./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_n_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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_array_list_pop_front_n_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 b6927eb425246c7f19dfd1037a51cb88a604d752602914724eb993d672f39eb9 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:51:20,728 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:51:20,729 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:51:20,769 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:51:20,769 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:51:20,771 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:51:20,773 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:51:20,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:51:20,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:51:20,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:51:20,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:51:20,786 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:51:20,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:51:20,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:51:20,789 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:51:20,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:51:20,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:51:20,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:51:20,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:51:20,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:51:20,802 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:51:20,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:51:20,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:51:20,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:51:20,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:51:20,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:51:20,812 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:51:20,813 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:51:20,814 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:51:20,814 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:51:20,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:51:20,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:51:20,817 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:51:20,817 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:51:20,818 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:51:20,818 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:51:20,819 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:51:20,819 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:51:20,819 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:51:20,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:51:20,820 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:51:20,822 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:51:20,823 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 10:51:20,850 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:51:20,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:51:20,851 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:51:20,851 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:51:20,852 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:51:20,852 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:51:20,853 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:51:20,853 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:51:20,853 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:51:20,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:51:20,854 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:51:20,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:51:20,855 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:51:20,855 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:51:20,855 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:51:20,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:51:20,856 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:51:20,856 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:51:20,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:51:20,856 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:51:20,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:51:20,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:51:20,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:51:20,857 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:51:20,857 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:51:20,858 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:51:20,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:51:20,858 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:51:20,858 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:51:20,858 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:51:20,859 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6927eb425246c7f19dfd1037a51cb88a604d752602914724eb993d672f39eb9 [2022-07-12 10:51:21,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:51:21,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:51:21,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:51:21,097 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:51:21,098 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:51:21,099 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_n_harness.i [2022-07-12 10:51:21,152 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89c18b9ad/ab198758287c4da784e0c2ea2f8ca239/FLAG9a2e05373 [2022-07-12 10:51:21,810 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:51:21,811 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_n_harness.i [2022-07-12 10:51:21,843 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89c18b9ad/ab198758287c4da784e0c2ea2f8ca239/FLAG9a2e05373 [2022-07-12 10:51:21,950 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89c18b9ad/ab198758287c4da784e0c2ea2f8ca239 [2022-07-12 10:51:21,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:51:21,953 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:51:21,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:51:21,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:51:21,961 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:51:21,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:51:21" (1/1) ... [2022-07-12 10:51:21,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16dab17d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:51:21, skipping insertion in model container [2022-07-12 10:51:21,963 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:51:21" (1/1) ... [2022-07-12 10:51:21,969 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:51:22,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:51:22,266 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_array_list_pop_front_n_harness.i[4500,4513] [2022-07-12 10:51:22,273 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_array_list_pop_front_n_harness.i[4560,4573] [2022-07-12 10:51:22,878 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 10:51:22,937 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:22,938 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:22,938 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:22,939 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:22,940 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:22,951 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:22,951 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:22,953 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:22,954 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:22,955 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:22,956 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:22,957 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:22,958 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:23,206 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 10:51:23,210 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 10:51:23,211 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 10:51:23,216 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 10:51:23,219 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 10:51:23,219 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 10:51:23,220 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 10:51:23,222 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 10:51:23,223 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 10:51:23,224 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 10:51:23,312 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:23,317 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:23,416 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:51:23,445 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:51:23,472 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_array_list_pop_front_n_harness.i[4500,4513] [2022-07-12 10:51:23,480 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_array_list_pop_front_n_harness.i[4560,4573] [2022-07-12 10:51:23,502 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 10:51:23,513 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:23,516 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:23,517 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:23,522 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:23,522 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:23,528 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:23,532 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:23,533 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:23,533 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:23,534 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:23,539 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:23,539 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:23,540 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:23,580 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 10:51:23,583 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 10:51:23,584 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 10:51:23,585 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 10:51:23,586 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 10:51:23,587 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 10:51:23,587 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 10:51:23,589 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 10:51:23,590 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 10:51:23,591 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 10:51:23,639 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:23,642 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:23,665 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:51:23,891 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:51:23,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:51:23 WrapperNode [2022-07-12 10:51:23,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:51:23,893 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:51:23,893 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:51:23,893 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:51:23,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:51:23" (1/1) ... [2022-07-12 10:51:23,989 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:51:23" (1/1) ... [2022-07-12 10:51:24,063 INFO L137 Inliner]: procedures = 691, calls = 1685, calls flagged for inlining = 51, calls inlined = 9, statements flattened = 664 [2022-07-12 10:51:24,063 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:51:24,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:51:24,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:51:24,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:51:24,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:51:23" (1/1) ... [2022-07-12 10:51:24,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:51:23" (1/1) ... [2022-07-12 10:51:24,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:51:23" (1/1) ... [2022-07-12 10:51:24,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:51:23" (1/1) ... [2022-07-12 10:51:24,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:51:23" (1/1) ... [2022-07-12 10:51:24,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:51:23" (1/1) ... [2022-07-12 10:51:24,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:51:23" (1/1) ... [2022-07-12 10:51:24,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:51:24,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:51:24,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:51:24,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:51:24,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:51:23" (1/1) ... [2022-07-12 10:51:24,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:51:24,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:51:24,204 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) [2022-07-12 10:51:24,230 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 [2022-07-12 10:51:24,252 INFO L130 BoogieDeclarations]: Found specification of procedure memmove_impl [2022-07-12 10:51:24,252 INFO L138 BoogieDeclarations]: Found implementation of procedure memmove_impl [2022-07-12 10:51:24,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:51:24,254 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-07-12 10:51:24,254 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-07-12 10:51:24,254 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-07-12 10:51:24,255 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-07-12 10:51:24,255 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-12 10:51:24,255 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-12 10:51:24,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:51:24,256 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-12 10:51:24,256 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-12 10:51:24,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 10:51:24,256 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 10:51:24,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 10:51:24,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:51:24,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 10:51:24,257 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_front_n [2022-07-12 10:51:24,258 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_front_n [2022-07-12 10:51:24,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:51:24,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:51:24,258 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-12 10:51:24,258 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-12 10:51:24,259 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-12 10:51:24,259 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-12 10:51:24,259 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-12 10:51:24,260 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-12 10:51:24,260 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-07-12 10:51:24,260 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-07-12 10:51:24,260 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 10:51:24,260 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 10:51:24,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:51:24,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 10:51:24,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 10:51:24,261 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-12 10:51:24,261 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-12 10:51:24,261 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-12 10:51:24,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-12 10:51:24,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:51:24,262 INFO L130 BoogieDeclarations]: Found specification of procedure my_memmove [2022-07-12 10:51:24,262 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memmove [2022-07-12 10:51:24,262 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-07-12 10:51:24,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-07-12 10:51:24,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:51:24,537 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:51:24,538 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:51:25,331 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:51:25,344 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:51:25,344 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 10:51:25,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:51:25 BoogieIcfgContainer [2022-07-12 10:51:25,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:51:25,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:51:25,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:51:25,352 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:51:25,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:51:21" (1/3) ... [2022-07-12 10:51:25,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c1d6906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:51:25, skipping insertion in model container [2022-07-12 10:51:25,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:51:23" (2/3) ... [2022-07-12 10:51:25,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c1d6906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:51:25, skipping insertion in model container [2022-07-12 10:51:25,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:51:25" (3/3) ... [2022-07-12 10:51:25,355 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_pop_front_n_harness.i [2022-07-12 10:51:25,368 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:51:25,368 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:51:25,417 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:51:25,427 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@18764540, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4e463320 [2022-07-12 10:51:25,428 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 10:51:25,435 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 104 states have (on average 1.2115384615384615) internal successors, (126), 106 states have internal predecessors, (126), 49 states have call successors, (49), 16 states have call predecessors, (49), 16 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2022-07-12 10:51:25,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-12 10:51:25,446 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:51:25,447 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:51:25,447 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:51:25,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:51:25,452 INFO L85 PathProgramCache]: Analyzing trace with hash 931255937, now seen corresponding path program 1 times [2022-07-12 10:51:25,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:51:25,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740281881] [2022-07-12 10:51:25,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:51:25,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:51:25,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:25,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:51:25,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:25,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:51:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:26,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:51:26,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:26,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:51:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:26,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:51:26,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:26,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 10:51:26,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:26,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 10:51:26,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:26,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 10:51:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:26,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 10:51:26,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:26,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 10:51:26,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:26,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 10:51:26,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:26,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:51:26,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:26,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 10:51:26,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:26,157 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-12 10:51:26,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:51:26,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740281881] [2022-07-12 10:51:26,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740281881] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:51:26,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:51:26,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:51:26,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312328340] [2022-07-12 10:51:26,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:51:26,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:51:26,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:51:26,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:51:26,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:51:26,201 INFO L87 Difference]: Start difference. First operand has 171 states, 104 states have (on average 1.2115384615384615) internal successors, (126), 106 states have internal predecessors, (126), 49 states have call successors, (49), 16 states have call predecessors, (49), 16 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 10:51:26,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:51:26,692 INFO L93 Difference]: Finished difference Result 369 states and 548 transitions. [2022-07-12 10:51:26,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 10:51:26,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 84 [2022-07-12 10:51:26,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:51:26,704 INFO L225 Difference]: With dead ends: 369 [2022-07-12 10:51:26,704 INFO L226 Difference]: Without dead ends: 194 [2022-07-12 10:51:26,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:51:26,712 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 121 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 10:51:26,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 252 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 10:51:26,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-07-12 10:51:26,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 160. [2022-07-12 10:51:26,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 95 states have (on average 1.1789473684210525) internal successors, (112), 98 states have internal predecessors, (112), 49 states have call successors, (49), 16 states have call predecessors, (49), 15 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-07-12 10:51:26,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 206 transitions. [2022-07-12 10:51:26,773 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 206 transitions. Word has length 84 [2022-07-12 10:51:26,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:51:26,775 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 206 transitions. [2022-07-12 10:51:26,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 10:51:26,777 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 206 transitions. [2022-07-12 10:51:26,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-12 10:51:26,781 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:51:26,781 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:51:26,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:51:26,784 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:51:26,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:51:26,784 INFO L85 PathProgramCache]: Analyzing trace with hash -732092419, now seen corresponding path program 1 times [2022-07-12 10:51:26,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:51:26,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785582820] [2022-07-12 10:51:26,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:51:26,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:51:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:26,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:51:27,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:27,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:51:27,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:27,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:51:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:27,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:51:27,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:27,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:51:27,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:27,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 10:51:27,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:27,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 10:51:27,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:27,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 10:51:27,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:27,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 10:51:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:27,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 10:51:27,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:27,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 10:51:27,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:27,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:51:27,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:27,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 10:51:27,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:27,174 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-12 10:51:27,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:51:27,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785582820] [2022-07-12 10:51:27,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785582820] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:51:27,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632602407] [2022-07-12 10:51:27,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:51:27,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:51:27,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:51:27,178 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) [2022-07-12 10:51:27,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 10:51:27,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:27,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 2136 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 10:51:27,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:51:27,674 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-12 10:51:27,674 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:51:27,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632602407] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:51:27,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:51:27,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-07-12 10:51:27,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118381309] [2022-07-12 10:51:27,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:51:27,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:51:27,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:51:27,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:51:27,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:51:27,678 INFO L87 Difference]: Start difference. First operand 160 states and 206 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-12 10:51:27,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:51:27,889 INFO L93 Difference]: Finished difference Result 285 states and 377 transitions. [2022-07-12 10:51:27,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:51:27,889 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 84 [2022-07-12 10:51:27,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:51:27,891 INFO L225 Difference]: With dead ends: 285 [2022-07-12 10:51:27,892 INFO L226 Difference]: Without dead ends: 162 [2022-07-12 10:51:27,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:51:27,894 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 211 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 10:51:27,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 604 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 10:51:27,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-07-12 10:51:27,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2022-07-12 10:51:27,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 96 states have (on average 1.1770833333333333) internal successors, (113), 100 states have internal predecessors, (113), 49 states have call successors, (49), 16 states have call predecessors, (49), 16 states have return successors, (52), 45 states have call predecessors, (52), 45 states have call successors, (52) [2022-07-12 10:51:27,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 214 transitions. [2022-07-12 10:51:27,917 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 214 transitions. Word has length 84 [2022-07-12 10:51:27,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:51:27,917 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 214 transitions. [2022-07-12 10:51:27,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-12 10:51:27,918 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 214 transitions. [2022-07-12 10:51:27,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-12 10:51:27,924 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:51:27,924 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:51:27,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 10:51:28,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:51:28,136 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:51:28,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:51:28,137 INFO L85 PathProgramCache]: Analyzing trace with hash 681912055, now seen corresponding path program 1 times [2022-07-12 10:51:28,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:51:28,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883880500] [2022-07-12 10:51:28,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:51:28,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:51:28,207 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:51:28,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [834265945] [2022-07-12 10:51:28,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:51:28,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:51:28,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:51:28,209 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) [2022-07-12 10:51:28,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 10:51:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:28,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 2277 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 10:51:28,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:51:28,708 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-12 10:51:28,709 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:51:28,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:51:28,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883880500] [2022-07-12 10:51:28,709 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:51:28,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834265945] [2022-07-12 10:51:28,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834265945] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:51:28,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:51:28,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:51:28,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231493935] [2022-07-12 10:51:28,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:51:28,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:51:28,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:51:28,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:51:28,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:51:28,712 INFO L87 Difference]: Start difference. First operand 162 states and 214 transitions. Second operand has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-12 10:51:29,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:51:29,079 INFO L93 Difference]: Finished difference Result 277 states and 368 transitions. [2022-07-12 10:51:29,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 10:51:29,080 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 99 [2022-07-12 10:51:29,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:51:29,082 INFO L225 Difference]: With dead ends: 277 [2022-07-12 10:51:29,082 INFO L226 Difference]: Without dead ends: 162 [2022-07-12 10:51:29,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-07-12 10:51:29,084 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 225 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 10:51:29,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 803 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 10:51:29,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-07-12 10:51:29,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2022-07-12 10:51:29,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 96 states have (on average 1.1770833333333333) internal successors, (113), 100 states have internal predecessors, (113), 49 states have call successors, (49), 16 states have call predecessors, (49), 16 states have return successors, (49), 45 states have call predecessors, (49), 45 states have call successors, (49) [2022-07-12 10:51:29,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 211 transitions. [2022-07-12 10:51:29,103 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 211 transitions. Word has length 99 [2022-07-12 10:51:29,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:51:29,104 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 211 transitions. [2022-07-12 10:51:29,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-12 10:51:29,104 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 211 transitions. [2022-07-12 10:51:29,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-12 10:51:29,106 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:51:29,106 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 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] [2022-07-12 10:51:29,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-12 10:51:29,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-12 10:51:29,322 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:51:29,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:51:29,322 INFO L85 PathProgramCache]: Analyzing trace with hash -364128269, now seen corresponding path program 2 times [2022-07-12 10:51:29,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:51:29,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252264963] [2022-07-12 10:51:29,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:51:29,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:51:29,397 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:51:29,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [402042067] [2022-07-12 10:51:29,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:51:29,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:51:29,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:51:29,399 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) [2022-07-12 10:51:29,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 10:51:30,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:51:30,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:51:30,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 2418 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 10:51:30,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:51:30,128 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-12 10:51:30,129 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:51:30,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:51:30,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252264963] [2022-07-12 10:51:30,129 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:51:30,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402042067] [2022-07-12 10:51:30,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402042067] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:51:30,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:51:30,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:51:30,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309534562] [2022-07-12 10:51:30,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:51:30,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:51:30,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:51:30,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:51:30,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:51:30,145 INFO L87 Difference]: Start difference. First operand 162 states and 211 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 8 states have internal predecessors, (46), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-12 10:51:30,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:51:30,591 INFO L93 Difference]: Finished difference Result 274 states and 360 transitions. [2022-07-12 10:51:30,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:51:30,592 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 8 states have internal predecessors, (46), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 114 [2022-07-12 10:51:30,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:51:30,594 INFO L225 Difference]: With dead ends: 274 [2022-07-12 10:51:30,594 INFO L226 Difference]: Without dead ends: 162 [2022-07-12 10:51:30,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-07-12 10:51:30,595 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 227 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 10:51:30,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 1019 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 10:51:30,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-07-12 10:51:30,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2022-07-12 10:51:30,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 96 states have (on average 1.1770833333333333) internal successors, (113), 100 states have internal predecessors, (113), 49 states have call successors, (49), 16 states have call predecessors, (49), 16 states have return successors, (47), 45 states have call predecessors, (47), 45 states have call successors, (47) [2022-07-12 10:51:30,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 209 transitions. [2022-07-12 10:51:30,610 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 209 transitions. Word has length 114 [2022-07-12 10:51:30,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:51:30,611 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 209 transitions. [2022-07-12 10:51:30,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 8 states have internal predecessors, (46), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-12 10:51:30,611 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 209 transitions. [2022-07-12 10:51:30,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-12 10:51:30,612 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:51:30,613 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:51:30,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 10:51:30,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:51:30,840 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:51:30,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:51:30,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1183711671, now seen corresponding path program 1 times [2022-07-12 10:51:30,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:51:30,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979423361] [2022-07-12 10:51:30,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:51:30,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:51:30,918 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:51:30,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1692117759] [2022-07-12 10:51:30,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:51:30,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:51:30,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:51:30,920 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) [2022-07-12 10:51:30,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 10:51:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:51:32,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 2700 conjuncts, 296 conjunts are in the unsatisfiable core [2022-07-12 10:51:32,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:51:32,040 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 10:51:32,367 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 10:51:32,636 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-12 10:51:32,636 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 37 [2022-07-12 10:51:32,866 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-12 10:51:32,866 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-07-12 10:52:03,948 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-12 10:52:04,041 INFO L356 Elim1Store]: treesize reduction 129, result has 28.7 percent of original size [2022-07-12 10:52:04,041 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 51 treesize of output 85 [2022-07-12 10:52:06,214 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 10:52:06,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:52:06,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:52:06,218 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 138 [2022-07-12 10:52:06,272 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 10:52:06,273 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 153 treesize of output 199 [2022-07-12 10:52:11,872 WARN L233 SmtUtils]: Spent 5.01s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-12 10:52:12,417 INFO L356 Elim1Store]: treesize reduction 24, result has 42.9 percent of original size [2022-07-12 10:52:12,417 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 98 treesize of output 90 [2022-07-12 10:52:12,435 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-07-12 10:52:12,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:52:12,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:52:12,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:52:12,464 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 51 [2022-07-12 10:52:12,516 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-12 10:52:12,516 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 98 treesize of output 78 [2022-07-12 10:52:12,525 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-07-12 10:52:26,515 WARN L233 SmtUtils]: Spent 13.29s on a formula simplification. DAG size of input: 100 DAG size of output: 80 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-12 10:53:21,157 WARN L233 SmtUtils]: Spent 6.49s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-12 10:53:27,548 INFO L356 Elim1Store]: treesize reduction 72, result has 28.7 percent of original size [2022-07-12 10:53:27,548 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 4 case distinctions, treesize of input 238 treesize of output 364 [2022-07-12 10:53:30,073 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 42 proven. 115 refuted. 3 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-12 10:53:30,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:53:39,431 WARN L233 SmtUtils]: Spent 8.52s on a formula simplification that was a NOOP. DAG size: 125 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-07-12 10:53:50,297 WARN L233 SmtUtils]: Spent 10.63s on a formula simplification that was a NOOP. DAG size: 81 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-07-12 10:53:56,453 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((|v_aws_array_list_is_valid_~#required_size~0.base_13| Int)) (let ((.cse2 (+ c_aws_array_list_length_~list.offset 24))) (let ((.cse0 (let ((.cse3 (select |c_#memory_int| c_aws_array_list_length_~list.base))) (* (select .cse3 (+ c_aws_array_list_length_~list.offset 16)) (select .cse3 .cse2))))) (let ((.cse1 (select (store |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_13| (store (select |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_13|) 0 .cse0)) c_aws_array_list_length_~list.base))) (or (not (<= (mod .cse0 18446744073709551616) (mod (select .cse1 (+ c_aws_array_list_length_~list.offset 8)) 18446744073709551616))) (not (= (mod (select .cse1 .cse2) 18446744073709551616) 0))))))) (forall ((|v_aws_array_list_is_valid_~#required_size~0.base_13| Int)) (let ((.cse4 (let ((.cse5 (select |c_#memory_int| c_aws_array_list_length_~list.base))) (* (select .cse5 (+ c_aws_array_list_length_~list.offset 16)) (select .cse5 (+ c_aws_array_list_length_~list.offset 24)))))) (<= (mod .cse4 18446744073709551616) (mod (select (select (store |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_13| (store (select |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_13|) 0 .cse4)) c_aws_array_list_length_~list.base) (+ c_aws_array_list_length_~list.offset 8)) 18446744073709551616))))) is different from false [2022-07-12 10:53:56,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:53:56,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979423361] [2022-07-12 10:53:56,457 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:53:56,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692117759] [2022-07-12 10:53:56,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692117759] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:53:56,458 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:53:56,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2022-07-12 10:53:56,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011875651] [2022-07-12 10:53:56,458 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 10:53:56,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-07-12 10:53:56,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:53:56,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-07-12 10:53:56,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=3425, Unknown=46, NotChecked=118, Total=3782 [2022-07-12 10:53:56,461 INFO L87 Difference]: Start difference. First operand 162 states and 209 transitions. Second operand has 58 states, 48 states have (on average 1.9375) internal successors, (93), 44 states have internal predecessors, (93), 17 states have call successors, (23), 10 states have call predecessors, (23), 16 states have return successors, (20), 16 states have call predecessors, (20), 15 states have call successors, (20) [2022-07-12 10:54:23,443 WARN L233 SmtUtils]: Spent 8.80s on a formula simplification. DAG size of input: 104 DAG size of output: 67 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-12 10:54:36,874 WARN L233 SmtUtils]: Spent 6.63s on a formula simplification. DAG size of input: 98 DAG size of output: 61 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-12 10:54:48,468 WARN L233 SmtUtils]: Spent 8.64s on a formula simplification. DAG size of input: 99 DAG size of output: 62 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-12 10:55:27,777 WARN L233 SmtUtils]: Spent 38.95s on a formula simplification. DAG size of input: 99 DAG size of output: 68 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-12 10:55:31,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:55:31,622 INFO L93 Difference]: Finished difference Result 235 states and 312 transitions. [2022-07-12 10:55:31,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-07-12 10:55:31,623 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 48 states have (on average 1.9375) internal successors, (93), 44 states have internal predecessors, (93), 17 states have call successors, (23), 10 states have call predecessors, (23), 16 states have return successors, (20), 16 states have call predecessors, (20), 15 states have call successors, (20) Word has length 144 [2022-07-12 10:55:31,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:55:31,626 INFO L225 Difference]: With dead ends: 235 [2022-07-12 10:55:31,626 INFO L226 Difference]: Without dead ends: 229 [2022-07-12 10:55:31,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 83 SyntacticMatches, 8 SemanticMatches, 80 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2003 ImplicationChecksByTransitivity, 189.7s TimeCoverageRelationStatistics Valid=351, Invalid=6066, Unknown=67, NotChecked=158, Total=6642 [2022-07-12 10:55:31,631 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 82 mSDsluCounter, 2642 mSDsCounter, 0 mSdLazyCounter, 1649 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 2825 SdHoareTripleChecker+Invalid, 4356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2648 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 10:55:31,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 2825 Invalid, 4356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1649 Invalid, 0 Unknown, 2648 Unchecked, 1.5s Time] [2022-07-12 10:55:31,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-07-12 10:55:31,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 223. [2022-07-12 10:55:31,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 136 states have (on average 1.1691176470588236) internal successors, (159), 142 states have internal predecessors, (159), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (76), 56 states have call predecessors, (76), 58 states have call successors, (76) [2022-07-12 10:55:31,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 297 transitions. [2022-07-12 10:55:31,666 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 297 transitions. Word has length 144 [2022-07-12 10:55:31,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:55:31,667 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 297 transitions. [2022-07-12 10:55:31,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 48 states have (on average 1.9375) internal successors, (93), 44 states have internal predecessors, (93), 17 states have call successors, (23), 10 states have call predecessors, (23), 16 states have return successors, (20), 16 states have call predecessors, (20), 15 states have call successors, (20) [2022-07-12 10:55:31,667 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 297 transitions. [2022-07-12 10:55:31,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-12 10:55:31,669 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:55:31,669 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:55:31,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 10:55:31,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:55:31,884 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:55:31,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:55:31,884 INFO L85 PathProgramCache]: Analyzing trace with hash 216361017, now seen corresponding path program 1 times [2022-07-12 10:55:31,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:55:31,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371736803] [2022-07-12 10:55:31,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:55:31,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:55:31,960 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:55:31,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [725223226] [2022-07-12 10:55:31,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:55:31,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:55:31,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:55:31,967 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) [2022-07-12 10:55:32,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 10:55:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:32,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 2695 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 10:55:32,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:55:32,443 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-12 10:55:32,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:55:32,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:55:32,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371736803] [2022-07-12 10:55:32,444 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:55:32,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725223226] [2022-07-12 10:55:32,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725223226] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:55:32,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:55:32,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:55:32,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678655301] [2022-07-12 10:55:32,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:55:32,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:55:32,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:55:32,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:55:32,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:55:32,446 INFO L87 Difference]: Start difference. First operand 223 states and 297 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 10:55:32,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:55:32,483 INFO L93 Difference]: Finished difference Result 366 states and 509 transitions. [2022-07-12 10:55:32,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:55:32,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 144 [2022-07-12 10:55:32,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:55:32,486 INFO L225 Difference]: With dead ends: 366 [2022-07-12 10:55:32,486 INFO L226 Difference]: Without dead ends: 228 [2022-07-12 10:55:32,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:55:32,488 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 7 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:55:32,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 610 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 10:55:32,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-07-12 10:55:32,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 225. [2022-07-12 10:55:32,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 138 states have (on average 1.1666666666666667) internal successors, (161), 144 states have internal predecessors, (161), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (76), 56 states have call predecessors, (76), 58 states have call successors, (76) [2022-07-12 10:55:32,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 299 transitions. [2022-07-12 10:55:32,506 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 299 transitions. Word has length 144 [2022-07-12 10:55:32,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:55:32,506 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 299 transitions. [2022-07-12 10:55:32,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 10:55:32,507 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 299 transitions. [2022-07-12 10:55:32,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-12 10:55:32,509 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:55:32,509 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-12 10:55:32,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 10:55:32,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:55:32,735 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:55:32,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:55:32,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1658135113, now seen corresponding path program 1 times [2022-07-12 10:55:32,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:55:32,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823521547] [2022-07-12 10:55:32,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:55:32,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:55:32,796 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:55:32,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1367301050] [2022-07-12 10:55:32,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:55:32,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:55:32,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:55:32,798 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) [2022-07-12 10:55:32,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 10:55:33,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:33,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 2708 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-12 10:55:33,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:55:33,325 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-12 10:55:33,325 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:55:33,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:55:33,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823521547] [2022-07-12 10:55:33,325 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:55:33,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367301050] [2022-07-12 10:55:33,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367301050] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:55:33,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:55:33,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 10:55:33,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919126386] [2022-07-12 10:55:33,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:55:33,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 10:55:33,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:55:33,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 10:55:33,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-12 10:55:33,328 INFO L87 Difference]: Start difference. First operand 225 states and 299 transitions. Second operand has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 9 states have internal predecessors, (80), 3 states have call successors, (22), 2 states have call predecessors, (22), 6 states have return successors, (20), 5 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-12 10:55:33,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:55:33,534 INFO L93 Difference]: Finished difference Result 366 states and 500 transitions. [2022-07-12 10:55:33,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:55:33,540 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 9 states have internal predecessors, (80), 3 states have call successors, (22), 2 states have call predecessors, (22), 6 states have return successors, (20), 5 states have call predecessors, (20), 3 states have call successors, (20) Word has length 156 [2022-07-12 10:55:33,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:55:33,543 INFO L225 Difference]: With dead ends: 366 [2022-07-12 10:55:33,543 INFO L226 Difference]: Without dead ends: 236 [2022-07-12 10:55:33,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-07-12 10:55:33,545 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 11 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2262 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 10:55:33,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2262 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 10:55:33,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-07-12 10:55:33,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2022-07-12 10:55:33,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 148 states have (on average 1.1756756756756757) internal successors, (174), 154 states have internal predecessors, (174), 62 states have call successors, (62), 24 states have call predecessors, (62), 25 states have return successors, (87), 57 states have call predecessors, (87), 58 states have call successors, (87) [2022-07-12 10:55:33,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 323 transitions. [2022-07-12 10:55:33,577 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 323 transitions. Word has length 156 [2022-07-12 10:55:33,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:55:33,578 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 323 transitions. [2022-07-12 10:55:33,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 9 states have internal predecessors, (80), 3 states have call successors, (22), 2 states have call predecessors, (22), 6 states have return successors, (20), 5 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-12 10:55:33,578 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 323 transitions. [2022-07-12 10:55:33,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-12 10:55:33,580 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:55:33,580 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:55:33,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 10:55:33,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:55:33,788 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:55:33,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:55:33,788 INFO L85 PathProgramCache]: Analyzing trace with hash 915893085, now seen corresponding path program 2 times [2022-07-12 10:55:33,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:55:33,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910973139] [2022-07-12 10:55:33,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:55:33,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:55:33,875 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:55:33,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1818787737] [2022-07-12 10:55:33,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:55:33,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:55:33,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:55:33,880 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) [2022-07-12 10:55:33,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 10:55:34,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:55:34,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:55:34,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 2704 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-12 10:55:34,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:55:34,474 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-12 10:55:34,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:55:34,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:55:34,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910973139] [2022-07-12 10:55:34,475 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:55:34,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818787737] [2022-07-12 10:55:34,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818787737] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:55:34,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:55:34,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 10:55:34,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563096336] [2022-07-12 10:55:34,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:55:34,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 10:55:34,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:55:34,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 10:55:34,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-07-12 10:55:34,477 INFO L87 Difference]: Start difference. First operand 236 states and 323 transitions. Second operand has 13 states, 11 states have (on average 6.545454545454546) internal successors, (72), 10 states have internal predecessors, (72), 4 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-12 10:55:34,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:55:34,746 INFO L93 Difference]: Finished difference Result 380 states and 524 transitions. [2022-07-12 10:55:34,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 10:55:34,747 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.545454545454546) internal successors, (72), 10 states have internal predecessors, (72), 4 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) Word has length 150 [2022-07-12 10:55:34,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:55:34,749 INFO L225 Difference]: With dead ends: 380 [2022-07-12 10:55:34,749 INFO L226 Difference]: Without dead ends: 241 [2022-07-12 10:55:34,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-07-12 10:55:34,750 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 12 mSDsluCounter, 2267 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2481 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 10:55:34,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2481 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 10:55:34,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-07-12 10:55:34,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 236. [2022-07-12 10:55:34,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 148 states have (on average 1.1756756756756757) internal successors, (174), 154 states have internal predecessors, (174), 62 states have call successors, (62), 24 states have call predecessors, (62), 25 states have return successors, (85), 57 states have call predecessors, (85), 58 states have call successors, (85) [2022-07-12 10:55:34,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 321 transitions. [2022-07-12 10:55:34,766 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 321 transitions. Word has length 150 [2022-07-12 10:55:34,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:55:34,767 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 321 transitions. [2022-07-12 10:55:34,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.545454545454546) internal successors, (72), 10 states have internal predecessors, (72), 4 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-12 10:55:34,767 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 321 transitions. [2022-07-12 10:55:34,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-12 10:55:34,769 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:55:34,769 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:55:34,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-12 10:55:34,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:55:34,983 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:55:34,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:55:34,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1850338375, now seen corresponding path program 1 times [2022-07-12 10:55:34,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:55:34,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124799344] [2022-07-12 10:55:34,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:55:34,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:55:35,055 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:55:35,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1754693410] [2022-07-12 10:55:35,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:55:35,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:55:35,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:55:35,058 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) [2022-07-12 10:55:35,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 10:55:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:35,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 2705 conjuncts, 115 conjunts are in the unsatisfiable core [2022-07-12 10:55:35,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:55:35,864 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_841 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_841))) (exists ((v_ArrVal_842 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_842))))) is different from true [2022-07-12 10:55:36,198 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 10:55:36,199 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-07-12 10:55:36,211 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 10:55:36,212 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-07-12 10:55:36,560 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 141 proven. 1 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-12 10:55:36,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:55:37,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:55:37,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124799344] [2022-07-12 10:55:37,509 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:55:37,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754693410] [2022-07-12 10:55:37,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754693410] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:55:37,510 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:55:37,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2022-07-12 10:55:37,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717103939] [2022-07-12 10:55:37,510 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 10:55:37,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-12 10:55:37,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:55:37,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-12 10:55:37,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1114, Unknown=33, NotChecked=68, Total=1332 [2022-07-12 10:55:37,512 INFO L87 Difference]: Start difference. First operand 236 states and 321 transitions. Second operand has 24 states, 23 states have (on average 3.347826086956522) internal successors, (77), 22 states have internal predecessors, (77), 9 states have call successors, (22), 6 states have call predecessors, (22), 7 states have return successors, (19), 8 states have call predecessors, (19), 9 states have call successors, (19) [2022-07-12 10:55:38,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:55:38,973 INFO L93 Difference]: Finished difference Result 429 states and 594 transitions. [2022-07-12 10:55:38,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-12 10:55:38,974 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.347826086956522) internal successors, (77), 22 states have internal predecessors, (77), 9 states have call successors, (22), 6 states have call predecessors, (22), 7 states have return successors, (19), 8 states have call predecessors, (19), 9 states have call successors, (19) Word has length 144 [2022-07-12 10:55:38,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:55:38,976 INFO L225 Difference]: With dead ends: 429 [2022-07-12 10:55:38,976 INFO L226 Difference]: Without dead ends: 279 [2022-07-12 10:55:38,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 177 SyntacticMatches, 5 SemanticMatches, 50 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=262, Invalid=2243, Unknown=49, NotChecked=98, Total=2652 [2022-07-12 10:55:38,978 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 147 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 1845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 792 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 10:55:38,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 1176 Invalid, 1845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 987 Invalid, 0 Unknown, 792 Unchecked, 0.9s Time] [2022-07-12 10:55:38,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-07-12 10:55:38,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 269. [2022-07-12 10:55:38,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 170 states have (on average 1.1529411764705881) internal successors, (196), 177 states have internal predecessors, (196), 68 states have call successors, (68), 30 states have call predecessors, (68), 30 states have return successors, (102), 61 states have call predecessors, (102), 64 states have call successors, (102) [2022-07-12 10:55:38,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 366 transitions. [2022-07-12 10:55:38,997 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 366 transitions. Word has length 144 [2022-07-12 10:55:38,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:55:38,997 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 366 transitions. [2022-07-12 10:55:38,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.347826086956522) internal successors, (77), 22 states have internal predecessors, (77), 9 states have call successors, (22), 6 states have call predecessors, (22), 7 states have return successors, (19), 8 states have call predecessors, (19), 9 states have call successors, (19) [2022-07-12 10:55:38,997 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 366 transitions. [2022-07-12 10:55:38,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-12 10:55:38,999 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:55:38,999 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:55:39,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-12 10:55:39,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-12 10:55:39,215 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:55:39,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:55:39,216 INFO L85 PathProgramCache]: Analyzing trace with hash -545923538, now seen corresponding path program 1 times [2022-07-12 10:55:39,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:55:39,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964776635] [2022-07-12 10:55:39,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:55:39,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:55:39,280 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:55:39,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1621176713] [2022-07-12 10:55:39,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:55:39,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:55:39,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:55:39,282 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) [2022-07-12 10:55:39,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-12 10:55:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:39,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 2744 conjuncts, 107 conjunts are in the unsatisfiable core [2022-07-12 10:55:39,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:55:39,824 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 10:55:39,956 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-12 10:55:40,000 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 15 [2022-07-12 10:55:44,086 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-12 10:55:44,086 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 32 [2022-07-12 10:55:44,150 INFO L356 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2022-07-12 10:55:44,151 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 33 [2022-07-12 10:55:44,299 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1021 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1021))) is different from true [2022-07-12 10:55:46,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:55:46,391 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2022-07-12 10:55:46,402 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-12 10:55:46,402 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11