./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_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_remove_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 1ebada516f0ccae5e55b91f6e0fe5802f70171054dc79c047f46877ad506c65e --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 14:02:42,875 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 14:02:42,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 14:02:42,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 14:02:42,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 14:02:42,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 14:02:42,944 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 14:02:42,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 14:02:42,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 14:02:42,951 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 14:02:42,952 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 14:02:42,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 14:02:42,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 14:02:42,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 14:02:42,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 14:02:42,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 14:02:42,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 14:02:42,960 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 14:02:42,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 14:02:42,966 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 14:02:42,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 14:02:42,968 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 14:02:42,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 14:02:42,969 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 14:02:42,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 14:02:42,973 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 14:02:42,973 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 14:02:42,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 14:02:42,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 14:02:42,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 14:02:42,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 14:02:42,976 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 14:02:42,977 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 14:02:42,978 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 14:02:42,980 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 14:02:42,980 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 14:02:42,980 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 14:02:42,980 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 14:02:42,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 14:02:42,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 14:02:42,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 14:02:42,982 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 14:02:43,005 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 14:02:43,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 14:02:43,006 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 14:02:43,006 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 14:02:43,006 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 14:02:43,007 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 14:02:43,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 14:02:43,007 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 14:02:43,007 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 14:02:43,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 14:02:43,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 14:02:43,008 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 14:02:43,009 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 14:02:43,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 14:02:43,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 14:02:43,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 14:02:43,009 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 14:02:43,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 14:02:43,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 14:02:43,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 14:02:43,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 14:02:43,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:02:43,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 14:02:43,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 14:02:43,011 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 14:02:43,011 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 14:02:43,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 14:02:43,011 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 14:02:43,011 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 14:02:43,011 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 14:02:43,011 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 14:02:43,012 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ebada516f0ccae5e55b91f6e0fe5802f70171054dc79c047f46877ad506c65e [2021-12-22 14:02:43,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 14:02:43,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 14:02:43,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 14:02:43,256 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 14:02:43,256 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 14:02:43,257 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i [2021-12-22 14:02:43,310 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bc48a332/a94ba9bb2043421da300c95855be38e8/FLAGc49387a64 [2021-12-22 14:02:43,883 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 14:02:43,883 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i [2021-12-22 14:02:43,916 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bc48a332/a94ba9bb2043421da300c95855be38e8/FLAGc49387a64 [2021-12-22 14:02:44,329 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bc48a332/a94ba9bb2043421da300c95855be38e8 [2021-12-22 14:02:44,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 14:02:44,333 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 14:02:44,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 14:02:44,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 14:02:44,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 14:02:44,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:02:44" (1/1) ... [2021-12-22 14:02:44,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e5ead9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:02:44, skipping insertion in model container [2021-12-22 14:02:44,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:02:44" (1/1) ... [2021-12-22 14:02:44,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 14:02:44,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 14:02:44,646 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_remove_harness.i[4499,4512] [2021-12-22 14:02:44,651 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_remove_harness.i[4559,4572] [2021-12-22 14:02:45,120 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,121 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,121 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,122 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,122 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,130 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,132 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,133 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,134 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,135 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,136 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,136 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,136 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,398 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-22 14:02:45,401 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-22 14:02:45,405 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-22 14:02:45,406 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-22 14:02:45,407 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-22 14:02:45,407 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-22 14:02:45,408 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-22 14:02:45,409 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-22 14:02:45,410 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-22 14:02:45,417 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-22 14:02:45,519 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-22 14:02:45,534 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,538 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,630 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,631 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,632 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,632 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,632 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,632 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,634 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,635 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,635 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,635 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,635 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,636 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,636 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,638 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,638 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,640 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,641 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,646 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,646 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,656 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,657 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,657 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,673 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,674 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,674 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,678 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:02:45,708 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 14:02:45,726 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_remove_harness.i[4499,4512] [2021-12-22 14:02:45,727 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_remove_harness.i[4559,4572] [2021-12-22 14:02:45,765 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,770 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,771 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,771 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,771 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,779 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,780 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,780 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,781 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,781 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,782 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,782 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,782 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,818 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-22 14:02:45,819 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-22 14:02:45,819 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-22 14:02:45,820 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-22 14:02:45,821 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-22 14:02:45,821 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-22 14:02:45,821 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-22 14:02:45,822 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-22 14:02:45,822 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-22 14:02:45,822 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-22 14:02:45,839 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-22 14:02:45,852 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,855 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,877 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,878 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,878 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,879 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,879 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,879 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,879 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,880 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,880 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,881 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,881 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,881 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,881 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,882 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,883 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,883 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,883 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,885 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,885 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,891 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,892 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,892 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,898 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,899 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,899 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 14:02:45,901 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:02:46,121 INFO L208 MainTranslator]: Completed translation [2021-12-22 14:02:46,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:02:46 WrapperNode [2021-12-22 14:02:46,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 14:02:46,124 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 14:02:46,124 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 14:02:46,124 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 14:02:46,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:02:46" (1/1) ... [2021-12-22 14:02:46,219 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:02:46" (1/1) ... [2021-12-22 14:02:46,297 INFO L137 Inliner]: procedures = 697, calls = 1921, calls flagged for inlining = 60, calls inlined = 15, statements flattened = 1060 [2021-12-22 14:02:46,298 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 14:02:46,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 14:02:46,298 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 14:02:46,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 14:02:46,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:02:46" (1/1) ... [2021-12-22 14:02:46,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:02:46" (1/1) ... [2021-12-22 14:02:46,319 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:02:46" (1/1) ... [2021-12-22 14:02:46,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:02:46" (1/1) ... [2021-12-22 14:02:46,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:02:46" (1/1) ... [2021-12-22 14:02:46,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:02:46" (1/1) ... [2021-12-22 14:02:46,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:02:46" (1/1) ... [2021-12-22 14:02:46,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 14:02:46,412 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 14:02:46,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 14:02:46,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 14:02:46,413 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:02:46" (1/1) ... [2021-12-22 14:02:46,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:02:46,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:02:46,478 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 14:02:46,495 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 14:02:46,508 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2021-12-22 14:02:46,508 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2021-12-22 14:02:46,508 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-12-22 14:02:46,508 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-12-22 14:02:46,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 14:02:46,508 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-12-22 14:02:46,509 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-12-22 14:02:46,509 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-22 14:02:46,509 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-22 14:02:46,510 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-22 14:02:46,510 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-22 14:02:46,510 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2021-12-22 14:02:46,510 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2021-12-22 14:02:46,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-22 14:02:46,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 14:02:46,513 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-22 14:02:46,513 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-22 14:02:46,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-22 14:02:46,513 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-22 14:02:46,514 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_node [2021-12-22 14:02:46,514 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_node [2021-12-22 14:02:46,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 14:02:46,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 14:02:46,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 14:02:46,519 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2021-12-22 14:02:46,520 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2021-12-22 14:02:46,520 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-12-22 14:02:46,520 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-12-22 14:02:46,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 14:02:46,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 14:02:46,520 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-22 14:02:46,520 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-22 14:02:46,520 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-22 14:02:46,521 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-22 14:02:46,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-22 14:02:46,521 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-12-22 14:02:46,521 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-12-22 14:02:46,521 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-12-22 14:02:46,521 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-12-22 14:02:46,521 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-12-22 14:02:46,521 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-12-22 14:02:46,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-22 14:02:46,522 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-22 14:02:46,522 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 14:02:46,522 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 14:02:46,522 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-12-22 14:02:46,522 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-12-22 14:02:46,522 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2021-12-22 14:02:46,522 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2021-12-22 14:02:46,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 14:02:46,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 14:02:46,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 14:02:46,523 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2021-12-22 14:02:46,523 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2021-12-22 14:02:46,523 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-22 14:02:46,523 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-22 14:02:46,523 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-22 14:02:46,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-22 14:02:46,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 14:02:46,523 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-12-22 14:02:46,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-12-22 14:02:46,524 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2021-12-22 14:02:46,524 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2021-12-22 14:02:46,524 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-22 14:02:46,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-22 14:02:46,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 14:02:46,524 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at [2021-12-22 14:02:46,524 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at [2021-12-22 14:02:46,901 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 14:02:46,902 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 14:02:48,430 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 14:02:48,443 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 14:02:48,443 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-12-22 14:02:48,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:02:48 BoogieIcfgContainer [2021-12-22 14:02:48,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 14:02:48,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 14:02:48,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 14:02:48,450 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 14:02:48,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:02:44" (1/3) ... [2021-12-22 14:02:48,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6243b218 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:02:48, skipping insertion in model container [2021-12-22 14:02:48,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:02:46" (2/3) ... [2021-12-22 14:02:48,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6243b218 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:02:48, skipping insertion in model container [2021-12-22 14:02:48,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:02:48" (3/3) ... [2021-12-22 14:02:48,452 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_remove_harness.i [2021-12-22 14:02:48,457 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 14:02:48,457 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 14:02:48,506 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 14:02:48,520 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 14:02:48,520 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 14:02:48,545 INFO L276 IsEmpty]: Start isEmpty. Operand has 460 states, 270 states have (on average 1.2703703703703704) internal successors, (343), 275 states have internal predecessors, (343), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2021-12-22 14:02:48,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-22 14:02:48,563 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:02:48,563 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, 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] [2021-12-22 14:02:48,564 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:02:48,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:02:48,568 INFO L85 PathProgramCache]: Analyzing trace with hash 207530193, now seen corresponding path program 1 times [2021-12-22 14:02:48,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:02:48,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40002846] [2021-12-22 14:02:48,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:02:48,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:02:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:48,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:02:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:48,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-22 14:02:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:48,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 14:02:49,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:49,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 14:02:49,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:49,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:02:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:49,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 14:02:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:49,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 14:02:49,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:49,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:02:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:49,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 14:02:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:49,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-22 14:02:49,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:49,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 14:02:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:49,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-22 14:02:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:49,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:02:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:49,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 14:02:49,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:49,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:02:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:49,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-22 14:02:49,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:49,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-22 14:02:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:49,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-22 14:02:49,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:49,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-22 14:02:49,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:49,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-22 14:02:49,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:49,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-22 14:02:49,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:49,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-22 14:02:49,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:49,267 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-12-22 14:02:49,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:02:49,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40002846] [2021-12-22 14:02:49,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40002846] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:02:49,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:02:49,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:02:49,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257759219] [2021-12-22 14:02:49,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:02:49,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:02:49,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:02:49,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:02:49,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:02:49,295 INFO L87 Difference]: Start difference. First operand has 460 states, 270 states have (on average 1.2703703703703704) internal successors, (343), 275 states have internal predecessors, (343), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-22 14:02:51,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:02:51,804 INFO L93 Difference]: Finished difference Result 1349 states and 2508 transitions. [2021-12-22 14:02:51,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 14:02:51,806 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 141 [2021-12-22 14:02:51,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:02:51,830 INFO L225 Difference]: With dead ends: 1349 [2021-12-22 14:02:51,830 INFO L226 Difference]: Without dead ends: 895 [2021-12-22 14:02:51,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:02:51,842 INFO L933 BasicCegarLoop]: 823 mSDtfsCounter, 537 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 716 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 1511 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 716 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-22 14:02:51,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [653 Valid, 1511 Invalid, 1613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [716 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-22 14:02:51,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2021-12-22 14:02:51,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 453. [2021-12-22 14:02:51,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 265 states have (on average 1.2339622641509433) internal successors, (327), 268 states have internal predecessors, (327), 160 states have call successors, (160), 27 states have call predecessors, (160), 26 states have return successors, (158), 158 states have call predecessors, (158), 158 states have call successors, (158) [2021-12-22 14:02:51,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 645 transitions. [2021-12-22 14:02:51,971 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 645 transitions. Word has length 141 [2021-12-22 14:02:51,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:02:51,972 INFO L470 AbstractCegarLoop]: Abstraction has 453 states and 645 transitions. [2021-12-22 14:02:51,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-22 14:02:51,972 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 645 transitions. [2021-12-22 14:02:51,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-22 14:02:51,974 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:02:51,974 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 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 14:02:51,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 14:02:51,975 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:02:51,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:02:51,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1080700984, now seen corresponding path program 1 times [2021-12-22 14:02:51,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:02:51,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226242313] [2021-12-22 14:02:51,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:02:51,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:02:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:52,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:02:52,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:52,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-22 14:02:52,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:52,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 14:02:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:52,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 14:02:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:52,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:02:52,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:52,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 14:02:52,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:52,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 14:02:52,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:52,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:02:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:52,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 14:02:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:52,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-22 14:02:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:52,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 14:02:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:52,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-22 14:02:52,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:52,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:02:52,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:52,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 14:02:52,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:52,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:02:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:52,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-22 14:02:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:52,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-22 14:02:52,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:52,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-22 14:02:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:52,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-22 14:02:52,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:52,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-22 14:02:52,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:52,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-22 14:02:52,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:52,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-22 14:02:52,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:52,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-22 14:02:52,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:52,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 14:02:52,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:52,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-22 14:02:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:52,323 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2021-12-22 14:02:52,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:02:52,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226242313] [2021-12-22 14:02:52,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226242313] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:02:52,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981837336] [2021-12-22 14:02:52,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:02:52,324 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:02:52,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:02:52,348 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 14:02:52,349 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 14:02:52,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:52,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 2501 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-22 14:02:52,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:02:53,158 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-22 14:02:53,159 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:02:53,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981837336] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:02:53,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 14:02:53,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-12-22 14:02:53,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96095883] [2021-12-22 14:02:53,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:02:53,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:02:53,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:02:53,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:02:53,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-12-22 14:02:53,163 INFO L87 Difference]: Start difference. First operand 453 states and 645 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-22 14:02:54,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:02:54,613 INFO L93 Difference]: Finished difference Result 872 states and 1259 transitions. [2021-12-22 14:02:54,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 14:02:54,613 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 156 [2021-12-22 14:02:54,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:02:54,617 INFO L225 Difference]: With dead ends: 872 [2021-12-22 14:02:54,617 INFO L226 Difference]: Without dead ends: 455 [2021-12-22 14:02:54,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 199 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 14:02:54,620 INFO L933 BasicCegarLoop]: 581 mSDtfsCounter, 665 mSDsluCounter, 1656 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 2237 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-22 14:02:54,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [687 Valid, 2237 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-22 14:02:54,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2021-12-22 14:02:54,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 455. [2021-12-22 14:02:54,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 266 states have (on average 1.2330827067669172) internal successors, (328), 270 states have internal predecessors, (328), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (171), 158 states have call predecessors, (171), 158 states have call successors, (171) [2021-12-22 14:02:54,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 659 transitions. [2021-12-22 14:02:54,649 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 659 transitions. Word has length 156 [2021-12-22 14:02:54,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:02:54,651 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 659 transitions. [2021-12-22 14:02:54,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-22 14:02:54,651 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 659 transitions. [2021-12-22 14:02:54,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-22 14:02:54,655 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:02:54,656 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:02:54,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-22 14:02:54,877 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 14:02:54,877 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:02:54,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:02:54,878 INFO L85 PathProgramCache]: Analyzing trace with hash 651465952, now seen corresponding path program 1 times [2021-12-22 14:02:54,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:02:54,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644970420] [2021-12-22 14:02:54,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:02:54,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:02:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:55,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:02:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:55,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-22 14:02:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:55,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 14:02:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:55,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 14:02:55,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:55,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:02:55,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:55,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 14:02:55,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:55,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 14:02:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:55,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:02:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:55,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 14:02:55,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:55,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-22 14:02:55,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:55,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:02:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:55,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 14:02:55,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:55,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-22 14:02:55,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:55,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:02:55,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:55,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-22 14:02:55,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:55,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:02:55,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:55,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-22 14:02:55,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:55,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-22 14:02:55,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:55,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-22 14:02:55,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:55,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-22 14:02:55,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:55,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-22 14:02:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:55,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-22 14:02:55,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:55,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-22 14:02:55,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:55,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-22 14:02:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:55,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-22 14:02:55,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:55,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-22 14:02:55,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:55,286 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2021-12-22 14:02:55,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:02:55,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644970420] [2021-12-22 14:02:55,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644970420] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:02:55,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076801346] [2021-12-22 14:02:55,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:02:55,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:02:55,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:02:55,304 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 14:02:55,305 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 14:02:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:55,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 2551 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-22 14:02:55,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:02:56,109 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-22 14:02:56,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:02:56,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076801346] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:02:56,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 14:02:56,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2021-12-22 14:02:56,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839697132] [2021-12-22 14:02:56,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:02:56,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 14:02:56,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:02:56,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 14:02:56,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-12-22 14:02:56,112 INFO L87 Difference]: Start difference. First operand 455 states and 659 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-12-22 14:02:57,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:02:57,639 INFO L93 Difference]: Finished difference Result 895 states and 1330 transitions. [2021-12-22 14:02:57,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 14:02:57,640 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 164 [2021-12-22 14:02:57,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:02:57,643 INFO L225 Difference]: With dead ends: 895 [2021-12-22 14:02:57,643 INFO L226 Difference]: Without dead ends: 476 [2021-12-22 14:02:57,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2021-12-22 14:02:57,645 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 691 mSDsluCounter, 2726 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 3303 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-22 14:02:57,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [741 Valid, 3303 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-22 14:02:57,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-12-22 14:02:57,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 474. [2021-12-22 14:02:57,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 282 states have (on average 1.2411347517730495) internal successors, (350), 286 states have internal predecessors, (350), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (190), 161 states have call predecessors, (190), 160 states have call successors, (190) [2021-12-22 14:02:57,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 702 transitions. [2021-12-22 14:02:57,671 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 702 transitions. Word has length 164 [2021-12-22 14:02:57,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:02:57,672 INFO L470 AbstractCegarLoop]: Abstraction has 474 states and 702 transitions. [2021-12-22 14:02:57,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-12-22 14:02:57,672 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 702 transitions. [2021-12-22 14:02:57,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-22 14:02:57,674 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:02:57,674 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:02:57,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-22 14:02:57,896 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 14:02:57,896 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:02:57,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:02:57,897 INFO L85 PathProgramCache]: Analyzing trace with hash 706817890, now seen corresponding path program 1 times [2021-12-22 14:02:57,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:02:57,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892934530] [2021-12-22 14:02:57,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:02:57,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:02:57,968 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 14:02:57,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1981175053] [2021-12-22 14:02:57,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:02:57,969 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:02:57,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:02:57,970 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 14:02:57,971 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 14:02:58,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:02:58,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 2692 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-22 14:02:58,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:02:58,699 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-22 14:02:58,700 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:02:58,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:02:58,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892934530] [2021-12-22 14:02:58,700 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 14:02:58,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981175053] [2021-12-22 14:02:58,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981175053] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:02:58,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:02:58,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 14:02:58,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484509766] [2021-12-22 14:02:58,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:02:58,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 14:02:58,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:02:58,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 14:02:58,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:02:58,702 INFO L87 Difference]: Start difference. First operand 474 states and 702 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-22 14:02:59,899 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:03:01,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:03:01,166 INFO L93 Difference]: Finished difference Result 920 states and 1403 transitions. [2021-12-22 14:03:01,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 14:03:01,167 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 179 [2021-12-22 14:03:01,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:03:01,171 INFO L225 Difference]: With dead ends: 920 [2021-12-22 14:03:01,176 INFO L226 Difference]: Without dead ends: 482 [2021-12-22 14:03:01,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-12-22 14:03:01,184 INFO L933 BasicCegarLoop]: 575 mSDtfsCounter, 689 mSDsluCounter, 2188 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 2763 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-22 14:03:01,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [711 Valid, 2763 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-22 14:03:01,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2021-12-22 14:03:01,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 474. [2021-12-22 14:03:01,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 282 states have (on average 1.2411347517730495) internal successors, (350), 286 states have internal predecessors, (350), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (190), 161 states have call predecessors, (190), 160 states have call successors, (190) [2021-12-22 14:03:01,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 702 transitions. [2021-12-22 14:03:01,246 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 702 transitions. Word has length 179 [2021-12-22 14:03:01,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:03:01,247 INFO L470 AbstractCegarLoop]: Abstraction has 474 states and 702 transitions. [2021-12-22 14:03:01,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-22 14:03:01,247 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 702 transitions. [2021-12-22 14:03:01,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-12-22 14:03:01,249 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:03:01,249 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:03:01,270 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 14:03:01,463 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 14:03:01,464 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:03:01,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:03:01,464 INFO L85 PathProgramCache]: Analyzing trace with hash -548515061, now seen corresponding path program 1 times [2021-12-22 14:03:01,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:03:01,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513631657] [2021-12-22 14:03:01,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:03:01,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:03:01,569 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 14:03:01,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [830757103] [2021-12-22 14:03:01,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:03:01,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:03:01,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:03:01,584 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 14:03:01,624 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 14:03:02,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:03:02,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 2764 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-22 14:03:02,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:03:02,349 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-12-22 14:03:02,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:03:02,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:03:02,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513631657] [2021-12-22 14:03:02,349 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 14:03:02,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830757103] [2021-12-22 14:03:02,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830757103] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:03:02,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:03:02,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 14:03:02,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747868943] [2021-12-22 14:03:02,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:03:02,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 14:03:02,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:03:02,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 14:03:02,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:03:02,352 INFO L87 Difference]: Start difference. First operand 474 states and 702 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2021-12-22 14:03:04,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:03:04,334 INFO L93 Difference]: Finished difference Result 930 states and 1407 transitions. [2021-12-22 14:03:04,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 14:03:04,335 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) Word has length 195 [2021-12-22 14:03:04,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:03:04,340 INFO L225 Difference]: With dead ends: 930 [2021-12-22 14:03:04,341 INFO L226 Difference]: Without dead ends: 492 [2021-12-22 14:03:04,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 189 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 14:03:04,344 INFO L933 BasicCegarLoop]: 554 mSDtfsCounter, 754 mSDsluCounter, 3172 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 3726 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-22 14:03:04,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [804 Valid, 3726 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-22 14:03:04,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2021-12-22 14:03:04,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 474. [2021-12-22 14:03:04,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 282 states have (on average 1.2411347517730495) internal successors, (350), 286 states have internal predecessors, (350), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (190), 161 states have call predecessors, (190), 160 states have call successors, (190) [2021-12-22 14:03:04,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 702 transitions. [2021-12-22 14:03:04,381 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 702 transitions. Word has length 195 [2021-12-22 14:03:04,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:03:04,382 INFO L470 AbstractCegarLoop]: Abstraction has 474 states and 702 transitions. [2021-12-22 14:03:04,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2021-12-22 14:03:04,382 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 702 transitions. [2021-12-22 14:03:04,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-12-22 14:03:04,385 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:03:04,385 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 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, 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] [2021-12-22 14:03:04,408 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 14:03:04,607 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 14:03:04,608 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:03:04,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:03:04,608 INFO L85 PathProgramCache]: Analyzing trace with hash -2018600789, now seen corresponding path program 2 times [2021-12-22 14:03:04,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:03:04,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35698013] [2021-12-22 14:03:04,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:03:04,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:03:04,725 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 14:03:04,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [389633441] [2021-12-22 14:03:04,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 14:03:04,725 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:03:04,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:03:04,734 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 14:03:04,762 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 14:03:05,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 14:03:05,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 14:03:05,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 2905 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-22 14:03:05,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:03:05,822 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-12-22 14:03:05,823 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:03:05,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:03:05,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35698013] [2021-12-22 14:03:05,823 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 14:03:05,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389633441] [2021-12-22 14:03:05,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389633441] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:03:05,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:03:05,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 14:03:05,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586479480] [2021-12-22 14:03:05,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:03:05,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 14:03:05,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:03:05,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 14:03:05,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:03:05,825 INFO L87 Difference]: Start difference. First operand 474 states and 702 transitions. Second operand has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 7 states have internal predecessors, (86), 4 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2021-12-22 14:03:07,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:03:07,407 INFO L93 Difference]: Finished difference Result 878 states and 1321 transitions. [2021-12-22 14:03:07,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 14:03:07,408 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 7 states have internal predecessors, (86), 4 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) Word has length 210 [2021-12-22 14:03:07,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:03:07,411 INFO L225 Difference]: With dead ends: 878 [2021-12-22 14:03:07,411 INFO L226 Difference]: Without dead ends: 476 [2021-12-22 14:03:07,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 206 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 14:03:07,414 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 682 mSDsluCounter, 2212 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 2791 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-22 14:03:07,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [704 Valid, 2791 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-22 14:03:07,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-12-22 14:03:07,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 476. [2021-12-22 14:03:07,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 283 states have (on average 1.2402826855123674) internal successors, (351), 288 states have internal predecessors, (351), 162 states have call successors, (162), 27 states have call predecessors, (162), 29 states have return successors, (201), 161 states have call predecessors, (201), 160 states have call successors, (201) [2021-12-22 14:03:07,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 714 transitions. [2021-12-22 14:03:07,433 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 714 transitions. Word has length 210 [2021-12-22 14:03:07,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:03:07,433 INFO L470 AbstractCegarLoop]: Abstraction has 476 states and 714 transitions. [2021-12-22 14:03:07,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 7 states have internal predecessors, (86), 4 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2021-12-22 14:03:07,433 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 714 transitions. [2021-12-22 14:03:07,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-12-22 14:03:07,435 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:03:07,435 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 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, 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] [2021-12-22 14:03:07,478 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 14:03:07,657 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 14:03:07,658 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:03:07,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:03:07,658 INFO L85 PathProgramCache]: Analyzing trace with hash -914550263, now seen corresponding path program 1 times [2021-12-22 14:03:07,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:03:07,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950315390] [2021-12-22 14:03:07,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:03:07,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:03:07,803 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 14:03:07,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1590764998] [2021-12-22 14:03:07,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:03:07,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:03:07,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:03:07,824 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 14:03:07,825 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 14:03:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:03:08,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 3096 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-22 14:03:08,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:03:08,766 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-12-22 14:03:08,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:03:08,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:03:08,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950315390] [2021-12-22 14:03:08,767 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 14:03:08,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590764998] [2021-12-22 14:03:08,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590764998] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:03:08,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:03:08,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 14:03:08,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155303763] [2021-12-22 14:03:08,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:03:08,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 14:03:08,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:03:08,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 14:03:08,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-22 14:03:08,769 INFO L87 Difference]: Start difference. First operand 476 states and 714 transitions. Second operand has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2021-12-22 14:03:10,551 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:03:11,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:03:11,168 INFO L93 Difference]: Finished difference Result 883 states and 1346 transitions. [2021-12-22 14:03:11,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 14:03:11,169 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) Word has length 233 [2021-12-22 14:03:11,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:03:11,172 INFO L225 Difference]: With dead ends: 883 [2021-12-22 14:03:11,172 INFO L226 Difference]: Without dead ends: 479 [2021-12-22 14:03:11,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 229 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 14:03:11,175 INFO L933 BasicCegarLoop]: 573 mSDtfsCounter, 706 mSDsluCounter, 2736 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 3309 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-22 14:03:11,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [728 Valid, 3309 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-22 14:03:11,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2021-12-22 14:03:11,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 477. [2021-12-22 14:03:11,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 284 states have (on average 1.2394366197183098) internal successors, (352), 289 states have internal predecessors, (352), 162 states have call successors, (162), 27 states have call predecessors, (162), 29 states have return successors, (201), 161 states have call predecessors, (201), 160 states have call successors, (201) [2021-12-22 14:03:11,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 715 transitions. [2021-12-22 14:03:11,194 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 715 transitions. Word has length 233 [2021-12-22 14:03:11,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:03:11,194 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 715 transitions. [2021-12-22 14:03:11,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2021-12-22 14:03:11,194 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 715 transitions. [2021-12-22 14:03:11,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-12-22 14:03:11,197 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:03:11,197 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 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, 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 14:03:11,232 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 14:03:11,411 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 14:03:11,411 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:03:11,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:03:11,412 INFO L85 PathProgramCache]: Analyzing trace with hash -2024605444, now seen corresponding path program 1 times [2021-12-22 14:03:11,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:03:11,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929773675] [2021-12-22 14:03:11,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:03:11,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:03:11,513 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 14:03:11,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [912510435] [2021-12-22 14:03:11,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:03:11,514 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:03:11,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:03:11,515 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 14:03:11,516 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 14:03:12,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:03:12,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 3027 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-22 14:03:12,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:03:12,539 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 177 proven. 3 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-12-22 14:03:12,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 14:03:13,136 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2021-12-22 14:03:13,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:03:13,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929773675] [2021-12-22 14:03:13,137 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 14:03:13,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912510435] [2021-12-22 14:03:13,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912510435] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 14:03:13,137 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 14:03:13,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-12-22 14:03:13,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659435046] [2021-12-22 14:03:13,137 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 14:03:13,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 14:03:13,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:03:13,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 14:03:13,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-22 14:03:13,140 INFO L87 Difference]: Start difference. First operand 477 states and 715 transitions. Second operand has 14 states, 12 states have (on average 10.333333333333334) internal successors, (124), 14 states have internal predecessors, (124), 9 states have call successors, (50), 2 states have call predecessors, (50), 4 states have return successors, (48), 5 states have call predecessors, (48), 9 states have call successors, (48) [2021-12-22 14:03:16,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:03:16,262 INFO L93 Difference]: Finished difference Result 901 states and 1380 transitions. [2021-12-22 14:03:16,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 14:03:16,263 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 10.333333333333334) internal successors, (124), 14 states have internal predecessors, (124), 9 states have call successors, (50), 2 states have call predecessors, (50), 4 states have return successors, (48), 5 states have call predecessors, (48), 9 states have call successors, (48) Word has length 234 [2021-12-22 14:03:16,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:03:16,268 INFO L225 Difference]: With dead ends: 901 [2021-12-22 14:03:16,268 INFO L226 Difference]: Without dead ends: 496 [2021-12-22 14:03:16,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 457 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 14:03:16,270 INFO L933 BasicCegarLoop]: 558 mSDtfsCounter, 1170 mSDsluCounter, 3222 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 3780 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:03:16,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1220 Valid, 3780 Invalid, 1038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [457 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-22 14:03:16,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-12-22 14:03:16,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 490. [2021-12-22 14:03:16,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 296 states have (on average 1.2466216216216217) internal successors, (369), 300 states have internal predecessors, (369), 163 states have call successors, (163), 27 states have call predecessors, (163), 29 states have return successors, (202), 163 states have call predecessors, (202), 161 states have call successors, (202) [2021-12-22 14:03:16,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 734 transitions. [2021-12-22 14:03:16,289 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 734 transitions. Word has length 234 [2021-12-22 14:03:16,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:03:16,289 INFO L470 AbstractCegarLoop]: Abstraction has 490 states and 734 transitions. [2021-12-22 14:03:16,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 10.333333333333334) internal successors, (124), 14 states have internal predecessors, (124), 9 states have call successors, (50), 2 states have call predecessors, (50), 4 states have return successors, (48), 5 states have call predecessors, (48), 9 states have call successors, (48) [2021-12-22 14:03:16,289 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 734 transitions. [2021-12-22 14:03:16,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2021-12-22 14:03:16,291 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:03:16,292 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 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, 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 14:03:16,329 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 14:03:16,495 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 14:03:16,496 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:03:16,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:03:16,496 INFO L85 PathProgramCache]: Analyzing trace with hash -729173346, now seen corresponding path program 2 times [2021-12-22 14:03:16,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:03:16,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857261249] [2021-12-22 14:03:16,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:03:16,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:03:16,572 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 14:03:16,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2071358087] [2021-12-22 14:03:16,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 14:03:16,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:03:16,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:03:16,574 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 14:03:16,586 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 14:03:17,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 14:03:17,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 14:03:17,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 3309 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-22 14:03:17,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:03:17,710 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-12-22 14:03:17,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:03:17,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:03:17,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857261249] [2021-12-22 14:03:17,711 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 14:03:17,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071358087] [2021-12-22 14:03:17,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071358087] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:03:17,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:03:17,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 14:03:17,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008365729] [2021-12-22 14:03:17,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:03:17,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 14:03:17,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:03:17,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 14:03:17,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-22 14:03:17,715 INFO L87 Difference]: Start difference. First operand 490 states and 734 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 5 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2021-12-22 14:03:20,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:03:20,163 INFO L93 Difference]: Finished difference Result 912 states and 1378 transitions. [2021-12-22 14:03:20,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 14:03:20,164 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 5 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) Word has length 264 [2021-12-22 14:03:20,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:03:20,167 INFO L225 Difference]: With dead ends: 912 [2021-12-22 14:03:20,167 INFO L226 Difference]: Without dead ends: 502 [2021-12-22 14:03:20,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 257 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 14:03:20,171 INFO L933 BasicCegarLoop]: 607 mSDtfsCounter, 77 mSDsluCounter, 3500 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 4107 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-22 14:03:20,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 4107 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-22 14:03:20,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2021-12-22 14:03:20,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 502. [2021-12-22 14:03:20,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 302 states have (on average 1.2450331125827814) internal successors, (376), 306 states have internal predecessors, (376), 168 states have call successors, (168), 28 states have call predecessors, (168), 30 states have return successors, (207), 168 states have call predecessors, (207), 166 states have call successors, (207) [2021-12-22 14:03:20,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 751 transitions. [2021-12-22 14:03:20,188 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 751 transitions. Word has length 264 [2021-12-22 14:03:20,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:03:20,189 INFO L470 AbstractCegarLoop]: Abstraction has 502 states and 751 transitions. [2021-12-22 14:03:20,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 5 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2021-12-22 14:03:20,189 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 751 transitions. [2021-12-22 14:03:20,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2021-12-22 14:03:20,191 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:03:20,192 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 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, 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] [2021-12-22 14:03:20,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-22 14:03:20,415 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 14:03:20,416 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:03:20,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:03:20,416 INFO L85 PathProgramCache]: Analyzing trace with hash 256824554, now seen corresponding path program 3 times [2021-12-22 14:03:20,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:03:20,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004939507] [2021-12-22 14:03:20,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:03:20,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:03:20,481 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 14:03:20,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [453682383] [2021-12-22 14:03:20,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-22 14:03:20,481 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:03:20,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:03:20,482 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 14:03:20,483 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 14:03:21,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-22 14:03:21,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 14:03:21,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 2171 conjuncts, 161 conjunts are in the unsatisfiable core [2021-12-22 14:03:21,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:03:22,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:03:22,456 INFO L353 Elim1Store]: treesize reduction 64, result has 42.3 percent of original size [2021-12-22 14:03:22,456 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 59