./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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_hash_table_foreach_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 44162e1142387f3513ac3cf9af71d3c7aa6399e99cd364d08a07ceb8efc80a41 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:05:21,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:05:21,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:05:21,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:05:21,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:05:21,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:05:21,895 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:05:21,897 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:05:21,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:05:21,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:05:21,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:05:21,905 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:05:21,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:05:21,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:05:21,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:05:21,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:05:21,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:05:21,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:05:21,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:05:21,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:05:21,922 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:05:21,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:05:21,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:05:21,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:05:21,929 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:05:21,930 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:05:21,931 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:05:21,931 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:05:21,932 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:05:21,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:05:21,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:05:21,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:05:21,935 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:05:21,936 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:05:21,937 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:05:21,938 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:05:21,938 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:05:21,938 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:05:21,939 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:05:21,939 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:05:21,940 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:05:21,941 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:05:21,968 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:05:21,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:05:21,972 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:05:21,972 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:05:21,973 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:05:21,973 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:05:21,974 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:05:21,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:05:21,974 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:05:21,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:05:21,975 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:05:21,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:05:21,976 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:05:21,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:05:21,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:05:21,976 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:05:21,976 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:05:21,977 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:05:21,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:05:21,977 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:05:21,977 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:05:21,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:05:21,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:05:21,978 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:05:21,978 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:05:21,978 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:05:21,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:05:21,978 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:05:21,979 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:05:21,979 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:05:21,979 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:05:21,979 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44162e1142387f3513ac3cf9af71d3c7aa6399e99cd364d08a07ceb8efc80a41 [2021-12-14 17:05:22,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:05:22,273 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:05:22,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:05:22,277 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:05:22,277 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:05:22,278 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i [2021-12-14 17:05:22,336 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61e57aed4/f6b91451a55c493481c43fc290861192/FLAGa3c6aa0c6 [2021-12-14 17:05:22,959 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:05:22,959 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i [2021-12-14 17:05:23,001 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61e57aed4/f6b91451a55c493481c43fc290861192/FLAGa3c6aa0c6 [2021-12-14 17:05:23,088 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61e57aed4/f6b91451a55c493481c43fc290861192 [2021-12-14 17:05:23,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:05:23,091 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:05:23,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:05:23,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:05:23,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:05:23,105 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:05:23" (1/1) ... [2021-12-14 17:05:23,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d24d8d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:23, skipping insertion in model container [2021-12-14 17:05:23,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:05:23" (1/1) ... [2021-12-14 17:05:23,112 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:05:23,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:05:23,440 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_hash_table_foreach_harness.i[4496,4509] [2021-12-14 17:05:23,449 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_hash_table_foreach_harness.i[4556,4569] [2021-12-14 17:05:24,219 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:24,220 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:24,222 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:24,223 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:24,225 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:24,235 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:24,235 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:24,237 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:24,237 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:24,239 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:24,240 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:24,240 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:24,241 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:24,500 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-14 17:05:24,501 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-14 17:05:24,502 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-14 17:05:24,505 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-14 17:05:24,506 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-14 17:05:24,507 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-14 17:05:24,508 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-14 17:05:24,508 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-14 17:05:24,509 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-14 17:05:24,509 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-14 17:05:24,640 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-14 17:05:24,888 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:24,889 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:24,931 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:24,931 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:24,935 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:24,935 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:24,948 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:24,950 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:24,952 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:24,952 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:24,952 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:24,953 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:24,953 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:24,981 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:05:25,012 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:05:25,033 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_hash_table_foreach_harness.i[4496,4509] [2021-12-14 17:05:25,034 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_hash_table_foreach_harness.i[4556,4569] [2021-12-14 17:05:25,071 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:25,072 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:25,072 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:25,072 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:25,073 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:25,081 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:25,082 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:25,084 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:25,084 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:25,085 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:25,086 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:25,086 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:25,086 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:25,113 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-14 17:05:25,114 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-14 17:05:25,115 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-14 17:05:25,115 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-14 17:05:25,116 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-14 17:05:25,116 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-14 17:05:25,117 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-14 17:05:25,117 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-14 17:05:25,117 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-14 17:05:25,118 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-14 17:05:25,141 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-14 17:05:25,265 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:25,265 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:25,270 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:25,271 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:25,273 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:25,273 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:25,284 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:25,284 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:25,285 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:25,285 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:25,285 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:25,286 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:25,287 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:05:25,308 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:05:25,520 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:05:25,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:25 WrapperNode [2021-12-14 17:05:25,521 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:05:25,522 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:05:25,522 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:05:25,522 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:05:25,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:25" (1/1) ... [2021-12-14 17:05:25,624 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:25" (1/1) ... [2021-12-14 17:05:25,702 INFO L137 Inliner]: procedures = 775, calls = 2435, calls flagged for inlining = 69, calls inlined = 18, statements flattened = 938 [2021-12-14 17:05:25,702 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:05:25,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:05:25,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:05:25,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:05:25,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:25" (1/1) ... [2021-12-14 17:05:25,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:25" (1/1) ... [2021-12-14 17:05:25,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:25" (1/1) ... [2021-12-14 17:05:25,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:25" (1/1) ... [2021-12-14 17:05:25,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:25" (1/1) ... [2021-12-14 17:05:25,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:25" (1/1) ... [2021-12-14 17:05:25,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:25" (1/1) ... [2021-12-14 17:05:25,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:05:25,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:05:25,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:05:25,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:05:25,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:25" (1/1) ... [2021-12-14 17:05:25,847 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:05:25,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:05:25,868 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 17:05:25,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 17:05:25,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-14 17:05:25,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:05:25,905 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-14 17:05:25,905 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-14 17:05:25,905 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-14 17:05:25,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-14 17:05:25,906 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-12-14 17:05:25,906 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-12-14 17:05:25,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:05:25,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:05:25,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:05:25,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:05:25,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:05:25,907 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-14 17:05:25,907 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-14 17:05:25,907 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-14 17:05:25,907 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-14 17:05:25,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-14 17:05:25,908 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-14 17:05:25,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:05:25,908 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-12-14 17:05:25,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-12-14 17:05:25,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:05:25,908 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-14 17:05:25,908 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-14 17:05:25,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:05:25,909 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-12-14 17:05:25,909 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-12-14 17:05:25,909 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2021-12-14 17:05:25,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2021-12-14 17:05:25,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:05:25,910 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-12-14 17:05:25,910 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-12-14 17:05:25,910 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-14 17:05:25,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-14 17:05:25,910 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2021-12-14 17:05:25,911 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2021-12-14 17:05:25,911 INFO L130 BoogieDeclarations]: Found specification of procedure s_get_next_element [2021-12-14 17:05:25,911 INFO L138 BoogieDeclarations]: Found implementation of procedure s_get_next_element [2021-12-14 17:05:25,911 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 17:05:25,911 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 17:05:25,912 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_int [2021-12-14 17:05:25,912 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_int [2021-12-14 17:05:25,913 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_is_valid [2021-12-14 17:05:25,913 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_is_valid [2021-12-14 17:05:25,913 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-12-14 17:05:25,913 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-12-14 17:05:25,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:05:25,914 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-14 17:05:25,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-14 17:05:25,914 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-12-14 17:05:25,914 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-12-14 17:05:25,919 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_entry [2021-12-14 17:05:25,920 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_entry [2021-12-14 17:05:25,920 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-14 17:05:25,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-14 17:05:25,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:05:26,342 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:05:26,345 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:05:26,569 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##35: assume !true; [2021-12-14 17:05:26,570 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !true; [2021-12-14 17:05:27,184 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !true; [2021-12-14 17:05:27,199 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:05:27,206 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:05:27,206 INFO L301 CfgBuilder]: Removed 13 assume(true) statements. [2021-12-14 17:05:27,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:05:27 BoogieIcfgContainer [2021-12-14 17:05:27,208 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:05:27,209 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:05:27,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:05:27,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:05:27,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:05:23" (1/3) ... [2021-12-14 17:05:27,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9eedb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:05:27, skipping insertion in model container [2021-12-14 17:05:27,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:05:25" (2/3) ... [2021-12-14 17:05:27,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9eedb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:05:27, skipping insertion in model container [2021-12-14 17:05:27,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:05:27" (3/3) ... [2021-12-14 17:05:27,214 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_foreach_harness.i [2021-12-14 17:05:27,218 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:05:27,218 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:05:27,255 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:05:27,260 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 17:05:27,260 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:05:27,277 INFO L276 IsEmpty]: Start isEmpty. Operand has 288 states, 187 states have (on average 1.267379679144385) internal successors, (237), 184 states have internal predecessors, (237), 81 states have call successors, (81), 22 states have call predecessors, (81), 22 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2021-12-14 17:05:27,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-14 17:05:27,286 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:27,286 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:27,287 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:27,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:27,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1669380125, now seen corresponding path program 1 times [2021-12-14 17:05:27,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:05:27,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413049324] [2021-12-14 17:05:27,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:27,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:05:27,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:27,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:27,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:05:27,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:27,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:05:27,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:27,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:05:27,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:27,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:05:27,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:05:27,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413049324] [2021-12-14 17:05:27,827 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-14 17:05:27,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461354509] [2021-12-14 17:05:27,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:27,827 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:05:27,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:05:27,835 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:05:27,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 17:05:28,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:28,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 2413 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-14 17:05:28,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:05:28,576 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-12-14 17:05:28,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:05:28,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461354509] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:05:28,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:05:28,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 17:05:28,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993570404] [2021-12-14 17:05:28,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:05:28,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 17:05:28,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:05:28,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 17:05:28,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:05:28,606 INFO L87 Difference]: Start difference. First operand has 288 states, 187 states have (on average 1.267379679144385) internal successors, (237), 184 states have internal predecessors, (237), 81 states have call successors, (81), 22 states have call predecessors, (81), 22 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-14 17:05:28,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:05:28,664 INFO L93 Difference]: Finished difference Result 567 states and 831 transitions. [2021-12-14 17:05:28,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 17:05:28,668 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 120 [2021-12-14 17:05:28,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:05:28,677 INFO L225 Difference]: With dead ends: 567 [2021-12-14 17:05:28,680 INFO L226 Difference]: Without dead ends: 282 [2021-12-14 17:05:28,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:05:28,694 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:05:28,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:05:28,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-12-14 17:05:28,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2021-12-14 17:05:28,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 178 states have (on average 1.2303370786516854) internal successors, (219), 179 states have internal predecessors, (219), 81 states have call successors, (81), 22 states have call predecessors, (81), 22 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2021-12-14 17:05:28,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 380 transitions. [2021-12-14 17:05:28,778 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 380 transitions. Word has length 120 [2021-12-14 17:05:28,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:05:28,778 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 380 transitions. [2021-12-14 17:05:28,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-14 17:05:28,779 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 380 transitions. [2021-12-14 17:05:28,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-14 17:05:28,786 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:28,786 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:28,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-14 17:05:28,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-14 17:05:28,995 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:28,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:28,996 INFO L85 PathProgramCache]: Analyzing trace with hash -262655291, now seen corresponding path program 1 times [2021-12-14 17:05:28,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:05:28,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074289887] [2021-12-14 17:05:28,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:28,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:05:29,060 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 17:05:29,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [879469105] [2021-12-14 17:05:29,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:29,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:05:29,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:05:29,062 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:05:29,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 17:05:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:29,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 2441 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-14 17:05:29,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:05:29,888 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-12-14 17:05:29,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:05:30,184 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-12-14 17:05:30,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:05:30,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074289887] [2021-12-14 17:05:30,185 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 17:05:30,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879469105] [2021-12-14 17:05:30,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879469105] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-14 17:05:30,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:05:30,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2021-12-14 17:05:30,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616950635] [2021-12-14 17:05:30,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:05:30,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 17:05:30,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:05:30,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 17:05:30,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-12-14 17:05:30,189 INFO L87 Difference]: Start difference. First operand 282 states and 380 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-14 17:05:30,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:05:30,612 INFO L93 Difference]: Finished difference Result 512 states and 707 transitions. [2021-12-14 17:05:30,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 17:05:30,613 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) Word has length 126 [2021-12-14 17:05:30,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:05:30,617 INFO L225 Difference]: With dead ends: 512 [2021-12-14 17:05:30,622 INFO L226 Difference]: Without dead ends: 299 [2021-12-14 17:05:30,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-12-14 17:05:30,624 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 407 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 2012 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 17:05:30,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [421 Valid, 2012 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 17:05:30,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-12-14 17:05:30,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2021-12-14 17:05:30,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 188 states have (on average 1.2287234042553192) internal successors, (231), 190 states have internal predecessors, (231), 86 states have call successors, (86), 23 states have call predecessors, (86), 24 states have return successors, (92), 85 states have call predecessors, (92), 85 states have call successors, (92) [2021-12-14 17:05:30,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 409 transitions. [2021-12-14 17:05:30,658 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 409 transitions. Word has length 126 [2021-12-14 17:05:30,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:05:30,658 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 409 transitions. [2021-12-14 17:05:30,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-14 17:05:30,659 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 409 transitions. [2021-12-14 17:05:30,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-14 17:05:30,660 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:30,661 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:30,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-14 17:05:30,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-12-14 17:05:30,868 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:30,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:30,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1695610635, now seen corresponding path program 1 times [2021-12-14 17:05:30,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:05:30,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52718540] [2021-12-14 17:05:30,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:30,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:05:30,946 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 17:05:30,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [254898111] [2021-12-14 17:05:30,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:30,947 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:05:30,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:05:30,948 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:05:30,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-14 17:05:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:31,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 2446 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-14 17:05:31,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:05:31,694 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-12-14 17:05:31,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:05:31,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:05:31,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52718540] [2021-12-14 17:05:31,695 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 17:05:31,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254898111] [2021-12-14 17:05:31,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254898111] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:05:31,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:05:31,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:05:31,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765640241] [2021-12-14 17:05:31,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:05:31,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:05:31,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:05:31,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:05:31,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:05:31,700 INFO L87 Difference]: Start difference. First operand 299 states and 409 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-14 17:05:31,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:05:31,739 INFO L93 Difference]: Finished difference Result 558 states and 771 transitions. [2021-12-14 17:05:31,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:05:31,740 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 127 [2021-12-14 17:05:31,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:05:31,743 INFO L225 Difference]: With dead ends: 558 [2021-12-14 17:05:31,743 INFO L226 Difference]: Without dead ends: 304 [2021-12-14 17:05:31,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:05:31,745 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 2 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:05:31,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1504 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:05:31,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-12-14 17:05:31,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2021-12-14 17:05:31,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 192 states have (on average 1.2239583333333333) internal successors, (235), 194 states have internal predecessors, (235), 86 states have call successors, (86), 23 states have call predecessors, (86), 25 states have return successors, (93), 86 states have call predecessors, (93), 85 states have call successors, (93) [2021-12-14 17:05:31,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 414 transitions. [2021-12-14 17:05:31,760 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 414 transitions. Word has length 127 [2021-12-14 17:05:31,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:05:31,761 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 414 transitions. [2021-12-14 17:05:31,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-14 17:05:31,761 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 414 transitions. [2021-12-14 17:05:31,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-14 17:05:31,762 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:31,762 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:31,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-14 17:05:31,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:05:31,979 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:31,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:31,979 INFO L85 PathProgramCache]: Analyzing trace with hash 818445258, now seen corresponding path program 1 times [2021-12-14 17:05:31,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:05:31,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992772926] [2021-12-14 17:05:31,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:31,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:05:32,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:32,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:05:32,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:05:32,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:05:32,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:05:32,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:32,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:05:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:05:32,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:05:32,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:05:32,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 17:05:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 17:05:32,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 17:05:32,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-14 17:05:32,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-14 17:05:32,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-14 17:05:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-14 17:05:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 17:05:32,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:32,577 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-12-14 17:05:32,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:05:32,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992772926] [2021-12-14 17:05:32,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992772926] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:05:32,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195249223] [2021-12-14 17:05:32,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:32,579 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:05:32,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:05:32,580 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:05:32,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-14 17:05:33,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:33,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 2450 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-14 17:05:33,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:05:33,347 INFO L388 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 11 treesize of output 7 [2021-12-14 17:05:33,724 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-14 17:05:33,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:05:33,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195249223] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:05:33,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:05:33,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14] total 22 [2021-12-14 17:05:33,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366674022] [2021-12-14 17:05:33,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:05:33,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-14 17:05:33,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:05:33,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-14 17:05:33,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2021-12-14 17:05:33,726 INFO L87 Difference]: Start difference. First operand 304 states and 414 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-12-14 17:05:33,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:05:33,812 INFO L93 Difference]: Finished difference Result 556 states and 768 transitions. [2021-12-14 17:05:33,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 17:05:33,813 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 133 [2021-12-14 17:05:33,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:05:33,816 INFO L225 Difference]: With dead ends: 556 [2021-12-14 17:05:33,816 INFO L226 Difference]: Without dead ends: 313 [2021-12-14 17:05:33,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2021-12-14 17:05:33,818 INFO L933 BasicCegarLoop]: 378 mSDtfsCounter, 11 mSDsluCounter, 2473 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2851 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 122 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:05:33,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 2851 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 122 Unchecked, 0.0s Time] [2021-12-14 17:05:33,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-12-14 17:05:33,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2021-12-14 17:05:33,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 200 states have (on average 1.225) internal successors, (245), 202 states have internal predecessors, (245), 86 states have call successors, (86), 24 states have call predecessors, (86), 26 states have return successors, (94), 86 states have call predecessors, (94), 85 states have call successors, (94) [2021-12-14 17:05:33,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 425 transitions. [2021-12-14 17:05:33,833 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 425 transitions. Word has length 133 [2021-12-14 17:05:33,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:05:33,834 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 425 transitions. [2021-12-14 17:05:33,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-12-14 17:05:33,834 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 425 transitions. [2021-12-14 17:05:33,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-14 17:05:33,836 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:33,836 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:33,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-14 17:05:34,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:05:34,047 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:34,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:34,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1772385416, now seen corresponding path program 1 times [2021-12-14 17:05:34,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:05:34,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073466652] [2021-12-14 17:05:34,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:34,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:05:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:34,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:34,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:34,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:05:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:34,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:05:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:34,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:05:34,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:34,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:05:34,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:34,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:34,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:34,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:05:34,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:34,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:05:34,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:34,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:05:34,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:34,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:34,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:05:34,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:34,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 17:05:34,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:34,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 17:05:34,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:34,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 17:05:34,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:34,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-14 17:05:34,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:34,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-14 17:05:34,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:34,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-14 17:05:34,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:34,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-14 17:05:34,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:34,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 17:05:34,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:34,482 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-12-14 17:05:34,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:05:34,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073466652] [2021-12-14 17:05:34,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073466652] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:05:34,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830423258] [2021-12-14 17:05:34,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:34,484 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:05:34,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:05:34,487 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:05:34,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-14 17:05:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:34,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 2445 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 17:05:34,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:05:35,235 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-14 17:05:35,236 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:05:35,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830423258] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:05:35,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:05:35,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2021-12-14 17:05:35,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100303329] [2021-12-14 17:05:35,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:05:35,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:05:35,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:05:35,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:05:35,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-12-14 17:05:35,238 INFO L87 Difference]: Start difference. First operand 313 states and 425 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-14 17:05:35,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:05:35,450 INFO L93 Difference]: Finished difference Result 560 states and 778 transitions. [2021-12-14 17:05:35,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 17:05:35,451 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 133 [2021-12-14 17:05:35,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:05:35,453 INFO L225 Difference]: With dead ends: 560 [2021-12-14 17:05:35,453 INFO L226 Difference]: Without dead ends: 315 [2021-12-14 17:05:35,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-12-14 17:05:35,455 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 413 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:05:35,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [413 Valid, 925 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 17:05:35,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-12-14 17:05:35,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2021-12-14 17:05:35,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 201 states have (on average 1.2189054726368158) internal successors, (245), 203 states have internal predecessors, (245), 87 states have call successors, (87), 24 states have call predecessors, (87), 26 states have return successors, (98), 87 states have call predecessors, (98), 86 states have call successors, (98) [2021-12-14 17:05:35,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 430 transitions. [2021-12-14 17:05:35,476 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 430 transitions. Word has length 133 [2021-12-14 17:05:35,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:05:35,477 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 430 transitions. [2021-12-14 17:05:35,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-14 17:05:35,479 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 430 transitions. [2021-12-14 17:05:35,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-14 17:05:35,480 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:35,480 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:35,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-14 17:05:35,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:05:35,692 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:35,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:35,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1889144309, now seen corresponding path program 1 times [2021-12-14 17:05:35,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:05:35,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011559939] [2021-12-14 17:05:35,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:35,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:05:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:35,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:35,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:35,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:05:35,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:35,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:05:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:35,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:05:35,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:35,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:05:35,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:35,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:35,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:35,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:35,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:05:35,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:35,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:05:35,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:35,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:05:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:35,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:35,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:05:35,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:36,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:05:36,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:36,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 17:05:36,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:36,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 17:05:36,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:36,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-14 17:05:36,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:36,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-14 17:05:36,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:36,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-14 17:05:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:36,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 17:05:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:36,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-14 17:05:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:36,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-14 17:05:36,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:36,149 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-12-14 17:05:36,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:05:36,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011559939] [2021-12-14 17:05:36,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011559939] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:05:36,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852285970] [2021-12-14 17:05:36,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:36,151 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:05:36,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:05:36,156 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:05:36,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-14 17:05:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:36,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 2474 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-14 17:05:36,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:05:37,715 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= 0 (select (select |c_#memory_$Pointer$.offset| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset)))) (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= (select (select |c_#memory_$Pointer$.base| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset) 0)))) is different from true [2021-12-14 17:05:43,545 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-12-14 17:05:43,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:05:43,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852285970] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:05:43,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:05:43,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2021-12-14 17:05:43,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368008778] [2021-12-14 17:05:43,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:05:43,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 17:05:43,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:05:43,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 17:05:43,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=202, Unknown=3, NotChecked=28, Total=272 [2021-12-14 17:05:43,548 INFO L87 Difference]: Start difference. First operand 315 states and 430 transitions. Second operand has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-14 17:05:43,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:05:43,816 INFO L93 Difference]: Finished difference Result 567 states and 804 transitions. [2021-12-14 17:05:43,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 17:05:43,817 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) Word has length 139 [2021-12-14 17:05:43,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:05:43,820 INFO L225 Difference]: With dead ends: 567 [2021-12-14 17:05:43,820 INFO L226 Difference]: Without dead ends: 318 [2021-12-14 17:05:43,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=54, Invalid=253, Unknown=3, NotChecked=32, Total=342 [2021-12-14 17:05:43,822 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 5 mSDsluCounter, 1711 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2087 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 512 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:05:43,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 2087 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 512 Unchecked, 0.2s Time] [2021-12-14 17:05:43,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-12-14 17:05:43,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 317. [2021-12-14 17:05:43,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 203 states have (on average 1.2167487684729064) internal successors, (247), 204 states have internal predecessors, (247), 87 states have call successors, (87), 25 states have call predecessors, (87), 26 states have return successors, (98), 87 states have call predecessors, (98), 86 states have call successors, (98) [2021-12-14 17:05:43,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 432 transitions. [2021-12-14 17:05:43,842 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 432 transitions. Word has length 139 [2021-12-14 17:05:43,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:05:43,842 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 432 transitions. [2021-12-14 17:05:43,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-14 17:05:43,843 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 432 transitions. [2021-12-14 17:05:43,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-14 17:05:43,845 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:43,845 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:43,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-14 17:05:44,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:05:44,060 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:44,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:44,060 INFO L85 PathProgramCache]: Analyzing trace with hash -817837060, now seen corresponding path program 1 times [2021-12-14 17:05:44,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:05:44,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359394208] [2021-12-14 17:05:44,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:44,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:05:44,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:44,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:05:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:05:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:05:44,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:05:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:44,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:44,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:05:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:05:44,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:05:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:44,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:05:44,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:05:44,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:44,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 17:05:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 17:05:44,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 17:05:44,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:05:44,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-14 17:05:44,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-14 17:05:44,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-14 17:05:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-14 17:05:44,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:44,762 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-12-14 17:05:44,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:05:44,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359394208] [2021-12-14 17:05:44,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359394208] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:05:44,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:05:44,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-14 17:05:44,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031084448] [2021-12-14 17:05:44,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:05:44,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-14 17:05:44,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:05:44,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-14 17:05:44,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-12-14 17:05:44,765 INFO L87 Difference]: Start difference. First operand 317 states and 432 transitions. Second operand has 18 states, 16 states have (on average 4.375) internal successors, (70), 13 states have internal predecessors, (70), 8 states have call successors, (24), 7 states have call predecessors, (24), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2021-12-14 17:05:47,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:05:47,523 INFO L93 Difference]: Finished difference Result 573 states and 800 transitions. [2021-12-14 17:05:47,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-14 17:05:47,524 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 4.375) internal successors, (70), 13 states have internal predecessors, (70), 8 states have call successors, (24), 7 states have call predecessors, (24), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 144 [2021-12-14 17:05:47,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:05:47,526 INFO L225 Difference]: With dead ends: 573 [2021-12-14 17:05:47,526 INFO L226 Difference]: Without dead ends: 345 [2021-12-14 17:05:47,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=205, Invalid=985, Unknown=0, NotChecked=0, Total=1190 [2021-12-14 17:05:47,528 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 602 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 3102 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 2114 SdHoareTripleChecker+Invalid, 3627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 3102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-14 17:05:47,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [626 Valid, 2114 Invalid, 3627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 3102 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-14 17:05:47,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-12-14 17:05:47,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 326. [2021-12-14 17:05:47,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 209 states have (on average 1.2200956937799043) internal successors, (255), 211 states have internal predecessors, (255), 89 states have call successors, (89), 25 states have call predecessors, (89), 27 states have return successors, (109), 89 states have call predecessors, (109), 88 states have call successors, (109) [2021-12-14 17:05:47,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 453 transitions. [2021-12-14 17:05:47,568 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 453 transitions. Word has length 144 [2021-12-14 17:05:47,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:05:47,568 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 453 transitions. [2021-12-14 17:05:47,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 4.375) internal successors, (70), 13 states have internal predecessors, (70), 8 states have call successors, (24), 7 states have call predecessors, (24), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2021-12-14 17:05:47,569 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 453 transitions. [2021-12-14 17:05:47,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-14 17:05:47,569 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:47,570 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:47,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 17:05:47,570 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:47,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:47,570 INFO L85 PathProgramCache]: Analyzing trace with hash -951850566, now seen corresponding path program 1 times [2021-12-14 17:05:47,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:05:47,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752194719] [2021-12-14 17:05:47,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:47,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:05:47,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:47,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:47,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:47,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:05:47,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:47,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:05:47,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:47,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:05:47,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:47,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:05:47,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:47,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:47,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:47,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:47,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:05:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:47,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:05:47,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:48,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:05:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:48,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:48,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:48,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:05:48,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:48,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:05:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:48,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:48,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 17:05:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:48,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 17:05:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:48,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 17:05:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:48,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:05:48,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:48,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-14 17:05:48,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:48,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-14 17:05:48,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:48,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-14 17:05:48,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:48,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-14 17:05:48,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:48,402 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-12-14 17:05:48,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:05:48,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752194719] [2021-12-14 17:05:48,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752194719] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:05:48,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483102490] [2021-12-14 17:05:48,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:48,403 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:05:48,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:05:48,404 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:05:48,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-14 17:05:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:48,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 2499 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-14 17:05:48,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:05:49,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:05:49,186 INFO L388 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 16 treesize of output 17 [2021-12-14 17:05:49,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-14 17:05:49,473 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-14 17:05:49,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:05:49,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483102490] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:05:49,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:05:49,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [18] total 29 [2021-12-14 17:05:49,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145512060] [2021-12-14 17:05:49,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:05:49,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-14 17:05:49,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:05:49,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-14 17:05:49,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2021-12-14 17:05:49,475 INFO L87 Difference]: Start difference. First operand 326 states and 453 transitions. Second operand has 13 states, 11 states have (on average 6.909090909090909) internal successors, (76), 12 states have internal predecessors, (76), 8 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) [2021-12-14 17:05:49,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:05:49,936 INFO L93 Difference]: Finished difference Result 635 states and 879 transitions. [2021-12-14 17:05:49,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-14 17:05:49,937 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.909090909090909) internal successors, (76), 12 states have internal predecessors, (76), 8 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) Word has length 144 [2021-12-14 17:05:49,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:05:49,939 INFO L225 Difference]: With dead ends: 635 [2021-12-14 17:05:49,939 INFO L226 Difference]: Without dead ends: 376 [2021-12-14 17:05:49,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 173 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=152, Invalid=1330, Unknown=0, NotChecked=0, Total=1482 [2021-12-14 17:05:49,941 INFO L933 BasicCegarLoop]: 381 mSDtfsCounter, 478 mSDsluCounter, 2547 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 2928 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 17:05:49,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 2928 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 351 Invalid, 0 Unknown, 91 Unchecked, 0.3s Time] [2021-12-14 17:05:49,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-12-14 17:05:49,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 372. [2021-12-14 17:05:49,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 246 states have (on average 1.2276422764227641) internal successors, (302), 247 states have internal predecessors, (302), 91 states have call successors, (91), 33 states have call predecessors, (91), 34 states have return successors, (101), 91 states have call predecessors, (101), 90 states have call successors, (101) [2021-12-14 17:05:49,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 494 transitions. [2021-12-14 17:05:49,963 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 494 transitions. Word has length 144 [2021-12-14 17:05:49,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:05:49,963 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 494 transitions. [2021-12-14 17:05:49,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.909090909090909) internal successors, (76), 12 states have internal predecessors, (76), 8 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) [2021-12-14 17:05:49,964 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 494 transitions. [2021-12-14 17:05:49,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-14 17:05:49,965 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:49,965 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:49,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-14 17:05:50,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:05:50,179 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:50,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:50,180 INFO L85 PathProgramCache]: Analyzing trace with hash 2132172247, now seen corresponding path program 1 times [2021-12-14 17:05:50,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:05:50,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672695909] [2021-12-14 17:05:50,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:50,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:05:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:50,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:50,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:05:50,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:50,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:05:50,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:50,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:05:50,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:50,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:05:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:50,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:50,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:50,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:50,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:05:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:50,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:05:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:50,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:05:50,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:50,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:50,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:50,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:05:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:50,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:05:50,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:50,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:50,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:50,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 17:05:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:50,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 17:05:50,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:50,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 17:05:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:50,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:05:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:50,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 17:05:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:50,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:50,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:50,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:05:50,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:50,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-14 17:05:50,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:50,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-14 17:05:50,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:51,010 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-12-14 17:05:51,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:05:51,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672695909] [2021-12-14 17:05:51,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672695909] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:05:51,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957608933] [2021-12-14 17:05:51,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:51,011 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:05:51,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:05:51,016 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:05:51,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-14 17:05:51,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:51,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 2515 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-14 17:05:51,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:05:51,873 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-12-14 17:05:51,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:05:51,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957608933] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:05:51,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:05:51,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [18] total 23 [2021-12-14 17:05:51,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034551879] [2021-12-14 17:05:51,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:05:51,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:05:51,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:05:51,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:05:51,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2021-12-14 17:05:51,875 INFO L87 Difference]: Start difference. First operand 372 states and 494 transitions. Second operand has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-14 17:05:52,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:05:52,050 INFO L93 Difference]: Finished difference Result 685 states and 921 transitions. [2021-12-14 17:05:52,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:05:52,051 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 148 [2021-12-14 17:05:52,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:05:52,053 INFO L225 Difference]: With dead ends: 685 [2021-12-14 17:05:52,053 INFO L226 Difference]: Without dead ends: 384 [2021-12-14 17:05:52,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2021-12-14 17:05:52,055 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 2 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2091 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:05:52,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2091 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:05:52,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-12-14 17:05:52,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 375. [2021-12-14 17:05:52,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 248 states have (on average 1.2258064516129032) internal successors, (304), 250 states have internal predecessors, (304), 91 states have call successors, (91), 33 states have call predecessors, (91), 35 states have return successors, (104), 91 states have call predecessors, (104), 90 states have call successors, (104) [2021-12-14 17:05:52,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 499 transitions. [2021-12-14 17:05:52,076 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 499 transitions. Word has length 148 [2021-12-14 17:05:52,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:05:52,076 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 499 transitions. [2021-12-14 17:05:52,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-14 17:05:52,077 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 499 transitions. [2021-12-14 17:05:52,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-14 17:05:52,078 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:52,078 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:52,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-14 17:05:52,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-12-14 17:05:52,310 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:52,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:52,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1795320927, now seen corresponding path program 2 times [2021-12-14 17:05:52,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:05:52,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984218404] [2021-12-14 17:05:52,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:52,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:05:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:52,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:05:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:05:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:05:52,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:05:52,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:52,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:05:52,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:05:52,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:05:52,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:52,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:05:52,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:05:52,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:52,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 17:05:52,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 17:05:52,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:05:52,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:52,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-14 17:05:52,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 17:05:52,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:52,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-14 17:05:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:53,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:53,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:53,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:05:53,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:53,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-14 17:05:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:53,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-14 17:05:53,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:53,086 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-14 17:05:53,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:05:53,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984218404] [2021-12-14 17:05:53,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984218404] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:05:53,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010166400] [2021-12-14 17:05:53,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 17:05:53,087 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:05:53,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:05:53,088 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:05:53,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-14 17:05:53,691 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-14 17:05:53,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 17:05:53,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 2569 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-14 17:05:53,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:05:54,010 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-12-14 17:05:54,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:05:54,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010166400] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:05:54,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:05:54,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [18] total 23 [2021-12-14 17:05:54,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689536612] [2021-12-14 17:05:54,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:05:54,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:05:54,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:05:54,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:05:54,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2021-12-14 17:05:54,016 INFO L87 Difference]: Start difference. First operand 375 states and 499 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-14 17:05:54,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:05:54,178 INFO L93 Difference]: Finished difference Result 670 states and 907 transitions. [2021-12-14 17:05:54,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:05:54,178 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 159 [2021-12-14 17:05:54,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:05:54,181 INFO L225 Difference]: With dead ends: 670 [2021-12-14 17:05:54,181 INFO L226 Difference]: Without dead ends: 384 [2021-12-14 17:05:54,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2021-12-14 17:05:54,185 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 2 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2092 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:05:54,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2092 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:05:54,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-12-14 17:05:54,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 378. [2021-12-14 17:05:54,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 250 states have (on average 1.224) internal successors, (306), 253 states have internal predecessors, (306), 91 states have call successors, (91), 33 states have call predecessors, (91), 36 states have return successors, (104), 91 states have call predecessors, (104), 90 states have call successors, (104) [2021-12-14 17:05:54,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 501 transitions. [2021-12-14 17:05:54,206 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 501 transitions. Word has length 159 [2021-12-14 17:05:54,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:05:54,208 INFO L470 AbstractCegarLoop]: Abstraction has 378 states and 501 transitions. [2021-12-14 17:05:54,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-14 17:05:54,208 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 501 transitions. [2021-12-14 17:05:54,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-12-14 17:05:54,210 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:54,210 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:54,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-14 17:05:54,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-14 17:05:54,435 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:54,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:54,436 INFO L85 PathProgramCache]: Analyzing trace with hash -146496733, now seen corresponding path program 1 times [2021-12-14 17:05:54,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:05:54,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548617101] [2021-12-14 17:05:54,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:54,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:05:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:54,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:54,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:05:54,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:54,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:05:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:54,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:05:54,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:54,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 17:05:54,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:54,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:54,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:54,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:54,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:54,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:05:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:54,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:05:54,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:54,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 17:05:54,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:54,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:54,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:05:54,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:55,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:05:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:55,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:55,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:55,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 17:05:55,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:55,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 17:05:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:55,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:05:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:55,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:55,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:55,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-14 17:05:55,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:55,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-14 17:05:55,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:55,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-14 17:05:55,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:55,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:05:55,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:55,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:05:55,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:55,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:05:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:55,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:05:55,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:55,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:05:55,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:55,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-14 17:05:55,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:55,289 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-12-14 17:05:55,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:05:55,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548617101] [2021-12-14 17:05:55,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548617101] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:05:55,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740877205] [2021-12-14 17:05:55,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:55,290 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:05:55,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:05:55,291 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:05:55,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-14 17:05:55,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:55,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 2623 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-14 17:05:55,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:05:56,110 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-12-14 17:05:56,111 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:05:56,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740877205] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:05:56,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:05:56,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [18] total 22 [2021-12-14 17:05:56,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594278364] [2021-12-14 17:05:56,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:05:56,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:05:56,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:05:56,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:05:56,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2021-12-14 17:05:56,113 INFO L87 Difference]: Start difference. First operand 378 states and 501 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-14 17:05:56,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:05:56,289 INFO L93 Difference]: Finished difference Result 706 states and 944 transitions. [2021-12-14 17:05:56,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 17:05:56,289 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 170 [2021-12-14 17:05:56,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:05:56,292 INFO L225 Difference]: With dead ends: 706 [2021-12-14 17:05:56,292 INFO L226 Difference]: Without dead ends: 378 [2021-12-14 17:05:56,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2021-12-14 17:05:56,293 INFO L933 BasicCegarLoop]: 356 mSDtfsCounter, 2 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:05:56,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1727 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:05:56,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-12-14 17:05:56,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 373. [2021-12-14 17:05:56,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 246 states have (on average 1.2195121951219512) internal successors, (300), 249 states have internal predecessors, (300), 91 states have call successors, (91), 33 states have call predecessors, (91), 35 states have return successors, (103), 90 states have call predecessors, (103), 90 states have call successors, (103) [2021-12-14 17:05:56,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 494 transitions. [2021-12-14 17:05:56,312 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 494 transitions. Word has length 170 [2021-12-14 17:05:56,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:05:56,312 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 494 transitions. [2021-12-14 17:05:56,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-14 17:05:56,313 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 494 transitions. [2021-12-14 17:05:56,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-14 17:05:56,314 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:05:56,315 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:05:56,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-14 17:05:56,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-14 17:05:56,542 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:05:56,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:05:56,542 INFO L85 PathProgramCache]: Analyzing trace with hash 2001250165, now seen corresponding path program 1 times [2021-12-14 17:05:56,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:05:56,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945929601] [2021-12-14 17:05:56,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:56,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:05:56,601 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 17:05:56,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [124550526] [2021-12-14 17:05:56,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:05:56,602 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:05:56,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:05:56,603 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:05:56,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-14 17:05:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:05:57,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 2728 conjuncts, 43 conjunts are in the unsatisfiable core [2021-12-14 17:05:57,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:05:57,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:05:57,417 INFO L388 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 16 treesize of output 17 [2021-12-14 17:05:58,802 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3155 Int) (v_ArrVal_3153 Int) (v_ArrVal_3151 Int) (v_ArrVal_3152 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_s_get_next_element_#in~iter.base| (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_s_get_next_element_#in~iter.base|) (+ |c_s_get_next_element_#in~iter.offset| 8) v_ArrVal_3153) (+ |c_s_get_next_element_#in~iter.offset| 16) v_ArrVal_3151) (+ |c_s_get_next_element_#in~iter.offset| 24) v_ArrVal_3152) (+ 40 |c_s_get_next_element_#in~iter.offset|) v_ArrVal_3155)))) is different from true [2021-12-14 17:05:58,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:05:58,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:05:58,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:05:58,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:05:58,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:05:58,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:05:58,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:05:58,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:05:58,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:05:58,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:05:58,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2021-12-14 17:05:58,919 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-12-14 17:05:58,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:05:58,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:05:58,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945929601] [2021-12-14 17:05:58,920 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 17:05:58,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124550526] [2021-12-14 17:05:58,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124550526] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:05:58,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:05:58,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-14 17:05:58,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918647552] [2021-12-14 17:05:58,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:05:58,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-14 17:05:58,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:05:58,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-14 17:05:58,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=150, Unknown=1, NotChecked=24, Total=210 [2021-12-14 17:05:58,921 INFO L87 Difference]: Start difference. First operand 373 states and 494 transitions. Second operand has 15 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 8 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2021-12-14 17:06:12,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:06:12,441 INFO L93 Difference]: Finished difference Result 675 states and 897 transitions. [2021-12-14 17:06:12,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-14 17:06:12,441 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 8 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) Word has length 176 [2021-12-14 17:06:12,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:06:12,444 INFO L225 Difference]: With dead ends: 675 [2021-12-14 17:06:12,444 INFO L226 Difference]: Without dead ends: 429 [2021-12-14 17:06:12,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=101, Invalid=493, Unknown=10, NotChecked=46, Total=650 [2021-12-14 17:06:12,445 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 274 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 1861 SdHoareTripleChecker+Invalid, 2250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1083 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-14 17:06:12,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 1861 Invalid, 2250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 996 Invalid, 0 Unknown, 1083 Unchecked, 0.9s Time] [2021-12-14 17:06:12,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-12-14 17:06:12,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 401. [2021-12-14 17:06:12,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 265 states have (on average 1.211320754716981) internal successors, (321), 269 states have internal predecessors, (321), 94 states have call successors, (94), 38 states have call predecessors, (94), 41 states have return successors, (107), 93 states have call predecessors, (107), 93 states have call successors, (107) [2021-12-14 17:06:12,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 522 transitions. [2021-12-14 17:06:12,465 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 522 transitions. Word has length 176 [2021-12-14 17:06:12,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:06:12,465 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 522 transitions. [2021-12-14 17:06:12,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 8 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2021-12-14 17:06:12,466 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 522 transitions. [2021-12-14 17:06:12,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-12-14 17:06:12,467 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:06:12,468 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:06:12,491 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-14 17:06:12,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-14 17:06:12,679 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:06:12,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:06:12,680 INFO L85 PathProgramCache]: Analyzing trace with hash -897728049, now seen corresponding path program 1 times [2021-12-14 17:06:12,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:06:12,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849031689] [2021-12-14 17:06:12,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:06:12,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:06:12,738 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 17:06:12,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1646900267] [2021-12-14 17:06:12,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:06:12,739 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:06:12,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:06:12,744 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:06:12,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-14 17:06:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:13,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 2744 conjuncts, 91 conjunts are in the unsatisfiable core [2021-12-14 17:06:13,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:06:13,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:06:13,574 INFO L388 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 16 treesize of output 17 [2021-12-14 17:06:13,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:06:13,580 INFO L388 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 16 treesize of output 17 [2021-12-14 17:06:14,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:06:14,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:06:14,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:06:14,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:06:14,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:06:14,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:06:14,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:06:14,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:06:14,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:06:14,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:06:14,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:06:14,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:06:14,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:06:14,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:06:14,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 17:06:14,390 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-14 17:06:14,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 78 [2021-12-14 17:06:14,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:06:14,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:06:14,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:06:14,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:06:14,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:06:14,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:06:14,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:06:14,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:06:14,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:06:14,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:06:14,419 INFO L354 Elim1Store]: treesize reduction 252, result has 4.2 percent of original size [2021-12-14 17:06:14,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 78 [2021-12-14 17:06:15,189 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 109 proven. 3 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-14 17:06:15,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:06:15,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:06:15,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849031689] [2021-12-14 17:06:15,940 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 17:06:15,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646900267] [2021-12-14 17:06:15,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646900267] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:06:15,940 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:06:15,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2021-12-14 17:06:15,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126606730] [2021-12-14 17:06:15,941 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-14 17:06:15,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-14 17:06:15,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:06:15,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-14 17:06:15,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=939, Unknown=0, NotChecked=0, Total=1056 [2021-12-14 17:06:15,943 INFO L87 Difference]: Start difference. First operand 401 states and 522 transitions. Second operand has 24 states, 21 states have (on average 4.428571428571429) internal successors, (93), 23 states have internal predecessors, (93), 12 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2021-12-14 17:06:16,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:06:16,831 INFO L93 Difference]: Finished difference Result 668 states and 891 transitions. [2021-12-14 17:06:16,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-14 17:06:16,832 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 4.428571428571429) internal successors, (93), 23 states have internal predecessors, (93), 12 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) Word has length 181 [2021-12-14 17:06:16,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:06:16,834 INFO L225 Difference]: With dead ends: 668 [2021-12-14 17:06:16,835 INFO L226 Difference]: Without dead ends: 423 [2021-12-14 17:06:16,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 167 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=165, Invalid=1395, Unknown=0, NotChecked=0, Total=1560 [2021-12-14 17:06:16,837 INFO L933 BasicCegarLoop]: 380 mSDtfsCounter, 495 mSDsluCounter, 2730 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 3110 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 333 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 17:06:16,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [497 Valid, 3110 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 391 Invalid, 0 Unknown, 333 Unchecked, 0.7s Time] [2021-12-14 17:06:16,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2021-12-14 17:06:16,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 416. [2021-12-14 17:06:16,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 276 states have (on average 1.2065217391304348) internal successors, (333), 280 states have internal predecessors, (333), 95 states have call successors, (95), 40 states have call predecessors, (95), 44 states have return successors, (109), 95 states have call predecessors, (109), 94 states have call successors, (109) [2021-12-14 17:06:16,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 537 transitions. [2021-12-14 17:06:16,855 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 537 transitions. Word has length 181 [2021-12-14 17:06:16,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:06:16,856 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 537 transitions. [2021-12-14 17:06:16,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 4.428571428571429) internal successors, (93), 23 states have internal predecessors, (93), 12 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2021-12-14 17:06:16,856 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 537 transitions. [2021-12-14 17:06:16,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-12-14 17:06:16,858 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:06:16,858 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:06:16,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-14 17:06:17,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-14 17:06:17,071 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:06:17,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:06:17,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1484534063, now seen corresponding path program 1 times [2021-12-14 17:06:17,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:06:17,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191470841] [2021-12-14 17:06:17,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:06:17,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:06:17,114 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 17:06:17,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1461516348] [2021-12-14 17:06:17,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:06:17,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:06:17,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:06:17,116 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:06:17,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-14 17:06:17,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:06:17,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 2739 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-14 17:06:17,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:06:18,700 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((aws_hash_iter_is_valid_~iter.offset Int) (aws_hash_iter_is_valid_~iter.base Int)) (not (= (select (select |c_#memory_$Pointer$.offset| aws_hash_iter_is_valid_~iter.base) aws_hash_iter_is_valid_~iter.offset) 0))) (exists ((aws_hash_iter_is_valid_~iter.offset Int) (aws_hash_iter_is_valid_~iter.base Int)) (not (= (select (select |c_#memory_$Pointer$.base| aws_hash_iter_is_valid_~iter.base) aws_hash_iter_is_valid_~iter.offset) 0)))) is different from true