./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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_pop_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 71774aeec0d0f8840a1b18b633767b26c38c9eb9d26569d28cdf01c44c9881ac --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 14:02:21,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 14:02:21,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 14:02:21,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 14:02:21,855 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 14:02:21,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 14:02:21,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 14:02:21,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 14:02:21,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 14:02:21,862 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 14:02:21,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 14:02:21,864 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 14:02:21,865 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 14:02:21,866 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 14:02:21,867 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 14:02:21,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 14:02:21,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 14:02:21,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 14:02:21,871 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 14:02:21,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 14:02:21,874 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 14:02:21,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 14:02:21,876 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 14:02:21,877 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 14:02:21,880 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 14:02:21,880 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 14:02:21,880 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 14:02:21,881 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 14:02:21,882 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 14:02:21,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 14:02:21,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 14:02:21,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 14:02:21,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 14:02:21,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 14:02:21,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 14:02:21,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 14:02:21,888 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 14:02:21,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 14:02:21,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 14:02:21,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 14:02:21,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 14:02:21,891 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 14:02:21,909 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 14:02:21,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 14:02:21,910 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 14:02:21,910 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 14:02:21,911 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 14:02:21,911 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 14:02:21,912 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 14:02:21,912 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 14:02:21,913 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 14:02:21,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 14:02:21,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 14:02:21,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 14:02:21,914 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 14:02:21,914 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 14:02:21,914 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 14:02:21,915 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 14:02:21,915 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 14:02:21,915 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 14:02:21,915 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 14:02:21,916 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 14:02:21,916 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 14:02:21,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:02:21,916 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 14:02:21,917 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 14:02:21,917 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 14:02:21,917 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 14:02:21,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 14:02:21,918 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 14:02:21,918 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 14:02:21,918 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 14:02:21,919 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 14:02:21,919 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71774aeec0d0f8840a1b18b633767b26c38c9eb9d26569d28cdf01c44c9881ac [2021-12-22 14:02:22,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 14:02:22,145 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 14:02:22,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 14:02:22,150 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 14:02:22,151 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 14:02:22,152 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i [2021-12-22 14:02:22,235 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1b8f75d2/536273ff01864270bfb03928fb2b0e05/FLAG0807669f1 [2021-12-22 14:02:22,814 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 14:02:22,814 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i [2021-12-22 14:02:22,848 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1b8f75d2/536273ff01864270bfb03928fb2b0e05/FLAG0807669f1 [2021-12-22 14:02:23,028 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1b8f75d2/536273ff01864270bfb03928fb2b0e05 [2021-12-22 14:02:23,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 14:02:23,034 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 14:02:23,037 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 14:02:23,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 14:02:23,040 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 14:02:23,041 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:02:23" (1/1) ... [2021-12-22 14:02:23,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11eac487 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:02:23, skipping insertion in model container [2021-12-22 14:02:23,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:02:23" (1/1) ... [2021-12-22 14:02:23,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 14:02:23,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 14:02:23,374 WARN L230 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_pop_harness.i[4496,4509] [2021-12-22 14:02:23,381 WARN L230 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_pop_harness.i[4556,4569] [2021-12-22 14:02:24,046 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,052 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,054 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,055 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,057 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,068 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,077 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,079 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,080 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,081 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,081 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,082 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,082 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,287 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-22 14:02:24,288 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-22 14:02:24,289 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-22 14:02:24,290 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-22 14:02:24,291 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-22 14:02:24,292 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-22 14:02:24,292 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-22 14:02:24,293 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-22 14:02:24,293 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-22 14:02:24,294 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-22 14:02:24,388 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-22 14:02:24,409 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,436 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,532 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,533 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,534 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,535 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,535 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,536 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,538 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,540 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,540 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,541 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,541 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,541 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,541 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,545 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,545 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,545 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,546 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,554 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,554 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,569 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,571 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,571 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,601 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:02:24,636 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 14:02:24,659 WARN L230 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_pop_harness.i[4496,4509] [2021-12-22 14:02:24,661 WARN L230 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_pop_harness.i[4556,4569] [2021-12-22 14:02:24,702 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,705 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,705 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,706 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,706 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,715 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,716 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,717 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,717 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,718 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,718 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,718 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,718 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,750 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-22 14:02:24,750 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-22 14:02:24,751 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-22 14:02:24,752 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-22 14:02:24,753 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-22 14:02:24,753 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-22 14:02:24,753 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-22 14:02:24,754 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-22 14:02:24,754 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-22 14:02:24,754 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-22 14:02:24,774 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-22 14:02:24,797 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,802 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,847 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,847 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,848 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,848 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,848 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,849 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,849 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,849 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,850 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,850 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,850 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,851 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,851 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,852 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,852 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,853 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,853 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,855 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,856 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,860 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,862 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,863 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:24,872 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:02:25,005 INFO L208 MainTranslator]: Completed translation [2021-12-22 14:02:25,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:02:25 WrapperNode [2021-12-22 14:02:25,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 14:02:25,007 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 14:02:25,007 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 14:02:25,007 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 14:02:25,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:02:25" (1/1) ... [2021-12-22 14:02:25,125 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:02:25" (1/1) ... [2021-12-22 14:02:25,223 INFO L137 Inliner]: procedures = 697, calls = 1918, calls flagged for inlining = 60, calls inlined = 15, statements flattened = 1033 [2021-12-22 14:02:25,224 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 14:02:25,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 14:02:25,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 14:02:25,225 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 14:02:25,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:02:25" (1/1) ... [2021-12-22 14:02:25,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:02:25" (1/1) ... [2021-12-22 14:02:25,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:02:25" (1/1) ... [2021-12-22 14:02:25,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:02:25" (1/1) ... [2021-12-22 14:02:25,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:02:25" (1/1) ... [2021-12-22 14:02:25,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:02:25" (1/1) ... [2021-12-22 14:02:25,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:02:25" (1/1) ... [2021-12-22 14:02:25,354 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 14:02:25,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 14:02:25,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 14:02:25,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 14:02:25,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:02:25" (1/1) ... [2021-12-22 14:02:25,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:02:25,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:02:25,393 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) [2021-12-22 14:02:25,414 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 [2021-12-22 14:02:25,429 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2021-12-22 14:02:25,430 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2021-12-22 14:02:25,430 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-12-22 14:02:25,430 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-12-22 14:02:25,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 14:02:25,431 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-12-22 14:02:25,431 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-12-22 14:02:25,431 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-22 14:02:25,431 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-22 14:02:25,431 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-22 14:02:25,431 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-22 14:02:25,431 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2021-12-22 14:02:25,432 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2021-12-22 14:02:25,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-22 14:02:25,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 14:02:25,432 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-22 14:02:25,432 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-22 14:02:25,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-22 14:02:25,433 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-22 14:02:25,433 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_node [2021-12-22 14:02:25,434 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_node [2021-12-22 14:02:25,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 14:02:25,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 14:02:25,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 14:02:25,436 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2021-12-22 14:02:25,437 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2021-12-22 14:02:25,437 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-12-22 14:02:25,437 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-12-22 14:02:25,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 14:02:25,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 14:02:25,443 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-22 14:02:25,443 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-22 14:02:25,443 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-22 14:02:25,444 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-22 14:02:25,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-22 14:02:25,444 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-12-22 14:02:25,444 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-12-22 14:02:25,444 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-12-22 14:02:25,444 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-12-22 14:02:25,444 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-12-22 14:02:25,444 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-12-22 14:02:25,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-22 14:02:25,445 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-22 14:02:25,445 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 14:02:25,445 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 14:02:25,445 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-12-22 14:02:25,445 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-12-22 14:02:25,445 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2021-12-22 14:02:25,446 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2021-12-22 14:02:25,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 14:02:25,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 14:02:25,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 14:02:25,446 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2021-12-22 14:02:25,446 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2021-12-22 14:02:25,446 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-22 14:02:25,446 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-22 14:02:25,447 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-22 14:02:25,447 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-22 14:02:25,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 14:02:25,447 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-12-22 14:02:25,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-12-22 14:02:25,447 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2021-12-22 14:02:25,447 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2021-12-22 14:02:25,447 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-22 14:02:25,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-22 14:02:25,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 14:02:25,448 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at [2021-12-22 14:02:25,448 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at [2021-12-22 14:02:25,840 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 14:02:25,842 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 14:02:27,373 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 14:02:27,382 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 14:02:27,382 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-12-22 14:02:27,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:02:27 BoogieIcfgContainer [2021-12-22 14:02:27,385 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 14:02:27,386 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 14:02:27,386 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 14:02:27,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 14:02:27,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:02:23" (1/3) ... [2021-12-22 14:02:27,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ae2ad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:02:27, skipping insertion in model container [2021-12-22 14:02:27,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:02:25" (2/3) ... [2021-12-22 14:02:27,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ae2ad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:02:27, skipping insertion in model container [2021-12-22 14:02:27,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:02:27" (3/3) ... [2021-12-22 14:02:27,391 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_pop_harness.i [2021-12-22 14:02:27,395 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 14:02:27,396 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 14:02:27,435 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 14:02:27,440 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 [2021-12-22 14:02:27,441 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 14:02:27,464 INFO L276 IsEmpty]: Start isEmpty. Operand has 448 states, 263 states have (on average 1.2623574144486691) internal successors, (332), 266 states have internal predecessors, (332), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) [2021-12-22 14:02:27,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-22 14:02:27,476 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:02:27,476 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:02:27,477 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:02:27,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:02:27,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1140837343, now seen corresponding path program 1 times [2021-12-22 14:02:27,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:02:27,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862492587] [2021-12-22 14:02:27,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:02:27,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:02:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:27,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:02:27,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:27,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-22 14:02:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:27,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 14:02:27,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:28,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 14:02:28,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:28,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:02:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:28,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 14:02:28,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:28,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 14:02:28,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:28,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:02:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:28,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 14:02:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:28,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-22 14:02:28,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:28,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 14:02:28,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:28,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-22 14:02:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:28,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:02:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:28,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-22 14:02:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:28,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-22 14:02:28,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:28,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-22 14:02:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:28,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 14:02:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:28,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 14:02:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:28,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-22 14:02:28,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:28,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-22 14:02:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:28,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-22 14:02:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:28,240 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-12-22 14:02:28,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:02:28,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862492587] [2021-12-22 14:02:28,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862492587] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:02:28,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:02:28,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 14:02:28,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45873597] [2021-12-22 14:02:28,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:02:28,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:02:28,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:02:28,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:02:28,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:02:28,285 INFO L87 Difference]: Start difference. First operand has 448 states, 263 states have (on average 1.2623574144486691) internal successors, (332), 266 states have internal predecessors, (332), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-22 14:02:29,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:02:29,787 INFO L93 Difference]: Finished difference Result 1063 states and 1806 transitions. [2021-12-22 14:02:29,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:02:29,790 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 133 [2021-12-22 14:02:29,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:02:29,805 INFO L225 Difference]: With dead ends: 1063 [2021-12-22 14:02:29,805 INFO L226 Difference]: Without dead ends: 621 [2021-12-22 14:02:29,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:02:29,820 INFO L933 BasicCegarLoop]: 690 mSDtfsCounter, 465 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 765 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 765 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-22 14:02:29,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 961 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [765 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-22 14:02:29,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2021-12-22 14:02:29,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 441. [2021-12-22 14:02:29,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 257 states have (on average 1.2373540856031129) internal successors, (318), 260 states have internal predecessors, (318), 156 states have call successors, (156), 27 states have call predecessors, (156), 26 states have return successors, (154), 154 states have call predecessors, (154), 154 states have call successors, (154) [2021-12-22 14:02:29,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 628 transitions. [2021-12-22 14:02:29,913 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 628 transitions. Word has length 133 [2021-12-22 14:02:29,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:02:29,914 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 628 transitions. [2021-12-22 14:02:29,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-22 14:02:29,914 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 628 transitions. [2021-12-22 14:02:29,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-22 14:02:29,918 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:02:29,918 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:02:29,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 14:02:29,919 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:02:29,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:02:29,919 INFO L85 PathProgramCache]: Analyzing trace with hash 826891299, now seen corresponding path program 1 times [2021-12-22 14:02:29,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:02:29,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316542824] [2021-12-22 14:02:29,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:02:29,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:02:29,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:30,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:02:30,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:30,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-22 14:02:30,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:30,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 14:02:30,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:30,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 14:02:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:30,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:02:30,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:30,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 14:02:30,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:30,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 14:02:30,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:30,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:02:30,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:30,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 14:02:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:30,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-22 14:02:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:30,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 14:02:30,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:30,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-22 14:02:30,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:30,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:02:30,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:30,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-22 14:02:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:30,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-22 14:02:30,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:30,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-22 14:02:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:30,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 14:02:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:30,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 14:02:30,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:30,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-22 14:02:30,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:30,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-22 14:02:30,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:30,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-22 14:02:30,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:30,397 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2021-12-22 14:02:30,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:02:30,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316542824] [2021-12-22 14:02:30,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316542824] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:02:30,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194610803] [2021-12-22 14:02:30,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:02:30,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:02:30,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:02:30,404 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) [2021-12-22 14:02:30,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 14:02:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:30,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 2444 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-22 14:02:30,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:02:31,150 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-12-22 14:02:31,151 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:02:31,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194610803] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:02:31,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 14:02:31,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-12-22 14:02:31,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63775542] [2021-12-22 14:02:31,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:02:31,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:02:31,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:02:31,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:02:31,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-12-22 14:02:31,154 INFO L87 Difference]: Start difference. First operand 441 states and 628 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-22 14:02:32,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:02:32,502 INFO L93 Difference]: Finished difference Result 848 states and 1225 transitions. [2021-12-22 14:02:32,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 14:02:32,503 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 133 [2021-12-22 14:02:32,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:02:32,510 INFO L225 Difference]: With dead ends: 848 [2021-12-22 14:02:32,510 INFO L226 Difference]: Without dead ends: 443 [2021-12-22 14:02:32,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-12-22 14:02:32,515 INFO L933 BasicCegarLoop]: 568 mSDtfsCounter, 643 mSDsluCounter, 1626 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 2194 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-22 14:02:32,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [665 Valid, 2194 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-22 14:02:32,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-12-22 14:02:32,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2021-12-22 14:02:32,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 258 states have (on average 1.2364341085271318) internal successors, (319), 262 states have internal predecessors, (319), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (167), 154 states have call predecessors, (167), 154 states have call successors, (167) [2021-12-22 14:02:32,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 642 transitions. [2021-12-22 14:02:32,556 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 642 transitions. Word has length 133 [2021-12-22 14:02:32,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:02:32,557 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 642 transitions. [2021-12-22 14:02:32,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-22 14:02:32,558 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 642 transitions. [2021-12-22 14:02:32,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-22 14:02:32,560 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:02:32,560 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:02:32,590 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-22 14:02:32,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:02:32,785 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:02:32,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:02:32,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1886231881, now seen corresponding path program 1 times [2021-12-22 14:02:32,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:02:32,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242484970] [2021-12-22 14:02:32,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:02:32,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:02:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:32,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:02:32,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:32,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-22 14:02:32,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:32,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 14:02:32,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:32,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 14:02:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:33,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:02:33,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:33,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 14:02:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:33,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 14:02:33,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:33,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:02:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:33,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 14:02:33,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:33,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-22 14:02:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:33,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:02:33,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:33,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 14:02:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:33,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-22 14:02:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:33,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:02:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:33,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-22 14:02:33,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:33,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 14:02:33,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:33,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-22 14:02:33,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:33,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-22 14:02:33,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:33,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-22 14:02:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:33,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-22 14:02:33,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:33,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-22 14:02:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:33,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 14:02:33,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:33,232 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-12-22 14:02:33,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:02:33,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242484970] [2021-12-22 14:02:33,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242484970] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:02:33,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69390698] [2021-12-22 14:02:33,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:02:33,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:02:33,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:02:33,234 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) [2021-12-22 14:02:33,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 14:02:33,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:33,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 2494 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-22 14:02:33,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:02:34,153 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-12-22 14:02:34,153 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:02:34,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69390698] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:02:34,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 14:02:34,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2021-12-22 14:02:34,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594344727] [2021-12-22 14:02:34,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:02:34,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 14:02:34,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:02:34,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 14:02:34,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2021-12-22 14:02:34,156 INFO L87 Difference]: Start difference. First operand 443 states and 642 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-12-22 14:02:36,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:02:36,423 INFO L93 Difference]: Finished difference Result 871 states and 1296 transitions. [2021-12-22 14:02:36,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 14:02:36,424 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 141 [2021-12-22 14:02:36,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:02:36,428 INFO L225 Difference]: With dead ends: 871 [2021-12-22 14:02:36,428 INFO L226 Difference]: Without dead ends: 464 [2021-12-22 14:02:36,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2021-12-22 14:02:36,432 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 667 mSDsluCounter, 2673 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 3238 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-22 14:02:36,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [717 Valid, 3238 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-22 14:02:36,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2021-12-22 14:02:36,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 462. [2021-12-22 14:02:36,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 274 states have (on average 1.2445255474452555) internal successors, (341), 278 states have internal predecessors, (341), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (186), 157 states have call predecessors, (186), 156 states have call successors, (186) [2021-12-22 14:02:36,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 685 transitions. [2021-12-22 14:02:36,472 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 685 transitions. Word has length 141 [2021-12-22 14:02:36,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:02:36,474 INFO L470 AbstractCegarLoop]: Abstraction has 462 states and 685 transitions. [2021-12-22 14:02:36,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-12-22 14:02:36,474 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 685 transitions. [2021-12-22 14:02:36,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-22 14:02:36,479 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:02:36,480 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:02:36,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-22 14:02:36,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-22 14:02:36,707 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:02:36,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:02:36,707 INFO L85 PathProgramCache]: Analyzing trace with hash -523305437, now seen corresponding path program 1 times [2021-12-22 14:02:36,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:02:36,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257903806] [2021-12-22 14:02:36,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:02:36,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:02:36,804 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 14:02:36,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1499864714] [2021-12-22 14:02:36,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:02:36,804 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:02:36,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:02:36,806 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) [2021-12-22 14:02:36,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-22 14:02:37,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:37,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 2635 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-22 14:02:37,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:02:37,550 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-12-22 14:02:37,550 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:02:37,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:02:37,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257903806] [2021-12-22 14:02:37,551 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 14:02:37,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499864714] [2021-12-22 14:02:37,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499864714] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:02:37,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:02:37,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 14:02:37,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814615312] [2021-12-22 14:02:37,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:02:37,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 14:02:37,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:02:37,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 14:02:37,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:02:37,553 INFO L87 Difference]: Start difference. First operand 462 states and 685 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-12-22 14:02:38,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:02:38,971 INFO L93 Difference]: Finished difference Result 896 states and 1369 transitions. [2021-12-22 14:02:38,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 14:02:38,972 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 156 [2021-12-22 14:02:38,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:02:38,976 INFO L225 Difference]: With dead ends: 896 [2021-12-22 14:02:38,976 INFO L226 Difference]: Without dead ends: 470 [2021-12-22 14:02:38,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-12-22 14:02:38,979 INFO L933 BasicCegarLoop]: 562 mSDtfsCounter, 667 mSDsluCounter, 2145 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 2707 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-22 14:02:38,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [689 Valid, 2707 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-22 14:02:38,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-12-22 14:02:39,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 462. [2021-12-22 14:02:39,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 274 states have (on average 1.2445255474452555) internal successors, (341), 278 states have internal predecessors, (341), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (186), 157 states have call predecessors, (186), 156 states have call successors, (186) [2021-12-22 14:02:39,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 685 transitions. [2021-12-22 14:02:39,025 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 685 transitions. Word has length 156 [2021-12-22 14:02:39,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:02:39,027 INFO L470 AbstractCegarLoop]: Abstraction has 462 states and 685 transitions. [2021-12-22 14:02:39,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-12-22 14:02:39,027 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 685 transitions. [2021-12-22 14:02:39,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-12-22 14:02:39,029 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:02:39,030 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:02:39,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-22 14:02:39,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:02:39,244 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:02:39,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:02:39,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1664024204, now seen corresponding path program 1 times [2021-12-22 14:02:39,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:02:39,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977559772] [2021-12-22 14:02:39,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:02:39,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:02:39,323 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 14:02:39,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1476322134] [2021-12-22 14:02:39,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:02:39,324 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:02:39,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:02:39,325 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) [2021-12-22 14:02:39,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-22 14:02:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:39,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 2707 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-22 14:02:39,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:02:40,173 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-12-22 14:02:40,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:02:40,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:02:40,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977559772] [2021-12-22 14:02:40,174 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 14:02:40,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476322134] [2021-12-22 14:02:40,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476322134] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:02:40,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:02:40,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 14:02:40,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033566057] [2021-12-22 14:02:40,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:02:40,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 14:02:40,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:02:40,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 14:02:40,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:02:40,175 INFO L87 Difference]: Start difference. First operand 462 states and 685 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2021-12-22 14:02:43,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:02:43,119 INFO L93 Difference]: Finished difference Result 906 states and 1373 transitions. [2021-12-22 14:02:43,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 14:02:43,120 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) Word has length 172 [2021-12-22 14:02:43,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:02:43,125 INFO L225 Difference]: With dead ends: 906 [2021-12-22 14:02:43,126 INFO L226 Difference]: Without dead ends: 480 [2021-12-22 14:02:43,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-12-22 14:02:43,133 INFO L933 BasicCegarLoop]: 541 mSDtfsCounter, 732 mSDsluCounter, 3103 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 3644 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-22 14:02:43,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [782 Valid, 3644 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-22 14:02:43,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-12-22 14:02:43,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 462. [2021-12-22 14:02:43,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 274 states have (on average 1.2445255474452555) internal successors, (341), 278 states have internal predecessors, (341), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (186), 157 states have call predecessors, (186), 156 states have call successors, (186) [2021-12-22 14:02:43,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 685 transitions. [2021-12-22 14:02:43,161 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 685 transitions. Word has length 172 [2021-12-22 14:02:43,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:02:43,162 INFO L470 AbstractCegarLoop]: Abstraction has 462 states and 685 transitions. [2021-12-22 14:02:43,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2021-12-22 14:02:43,162 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 685 transitions. [2021-12-22 14:02:43,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-12-22 14:02:43,165 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:02:43,166 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:02:43,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-22 14:02:43,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:02:43,386 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:02:43,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:02:43,386 INFO L85 PathProgramCache]: Analyzing trace with hash -294824304, now seen corresponding path program 2 times [2021-12-22 14:02:43,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:02:43,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333321367] [2021-12-22 14:02:43,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:02:43,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:02:43,471 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 14:02:43,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [503755116] [2021-12-22 14:02:43,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 14:02:43,472 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:02:43,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:02:43,473 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) [2021-12-22 14:02:43,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-22 14:02:44,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 14:02:44,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 14:02:44,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 2848 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-22 14:02:44,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:02:44,426 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-12-22 14:02:44,426 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:02:44,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:02:44,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333321367] [2021-12-22 14:02:44,427 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 14:02:44,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503755116] [2021-12-22 14:02:44,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503755116] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:02:44,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:02:44,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 14:02:44,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672518812] [2021-12-22 14:02:44,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:02:44,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 14:02:44,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:02:44,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 14:02:44,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:02:44,429 INFO L87 Difference]: Start difference. First operand 462 states and 685 transitions. Second operand has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2021-12-22 14:02:45,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:02:45,988 INFO L93 Difference]: Finished difference Result 858 states and 1293 transitions. [2021-12-22 14:02:45,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 14:02:45,989 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 187 [2021-12-22 14:02:45,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:02:45,993 INFO L225 Difference]: With dead ends: 858 [2021-12-22 14:02:45,993 INFO L226 Difference]: Without dead ends: 464 [2021-12-22 14:02:45,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-12-22 14:02:45,996 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 655 mSDsluCounter, 2178 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 2745 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-22 14:02:45,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [677 Valid, 2745 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-22 14:02:45,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2021-12-22 14:02:46,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2021-12-22 14:02:46,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 275 states have (on average 1.2436363636363637) internal successors, (342), 280 states have internal predecessors, (342), 158 states have call successors, (158), 27 states have call predecessors, (158), 29 states have return successors, (197), 157 states have call predecessors, (197), 156 states have call successors, (197) [2021-12-22 14:02:46,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 697 transitions. [2021-12-22 14:02:46,034 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 697 transitions. Word has length 187 [2021-12-22 14:02:46,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:02:46,036 INFO L470 AbstractCegarLoop]: Abstraction has 464 states and 697 transitions. [2021-12-22 14:02:46,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2021-12-22 14:02:46,036 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 697 transitions. [2021-12-22 14:02:46,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-12-22 14:02:46,039 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:02:46,039 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:02:46,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-22 14:02:46,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:02:46,255 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:02:46,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:02:46,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1770519646, now seen corresponding path program 1 times [2021-12-22 14:02:46,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:02:46,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19456303] [2021-12-22 14:02:46,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:02:46,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:02:46,355 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 14:02:46,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1040468017] [2021-12-22 14:02:46,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:02:46,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:02:46,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:02:46,357 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) [2021-12-22 14:02:46,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-22 14:02:46,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:46,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 3039 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-22 14:02:46,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:02:47,283 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2021-12-22 14:02:47,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:02:47,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:02:47,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19456303] [2021-12-22 14:02:47,284 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 14:02:47,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040468017] [2021-12-22 14:02:47,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040468017] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:02:47,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:02:47,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 14:02:47,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575186902] [2021-12-22 14:02:47,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:02:47,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 14:02:47,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:02:47,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 14:02:47,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-22 14:02:47,286 INFO L87 Difference]: Start difference. First operand 464 states and 697 transitions. Second operand has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) [2021-12-22 14:02:48,439 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:02:50,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:02:50,872 INFO L93 Difference]: Finished difference Result 863 states and 1318 transitions. [2021-12-22 14:02:50,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 14:02:50,873 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) Word has length 210 [2021-12-22 14:02:50,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:02:50,876 INFO L225 Difference]: With dead ends: 863 [2021-12-22 14:02:50,876 INFO L226 Difference]: Without dead ends: 467 [2021-12-22 14:02:50,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-12-22 14:02:50,880 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 679 mSDsluCounter, 2690 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 3251 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-22 14:02:50,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [701 Valid, 3251 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-22 14:02:50,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2021-12-22 14:02:50,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 465. [2021-12-22 14:02:50,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 276 states have (on average 1.2427536231884058) internal successors, (343), 281 states have internal predecessors, (343), 158 states have call successors, (158), 27 states have call predecessors, (158), 29 states have return successors, (197), 157 states have call predecessors, (197), 156 states have call successors, (197) [2021-12-22 14:02:50,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 698 transitions. [2021-12-22 14:02:50,901 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 698 transitions. Word has length 210 [2021-12-22 14:02:50,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:02:50,902 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 698 transitions. [2021-12-22 14:02:50,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) [2021-12-22 14:02:50,902 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 698 transitions. [2021-12-22 14:02:50,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-12-22 14:02:50,904 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:02:50,904 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:02:50,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-22 14:02:51,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:02:51,120 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:02:51,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:02:51,120 INFO L85 PathProgramCache]: Analyzing trace with hash -236319775, now seen corresponding path program 1 times [2021-12-22 14:02:51,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:02:51,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307331864] [2021-12-22 14:02:51,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:02:51,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:02:51,193 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 14:02:51,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [681994959] [2021-12-22 14:02:51,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:02:51,194 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:02:51,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:02:51,195 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) [2021-12-22 14:02:51,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-22 14:02:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:51,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 2970 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-22 14:02:51,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:02:52,147 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 137 proven. 3 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-12-22 14:02:52,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 14:02:52,649 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-12-22 14:02:52,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:02:52,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307331864] [2021-12-22 14:02:52,650 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 14:02:52,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681994959] [2021-12-22 14:02:52,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681994959] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 14:02:52,650 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 14:02:52,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-12-22 14:02:52,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379350001] [2021-12-22 14:02:52,651 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 14:02:52,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 14:02:52,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:02:52,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 14:02:52,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-22 14:02:52,652 INFO L87 Difference]: Start difference. First operand 465 states and 698 transitions. Second operand has 14 states, 12 states have (on average 9.916666666666666) internal successors, (119), 14 states have internal predecessors, (119), 9 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (42), 5 states have call predecessors, (42), 9 states have call successors, (42) [2021-12-22 14:02:54,724 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:02:57,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:02:57,536 INFO L93 Difference]: Finished difference Result 881 states and 1352 transitions. [2021-12-22 14:02:57,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 14:02:57,537 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 9.916666666666666) internal successors, (119), 14 states have internal predecessors, (119), 9 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (42), 5 states have call predecessors, (42), 9 states have call successors, (42) Word has length 211 [2021-12-22 14:02:57,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:02:57,541 INFO L225 Difference]: With dead ends: 881 [2021-12-22 14:02:57,543 INFO L226 Difference]: Without dead ends: 484 [2021-12-22 14:02:57,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 411 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-12-22 14:02:57,546 INFO L933 BasicCegarLoop]: 546 mSDtfsCounter, 1085 mSDsluCounter, 4178 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 4724 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-12-22 14:02:57,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1135 Valid, 4724 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-12-22 14:02:57,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2021-12-22 14:02:57,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 478. [2021-12-22 14:02:57,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 288 states have (on average 1.25) internal successors, (360), 292 states have internal predecessors, (360), 159 states have call successors, (159), 27 states have call predecessors, (159), 29 states have return successors, (198), 159 states have call predecessors, (198), 157 states have call successors, (198) [2021-12-22 14:02:57,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 717 transitions. [2021-12-22 14:02:57,570 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 717 transitions. Word has length 211 [2021-12-22 14:02:57,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:02:57,570 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 717 transitions. [2021-12-22 14:02:57,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 9.916666666666666) internal successors, (119), 14 states have internal predecessors, (119), 9 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (42), 5 states have call predecessors, (42), 9 states have call successors, (42) [2021-12-22 14:02:57,571 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 717 transitions. [2021-12-22 14:02:57,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-12-22 14:02:57,573 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:02:57,573 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:02:57,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-22 14:02:57,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:02:57,788 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:02:57,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:02:57,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1051846891, now seen corresponding path program 2 times [2021-12-22 14:02:57,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:02:57,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540440525] [2021-12-22 14:02:57,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:02:57,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:02:57,877 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 14:02:57,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [162747892] [2021-12-22 14:02:57,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 14:02:57,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:02:57,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:02:57,879 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) [2021-12-22 14:02:57,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-22 14:02:58,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 14:02:58,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 14:02:58,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 3111 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-22 14:02:58,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:02:59,211 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-12-22 14:02:59,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:02:59,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:02:59,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540440525] [2021-12-22 14:02:59,212 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 14:02:59,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162747892] [2021-12-22 14:02:59,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162747892] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:02:59,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:02:59,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 14:02:59,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244646484] [2021-12-22 14:02:59,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:02:59,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 14:02:59,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:02:59,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 14:02:59,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-22 14:02:59,215 INFO L87 Difference]: Start difference. First operand 478 states and 717 transitions. Second operand has 10 states, 9 states have (on average 11.11111111111111) internal successors, (100), 10 states have internal predecessors, (100), 6 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) [2021-12-22 14:03:03,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:03:03,705 INFO L93 Difference]: Finished difference Result 890 states and 1355 transitions. [2021-12-22 14:03:03,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 14:03:03,706 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 11.11111111111111) internal successors, (100), 10 states have internal predecessors, (100), 6 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) Word has length 226 [2021-12-22 14:03:03,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:03:03,710 INFO L225 Difference]: With dead ends: 890 [2021-12-22 14:03:03,710 INFO L226 Difference]: Without dead ends: 480 [2021-12-22 14:03:03,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-12-22 14:03:03,713 INFO L933 BasicCegarLoop]: 540 mSDtfsCounter, 744 mSDsluCounter, 3625 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 4165 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-12-22 14:03:03,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [794 Valid, 4165 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-12-22 14:03:03,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-12-22 14:03:03,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 462. [2021-12-22 14:03:03,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 274 states have (on average 1.2445255474452555) internal successors, (341), 278 states have internal predecessors, (341), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (184), 157 states have call predecessors, (184), 156 states have call successors, (184) [2021-12-22 14:03:03,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 683 transitions. [2021-12-22 14:03:03,733 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 683 transitions. Word has length 226 [2021-12-22 14:03:03,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:03:03,734 INFO L470 AbstractCegarLoop]: Abstraction has 462 states and 683 transitions. [2021-12-22 14:03:03,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 11.11111111111111) internal successors, (100), 10 states have internal predecessors, (100), 6 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) [2021-12-22 14:03:03,734 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 683 transitions. [2021-12-22 14:03:03,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-12-22 14:03:03,737 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:03:03,737 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:03:03,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-22 14:03:03,951 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,SelfDestructingSolverStorable8 [2021-12-22 14:03:03,951 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:03:03,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:03:03,952 INFO L85 PathProgramCache]: Analyzing trace with hash 664794371, now seen corresponding path program 3 times [2021-12-22 14:03:03,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:03:03,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693475374] [2021-12-22 14:03:03,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:03:03,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:03:04,027 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 14:03:04,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [444886599] [2021-12-22 14:03:04,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-22 14:03:04,028 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:03:04,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:03:04,029 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) [2021-12-22 14:03:04,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-22 14:03:04,752 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-22 14:03:04,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 14:03:04,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 1889 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-22 14:03:04,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:03:05,104 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2021-12-22 14:03:05,104 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:03:05,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:03:05,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693475374] [2021-12-22 14:03:05,105 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 14:03:05,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444886599] [2021-12-22 14:03:05,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444886599] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:03:05,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:03:05,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:03:05,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296228236] [2021-12-22 14:03:05,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:03:05,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:03:05,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:03:05,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:03:05,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:03:05,109 INFO L87 Difference]: Start difference. First operand 462 states and 683 transitions. Second operand has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-22 14:03:05,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:03:05,357 INFO L93 Difference]: Finished difference Result 851 states and 1291 transitions. [2021-12-22 14:03:05,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 14:03:05,357 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 241 [2021-12-22 14:03:05,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:03:05,361 INFO L225 Difference]: With dead ends: 851 [2021-12-22 14:03:05,361 INFO L226 Difference]: Without dead ends: 462 [2021-12-22 14:03:05,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:03:05,364 INFO L933 BasicCegarLoop]: 591 mSDtfsCounter, 2 mSDsluCounter, 2285 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2876 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 14:03:05,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2876 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 14:03:05,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-12-22 14:03:05,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 462. [2021-12-22 14:03:05,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 274 states have (on average 1.2445255474452555) internal successors, (341), 278 states have internal predecessors, (341), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (183), 157 states have call predecessors, (183), 156 states have call successors, (183) [2021-12-22 14:03:05,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 682 transitions. [2021-12-22 14:03:05,386 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 682 transitions. Word has length 241 [2021-12-22 14:03:05,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:03:05,386 INFO L470 AbstractCegarLoop]: Abstraction has 462 states and 682 transitions. [2021-12-22 14:03:05,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-22 14:03:05,387 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 682 transitions. [2021-12-22 14:03:05,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-12-22 14:03:05,389 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:03:05,390 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:03:05,420 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-22 14:03:05,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-22 14:03:05,611 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:03:05,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:03:05,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1662762273, now seen corresponding path program 4 times [2021-12-22 14:03:05,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:03:05,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590645168] [2021-12-22 14:03:05,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:03:05,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:03:05,705 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 14:03:05,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [836473362] [2021-12-22 14:03:05,706 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-22 14:03:05,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:03:05,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:03:05,707 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) [2021-12-22 14:03:05,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-22 14:03:06,418 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-22 14:03:06,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 14:03:06,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 3393 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-22 14:03:06,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:03:06,834 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2021-12-22 14:03:06,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:03:06,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:03:06,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590645168] [2021-12-22 14:03:06,835 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 14:03:06,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836473362] [2021-12-22 14:03:06,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836473362] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:03:06,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:03:06,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 14:03:06,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309802968] [2021-12-22 14:03:06,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:03:06,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 14:03:06,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:03:06,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 14:03:06,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-22 14:03:06,837 INFO L87 Difference]: Start difference. First operand 462 states and 682 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2021-12-22 14:03:09,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:03:09,372 INFO L93 Difference]: Finished difference Result 862 states and 1283 transitions. [2021-12-22 14:03:09,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 14:03:09,373 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) Word has length 256 [2021-12-22 14:03:09,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:03:09,376 INFO L225 Difference]: With dead ends: 862 [2021-12-22 14:03:09,377 INFO L226 Difference]: Without dead ends: 474 [2021-12-22 14:03:09,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-22 14:03:09,379 INFO L933 BasicCegarLoop]: 591 mSDtfsCounter, 64 mSDsluCounter, 3424 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 4015 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-22 14:03:09,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 4015 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-22 14:03:09,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2021-12-22 14:03:09,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 474. [2021-12-22 14:03:09,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 280 states have (on average 1.2428571428571429) internal successors, (348), 284 states have internal predecessors, (348), 163 states have call successors, (163), 28 states have call predecessors, (163), 29 states have return successors, (188), 162 states have call predecessors, (188), 161 states have call successors, (188) [2021-12-22 14:03:09,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 699 transitions. [2021-12-22 14:03:09,399 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 699 transitions. Word has length 256 [2021-12-22 14:03:09,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:03:09,400 INFO L470 AbstractCegarLoop]: Abstraction has 474 states and 699 transitions. [2021-12-22 14:03:09,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2021-12-22 14:03:09,400 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 699 transitions. [2021-12-22 14:03:09,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-12-22 14:03:09,401 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:03:09,402 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:03:09,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-22 14:03:09,623 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,SelfDestructingSolverStorable10 [2021-12-22 14:03:09,623 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:03:09,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:03:09,624 INFO L85 PathProgramCache]: Analyzing trace with hash -350828385, now seen corresponding path program 1 times [2021-12-22 14:03:09,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:03:09,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778361533] [2021-12-22 14:03:09,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:03:09,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:03:09,729 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 14:03:09,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1666057471] [2021-12-22 14:03:09,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:03:09,730 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:03:09,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:03:09,731 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) [2021-12-22 14:03:09,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-22 14:03:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:03:10,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 3534 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-22 14:03:10,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:03:10,974 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2021-12-22 14:03:10,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:03:10,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:03:10,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778361533] [2021-12-22 14:03:10,975 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 14:03:10,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666057471] [2021-12-22 14:03:10,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666057471] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:03:10,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:03:10,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:03:10,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835344479] [2021-12-22 14:03:10,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:03:10,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:03:10,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:03:10,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:03:10,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:03:10,977 INFO L87 Difference]: Start difference. First operand 474 states and 699 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-22 14:03:13,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:03:13,294 INFO L93 Difference]: Finished difference Result 948 states and 1454 transitions. [2021-12-22 14:03:13,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 14:03:13,295 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 271 [2021-12-22 14:03:13,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:03:13,298 INFO L225 Difference]: With dead ends: 948 [2021-12-22 14:03:13,298 INFO L226 Difference]: Without dead ends: 510 [2021-12-22 14:03:13,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:03:13,301 INFO L933 BasicCegarLoop]: 635 mSDtfsCounter, 21 mSDsluCounter, 2320 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2955 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-22 14:03:13,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 2955 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-22 14:03:13,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2021-12-22 14:03:13,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 482. [2021-12-22 14:03:13,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 288 states have (on average 1.2430555555555556) internal successors, (358), 292 states have internal predecessors, (358), 163 states have call successors, (163), 28 states have call predecessors, (163), 29 states have return successors, (188), 162 states have call predecessors, (188), 161 states have call successors, (188) [2021-12-22 14:03:13,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 709 transitions. [2021-12-22 14:03:13,329 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 709 transitions. Word has length 271 [2021-12-22 14:03:13,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:03:13,329 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 709 transitions. [2021-12-22 14:03:13,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-22 14:03:13,329 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 709 transitions. [2021-12-22 14:03:13,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-12-22 14:03:13,331 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:03:13,331 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:03:13,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-22 14:03:13,542 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,SelfDestructingSolverStorable11 [2021-12-22 14:03:13,542 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:03:13,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:03:13,543 INFO L85 PathProgramCache]: Analyzing trace with hash -899887649, now seen corresponding path program 1 times [2021-12-22 14:03:13,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:03:13,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327688159] [2021-12-22 14:03:13,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:03:13,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:03:13,634 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 14:03:13,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [181622826] [2021-12-22 14:03:13,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:03:13,634 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:03:13,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:03:13,636 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) [2021-12-22 14:03:13,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-22 14:03:14,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:03:14,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 3528 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 14:03:14,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:03:14,799 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 238 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-12-22 14:03:14,799 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:03:14,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:03:14,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327688159] [2021-12-22 14:03:14,800 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 14:03:14,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181622826] [2021-12-22 14:03:14,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181622826] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:03:14,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:03:14,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:03:14,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106677872] [2021-12-22 14:03:14,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:03:14,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:03:14,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:03:14,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:03:14,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:03:14,802 INFO L87 Difference]: Start difference. First operand 482 states and 709 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-22 14:03:14,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:03:14,840 INFO L93 Difference]: Finished difference Result 936 states and 1412 transitions. [2021-12-22 14:03:14,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:03:14,841 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 271 [2021-12-22 14:03:14,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:03:14,845 INFO L225 Difference]: With dead ends: 936 [2021-12-22 14:03:14,845 INFO L226 Difference]: Without dead ends: 490 [2021-12-22 14:03:14,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:03:14,849 INFO L933 BasicCegarLoop]: 625 mSDtfsCounter, 3 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:03:14,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 1870 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 14:03:14,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2021-12-22 14:03:14,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 486. [2021-12-22 14:03:14,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 292 states have (on average 1.2397260273972603) internal successors, (362), 296 states have internal predecessors, (362), 163 states have call successors, (163), 28 states have call predecessors, (163), 29 states have return successors, (188), 162 states have call predecessors, (188), 161 states have call successors, (188) [2021-12-22 14:03:14,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 713 transitions. [2021-12-22 14:03:14,873 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 713 transitions. Word has length 271 [2021-12-22 14:03:14,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:03:14,873 INFO L470 AbstractCegarLoop]: Abstraction has 486 states and 713 transitions. [2021-12-22 14:03:14,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-22 14:03:14,874 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 713 transitions. [2021-12-22 14:03:14,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-12-22 14:03:14,875 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:03:14,875 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:03:14,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-22 14:03:15,091 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,SelfDestructingSolverStorable12 [2021-12-22 14:03:15,091 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:03:15,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:03:15,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1910711071, now seen corresponding path program 1 times [2021-12-22 14:03:15,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:03:15,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783246427] [2021-12-22 14:03:15,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:03:15,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:03:15,173 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 14:03:15,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [523695360] [2021-12-22 14:03:15,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:03:15,173 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:03:15,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:03:15,175 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) [2021-12-22 14:03:15,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-22 14:03:15,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:03:15,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 3518 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-22 14:03:15,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:03:16,412 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-12-22 14:03:16,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:03:16,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:03:16,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783246427] [2021-12-22 14:03:16,413 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 14:03:16,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523695360] [2021-12-22 14:03:16,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523695360] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:03:16,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:03:16,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 14:03:16,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497830001] [2021-12-22 14:03:16,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:03:16,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 14:03:16,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:03:16,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 14:03:16,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-22 14:03:16,414 INFO L87 Difference]: Start difference. First operand 486 states and 713 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 5 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-22 14:03:18,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:03:18,732 INFO L93 Difference]: Finished difference Result 943 states and 1400 transitions. [2021-12-22 14:03:18,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 14:03:18,733 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 5 states have call predecessors, (25), 4 states have call successors, (25) Word has length 271 [2021-12-22 14:03:18,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:03:18,737 INFO L225 Difference]: With dead ends: 943 [2021-12-22 14:03:18,737 INFO L226 Difference]: Without dead ends: 528 [2021-12-22 14:03:18,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-22 14:03:18,740 INFO L933 BasicCegarLoop]: 653 mSDtfsCounter, 42 mSDsluCounter, 3868 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 4521 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-22 14:03:18,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 4521 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-22 14:03:18,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-12-22 14:03:18,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 505. [2021-12-22 14:03:18,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 305 states have (on average 1.2426229508196722) internal successors, (379), 309 states have internal predecessors, (379), 168 states have call successors, (168), 28 states have call predecessors, (168), 30 states have return successors, (198), 168 states have call predecessors, (198), 166 states have call successors, (198) [2021-12-22 14:03:18,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 745 transitions. [2021-12-22 14:03:18,763 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 745 transitions. Word has length 271 [2021-12-22 14:03:18,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:03:18,764 INFO L470 AbstractCegarLoop]: Abstraction has 505 states and 745 transitions. [2021-12-22 14:03:18,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 5 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-22 14:03:18,764 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 745 transitions. [2021-12-22 14:03:18,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-12-22 14:03:18,766 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:03:18,766 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:03:18,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-22 14:03:18,987 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,SelfDestructingSolverStorable13 [2021-12-22 14:03:18,987 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:03:18,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:03:18,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1178743645, now seen corresponding path program 1 times [2021-12-22 14:03:18,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:03:18,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929132586] [2021-12-22 14:03:18,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:03:18,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:03:19,065 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 14:03:19,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1068452927] [2021-12-22 14:03:19,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:03:19,066 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:03:19,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:03:19,067 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) [2021-12-22 14:03:19,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-22 14:03:19,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:03:19,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 3515 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-22 14:03:19,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:03:20,234 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-12-22 14:03:20,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:03:20,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:03:20,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929132586] [2021-12-22 14:03:20,234 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 14:03:20,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068452927] [2021-12-22 14:03:20,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068452927] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:03:20,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:03:20,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:03:20,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672270299] [2021-12-22 14:03:20,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:03:20,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:03:20,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:03:20,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:03:20,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:03:20,236 INFO L87 Difference]: Start difference. First operand 505 states and 745 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-22 14:03:21,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:03:21,319 INFO L93 Difference]: Finished difference Result 953 states and 1415 transitions. [2021-12-22 14:03:21,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 14:03:21,320 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 271 [2021-12-22 14:03:21,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:03:21,324 INFO L225 Difference]: With dead ends: 953 [2021-12-22 14:03:21,324 INFO L226 Difference]: Without dead ends: 532 [2021-12-22 14:03:21,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:03:21,327 INFO L933 BasicCegarLoop]: 649 mSDtfsCounter, 31 mSDsluCounter, 2539 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 3188 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:03:21,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 3188 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-22 14:03:21,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-12-22 14:03:21,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 511. [2021-12-22 14:03:21,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 308 states have (on average 1.2370129870129871) internal successors, (381), 312 states have internal predecessors, (381), 171 states have call successors, (171), 28 states have call predecessors, (171), 30 states have return successors, (201), 171 states have call predecessors, (201), 169 states have call successors, (201) [2021-12-22 14:03:21,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 753 transitions. [2021-12-22 14:03:21,350 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 753 transitions. Word has length 271 [2021-12-22 14:03:21,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:03:21,350 INFO L470 AbstractCegarLoop]: Abstraction has 511 states and 753 transitions. [2021-12-22 14:03:21,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-22 14:03:21,351 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 753 transitions. [2021-12-22 14:03:21,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-12-22 14:03:21,352 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:03:21,353 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:03:21,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-22 14:03:21,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:03:21,579 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:03:21,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:03:21,580 INFO L85 PathProgramCache]: Analyzing trace with hash -957139557, now seen corresponding path program 1 times [2021-12-22 14:03:21,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:03:21,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439199040] [2021-12-22 14:03:21,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:03:21,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:03:21,655 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 14:03:21,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [293353288] [2021-12-22 14:03:21,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:03:21,656 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:03:21,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:03:21,657 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) [2021-12-22 14:03:21,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-22 14:03:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:03:22,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 3512 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-22 14:03:22,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:03:22,824 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-12-22 14:03:22,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:03:22,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:03:22,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439199040] [2021-12-22 14:03:22,825 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 14:03:22,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293353288] [2021-12-22 14:03:22,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293353288] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:03:22,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:03:22,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 14:03:22,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596318660] [2021-12-22 14:03:22,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:03:22,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:03:22,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:03:22,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:03:22,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:03:22,826 INFO L87 Difference]: Start difference. First operand 511 states and 753 transitions. Second operand has 5 states, 4 states have (on average 27.75) internal successors, (111), 5 states have internal predecessors, (111), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 2 states have call predecessors, (27), 3 states have call successors, (27)