:16,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 11:39:16,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33902039] [2021-11-06 11:39:16,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 11:39:16,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:39:16,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 11:39:16,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 11:39:16,828 INFO L87 Difference]: Start difference. First operand 2211 states and 2773 transitions. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:39:37,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:39:37,251 INFO L93 Difference]: Finished difference Result 6154 states and 7706 transitions. [2021-11-06 11:39:37,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 11:39:37,252 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 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 166 [2021-11-06 11:39:37,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:39:37,258 INFO L225 Difference]: With dead ends: 6154 [2021-11-06 11:39:37,258 INFO L226 Difference]: Without dead ends: 4016 [2021-11-06 11:39:37,261 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-06 11:39:37,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4016 states. [2021-11-06 11:39:37,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4016 to 2259. [2021-11-06 11:39:37,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2259 states, 2205 states have (on average 1.2848072562358277) internal successors, (2833), 2258 states have internal predecessors, (2833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:39:37,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2259 states to 2259 states and 2833 transitions. [2021-11-06 11:39:37,345 INFO L78 Accepts]: Start accepts. Automaton has 2259 states and 2833 transitions. Word has length 166 [2021-11-06 11:39:37,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:39:37,345 INFO L470 AbstractCegarLoop]: Abstraction has 2259 states and 2833 transitions. [2021-11-06 11:39:37,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:39:37,346 INFO L276 IsEmpty]: Start isEmpty. Operand 2259 states and 2833 transitions. [2021-11-06 11:39:37,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-06 11:39:37,347 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:39:37,347 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:39:37,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-06 11:39:37,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-06 11:39:37,568 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 11:39:37,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:39:37,568 INFO L85 PathProgramCache]: Analyzing trace with hash -76596988, now seen corresponding path program 1 times [2021-11-06 11:39:37,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:39:37,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058415863] [2021-11-06 11:39:37,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:39:37,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:39:37,619 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:39:37,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [465046544] [2021-11-06 11:39:37,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:39:37,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:39:37,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:39:37,621 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:39:37,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-06 11:39:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:39:38,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 3435 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 11:39:38,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:39:39,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:39:39,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:39:39,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058415863] [2021-11-06 11:39:39,185 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:39:39,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465046544] [2021-11-06 11:39:39,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465046544] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:39:39,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:39:39,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 11:39:39,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144419301] [2021-11-06 11:39:39,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 11:39:39,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:39:39,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 11:39:39,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 11:39:39,188 INFO L87 Difference]: Start difference. First operand 2259 states and 2833 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:39:39,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:39:39,694 INFO L93 Difference]: Finished difference Result 4487 states and 5628 transitions. [2021-11-06 11:39:39,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 11:39:39,695 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 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 166 [2021-11-06 11:39:39,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:39:39,698 INFO L225 Difference]: With dead ends: 4487 [2021-11-06 11:39:39,698 INFO L226 Difference]: Without dead ends: 2307 [2021-11-06 11:39:39,700 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:39:39,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2307 states. [2021-11-06 11:39:39,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2307 to 2283. [2021-11-06 11:39:39,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2283 states, 2229 states have (on average 1.281740690892777) internal successors, (2857), 2282 states have internal predecessors, (2857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:39:39,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2283 states to 2283 states and 2857 transitions. [2021-11-06 11:39:39,766 INFO L78 Accepts]: Start accepts. Automaton has 2283 states and 2857 transitions. Word has length 166 [2021-11-06 11:39:39,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:39:39,766 INFO L470 AbstractCegarLoop]: Abstraction has 2283 states and 2857 transitions. [2021-11-06 11:39:39,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:39:39,766 INFO L276 IsEmpty]: Start isEmpty. Operand 2283 states and 2857 transitions. [2021-11-06 11:39:39,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-06 11:39:39,767 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:39:39,768 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:39:39,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-06 11:39:39,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:39:39,984 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 11:39:39,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:39:39,984 INFO L85 PathProgramCache]: Analyzing trace with hash -266922624, now seen corresponding path program 1 times [2021-11-06 11:39:39,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:39:39,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789490728] [2021-11-06 11:39:39,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:39:39,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:39:40,039 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:39:40,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [575819690] [2021-11-06 11:39:40,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:39:40,040 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:39:40,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:39:40,041 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:39:40,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-06 11:39:41,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:39:41,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 3425 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-06 11:39:41,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:39:41,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:39:41,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:39:41,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789490728] [2021-11-06 11:39:41,780 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:39:41,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575819690] [2021-11-06 11:39:41,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575819690] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:39:41,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:39:41,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 11:39:41,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646696936] [2021-11-06 11:39:41,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 11:39:41,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:39:41,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 11:39:41,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:39:41,782 INFO L87 Difference]: Start difference. First operand 2283 states and 2857 transitions. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:39:42,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:39:42,842 INFO L93 Difference]: Finished difference Result 6422 states and 8018 transitions. [2021-11-06 11:39:42,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 11:39:42,844 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 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 166 [2021-11-06 11:39:42,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:39:42,848 INFO L225 Difference]: With dead ends: 6422 [2021-11-06 11:39:42,848 INFO L226 Difference]: Without dead ends: 4227 [2021-11-06 11:39:42,850 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-06 11:39:42,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4227 states. [2021-11-06 11:39:42,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4227 to 2379. [2021-11-06 11:39:42,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2379 states, 2325 states have (on average 1.2804301075268818) internal successors, (2977), 2378 states have internal predecessors, (2977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:39:42,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2379 states to 2379 states and 2977 transitions. [2021-11-06 11:39:42,923 INFO L78 Accepts]: Start accepts. Automaton has 2379 states and 2977 transitions. Word has length 166 [2021-11-06 11:39:42,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:39:42,924 INFO L470 AbstractCegarLoop]: Abstraction has 2379 states and 2977 transitions. [2021-11-06 11:39:42,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:39:42,924 INFO L276 IsEmpty]: Start isEmpty. Operand 2379 states and 2977 transitions. [2021-11-06 11:39:42,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-06 11:39:42,925 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:39:42,925 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:39:42,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-06 11:39:43,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-06 11:39:43,151 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 11:39:43,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:39:43,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1151624642, now seen corresponding path program 1 times [2021-11-06 11:39:43,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:39:43,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121245239] [2021-11-06 11:39:43,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:39:43,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:39:43,205 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:39:43,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [100162542] [2021-11-06 11:39:43,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:39:43,205 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:39:43,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:39:43,206 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:39:43,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-06 11:39:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:39:44,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 3422 conjuncts, 59 conjunts are in the unsatisfiable core [2021-11-06 11:39:44,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:39:45,896 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 [2021-11-06 11:39:45,909 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 [2021-11-06 11:39:46,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:39:46,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:39:46,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121245239] [2021-11-06 11:39:46,270 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:39:46,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100162542] [2021-11-06 11:39:46,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100162542] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:39:46,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:39:46,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-06 11:39:46,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525873007] [2021-11-06 11:39:46,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-06 11:39:46,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:39:46,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-06 11:39:46,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-06 11:39:46,271 INFO L87 Difference]: Start difference. First operand 2379 states and 2977 transitions. Second operand has 11 states, 11 states have (on average 15.090909090909092) internal successors, (166), 11 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:39:56,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:39:56,931 INFO L93 Difference]: Finished difference Result 6973 states and 8722 transitions. [2021-11-06 11:39:56,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-06 11:39:56,931 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.090909090909092) internal successors, (166), 11 states have internal predecessors, (166), 0 states have call successors, (0), 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 166 [2021-11-06 11:39:56,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:39:56,938 INFO L225 Difference]: With dead ends: 6973 [2021-11-06 11:39:56,938 INFO L226 Difference]: Without dead ends: 4708 [2021-11-06 11:39:56,941 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=183, Invalid=467, Unknown=0, NotChecked=0, Total=650 [2021-11-06 11:39:56,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4708 states. [2021-11-06 11:39:57,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4708 to 2387. [2021-11-06 11:39:57,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2387 states, 2333 states have (on average 1.2794684954993572) internal successors, (2985), 2386 states have internal predecessors, (2985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:39:57,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2387 states to 2387 states and 2985 transitions. [2021-11-06 11:39:57,025 INFO L78 Accepts]: Start accepts. Automaton has 2387 states and 2985 transitions. Word has length 166 [2021-11-06 11:39:57,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:39:57,025 INFO L470 AbstractCegarLoop]: Abstraction has 2387 states and 2985 transitions. [2021-11-06 11:39:57,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.090909090909092) internal successors, (166), 11 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:39:57,025 INFO L276 IsEmpty]: Start isEmpty. Operand 2387 states and 2985 transitions. [2021-11-06 11:39:57,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-06 11:39:57,026 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:39:57,026 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:39:57,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-06 11:39:57,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:39:57,240 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 11:39:57,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:39:57,240 INFO L85 PathProgramCache]: Analyzing trace with hash -540589057, now seen corresponding path program 1 times [2021-11-06 11:39:57,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:39:57,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16971691] [2021-11-06 11:39:57,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:39:57,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:39:57,290 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:39:57,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [808556546] [2021-11-06 11:39:57,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:39:57,291 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:39:57,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:39:57,292 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:39:57,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-06 11:39:58,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:39:58,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 3424 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-06 11:39:58,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:39:59,886 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 [2021-11-06 11:39:59,892 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 [2021-11-06 11:40:00,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:40:00,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:40:00,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16971691] [2021-11-06 11:40:00,337 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:40:00,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808556546] [2021-11-06 11:40:00,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808556546] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:40:00,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:40:00,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-06 11:40:00,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214836229] [2021-11-06 11:40:00,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-06 11:40:00,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:40:00,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-06 11:40:00,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-06 11:40:00,338 INFO L87 Difference]: Start difference. First operand 2387 states and 2985 transitions. Second operand has 10 states, 10 states have (on average 16.8) internal successors, (168), 10 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:40:18,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:40:18,186 INFO L93 Difference]: Finished difference Result 6897 states and 8612 transitions. [2021-11-06 11:40:18,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-06 11:40:18,186 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.8) internal successors, (168), 10 states have internal predecessors, (168), 0 states have call successors, (0), 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 168 [2021-11-06 11:40:18,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:40:18,191 INFO L225 Difference]: With dead ends: 6897 [2021-11-06 11:40:18,191 INFO L226 Difference]: Without dead ends: 4614 [2021-11-06 11:40:18,194 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=196, Invalid=506, Unknown=0, NotChecked=0, Total=702 [2021-11-06 11:40:18,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4614 states. [2021-11-06 11:40:18,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4614 to 4307. [2021-11-06 11:40:18,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4307 states, 4253 states have (on average 1.2823889019515635) internal successors, (5454), 4306 states have internal predecessors, (5454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:40:18,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4307 states to 4307 states and 5454 transitions. [2021-11-06 11:40:18,345 INFO L78 Accepts]: Start accepts. Automaton has 4307 states and 5454 transitions. Word has length 168 [2021-11-06 11:40:18,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:40:18,345 INFO L470 AbstractCegarLoop]: Abstraction has 4307 states and 5454 transitions. [2021-11-06 11:40:18,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.8) internal successors, (168), 10 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:40:18,346 INFO L276 IsEmpty]: Start isEmpty. Operand 4307 states and 5454 transitions. [2021-11-06 11:40:18,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-06 11:40:18,347 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:40:18,347 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:40:18,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-06 11:40:18,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:40:18,563 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 11:40:18,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:40:18,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1164645824, now seen corresponding path program 1 times [2021-11-06 11:40:18,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:40:18,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889419821] [2021-11-06 11:40:18,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:40:18,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:40:18,614 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:40:18,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1862379863] [2021-11-06 11:40:18,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:40:18,615 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:40:18,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:40:18,616 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:40:18,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-06 11:40:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:40:20,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 3449 conjuncts, 109 conjunts are in the unsatisfiable core [2021-11-06 11:40:20,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:40:21,667 INFO L354 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2021-11-06 11:40:21,667 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 25 treesize of output 23 [2021-11-06 11:40:21,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-06 11:40:22,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:40:22,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:40:22,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889419821] [2021-11-06 11:40:22,900 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:40:22,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862379863] [2021-11-06 11:40:22,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862379863] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:40:22,900 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:40:22,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-06 11:40:22,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710228917] [2021-11-06 11:40:22,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-06 11:40:22,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:40:22,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-06 11:40:22,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2021-11-06 11:40:22,902 INFO L87 Difference]: Start difference. First operand 4307 states and 5454 transitions. Second operand has 20 states, 20 states have (on average 8.45) internal successors, (169), 20 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:41:59,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:41:59,289 INFO L93 Difference]: Finished difference Result 20533 states and 25616 transitions. [2021-11-06 11:41:59,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-11-06 11:41:59,290 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.45) internal successors, (169), 20 states have internal predecessors, (169), 0 states have call successors, (0), 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 169 [2021-11-06 11:41:59,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:41:59,310 INFO L225 Difference]: With dead ends: 20533 [2021-11-06 11:41:59,310 INFO L226 Difference]: Without dead ends: 16519 [2021-11-06 11:41:59,316 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4096 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=2118, Invalid=9012, Unknown=0, NotChecked=0, Total=11130 [2021-11-06 11:41:59,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16519 states. [2021-11-06 11:41:59,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16519 to 4308. [2021-11-06 11:41:59,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4308 states, 4254 states have (on average 1.282322519981194) internal successors, (5455), 4307 states have internal predecessors, (5455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:41:59,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4308 states to 4308 states and 5455 transitions. [2021-11-06 11:41:59,508 INFO L78 Accepts]: Start accepts. Automaton has 4308 states and 5455 transitions. Word has length 169 [2021-11-06 11:41:59,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:41:59,508 INFO L470 AbstractCegarLoop]: Abstraction has 4308 states and 5455 transitions. [2021-11-06 11:41:59,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.45) internal successors, (169), 20 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:41:59,509 INFO L276 IsEmpty]: Start isEmpty. Operand 4308 states and 5455 transitions. [2021-11-06 11:41:59,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-06 11:41:59,510 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:41:59,510 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:41:59,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-06 11:41:59,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:41:59,711 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 11:41:59,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:41:59,711 INFO L85 PathProgramCache]: Analyzing trace with hash 41422726, now seen corresponding path program 1 times [2021-11-06 11:41:59,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:41:59,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574802694] [2021-11-06 11:41:59,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:41:59,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:41:59,765 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:41:59,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [226782804] [2021-11-06 11:41:59,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:41:59,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:41:59,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:41:59,767 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:41:59,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-06 11:42:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:42:01,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 3454 conjuncts, 93 conjunts are in the unsatisfiable core [2021-11-06 11:42:01,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:42:02,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:42:02,122 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 49 treesize of output 37 [2021-11-06 11:42:02,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:42:02,131 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 34 treesize of output 22 [2021-11-06 11:42:02,542 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 45 treesize of output 33 [2021-11-06 11:42:02,550 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 30 treesize of output 18 [2021-11-06 11:42:02,645 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 7 treesize of output 3 [2021-11-06 11:42:02,653 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 7 treesize of output 3 [2021-11-06 11:42:02,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:42:02,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:42:02,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574802694] [2021-11-06 11:42:02,984 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:42:02,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226782804] [2021-11-06 11:42:02,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226782804] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:42:02,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:42:02,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-06 11:42:02,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706278841] [2021-11-06 11:42:02,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-06 11:42:02,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:42:02,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-06 11:42:02,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-06 11:42:02,985 INFO L87 Difference]: Start difference. First operand 4308 states and 5455 transitions. Second operand has 12 states, 12 states have (on average 14.25) internal successors, (171), 12 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:42:42,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:42:42,061 INFO L93 Difference]: Finished difference Result 10790 states and 13569 transitions. [2021-11-06 11:42:42,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-06 11:42:42,062 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 14.25) internal successors, (171), 12 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2021-11-06 11:42:42,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:42:42,073 INFO L225 Difference]: With dead ends: 10790 [2021-11-06 11:42:42,073 INFO L226 Difference]: Without dead ends: 8547 [2021-11-06 11:42:42,077 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2021-11-06 11:42:42,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8547 states. [2021-11-06 11:42:42,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8547 to 4335. [2021-11-06 11:42:42,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4335 states, 4281 states have (on average 1.2819434711516) internal successors, (5488), 4334 states have internal predecessors, (5488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:42:42,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4335 states to 4335 states and 5488 transitions. [2021-11-06 11:42:42,301 INFO L78 Accepts]: Start accepts. Automaton has 4335 states and 5488 transitions. Word has length 171 [2021-11-06 11:42:42,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:42:42,301 INFO L470 AbstractCegarLoop]: Abstraction has 4335 states and 5488 transitions. [2021-11-06 11:42:42,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.25) internal successors, (171), 12 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:42:42,301 INFO L276 IsEmpty]: Start isEmpty. Operand 4335 states and 5488 transitions. [2021-11-06 11:42:42,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-06 11:42:42,302 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:42:42,303 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:42:42,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-06 11:42:42,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:42:42,503 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 11:42:42,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:42:42,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1899159288, now seen corresponding path program 1 times [2021-11-06 11:42:42,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:42:42,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327639899] [2021-11-06 11:42:42,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:42:42,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:42:42,556 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:42:42,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1233305729] [2021-11-06 11:42:42,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:42:42,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:42:42,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:42:42,558 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:42:42,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-06 11:42:43,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:42:44,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 3449 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-06 11:42:44,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:42:44,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:42:44,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:42:44,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327639899] [2021-11-06 11:42:44,583 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:42:44,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233305729] [2021-11-06 11:42:44,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233305729] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:42:44,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:42:44,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 11:42:44,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336277798] [2021-11-06 11:42:44,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 11:42:44,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:42:44,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 11:42:44,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 11:42:44,585 INFO L87 Difference]: Start difference. First operand 4335 states and 5488 transitions. Second operand has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:43:04,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:43:04,755 INFO L93 Difference]: Finished difference Result 11138 states and 14031 transitions. [2021-11-06 11:43:04,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 11:43:04,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2021-11-06 11:43:04,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:43:04,765 INFO L225 Difference]: With dead ends: 11138 [2021-11-06 11:43:04,765 INFO L226 Difference]: Without dead ends: 6851 [2021-11-06 11:43:04,769 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 11:43:04,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6851 states. [2021-11-06 11:43:04,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6851 to 4477. [2021-11-06 11:43:04,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4477 states, 4423 states have (on average 1.2726656115758535) internal successors, (5629), 4476 states have internal predecessors, (5629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:43:04,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4477 states to 4477 states and 5629 transitions. [2021-11-06 11:43:04,946 INFO L78 Accepts]: Start accepts. Automaton has 4477 states and 5629 transitions. Word has length 171 [2021-11-06 11:43:04,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:43:04,947 INFO L470 AbstractCegarLoop]: Abstraction has 4477 states and 5629 transitions. [2021-11-06 11:43:04,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:43:04,947 INFO L276 IsEmpty]: Start isEmpty. Operand 4477 states and 5629 transitions. [2021-11-06 11:43:04,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-06 11:43:04,949 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:43:04,949 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:43:04,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-06 11:43:05,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-06 11:43:05,153 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 11:43:05,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:43:05,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1401114310, now seen corresponding path program 1 times [2021-11-06 11:43:05,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:43:05,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591811344] [2021-11-06 11:43:05,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:43:05,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:43:05,206 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:43:05,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [252471033] [2021-11-06 11:43:05,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:43:05,207 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:43:05,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:43:05,208 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:43:05,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-06 11:43:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:43:07,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 3454 conjuncts, 187 conjunts are in the unsatisfiable core [2021-11-06 11:43:07,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:43:09,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:43:09,048 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 49 treesize of output 37 [2021-11-06 11:43:09,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:43:09,056 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 34 treesize of output 22 [2021-11-06 11:43:09,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:43:09,613 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 49 treesize of output 37 [2021-11-06 11:43:09,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:43:09,622 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 34 treesize of output 22 [2021-11-06 11:43:09,799 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 9 treesize of output 3 [2021-11-06 11:43:09,815 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 9 treesize of output 3 [2021-11-06 11:43:10,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:43:10,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:43:10,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591811344] [2021-11-06 11:43:10,348 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:43:10,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252471033] [2021-11-06 11:43:10,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252471033] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:43:10,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:43:10,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-06 11:43:10,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461105467] [2021-11-06 11:43:10,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-06 11:43:10,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:43:10,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-06 11:43:10,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-11-06 11:43:10,350 INFO L87 Difference]: Start difference. First operand 4477 states and 5629 transitions. Second operand has 19 states, 19 states have (on average 9.0) internal successors, (171), 19 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:44:15,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:44:15,388 INFO L93 Difference]: Finished difference Result 16892 states and 21002 transitions. [2021-11-06 11:44:15,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-06 11:44:15,389 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.0) internal successors, (171), 19 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2021-11-06 11:44:15,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:44:15,409 INFO L225 Difference]: With dead ends: 16892 [2021-11-06 11:44:15,410 INFO L226 Difference]: Without dead ends: 12676 [2021-11-06 11:44:15,416 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1021 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=769, Invalid=3013, Unknown=0, NotChecked=0, Total=3782 [2021-11-06 11:44:15,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12676 states. [2021-11-06 11:44:15,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12676 to 5863. [2021-11-06 11:44:15,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5863 states, 5809 states have (on average 1.2690652435875365) internal successors, (7372), 5862 states have internal predecessors, (7372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:44:15,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5863 states to 5863 states and 7372 transitions. [2021-11-06 11:44:15,719 INFO L78 Accepts]: Start accepts. Automaton has 5863 states and 7372 transitions. Word has length 171 [2021-11-06 11:44:15,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:44:15,720 INFO L470 AbstractCegarLoop]: Abstraction has 5863 states and 7372 transitions. [2021-11-06 11:44:15,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.0) internal successors, (171), 19 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:44:15,720 INFO L276 IsEmpty]: Start isEmpty. Operand 5863 states and 7372 transitions. [2021-11-06 11:44:15,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-06 11:44:15,722 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:44:15,722 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:44:15,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-06 11:44:15,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-06 11:44:15,923 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 11:44:15,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:44:15,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1785476081, now seen corresponding path program 1 times [2021-11-06 11:44:15,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:44:15,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077368744] [2021-11-06 11:44:15,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:44:15,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:44:15,979 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:44:15,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1749972114] [2021-11-06 11:44:15,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:44:15,979 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:44:15,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:44:15,980 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:44:15,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-06 11:44:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:44:17,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 3476 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-06 11:44:17,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:44:18,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:44:18,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:44:18,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077368744] [2021-11-06 11:44:18,072 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:44:18,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749972114] [2021-11-06 11:44:18,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749972114] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:44:18,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:44:18,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 11:44:18,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737237394] [2021-11-06 11:44:18,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 11:44:18,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:44:18,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 11:44:18,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 11:44:18,073 INFO L87 Difference]: Start difference. First operand 5863 states and 7372 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:44:19,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:44:19,225 INFO L93 Difference]: Finished difference Result 17294 states and 21763 transitions. [2021-11-06 11:44:19,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 11:44:19,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 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 172 [2021-11-06 11:44:19,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:44:19,238 INFO L225 Difference]: With dead ends: 17294 [2021-11-06 11:44:19,239 INFO L226 Difference]: Without dead ends: 11555 [2021-11-06 11:44:19,244 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 11:44:19,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11555 states. [2021-11-06 11:44:19,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11555 to 5916. [2021-11-06 11:44:19,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5916 states, 5862 states have (on average 1.266632548618219) internal successors, (7425), 5915 states have internal predecessors, (7425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:44:19,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5916 states to 5916 states and 7425 transitions. [2021-11-06 11:44:19,555 INFO L78 Accepts]: Start accepts. Automaton has 5916 states and 7425 transitions. Word has length 172 [2021-11-06 11:44:19,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:44:19,555 INFO L470 AbstractCegarLoop]: Abstraction has 5916 states and 7425 transitions. [2021-11-06 11:44:19,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:44:19,556 INFO L276 IsEmpty]: Start isEmpty. Operand 5916 states and 7425 transitions. [2021-11-06 11:44:19,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-06 11:44:19,558 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:44:19,558 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:44:19,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-06 11:44:19,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:44:19,771 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 11:44:19,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:44:19,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1221855463, now seen corresponding path program 1 times [2021-11-06 11:44:19,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:44:19,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021595587] [2021-11-06 11:44:19,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:44:19,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:44:19,855 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:44:19,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1321773099] [2021-11-06 11:44:19,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:44:19,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:44:19,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:44:19,857 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:44:19,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-06 11:44:21,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:44:21,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 3479 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-06 11:44:21,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:44:22,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:44:22,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:44:22,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021595587] [2021-11-06 11:44:22,078 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:44:22,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321773099] [2021-11-06 11:44:22,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321773099] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:44:22,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:44:22,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 11:44:22,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627113061] [2021-11-06 11:44:22,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 11:44:22,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:44:22,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 11:44:22,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 11:44:22,080 INFO L87 Difference]: Start difference. First operand 5916 states and 7425 transitions. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:44:26,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:44:26,182 INFO L93 Difference]: Finished difference Result 20356 states and 25485 transitions. [2021-11-06 11:44:26,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-06 11:44:26,182 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 0 states have call successors, (0), 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 172 [2021-11-06 11:44:26,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:44:26,196 INFO L225 Difference]: With dead ends: 20356 [2021-11-06 11:44:26,196 INFO L226 Difference]: Without dead ends: 14487 [2021-11-06 11:44:26,202 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-11-06 11:44:26,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14487 states. [2021-11-06 11:44:26,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14487 to 5299. [2021-11-06 11:44:26,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5299 states, 5245 states have (on average 1.2625357483317445) internal successors, (6622), 5298 states have internal predecessors, (6622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:44:26,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5299 states to 5299 states and 6622 transitions. [2021-11-06 11:44:26,496 INFO L78 Accepts]: Start accepts. Automaton has 5299 states and 6622 transitions. Word has length 172 [2021-11-06 11:44:26,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:44:26,497 INFO L470 AbstractCegarLoop]: Abstraction has 5299 states and 6622 transitions. [2021-11-06 11:44:26,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:44:26,497 INFO L276 IsEmpty]: Start isEmpty. Operand 5299 states and 6622 transitions. [2021-11-06 11:44:26,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-06 11:44:26,499 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:44:26,499 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:44:26,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-06 11:44:26,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:44:26,715 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 11:44:26,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:44:26,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1834159147, now seen corresponding path program 1 times [2021-11-06 11:44:26,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:44:26,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413980021] [2021-11-06 11:44:26,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:44:26,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:44:26,769 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:44:26,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [535510518] [2021-11-06 11:44:26,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:44:26,769 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:44:26,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:44:26,771 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:44:26,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-06 11:44:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:44:29,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 3434 conjuncts, 82 conjunts are in the unsatisfiable core [2021-11-06 11:44:29,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:44:31,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:44:31,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:44:31,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413980021] [2021-11-06 11:44:31,051 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:44:31,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535510518] [2021-11-06 11:44:31,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535510518] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:44:31,051 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:44:31,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-06 11:44:31,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632465120] [2021-11-06 11:44:31,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-06 11:44:31,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:44:31,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-06 11:44:31,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-06 11:44:31,052 INFO L87 Difference]: Start difference. First operand 5299 states and 6622 transitions. Second operand has 14 states, 14 states have (on average 12.285714285714286) internal successors, (172), 14 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:44:55,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:44:55,916 INFO L93 Difference]: Finished difference Result 22080 states and 27552 transitions. [2021-11-06 11:44:55,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-11-06 11:44:55,917 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.285714285714286) internal successors, (172), 14 states have internal predecessors, (172), 0 states have call successors, (0), 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 172 [2021-11-06 11:44:55,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:44:55,940 INFO L225 Difference]: With dead ends: 22080 [2021-11-06 11:44:55,940 INFO L226 Difference]: Without dead ends: 17399 [2021-11-06 11:44:55,946 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1302 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=799, Invalid=3491, Unknown=0, NotChecked=0, Total=4290 [2021-11-06 11:44:55,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17399 states. [2021-11-06 11:44:56,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17399 to 5341. [2021-11-06 11:44:56,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5341 states, 5287 states have (on average 1.263287308492529) internal successors, (6679), 5340 states have internal predecessors, (6679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:44:56,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5341 states to 5341 states and 6679 transitions. [2021-11-06 11:44:56,289 INFO L78 Accepts]: Start accepts. Automaton has 5341 states and 6679 transitions. Word has length 172 [2021-11-06 11:44:56,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:44:56,289 INFO L470 AbstractCegarLoop]: Abstraction has 5341 states and 6679 transitions. [2021-11-06 11:44:56,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.285714285714286) internal successors, (172), 14 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:44:56,289 INFO L276 IsEmpty]: Start isEmpty. Operand 5341 states and 6679 transitions. [2021-11-06 11:44:56,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-06 11:44:56,292 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:44:56,292 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:44:56,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-11-06 11:44:56,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-06 11:44:56,499 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 11:44:56,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:44:56,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1223686865, now seen corresponding path program 1 times [2021-11-06 11:44:56,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:44:56,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812205711] [2021-11-06 11:44:56,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:44:56,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:44:56,558 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:44:56,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1785344470] [2021-11-06 11:44:56,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:44:56,559 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:44:56,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:44:56,560 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:44:56,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-06 11:44:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:44:58,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 3439 conjuncts, 129 conjunts are in the unsatisfiable core [2021-11-06 11:44:58,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:44:58,602 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 [2021-11-06 11:44:59,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:44:59,162 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 31 treesize of output 15 [2021-11-06 11:44:59,597 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-06 11:44:59,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 20 [2021-11-06 11:44:59,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:44:59,639 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 27 treesize of output 15 [2021-11-06 11:44:59,897 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-06 11:44:59,898 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 [2021-11-06 11:45:00,041 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-06 11:45:00,041 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 29 treesize of output 28 [2021-11-06 11:45:05,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:45:05,745 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 25 treesize of output 24 [2021-11-06 11:45:09,208 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 47 treesize of output 29 [2021-11-06 11:45:09,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:45:09,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:45:09,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812205711] [2021-11-06 11:45:09,683 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:45:09,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785344470] [2021-11-06 11:45:09,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785344470] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:45:09,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:45:09,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-06 11:45:09,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896057785] [2021-11-06 11:45:09,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-06 11:45:09,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:45:09,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-06 11:45:09,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-11-06 11:45:09,684 INFO L87 Difference]: Start difference. First operand 5341 states and 6679 transitions. Second operand has 18 states, 18 states have (on average 9.666666666666666) internal successors, (174), 18 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:45:36,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:45:36,913 INFO L93 Difference]: Finished difference Result 10670 states and 13344 transitions. [2021-11-06 11:45:36,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-06 11:45:36,916 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 9.666666666666666) internal successors, (174), 18 states have internal predecessors, (174), 0 states have call successors, (0), 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 174 [2021-11-06 11:45:36,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:45:36,924 INFO L225 Difference]: With dead ends: 10670 [2021-11-06 11:45:36,925 INFO L226 Difference]: Without dead ends: 5342 [2021-11-06 11:45:36,931 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 156 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2021-11-06 11:45:36,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5342 states. [2021-11-06 11:45:37,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5342 to 5342. [2021-11-06 11:45:37,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5342 states, 5288 states have (on average 1.2632375189107412) internal successors, (6680), 5341 states have internal predecessors, (6680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:45:37,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5342 states to 5342 states and 6680 transitions. [2021-11-06 11:45:37,277 INFO L78 Accepts]: Start accepts. Automaton has 5342 states and 6680 transitions. Word has length 174 [2021-11-06 11:45:37,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:45:37,277 INFO L470 AbstractCegarLoop]: Abstraction has 5342 states and 6680 transitions. [2021-11-06 11:45:37,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.666666666666666) internal successors, (174), 18 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:45:37,277 INFO L276 IsEmpty]: Start isEmpty. Operand 5342 states and 6680 transitions. [2021-11-06 11:45:37,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-06 11:45:37,279 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:45:37,279 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:45:37,314 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-11-06 11:45:37,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-06 11:45:37,495 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 11:45:37,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:45:37,496 INFO L85 PathProgramCache]: Analyzing trace with hash -184039085, now seen corresponding path program 1 times [2021-11-06 11:45:37,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:45:37,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900897488] [2021-11-06 11:45:37,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:45:37,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:45:37,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:45:37,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:45:37,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:45:37,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900897488] [2021-11-06 11:45:37,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900897488] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:45:37,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:45:37,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 11:45:37,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397839132] [2021-11-06 11:45:37,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 11:45:37,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:45:37,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 11:45:37,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 11:45:37,639 INFO L87 Difference]: Start difference. First operand 5342 states and 6680 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:45:38,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:45:38,012 INFO L93 Difference]: Finished difference Result 10665 states and 13339 transitions. [2021-11-06 11:45:38,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 11:45:38,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 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 174 [2021-11-06 11:45:38,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:45:38,017 INFO L225 Difference]: With dead ends: 10665 [2021-11-06 11:45:38,017 INFO L226 Difference]: Without dead ends: 5340 [2021-11-06 11:45:38,020 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 11:45:38,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5340 states. [2021-11-06 11:45:38,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5340 to 5339. [2021-11-06 11:45:38,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5339 states, 5285 states have (on average 1.2631977294228949) internal successors, (6676), 5338 states have internal predecessors, (6676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:45:38,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5339 states to 5339 states and 6676 transitions. [2021-11-06 11:45:38,296 INFO L78 Accepts]: Start accepts. Automaton has 5339 states and 6676 transitions. Word has length 174 [2021-11-06 11:45:38,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:45:38,296 INFO L470 AbstractCegarLoop]: Abstraction has 5339 states and 6676 transitions. [2021-11-06 11:45:38,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:45:38,297 INFO L276 IsEmpty]: Start isEmpty. Operand 5339 states and 6676 transitions. [2021-11-06 11:45:38,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-06 11:45:38,298 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:45:38,298 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:45:38,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-06 11:45:38,299 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 11:45:38,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:45:38,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1371030461, now seen corresponding path program 1 times [2021-11-06 11:45:38,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:45:38,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525111011] [2021-11-06 11:45:38,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:45:38,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:45:38,413 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:45:38,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2054816979] [2021-11-06 11:45:38,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:45:38,413 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:45:38,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:45:38,414 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:45:38,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-06 11:45:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:45:40,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 3456 conjuncts, 93 conjunts are in the unsatisfiable core [2021-11-06 11:45:40,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:45:41,884 INFO L354 Elim1Store]: treesize reduction 19, result has 44.1 percent of original size [2021-11-06 11:45:41,884 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 23 treesize of output 30 [2021-11-06 11:45:46,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-06 11:45:50,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:45:50,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:45:50,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525111011] [2021-11-06 11:45:50,921 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:45:50,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054816979] [2021-11-06 11:45:50,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054816979] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:45:50,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:45:50,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-06 11:45:50,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188241550] [2021-11-06 11:45:50,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-06 11:45:50,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:45:50,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-06 11:45:50,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-11-06 11:45:50,923 INFO L87 Difference]: Start difference. First operand 5339 states and 6676 transitions. Second operand has 15 states, 15 states have (on average 11.8) internal successors, (177), 15 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:47:43,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:47:43,742 INFO L93 Difference]: Finished difference Result 23992 states and 30073 transitions. [2021-11-06 11:47:43,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-06 11:47:43,744 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 11.8) internal successors, (177), 15 states have internal predecessors, (177), 0 states have call successors, (0), 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 177 [2021-11-06 11:47:43,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:47:43,794 INFO L225 Difference]: With dead ends: 23992 [2021-11-06 11:47:43,794 INFO L226 Difference]: Without dead ends: 21306 [2021-11-06 11:47:43,801 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 843 ImplicationChecksByTransitivity, 27.7s TimeCoverageRelationStatistics Valid=778, Invalid=2523, Unknown=5, NotChecked=0, Total=3306 [2021-11-06 11:47:43,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21306 states. [2021-11-06 11:47:44,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21306 to 5339. [2021-11-06 11:47:44,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5339 states, 5285 states have (on average 1.2626300851466414) internal successors, (6673), 5338 states have internal predecessors, (6673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:47:44,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5339 states to 5339 states and 6673 transitions. [2021-11-06 11:47:44,172 INFO L78 Accepts]: Start accepts. Automaton has 5339 states and 6673 transitions. Word has length 177 [2021-11-06 11:47:44,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:47:44,173 INFO L470 AbstractCegarLoop]: Abstraction has 5339 states and 6673 transitions. [2021-11-06 11:47:44,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.8) internal successors, (177), 15 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:47:44,173 INFO L276 IsEmpty]: Start isEmpty. Operand 5339 states and 6673 transitions. [2021-11-06 11:47:44,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-06 11:47:44,174 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:47:44,175 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:47:44,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-06 11:47:44,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:47:44,394 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 11:47:44,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:47:44,395 INFO L85 PathProgramCache]: Analyzing trace with hash 861557371, now seen corresponding path program 1 times [2021-11-06 11:47:44,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:47:44,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749347696] [2021-11-06 11:47:44,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:47:44,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:47:44,454 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:47:44,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [165996312] [2021-11-06 11:47:44,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:47:44,455 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:47:44,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:47:44,456 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:47:44,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-06 11:47:47,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:47:47,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 3461 conjuncts, 91 conjunts are in the unsatisfiable core [2021-11-06 11:47:47,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:47:47,068 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 [2021-11-06 11:47:47,453 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-06 11:47:47,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 17 treesize of output 21 [2021-11-06 11:47:47,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-06 11:47:47,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:47:47,914 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 45 treesize of output 32 [2021-11-06 11:47:48,439 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-06 11:47:48,440 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 48 treesize of output 35 [2021-11-06 11:47:48,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:47:48,491 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 43 treesize of output 30 [2021-11-06 11:47:48,871 INFO L354 Elim1Store]: treesize reduction 8, result has 65.2 percent of original size [2021-11-06 11:47:48,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 24 [2021-11-06 11:47:49,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:47:49,109 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-06 11:47:49,110 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 57 treesize of output 36 [2021-11-06 11:47:49,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:47:49,294 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-06 11:47:49,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 12 [2021-11-06 11:47:49,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:47:49,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:47:49,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749347696] [2021-11-06 11:47:49,870 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:47:49,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165996312] [2021-11-06 11:47:49,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165996312] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:47:49,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:47:49,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-06 11:47:49,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949812296] [2021-11-06 11:47:49,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-06 11:47:49,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:47:49,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-06 11:47:49,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-11-06 11:47:49,872 INFO L87 Difference]: Start difference. First operand 5339 states and 6673 transitions. Second operand has 15 states, 15 states have (on average 11.8) internal successors, (177), 15 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:48:10,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:48:10,827 INFO L93 Difference]: Finished difference Result 10641 states and 13303 transitions. [2021-11-06 11:48:10,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-06 11:48:10,827 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 11.8) internal successors, (177), 15 states have internal predecessors, (177), 0 states have call successors, (0), 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 177 [2021-11-06 11:48:10,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:48:10,832 INFO L225 Difference]: With dead ends: 10641 [2021-11-06 11:48:10,832 INFO L226 Difference]: Without dead ends: 5350 [2021-11-06 11:48:10,835 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=146, Invalid=454, Unknown=0, NotChecked=0, Total=600 [2021-11-06 11:48:10,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5350 states. [2021-11-06 11:48:11,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5350 to 5339. [2021-11-06 11:48:11,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5339 states, 5285 states have (on average 1.2624408703878902) internal successors, (6672), 5338 states have internal predecessors, (6672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:48:11,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5339 states to 5339 states and 6672 transitions. [2021-11-06 11:48:11,175 INFO L78 Accepts]: Start accepts. Automaton has 5339 states and 6672 transitions. Word has length 177 [2021-11-06 11:48:11,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:48:11,175 INFO L470 AbstractCegarLoop]: Abstraction has 5339 states and 6672 transitions. [2021-11-06 11:48:11,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.8) internal successors, (177), 15 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:48:11,176 INFO L276 IsEmpty]: Start isEmpty. Operand 5339 states and 6672 transitions. [2021-11-06 11:48:11,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-06 11:48:11,177 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:48:11,177 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:48:11,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-11-06 11:48:11,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:48:11,387 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 11:48:11,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:48:11,387 INFO L85 PathProgramCache]: Analyzing trace with hash 683416597, now seen corresponding path program 1 times [2021-11-06 11:48:11,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:48:11,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489730537] [2021-11-06 11:48:11,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:48:11,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:48:11,452 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:48:11,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1454531334] [2021-11-06 11:48:11,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:48:11,452 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:48:11,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:48:11,453 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:48:11,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-06 11:48:13,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:48:13,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 3466 conjuncts, 92 conjunts are in the unsatisfiable core [2021-11-06 11:48:13,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:48:14,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:48:14,551 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 52 treesize of output 40 [2021-11-06 11:48:14,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:48:14,563 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 37 treesize of output 25 [2021-11-06 11:48:15,410 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 48 treesize of output 36 [2021-11-06 11:48:15,420 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 33 treesize of output 21 [2021-11-06 11:48:15,501 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 36 treesize of output 28 [2021-11-06 11:48:15,508 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 28 treesize of output 20 [2021-11-06 11:48:15,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:48:15,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:48:15,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489730537] [2021-11-06 11:48:15,960 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:48:15,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454531334] [2021-11-06 11:48:15,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454531334] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:48:15,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:48:15,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-06 11:48:15,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431267413] [2021-11-06 11:48:15,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-06 11:48:15,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:48:15,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-06 11:48:15,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-11-06 11:48:15,962 INFO L87 Difference]: Start difference. First operand 5339 states and 6672 transitions. Second operand has 16 states, 16 states have (on average 11.1875) internal successors, (179), 16 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:49:19,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 11:49:19,027 INFO L93 Difference]: Finished difference Result 16267 states and 20175 transitions. [2021-11-06 11:49:19,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-06 11:49:19,032 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.1875) internal successors, (179), 16 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2021-11-06 11:49:19,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 11:49:19,045 INFO L225 Difference]: With dead ends: 16267 [2021-11-06 11:49:19,045 INFO L226 Difference]: Without dead ends: 11133 [2021-11-06 11:49:19,051 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=529, Invalid=1921, Unknown=0, NotChecked=0, Total=2450 [2021-11-06 11:49:19,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11133 states. [2021-11-06 11:49:19,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11133 to 10158. [2021-11-06 11:49:19,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10158 states, 10104 states have (on average 1.2633610451306414) internal successors, (12765), 10157 states have internal predecessors, (12765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:49:19,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10158 states to 10158 states and 12765 transitions. [2021-11-06 11:49:19,713 INFO L78 Accepts]: Start accepts. Automaton has 10158 states and 12765 transitions. Word has length 179 [2021-11-06 11:49:19,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 11:49:19,713 INFO L470 AbstractCegarLoop]: Abstraction has 10158 states and 12765 transitions. [2021-11-06 11:49:19,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.1875) internal successors, (179), 16 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 11:49:19,713 INFO L276 IsEmpty]: Start isEmpty. Operand 10158 states and 12765 transitions. [2021-11-06 11:49:19,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-06 11:49:19,716 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 11:49:19,716 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 11:49:19,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-11-06 11:49:19,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:49:19,917 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 51 more)] === [2021-11-06 11:49:19,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 11:49:19,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1691374805, now seen corresponding path program 1 times [2021-11-06 11:49:19,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 11:49:19,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223735052] [2021-11-06 11:49:19,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:49:19,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 11:49:19,970 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 11:49:19,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1803363825] [2021-11-06 11:49:19,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 11:49:19,970 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 11:49:19,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 11:49:19,971 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 11:49:19,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-06 11:49:22,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 11:49:22,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 3466 conjuncts, 174 conjunts are in the unsatisfiable core [2021-11-06 11:49:22,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 11:49:23,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-06 11:49:23,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:49:23,905 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 60 treesize of output 48 [2021-11-06 11:49:23,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 11:49:23,914 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 45 treesize of output 33 [2021-11-06 11:49:33,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 11:49:33,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 11:49:33,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223735052] [2021-11-06 11:49:33,599 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 11:49:33,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803363825] [2021-11-06 11:49:33,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803363825] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 11:49:33,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 11:49:33,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-06 11:49:33,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429898764] [2021-11-06 11:49:33,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-06 11:49:33,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 11:49:33,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-06 11:49:33,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=656, Unknown=1, NotChecked=0, Total=756 [2021-11-06 11:49:33,600 INFO L87 Difference]: Start difference. First operand 10158 states and 12765 transitions. Second operand has 28 states, 28 states have (on average 6.392857142857143) internal successors, (179), 28 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Killed by 15