./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 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_find_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 b2aa49e297f60cfce052f243c4868c3f21a4b7a15679d0734b9f9fae5c35ea17 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-16 21:10:07,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-16 21:10:07,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-16 21:10:07,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-16 21:10:07,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-16 21:10:07,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-16 21:10:07,138 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-16 21:10:07,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-16 21:10:07,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-16 21:10:07,153 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-16 21:10:07,154 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-16 21:10:07,156 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-16 21:10:07,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-16 21:10:07,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-16 21:10:07,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-16 21:10:07,165 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-16 21:10:07,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-16 21:10:07,168 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-16 21:10:07,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-16 21:10:07,174 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-16 21:10:07,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-16 21:10:07,179 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-16 21:10:07,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-16 21:10:07,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-16 21:10:07,186 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-16 21:10:07,186 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-16 21:10:07,187 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-16 21:10:07,188 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-16 21:10:07,189 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-16 21:10:07,190 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-16 21:10:07,191 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-16 21:10:07,192 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-16 21:10:07,193 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-16 21:10:07,194 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-16 21:10:07,196 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-16 21:10:07,196 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-16 21:10:07,197 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-16 21:10:07,197 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-16 21:10:07,197 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-16 21:10:07,198 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-16 21:10:07,198 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-16 21:10:07,199 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-16 21:10:07,236 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-16 21:10:07,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-16 21:10:07,239 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-16 21:10:07,239 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-16 21:10:07,240 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-16 21:10:07,240 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-16 21:10:07,241 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-16 21:10:07,241 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-16 21:10:07,242 INFO L138 SettingsManager]: * Use SBE=true [2021-11-16 21:10:07,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-16 21:10:07,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-16 21:10:07,243 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-16 21:10:07,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-16 21:10:07,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-16 21:10:07,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-16 21:10:07,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-16 21:10:07,244 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-16 21:10:07,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-16 21:10:07,244 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-16 21:10:07,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-16 21:10:07,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-16 21:10:07,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-16 21:10:07,245 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-16 21:10:07,245 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-16 21:10:07,246 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-16 21:10:07,246 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-16 21:10:07,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-16 21:10:07,247 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-16 21:10:07,248 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-16 21:10:07,248 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-16 21:10:07,248 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-16 21:10:07,248 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2aa49e297f60cfce052f243c4868c3f21a4b7a15679d0734b9f9fae5c35ea17 [2021-11-16 21:10:07,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-16 21:10:07,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-16 21:10:07,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-16 21:10:07,600 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-16 21:10:07,601 INFO L275 PluginConnector]: CDTParser initialized [2021-11-16 21:10:07,602 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i [2021-11-16 21:10:07,680 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/933bac5a1/561939c7d7e149c0becf4580329e9c3b/FLAG2233f49ae [2021-11-16 21:10:08,486 INFO L306 CDTParser]: Found 1 translation units. [2021-11-16 21:10:08,487 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_find_harness.i [2021-11-16 21:10:08,531 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/933bac5a1/561939c7d7e149c0becf4580329e9c3b/FLAG2233f49ae [2021-11-16 21:10:09,046 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/933bac5a1/561939c7d7e149c0becf4580329e9c3b [2021-11-16 21:10:09,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-16 21:10:09,049 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-16 21:10:09,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-16 21:10:09,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-16 21:10:09,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-16 21:10:09,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:10:09" (1/1) ... [2021-11-16 21:10:09,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44d5ba50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:10:09, skipping insertion in model container [2021-11-16 21:10:09,057 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:10:09" (1/1) ... [2021-11-16 21:10:09,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-16 21:10:09,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-16 21:10:09,454 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_find_harness.i[4493,4506] [2021-11-16 21:10:09,461 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_find_harness.i[4553,4566] [2021-11-16 21:10:09,487 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-16 21:10:09,495 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-16 21:10:10,311 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:10,312 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:10,312 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:10,313 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:10,314 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:10,324 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:10,328 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:10,329 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:10,332 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:10,334 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:10,336 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:10,338 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:10,340 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:10,851 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-16 21:10:10,853 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-16 21:10:10,854 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-16 21:10:10,856 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-16 21:10:10,857 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-16 21:10:10,859 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-16 21:10:10,859 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-16 21:10:10,860 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-16 21:10:10,861 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-16 21:10:10,872 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-16 21:10:11,137 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-16 21:10:11,447 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:11,449 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:11,489 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:11,491 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:11,498 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:11,499 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:11,521 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:11,522 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:11,523 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:11,523 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:11,523 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:11,524 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:11,524 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:11,574 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-16 21:10:11,647 INFO L203 MainTranslator]: Completed pre-run [2021-11-16 21:10:11,674 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_find_harness.i[4493,4506] [2021-11-16 21:10:11,675 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_find_harness.i[4553,4566] [2021-11-16 21:10:11,677 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-16 21:10:11,678 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-16 21:10:11,714 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:11,714 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:11,715 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:11,716 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:11,716 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:11,725 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:11,726 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:11,727 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:11,727 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:11,728 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:11,729 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:11,729 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:11,730 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:11,757 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-16 21:10:11,758 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-16 21:10:11,758 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-16 21:10:11,759 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-16 21:10:11,760 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-16 21:10:11,760 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-16 21:10:11,761 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-16 21:10:11,761 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-16 21:10:11,762 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-16 21:10:11,762 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-16 21:10:11,791 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-16 21:10:11,876 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:11,877 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:11,906 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:11,906 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:11,909 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:11,909 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:11,921 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:11,923 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:11,924 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:11,924 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:11,924 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:11,925 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:11,925 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 21:10:11,941 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-16 21:10:12,140 INFO L208 MainTranslator]: Completed translation [2021-11-16 21:10:12,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:10:12 WrapperNode [2021-11-16 21:10:12,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-16 21:10:12,141 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-16 21:10:12,142 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-16 21:10:12,142 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-16 21:10:12,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:10:12" (1/1) ... [2021-11-16 21:10:12,267 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:10:12" (1/1) ... [2021-11-16 21:10:12,372 INFO L137 Inliner]: procedures = 776, calls = 2457, calls flagged for inlining = 69, calls inlined = 20, statements flattened = 835 [2021-11-16 21:10:12,373 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-16 21:10:12,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-16 21:10:12,374 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-16 21:10:12,374 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-16 21:10:12,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:10:12" (1/1) ... [2021-11-16 21:10:12,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:10:12" (1/1) ... [2021-11-16 21:10:12,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:10:12" (1/1) ... [2021-11-16 21:10:12,417 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:10:12" (1/1) ... [2021-11-16 21:10:12,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:10:12" (1/1) ... [2021-11-16 21:10:12,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:10:12" (1/1) ... [2021-11-16 21:10:12,516 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:10:12" (1/1) ... [2021-11-16 21:10:12,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-16 21:10:12,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-16 21:10:12,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-16 21:10:12,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-16 21:10:12,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:10:12" (1/1) ... [2021-11-16 21:10:12,551 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-16 21:10:12,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:10:12,577 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-16 21:10:12,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-16 21:10:12,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-16 21:10:12,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-16 21:10:12,622 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-16 21:10:12,622 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-16 21:10:12,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-16 21:10:12,622 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-16 21:10:12,623 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-11-16 21:10:12,623 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-11-16 21:10:12,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-16 21:10:12,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-16 21:10:12,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-16 21:10:12,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-16 21:10:12,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-16 21:10:12,624 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-16 21:10:12,624 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-16 21:10:12,624 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-16 21:10:12,624 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-16 21:10:12,625 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-16 21:10:12,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-16 21:10:12,625 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-16 21:10:12,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-16 21:10:12,625 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-16 21:10:12,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-16 21:10:12,626 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-16 21:10:12,626 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-16 21:10:12,626 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_find [2021-11-16 21:10:12,626 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_find [2021-11-16 21:10:12,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-16 21:10:12,626 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2021-11-16 21:10:12,627 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2021-11-16 21:10:12,627 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-11-16 21:10:12,627 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-11-16 21:10:12,627 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2021-11-16 21:10:12,628 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2021-11-16 21:10:12,628 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2021-11-16 21:10:12,628 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2021-11-16 21:10:12,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-16 21:10:12,629 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-11-16 21:10:12,629 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-11-16 21:10:12,631 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2021-11-16 21:10:12,632 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2021-11-16 21:10:12,632 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2021-11-16 21:10:12,632 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2021-11-16 21:10:12,633 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2021-11-16 21:10:12,633 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2021-11-16 21:10:12,633 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-16 21:10:12,633 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-16 21:10:12,634 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-11-16 21:10:12,639 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-11-16 21:10:12,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-16 21:10:12,639 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-16 21:10:12,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-16 21:10:12,640 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-16 21:10:12,640 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-16 21:10:12,640 INFO L130 BoogieDeclarations]: Found specification of procedure uninterpreted_equals [2021-11-16 21:10:12,640 INFO L138 BoogieDeclarations]: Found implementation of procedure uninterpreted_equals [2021-11-16 21:10:12,640 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-16 21:10:12,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-16 21:10:12,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-16 21:10:12,957 INFO L236 CfgBuilder]: Building ICFG [2021-11-16 21:10:12,959 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-16 21:10:13,113 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2021-11-16 21:10:13,163 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2021-11-16 21:10:13,398 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !true; [2021-11-16 21:10:14,643 INFO L277 CfgBuilder]: Performing block encoding [2021-11-16 21:10:14,651 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-16 21:10:14,651 INFO L301 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-16 21:10:14,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 09:10:14 BoogieIcfgContainer [2021-11-16 21:10:14,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-16 21:10:14,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-16 21:10:14,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-16 21:10:14,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-16 21:10:14,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 09:10:09" (1/3) ... [2021-11-16 21:10:14,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47018cd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:10:14, skipping insertion in model container [2021-11-16 21:10:14,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:10:12" (2/3) ... [2021-11-16 21:10:14,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47018cd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:10:14, skipping insertion in model container [2021-11-16 21:10:14,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 09:10:14" (3/3) ... [2021-11-16 21:10:14,662 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_find_harness.i [2021-11-16 21:10:14,667 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-16 21:10:14,667 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-16 21:10:14,725 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-16 21:10:14,742 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-16 21:10:14,743 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-16 21:10:14,769 INFO L276 IsEmpty]: Start isEmpty. Operand has 246 states, 157 states have (on average 1.2101910828025477) internal successors, (190), 155 states have internal predecessors, (190), 68 states have call successors, (68), 22 states have call predecessors, (68), 22 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2021-11-16 21:10:14,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-16 21:10:14,780 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:10:14,781 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:10:14,782 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:10:14,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:10:14,787 INFO L85 PathProgramCache]: Analyzing trace with hash 2109277801, now seen corresponding path program 1 times [2021-11-16 21:10:14,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:10:14,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121054141] [2021-11-16 21:10:14,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:10:14,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:10:15,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:15,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:10:15,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:15,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-16 21:10:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:15,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 21:10:15,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:15,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-16 21:10:15,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:15,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 21:10:15,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:10:15,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121054141] [2021-11-16 21:10:15,432 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-16 21:10:15,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822661591] [2021-11-16 21:10:15,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:10:15,433 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:10:15,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:10:15,435 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:10:15,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-16 21:10:15,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:15,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 2495 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-16 21:10:16,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:10:16,405 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2021-11-16 21:10:16,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:10:16,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822661591] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:10:16,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:10:16,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-16 21:10:16,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946804063] [2021-11-16 21:10:16,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:10:16,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-16 21:10:16,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:10:16,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-16 21:10:16,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-16 21:10:16,448 INFO L87 Difference]: Start difference. First operand has 246 states, 157 states have (on average 1.2101910828025477) internal successors, (190), 155 states have internal predecessors, (190), 68 states have call successors, (68), 22 states have call predecessors, (68), 22 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-16 21:10:16,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:10:16,524 INFO L93 Difference]: Finished difference Result 486 states and 686 transitions. [2021-11-16 21:10:16,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-16 21:10:16,526 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 182 [2021-11-16 21:10:16,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:10:16,535 INFO L225 Difference]: With dead ends: 486 [2021-11-16 21:10:16,535 INFO L226 Difference]: Without dead ends: 239 [2021-11-16 21:10:16,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-16 21:10:16,546 INFO L933 BasicCegarLoop]: 318 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, 318 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 [2021-11-16 21:10:16,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-16 21:10:16,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-11-16 21:10:16,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2021-11-16 21:10:16,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 148 states have (on average 1.195945945945946) internal successors, (177), 149 states have internal predecessors, (177), 68 states have call successors, (68), 22 states have call predecessors, (68), 22 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2021-11-16 21:10:16,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 312 transitions. [2021-11-16 21:10:16,628 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 312 transitions. Word has length 182 [2021-11-16 21:10:16,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:10:16,630 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 312 transitions. [2021-11-16 21:10:16,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-16 21:10:16,631 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 312 transitions. [2021-11-16 21:10:16,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-16 21:10:16,641 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:10:16,641 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:10:16,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-16 21:10:16,856 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 [2021-11-16 21:10:16,857 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:10:16,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:10:16,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1716640621, now seen corresponding path program 1 times [2021-11-16 21:10:16,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:10:16,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543454536] [2021-11-16 21:10:16,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:10:16,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:10:16,933 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 21:10:16,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1324226923] [2021-11-16 21:10:16,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:10:16,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:10:16,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:10:16,936 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:10:16,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-16 21:10:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:17,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 2495 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-16 21:10:17,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:10:17,954 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2021-11-16 21:10:17,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:10:17,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:10:17,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543454536] [2021-11-16 21:10:17,955 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 21:10:17,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324226923] [2021-11-16 21:10:17,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324226923] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:10:17,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:10:17,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-16 21:10:17,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529760645] [2021-11-16 21:10:17,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:10:17,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-16 21:10:17,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:10:17,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-16 21:10:17,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-16 21:10:17,958 INFO L87 Difference]: Start difference. First operand 239 states and 312 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-16 21:10:18,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:10:18,232 INFO L93 Difference]: Finished difference Result 464 states and 608 transitions. [2021-11-16 21:10:18,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-16 21:10:18,233 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 182 [2021-11-16 21:10:18,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:10:18,243 INFO L225 Difference]: With dead ends: 464 [2021-11-16 21:10:18,243 INFO L226 Difference]: Without dead ends: 246 [2021-11-16 21:10:18,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-16 21:10:18,250 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 325 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-16 21:10:18,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 1041 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-16 21:10:18,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-11-16 21:10:18,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2021-11-16 21:10:18,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 153 states have (on average 1.196078431372549) internal successors, (183), 155 states have internal predecessors, (183), 69 states have call successors, (69), 22 states have call predecessors, (69), 23 states have return successors, (70), 68 states have call predecessors, (70), 68 states have call successors, (70) [2021-11-16 21:10:18,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 322 transitions. [2021-11-16 21:10:18,286 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 322 transitions. Word has length 182 [2021-11-16 21:10:18,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:10:18,287 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 322 transitions. [2021-11-16 21:10:18,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-16 21:10:18,287 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 322 transitions. [2021-11-16 21:10:18,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-16 21:10:18,290 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:10:18,290 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:10:18,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-16 21:10:18,515 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 [2021-11-16 21:10:18,516 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:10:18,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:10:18,516 INFO L85 PathProgramCache]: Analyzing trace with hash 421077933, now seen corresponding path program 1 times [2021-11-16 21:10:18,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:10:18,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413517623] [2021-11-16 21:10:18,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:10:18,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:10:18,598 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 21:10:18,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [773112473] [2021-11-16 21:10:18,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:10:18,599 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:10:18,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:10:18,600 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:10:18,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-16 21:10:19,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:19,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 2505 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-16 21:10:19,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:10:19,570 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2021-11-16 21:10:19,571 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:10:19,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:10:19,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413517623] [2021-11-16 21:10:19,571 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 21:10:19,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773112473] [2021-11-16 21:10:19,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773112473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:10:19,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:10:19,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-16 21:10:19,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658193037] [2021-11-16 21:10:19,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:10:19,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-16 21:10:19,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:10:19,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-16 21:10:19,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-16 21:10:19,574 INFO L87 Difference]: Start difference. First operand 246 states and 322 transitions. Second operand has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 4 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2021-11-16 21:10:19,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:10:19,905 INFO L93 Difference]: Finished difference Result 404 states and 531 transitions. [2021-11-16 21:10:19,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-16 21:10:19,907 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), 4 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) Word has length 182 [2021-11-16 21:10:19,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:10:19,910 INFO L225 Difference]: With dead ends: 404 [2021-11-16 21:10:19,910 INFO L226 Difference]: Without dead ends: 239 [2021-11-16 21:10:19,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-16 21:10:19,912 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 321 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 1528 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-16 21:10:19,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 1528 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-16 21:10:19,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-11-16 21:10:19,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2021-11-16 21:10:19,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 148 states have (on average 1.1891891891891893) internal successors, (176), 149 states have internal predecessors, (176), 68 states have call successors, (68), 22 states have call predecessors, (68), 22 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2021-11-16 21:10:19,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 311 transitions. [2021-11-16 21:10:19,930 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 311 transitions. Word has length 182 [2021-11-16 21:10:19,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:10:19,931 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 311 transitions. [2021-11-16 21:10:19,932 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), 4 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2021-11-16 21:10:19,932 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 311 transitions. [2021-11-16 21:10:19,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-16 21:10:19,934 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:10:19,934 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:10:19,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-16 21:10:20,154 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 [2021-11-16 21:10:20,155 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:10:20,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:10:20,156 INFO L85 PathProgramCache]: Analyzing trace with hash -238453589, now seen corresponding path program 1 times [2021-11-16 21:10:20,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:10:20,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491492665] [2021-11-16 21:10:20,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:10:20,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:10:20,204 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 21:10:20,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1455403546] [2021-11-16 21:10:20,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:10:20,205 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:10:20,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:10:20,206 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:10:20,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-16 21:10:20,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:20,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 2510 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-16 21:10:20,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:10:21,045 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2021-11-16 21:10:21,046 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:10:21,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:10:21,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491492665] [2021-11-16 21:10:21,046 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 21:10:21,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455403546] [2021-11-16 21:10:21,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455403546] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:10:21,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:10:21,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-16 21:10:21,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142890500] [2021-11-16 21:10:21,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:10:21,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-16 21:10:21,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:10:21,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-16 21:10:21,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-16 21:10:21,049 INFO L87 Difference]: Start difference. First operand 239 states and 311 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-16 21:10:21,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:10:21,078 INFO L93 Difference]: Finished difference Result 474 states and 616 transitions. [2021-11-16 21:10:21,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 21:10:21,079 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 182 [2021-11-16 21:10:21,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:10:21,081 INFO L225 Difference]: With dead ends: 474 [2021-11-16 21:10:21,081 INFO L226 Difference]: Without dead ends: 244 [2021-11-16 21:10:21,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-16 21:10:21,083 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 2 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1228 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 [2021-11-16 21:10:21,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1228 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-16 21:10:21,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-11-16 21:10:21,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2021-11-16 21:10:21,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 152 states have (on average 1.1842105263157894) internal successors, (180), 153 states have internal predecessors, (180), 68 states have call successors, (68), 22 states have call predecessors, (68), 23 states have return successors, (68), 68 states have call predecessors, (68), 67 states have call successors, (68) [2021-11-16 21:10:21,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 316 transitions. [2021-11-16 21:10:21,096 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 316 transitions. Word has length 182 [2021-11-16 21:10:21,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:10:21,097 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 316 transitions. [2021-11-16 21:10:21,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-16 21:10:21,097 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 316 transitions. [2021-11-16 21:10:21,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-16 21:10:21,099 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:10:21,099 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:10:21,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-16 21:10:21,315 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 [2021-11-16 21:10:21,315 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:10:21,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:10:21,316 INFO L85 PathProgramCache]: Analyzing trace with hash -168770197, now seen corresponding path program 1 times [2021-11-16 21:10:21,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:10:21,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781618727] [2021-11-16 21:10:21,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:10:21,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:10:21,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:21,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:10:21,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:21,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-16 21:10:21,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:21,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 21:10:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:21,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-16 21:10:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:21,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 21:10:21,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:21,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:21,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:21,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:21,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:21,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:10:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:21,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-16 21:10:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:21,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-16 21:10:21,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:21,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:21,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-16 21:10:21,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:21,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-16 21:10:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:21,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-16 21:10:21,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:21,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-16 21:10:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:21,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-16 21:10:21,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:21,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-16 21:10:21,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:21,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-16 21:10:21,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:22,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:22,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:22,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:22,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:22,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:10:22,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:22,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-16 21:10:22,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:22,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-16 21:10:22,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:22,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-11-16 21:10:22,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:22,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-11-16 21:10:22,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:22,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-11-16 21:10:22,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:22,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-16 21:10:22,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:22,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-11-16 21:10:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:22,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-11-16 21:10:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:22,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-16 21:10:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:22,159 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 397 trivial. 0 not checked. [2021-11-16 21:10:22,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:10:22,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781618727] [2021-11-16 21:10:22,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781618727] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 21:10:22,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239873298] [2021-11-16 21:10:22,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:10:22,160 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:10:22,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:10:22,164 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:10:22,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-16 21:10:22,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:22,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 2542 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-16 21:10:22,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:10:22,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-16 21:10:23,441 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2021-11-16 21:10:23,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:10:23,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239873298] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:10:23,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-16 21:10:23,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 21 [2021-11-16 21:10:23,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688357455] [2021-11-16 21:10:23,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:10:23,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-16 21:10:23,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:10:23,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-16 21:10:23,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2021-11-16 21:10:23,443 INFO L87 Difference]: Start difference. First operand 244 states and 316 transitions. Second operand has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2021-11-16 21:10:23,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:10:23,564 INFO L93 Difference]: Finished difference Result 474 states and 611 transitions. [2021-11-16 21:10:23,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-16 21:10:23,564 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) Word has length 194 [2021-11-16 21:10:23,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:10:23,567 INFO L225 Difference]: With dead ends: 474 [2021-11-16 21:10:23,567 INFO L226 Difference]: Without dead ends: 248 [2021-11-16 21:10:23,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2021-11-16 21:10:23,570 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 35 mSDsluCounter, 1376 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1679 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 21:10:23,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 1679 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 75 Unchecked, 0.1s Time] [2021-11-16 21:10:23,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-11-16 21:10:23,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2021-11-16 21:10:23,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 156 states have (on average 1.1794871794871795) internal successors, (184), 156 states have internal predecessors, (184), 68 states have call successors, (68), 23 states have call predecessors, (68), 23 states have return successors, (68), 68 states have call predecessors, (68), 67 states have call successors, (68) [2021-11-16 21:10:23,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 320 transitions. [2021-11-16 21:10:23,595 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 320 transitions. Word has length 194 [2021-11-16 21:10:23,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:10:23,595 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 320 transitions. [2021-11-16 21:10:23,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2021-11-16 21:10:23,596 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 320 transitions. [2021-11-16 21:10:23,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-16 21:10:23,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:10:23,598 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:10:23,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-16 21:10:23,811 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 [2021-11-16 21:10:23,812 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:10:23,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:10:23,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1760895517, now seen corresponding path program 1 times [2021-11-16 21:10:23,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:10:23,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420380739] [2021-11-16 21:10:23,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:10:23,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:10:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:23,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:10:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:23,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-16 21:10:23,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:23,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 21:10:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:23,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-16 21:10:23,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:24,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 21:10:24,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:24,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:24,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:24,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:24,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:10:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:24,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-16 21:10:24,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:24,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-16 21:10:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:24,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:24,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-16 21:10:24,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:24,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-16 21:10:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:24,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-16 21:10:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:24,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-16 21:10:24,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:24,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-16 21:10:24,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:24,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-16 21:10:24,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:24,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-16 21:10:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:24,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-16 21:10:24,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:24,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:24,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:24,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:10:24,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:24,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-16 21:10:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:24,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-16 21:10:24,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:24,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-11-16 21:10:24,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:24,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-11-16 21:10:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:24,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-11-16 21:10:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:24,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-11-16 21:10:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:24,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-16 21:10:24,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:24,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-11-16 21:10:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:24,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-16 21:10:24,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:24,350 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-11-16 21:10:24,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:10:24,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420380739] [2021-11-16 21:10:24,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420380739] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 21:10:24,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494796842] [2021-11-16 21:10:24,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:10:24,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:10:24,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:10:24,356 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:10:24,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-16 21:10:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:24,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 2566 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-16 21:10:24,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:10:25,872 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 [2021-11-16 21:10:32,288 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2021-11-16 21:10:32,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:10:32,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494796842] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:10:32,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-16 21:10:32,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2021-11-16 21:10:32,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229384657] [2021-11-16 21:10:32,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:10:32,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-16 21:10:32,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:10:32,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-16 21:10:32,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=175, Unknown=3, NotChecked=26, Total=240 [2021-11-16 21:10:32,290 INFO L87 Difference]: Start difference. First operand 248 states and 320 transitions. Second operand has 8 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (31), 2 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-16 21:10:33,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:10:33,385 INFO L93 Difference]: Finished difference Result 476 states and 619 transitions. [2021-11-16 21:10:33,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-16 21:10:33,386 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (31), 2 states have call predecessors, (31), 3 states have call successors, (31) Word has length 200 [2021-11-16 21:10:33,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:10:33,388 INFO L225 Difference]: With dead ends: 476 [2021-11-16 21:10:33,388 INFO L226 Difference]: Without dead ends: 251 [2021-11-16 21:10:33,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=51, Invalid=222, Unknown=3, NotChecked=30, Total=306 [2021-11-16 21:10:33,390 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 5 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 429 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-16 21:10:33,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 1668 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 429 Unchecked, 1.0s Time] [2021-11-16 21:10:33,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-11-16 21:10:33,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 250. [2021-11-16 21:10:33,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 158 states have (on average 1.1772151898734178) internal successors, (186), 157 states have internal predecessors, (186), 68 states have call successors, (68), 24 states have call predecessors, (68), 23 states have return successors, (68), 68 states have call predecessors, (68), 67 states have call successors, (68) [2021-11-16 21:10:33,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 322 transitions. [2021-11-16 21:10:33,400 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 322 transitions. Word has length 200 [2021-11-16 21:10:33,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:10:33,401 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 322 transitions. [2021-11-16 21:10:33,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (31), 2 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-16 21:10:33,402 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 322 transitions. [2021-11-16 21:10:33,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-16 21:10:33,404 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:10:33,404 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:10:33,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-16 21:10:33,631 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 [2021-11-16 21:10:33,632 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:10:33,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:10:33,632 INFO L85 PathProgramCache]: Analyzing trace with hash -661330404, now seen corresponding path program 1 times [2021-11-16 21:10:33,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:10:33,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856099594] [2021-11-16 21:10:33,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:10:33,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:10:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:33,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:10:33,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:33,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-16 21:10:33,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:33,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 21:10:33,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:33,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-16 21:10:33,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:33,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 21:10:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:33,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:33,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:33,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:33,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:10:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:33,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-16 21:10:33,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:33,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-16 21:10:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:33,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:33,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:33,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-16 21:10:33,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:33,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-16 21:10:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:34,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:10:34,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:34,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-16 21:10:34,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:34,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-16 21:10:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:34,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-16 21:10:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:34,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-16 21:10:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:34,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-16 21:10:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:34,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-16 21:10:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:34,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:34,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:34,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:34,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:34,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:10:34,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:34,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-11-16 21:10:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:34,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-16 21:10:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:34,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-16 21:10:34,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:34,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-16 21:10:34,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:34,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-11-16 21:10:34,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:34,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-11-16 21:10:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:34,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-11-16 21:10:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:34,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-16 21:10:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:34,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-11-16 21:10:34,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:34,241 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2021-11-16 21:10:34,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:10:34,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856099594] [2021-11-16 21:10:34,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856099594] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:10:34,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:10:34,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-16 21:10:34,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018025944] [2021-11-16 21:10:34,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:10:34,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-16 21:10:34,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:10:34,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-16 21:10:34,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-16 21:10:34,244 INFO L87 Difference]: Start difference. First operand 250 states and 322 transitions. Second operand has 9 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (32), 5 states have call predecessors, (32), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-16 21:10:36,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:10:36,140 INFO L93 Difference]: Finished difference Result 408 states and 531 transitions. [2021-11-16 21:10:36,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-16 21:10:36,140 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (32), 5 states have call predecessors, (32), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) Word has length 205 [2021-11-16 21:10:36,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:10:36,143 INFO L225 Difference]: With dead ends: 408 [2021-11-16 21:10:36,143 INFO L226 Difference]: Without dead ends: 262 [2021-11-16 21:10:36,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-11-16 21:10:36,145 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 332 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 1189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-16 21:10:36,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 888 Invalid, 1189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-16 21:10:36,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-11-16 21:10:36,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 252. [2021-11-16 21:10:36,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 159 states have (on average 1.1761006289308176) internal successors, (187), 159 states have internal predecessors, (187), 68 states have call successors, (68), 24 states have call predecessors, (68), 24 states have return successors, (70), 68 states have call predecessors, (70), 67 states have call successors, (70) [2021-11-16 21:10:36,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 325 transitions. [2021-11-16 21:10:36,162 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 325 transitions. Word has length 205 [2021-11-16 21:10:36,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:10:36,163 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 325 transitions. [2021-11-16 21:10:36,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (32), 5 states have call predecessors, (32), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-16 21:10:36,164 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 325 transitions. [2021-11-16 21:10:36,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-16 21:10:36,166 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:10:36,167 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:10:36,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-16 21:10:36,167 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:10:36,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:10:36,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1796534111, now seen corresponding path program 1 times [2021-11-16 21:10:36,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:10:36,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636070348] [2021-11-16 21:10:36,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:10:36,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:10:36,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:36,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:10:36,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:36,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-16 21:10:36,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:36,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 21:10:36,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:36,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-16 21:10:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:36,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 21:10:36,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:36,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:36,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:36,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:36,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:36,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:10:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:36,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-16 21:10:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:36,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-16 21:10:36,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:36,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:36,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-16 21:10:36,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:36,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-16 21:10:36,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:36,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:10:36,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:36,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-16 21:10:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:36,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-16 21:10:36,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:36,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-16 21:10:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:36,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-16 21:10:36,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:36,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-16 21:10:36,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:36,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-16 21:10:36,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:36,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:36,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:36,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:36,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:36,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:10:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:36,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-11-16 21:10:36,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:36,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-16 21:10:36,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:36,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-16 21:10:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:36,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-16 21:10:36,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:36,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-11-16 21:10:36,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:36,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-11-16 21:10:36,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:36,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-11-16 21:10:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:36,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-16 21:10:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:36,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:10:36,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:36,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-11-16 21:10:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:36,951 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2021-11-16 21:10:36,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:10:36,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636070348] [2021-11-16 21:10:36,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636070348] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:10:36,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:10:36,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-16 21:10:36,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924506348] [2021-11-16 21:10:36,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:10:36,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-16 21:10:36,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:10:36,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-16 21:10:36,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-11-16 21:10:36,955 INFO L87 Difference]: Start difference. First operand 252 states and 325 transitions. Second operand has 16 states, 14 states have (on average 5.5) internal successors, (77), 12 states have internal predecessors, (77), 6 states have call successors, (33), 6 states have call predecessors, (33), 3 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) [2021-11-16 21:10:39,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:10:39,675 INFO L93 Difference]: Finished difference Result 424 states and 554 transitions. [2021-11-16 21:10:39,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-16 21:10:39,676 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 5.5) internal successors, (77), 12 states have internal predecessors, (77), 6 states have call successors, (33), 6 states have call predecessors, (33), 3 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) Word has length 210 [2021-11-16 21:10:39,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:10:39,678 INFO L225 Difference]: With dead ends: 424 [2021-11-16 21:10:39,678 INFO L226 Difference]: Without dead ends: 269 [2021-11-16 21:10:39,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=134, Invalid=622, Unknown=0, NotChecked=0, Total=756 [2021-11-16 21:10:39,680 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 372 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 2148 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 2464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 2148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-16 21:10:39,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 1580 Invalid, 2464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 2148 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-16 21:10:39,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-11-16 21:10:39,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 255. [2021-11-16 21:10:39,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 161 states have (on average 1.173913043478261) internal successors, (189), 162 states have internal predecessors, (189), 68 states have call successors, (68), 24 states have call predecessors, (68), 25 states have return successors, (73), 68 states have call predecessors, (73), 67 states have call successors, (73) [2021-11-16 21:10:39,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 330 transitions. [2021-11-16 21:10:39,700 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 330 transitions. Word has length 210 [2021-11-16 21:10:39,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:10:39,700 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 330 transitions. [2021-11-16 21:10:39,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 5.5) internal successors, (77), 12 states have internal predecessors, (77), 6 states have call successors, (33), 6 states have call predecessors, (33), 3 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) [2021-11-16 21:10:39,701 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 330 transitions. [2021-11-16 21:10:39,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-11-16 21:10:39,705 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:10:39,705 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:10:39,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-16 21:10:39,706 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:10:39,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:10:39,706 INFO L85 PathProgramCache]: Analyzing trace with hash -130056786, now seen corresponding path program 2 times [2021-11-16 21:10:39,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:10:39,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211425840] [2021-11-16 21:10:39,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:10:39,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:10:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:39,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:10:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:39,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-16 21:10:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:39,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 21:10:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:39,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-16 21:10:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:39,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 21:10:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:39,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:40,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:40,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:40,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:10:40,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:40,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-16 21:10:40,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:40,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-16 21:10:40,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:40,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:40,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-16 21:10:40,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:40,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-16 21:10:40,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:40,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:10:40,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:40,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-16 21:10:40,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:40,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-16 21:10:40,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:40,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-16 21:10:40,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:40,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-16 21:10:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:40,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-16 21:10:40,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:40,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-16 21:10:40,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:40,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:40,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:40,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:10:40,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:40,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-11-16 21:10:40,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:40,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-16 21:10:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:40,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-16 21:10:40,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:40,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-16 21:10:40,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:40,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-11-16 21:10:40,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:40,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-16 21:10:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:40,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:10:40,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:40,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-11-16 21:10:40,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:40,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-11-16 21:10:40,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:40,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-11-16 21:10:40,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:40,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:10:40,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:40,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-11-16 21:10:40,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:40,531 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2021-11-16 21:10:40,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:10:40,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211425840] [2021-11-16 21:10:40,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211425840] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 21:10:40,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081086935] [2021-11-16 21:10:40,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-16 21:10:40,532 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:10:40,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:10:40,533 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:10:40,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-16 21:10:40,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-16 21:10:40,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-16 21:10:40,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 1776 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-16 21:10:40,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:10:41,376 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2021-11-16 21:10:41,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:10:41,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081086935] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:10:41,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-16 21:10:41,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 18 [2021-11-16 21:10:41,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328116289] [2021-11-16 21:10:41,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:10:41,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-16 21:10:41,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:10:41,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-16 21:10:41,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-11-16 21:10:41,379 INFO L87 Difference]: Start difference. First operand 255 states and 330 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-16 21:10:41,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:10:41,427 INFO L93 Difference]: Finished difference Result 263 states and 337 transitions. [2021-11-16 21:10:41,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 21:10:41,428 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 221 [2021-11-16 21:10:41,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:10:41,437 INFO L225 Difference]: With dead ends: 263 [2021-11-16 21:10:41,437 INFO L226 Difference]: Without dead ends: 261 [2021-11-16 21:10:41,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2021-11-16 21:10:41,441 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 12 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-16 21:10:41,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 1217 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-16 21:10:41,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-11-16 21:10:41,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 259. [2021-11-16 21:10:41,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 164 states have (on average 1.170731707317073) internal successors, (192), 165 states have internal predecessors, (192), 68 states have call successors, (68), 25 states have call predecessors, (68), 26 states have return successors, (73), 68 states have call predecessors, (73), 67 states have call successors, (73) [2021-11-16 21:10:41,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 333 transitions. [2021-11-16 21:10:41,459 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 333 transitions. Word has length 221 [2021-11-16 21:10:41,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:10:41,460 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 333 transitions. [2021-11-16 21:10:41,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2021-11-16 21:10:41,461 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 333 transitions. [2021-11-16 21:10:41,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-16 21:10:41,464 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:10:41,464 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:10:41,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-16 21:10:41,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:10:41,678 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:10:41,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:10:41,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1053277728, now seen corresponding path program 1 times [2021-11-16 21:10:41,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:10:41,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576829407] [2021-11-16 21:10:41,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:10:41,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:10:41,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:41,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:10:41,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:41,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-16 21:10:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:41,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 21:10:41,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:41,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-16 21:10:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:41,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 21:10:41,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:41,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:41,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:41,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:10:41,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:41,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-16 21:10:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:41,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-16 21:10:41,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:41,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:41,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-16 21:10:41,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:42,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-16 21:10:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:42,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:10:42,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:42,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-16 21:10:42,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:42,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-16 21:10:42,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:42,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-16 21:10:42,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:42,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-16 21:10:42,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:42,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-16 21:10:42,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:42,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-16 21:10:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:42,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:42,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:42,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:42,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:42,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:10:42,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:42,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-11-16 21:10:42,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:42,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-16 21:10:42,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:42,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-16 21:10:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:42,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-16 21:10:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:42,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-11-16 21:10:42,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:42,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-16 21:10:42,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:42,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:10:42,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:42,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-11-16 21:10:42,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:42,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-11-16 21:10:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:42,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-11-16 21:10:42,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:42,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:10:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:42,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-11-16 21:10:42,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:42,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-11-16 21:10:42,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:42,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-11-16 21:10:42,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:42,488 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2021-11-16 21:10:42,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:10:42,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576829407] [2021-11-16 21:10:42,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576829407] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 21:10:42,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649421309] [2021-11-16 21:10:42,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:10:42,489 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:10:42,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:10:42,490 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:10:42,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-16 21:10:42,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:42,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 2711 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-16 21:10:42,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:10:43,519 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 32 proven. 9 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2021-11-16 21:10:43,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 21:10:44,046 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2021-11-16 21:10:44,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649421309] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-16 21:10:44,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-16 21:10:44,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15, 8] total 23 [2021-11-16 21:10:44,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814166458] [2021-11-16 21:10:44,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:10:44,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-16 21:10:44,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:10:44,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-16 21:10:44,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2021-11-16 21:10:44,065 INFO L87 Difference]: Start difference. First operand 259 states and 333 transitions. Second operand has 5 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2021-11-16 21:10:44,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:10:44,128 INFO L93 Difference]: Finished difference Result 267 states and 340 transitions. [2021-11-16 21:10:44,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-16 21:10:44,129 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 234 [2021-11-16 21:10:44,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:10:44,131 INFO L225 Difference]: With dead ends: 267 [2021-11-16 21:10:44,131 INFO L226 Difference]: Without dead ends: 265 [2021-11-16 21:10:44,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2021-11-16 21:10:44,132 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 6 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-16 21:10:44,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1224 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-16 21:10:44,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-11-16 21:10:44,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 263. [2021-11-16 21:10:44,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 167 states have (on average 1.1676646706586826) internal successors, (195), 168 states have internal predecessors, (195), 68 states have call successors, (68), 26 states have call predecessors, (68), 27 states have return successors, (73), 68 states have call predecessors, (73), 67 states have call successors, (73) [2021-11-16 21:10:44,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 336 transitions. [2021-11-16 21:10:44,147 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 336 transitions. Word has length 234 [2021-11-16 21:10:44,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:10:44,148 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 336 transitions. [2021-11-16 21:10:44,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2021-11-16 21:10:44,148 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 336 transitions. [2021-11-16 21:10:44,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-11-16 21:10:44,150 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:10:44,150 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:10:44,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-16 21:10:44,359 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,SelfDestructingSolverStorable9 [2021-11-16 21:10:44,359 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:10:44,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:10:44,360 INFO L85 PathProgramCache]: Analyzing trace with hash -2025730660, now seen corresponding path program 1 times [2021-11-16 21:10:44,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:10:44,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263719292] [2021-11-16 21:10:44,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:10:44,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:10:44,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:44,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:10:44,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:44,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-16 21:10:44,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:44,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 21:10:44,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:44,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-16 21:10:44,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:44,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 21:10:44,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:44,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:44,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:44,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:44,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:10:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:44,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-16 21:10:44,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:44,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-16 21:10:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:44,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:44,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:44,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-16 21:10:44,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:44,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-16 21:10:44,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:44,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:10:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:44,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-16 21:10:44,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:44,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-16 21:10:44,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:44,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-16 21:10:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:44,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-16 21:10:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:44,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-16 21:10:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:44,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-16 21:10:44,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:44,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:44,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:44,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:44,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:10:44,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:44,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-11-16 21:10:44,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:44,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-16 21:10:44,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:44,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-16 21:10:44,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:44,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-16 21:10:44,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:44,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-11-16 21:10:44,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:45,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-16 21:10:45,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:45,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:10:45,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:45,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-11-16 21:10:45,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:45,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-11-16 21:10:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:45,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-11-16 21:10:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:45,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:45,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:45,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:10:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:45,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-16 21:10:45,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:45,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-11-16 21:10:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:45,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-11-16 21:10:45,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:45,169 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 14 proven. 17 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2021-11-16 21:10:45,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:10:45,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263719292] [2021-11-16 21:10:45,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263719292] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 21:10:45,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656091344] [2021-11-16 21:10:45,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:10:45,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:10:45,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:10:45,172 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:10:45,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-16 21:10:45,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:45,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 2773 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-16 21:10:45,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:10:46,059 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2021-11-16 21:10:46,059 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:10:46,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656091344] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:10:46,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-16 21:10:46,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2021-11-16 21:10:46,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530023786] [2021-11-16 21:10:46,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:10:46,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-16 21:10:46,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:10:46,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-16 21:10:46,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-11-16 21:10:46,061 INFO L87 Difference]: Start difference. First operand 263 states and 336 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-16 21:10:46,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:10:46,087 INFO L93 Difference]: Finished difference Result 345 states and 437 transitions. [2021-11-16 21:10:46,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-16 21:10:46,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) Word has length 241 [2021-11-16 21:10:46,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:10:46,090 INFO L225 Difference]: With dead ends: 345 [2021-11-16 21:10:46,090 INFO L226 Difference]: Without dead ends: 272 [2021-11-16 21:10:46,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-11-16 21:10:46,091 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 3 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1242 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-16 21:10:46,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 1242 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-16 21:10:46,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-11-16 21:10:46,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 267. [2021-11-16 21:10:46,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 170 states have (on average 1.1647058823529413) internal successors, (198), 171 states have internal predecessors, (198), 68 states have call successors, (68), 26 states have call predecessors, (68), 28 states have return successors, (74), 69 states have call predecessors, (74), 67 states have call successors, (74) [2021-11-16 21:10:46,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 340 transitions. [2021-11-16 21:10:46,105 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 340 transitions. Word has length 241 [2021-11-16 21:10:46,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:10:46,106 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 340 transitions. [2021-11-16 21:10:46,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-16 21:10:46,106 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 340 transitions. [2021-11-16 21:10:46,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-11-16 21:10:46,108 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:10:46,108 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:10:46,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-16 21:10:46,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:10:46,323 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:10:46,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:10:46,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1682430622, now seen corresponding path program 1 times [2021-11-16 21:10:46,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:10:46,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555759539] [2021-11-16 21:10:46,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:10:46,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:10:46,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:46,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:10:46,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:46,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-16 21:10:46,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:46,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 21:10:46,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:46,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-16 21:10:46,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:46,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 21:10:46,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:46,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:46,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:46,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:46,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:10:46,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:46,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-16 21:10:46,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:46,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-16 21:10:46,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:46,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:46,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:46,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-16 21:10:46,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:46,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-16 21:10:46,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:46,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:10:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:46,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-16 21:10:46,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:46,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-16 21:10:46,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:46,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-16 21:10:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:46,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-16 21:10:46,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:46,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-16 21:10:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:46,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-16 21:10:46,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:46,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:46,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:46,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:46,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:46,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:10:46,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:46,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-11-16 21:10:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:46,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-16 21:10:46,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:46,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-16 21:10:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:46,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-16 21:10:46,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:46,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-11-16 21:10:46,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:47,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-16 21:10:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:47,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:10:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:47,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-11-16 21:10:47,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:47,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-11-16 21:10:47,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:47,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-11-16 21:10:47,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:47,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:47,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:47,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:10:47,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:47,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-16 21:10:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:47,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-11-16 21:10:47,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:47,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-11-16 21:10:47,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:47,125 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 14 proven. 17 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2021-11-16 21:10:47,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:10:47,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555759539] [2021-11-16 21:10:47,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555759539] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 21:10:47,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997825914] [2021-11-16 21:10:47,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:10:47,127 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:10:47,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:10:47,128 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:10:47,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-16 21:10:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:47,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 2772 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-16 21:10:47,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:10:48,147 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2021-11-16 21:10:48,147 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:10:48,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997825914] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:10:48,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-16 21:10:48,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16] total 21 [2021-11-16 21:10:48,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037467538] [2021-11-16 21:10:48,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:10:48,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-16 21:10:48,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:10:48,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-16 21:10:48,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2021-11-16 21:10:48,149 INFO L87 Difference]: Start difference. First operand 267 states and 340 transitions. Second operand has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-16 21:10:48,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:10:48,310 INFO L93 Difference]: Finished difference Result 443 states and 567 transitions. [2021-11-16 21:10:48,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-16 21:10:48,311 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 241 [2021-11-16 21:10:48,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:10:48,313 INFO L225 Difference]: With dead ends: 443 [2021-11-16 21:10:48,313 INFO L226 Difference]: Without dead ends: 267 [2021-11-16 21:10:48,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2021-11-16 21:10:48,315 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 2 mSDsluCounter, 1409 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 21:10:48,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1701 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-16 21:10:48,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-11-16 21:10:48,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2021-11-16 21:10:48,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 170 states have (on average 1.1647058823529413) internal successors, (198), 171 states have internal predecessors, (198), 68 states have call successors, (68), 26 states have call predecessors, (68), 28 states have return successors, (73), 69 states have call predecessors, (73), 67 states have call successors, (73) [2021-11-16 21:10:48,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 339 transitions. [2021-11-16 21:10:48,332 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 339 transitions. Word has length 241 [2021-11-16 21:10:48,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:10:48,334 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 339 transitions. [2021-11-16 21:10:48,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-16 21:10:48,334 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 339 transitions. [2021-11-16 21:10:48,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-11-16 21:10:48,336 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:10:48,336 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:10:48,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-16 21:10:48,559 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,SelfDestructingSolverStorable11 [2021-11-16 21:10:48,559 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:10:48,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:10:48,560 INFO L85 PathProgramCache]: Analyzing trace with hash 762116007, now seen corresponding path program 2 times [2021-11-16 21:10:48,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:10:48,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918470807] [2021-11-16 21:10:48,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:10:48,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:10:49,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:49,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:10:49,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:49,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-16 21:10:49,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:49,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 21:10:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:49,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-16 21:10:49,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:49,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 21:10:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:49,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:50,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:50,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:50,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:10:50,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:50,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-16 21:10:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:50,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-16 21:10:50,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:50,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:50,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-16 21:10:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:50,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-16 21:10:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:50,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:10:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:50,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-16 21:10:50,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:50,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-16 21:10:50,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:50,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-16 21:10:50,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:50,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-16 21:10:50,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:50,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-16 21:10:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:50,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-16 21:10:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:50,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:50,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:50,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:50,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:50,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:10:50,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:50,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-11-16 21:10:50,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:50,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-16 21:10:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:50,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-16 21:10:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:50,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:10:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:50,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-11-16 21:10:50,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:50,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-11-16 21:10:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:50,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-11-16 21:10:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:50,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-16 21:10:50,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:50,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:10:50,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:50,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-11-16 21:10:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:50,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-11-16 21:10:50,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:50,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-11-16 21:10:50,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:50,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:50,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:10:50,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:50,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-16 21:10:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:50,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-11-16 21:10:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:50,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-11-16 21:10:50,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:51,085 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2021-11-16 21:10:51,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:10:51,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918470807] [2021-11-16 21:10:51,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918470807] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:10:51,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:10:51,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-11-16 21:10:51,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134198570] [2021-11-16 21:10:51,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:10:51,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-16 21:10:51,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:10:51,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-16 21:10:51,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1078, Unknown=0, NotChecked=0, Total=1190 [2021-11-16 21:10:51,088 INFO L87 Difference]: Start difference. First operand 267 states and 339 transitions. Second operand has 35 states, 31 states have (on average 2.903225806451613) internal successors, (90), 29 states have internal predecessors, (90), 17 states have call successors, (37), 7 states have call predecessors, (37), 8 states have return successors, (35), 17 states have call predecessors, (35), 16 states have call successors, (35) [2021-11-16 21:10:58,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:10:58,100 INFO L93 Difference]: Finished difference Result 387 states and 496 transitions. [2021-11-16 21:10:58,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-16 21:10:58,101 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 31 states have (on average 2.903225806451613) internal successors, (90), 29 states have internal predecessors, (90), 17 states have call successors, (37), 7 states have call predecessors, (37), 8 states have return successors, (35), 17 states have call predecessors, (35), 16 states have call successors, (35) Word has length 252 [2021-11-16 21:10:58,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:10:58,103 INFO L225 Difference]: With dead ends: 387 [2021-11-16 21:10:58,103 INFO L226 Difference]: Without dead ends: 315 [2021-11-16 21:10:58,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 77 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=481, Invalid=3425, Unknown=0, NotChecked=0, Total=3906 [2021-11-16 21:10:58,106 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 587 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 6057 mSolverCounterSat, 618 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 6675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 618 IncrementalHoareTripleChecker+Valid, 6057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-16 21:10:58,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [618 Valid, 1426 Invalid, 6675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [618 Valid, 6057 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-11-16 21:10:58,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-11-16 21:10:58,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 310. [2021-11-16 21:10:58,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 195 states have (on average 1.158974358974359) internal successors, (226), 199 states have internal predecessors, (226), 81 states have call successors, (81), 27 states have call predecessors, (81), 33 states have return successors, (96), 83 states have call predecessors, (96), 80 states have call successors, (96) [2021-11-16 21:10:58,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 403 transitions. [2021-11-16 21:10:58,125 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 403 transitions. Word has length 252 [2021-11-16 21:10:58,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:10:58,126 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 403 transitions. [2021-11-16 21:10:58,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 31 states have (on average 2.903225806451613) internal successors, (90), 29 states have internal predecessors, (90), 17 states have call successors, (37), 7 states have call predecessors, (37), 8 states have return successors, (35), 17 states have call predecessors, (35), 16 states have call successors, (35) [2021-11-16 21:10:58,126 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 403 transitions. [2021-11-16 21:10:58,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2021-11-16 21:10:58,129 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:10:58,129 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:10:58,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-16 21:10:58,130 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:10:58,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:10:58,130 INFO L85 PathProgramCache]: Analyzing trace with hash -279181109, now seen corresponding path program 1 times [2021-11-16 21:10:58,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:10:58,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523464951] [2021-11-16 21:10:58,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:10:58,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:10:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:10:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-16 21:10:58,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 21:10:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-16 21:10:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 21:10:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:58,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:10:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-16 21:10:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-16 21:10:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-16 21:10:58,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-16 21:10:58,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:10:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-16 21:10:58,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-16 21:10:58,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-16 21:10:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-16 21:10:58,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-16 21:10:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-16 21:10:58,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:58,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:10:58,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-16 21:10:58,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-11-16 21:10:58,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-16 21:10:58,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-16 21:10:58,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:10:58,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-11-16 21:10:58,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-16 21:10:58,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-11-16 21:10:58,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-16 21:10:58,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:10:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-11-16 21:10:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-11-16 21:10:58,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-11-16 21:10:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:10:58,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:10:58,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-16 21:10:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2021-11-16 21:10:58,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-11-16 21:10:58,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:10:58,744 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2021-11-16 21:10:58,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:10:58,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523464951] [2021-11-16 21:10:58,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523464951] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:10:58,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:10:58,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-16 21:10:58,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059857292] [2021-11-16 21:10:58,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:10:58,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-16 21:10:58,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:10:58,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-16 21:10:58,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-16 21:10:58,747 INFO L87 Difference]: Start difference. First operand 310 states and 403 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (36), 6 states have call predecessors, (36), 3 states have return successors, (34), 3 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-16 21:11:00,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:11:00,474 INFO L93 Difference]: Finished difference Result 617 states and 802 transitions. [2021-11-16 21:11:00,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-16 21:11:00,475 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (36), 6 states have call predecessors, (36), 3 states have return successors, (34), 3 states have call predecessors, (34), 2 states have call successors, (34) Word has length 264 [2021-11-16 21:11:00,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:11:00,477 INFO L225 Difference]: With dead ends: 617 [2021-11-16 21:11:00,477 INFO L226 Difference]: Without dead ends: 316 [2021-11-16 21:11:00,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-11-16 21:11:00,478 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 252 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-16 21:11:00,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 856 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-16 21:11:00,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-11-16 21:11:00,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 312. [2021-11-16 21:11:00,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 197 states have (on average 1.1573604060913705) internal successors, (228), 200 states have internal predecessors, (228), 81 states have call successors, (81), 27 states have call predecessors, (81), 33 states have return successors, (96), 84 states have call predecessors, (96), 80 states have call successors, (96) [2021-11-16 21:11:00,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 405 transitions. [2021-11-16 21:11:00,495 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 405 transitions. Word has length 264 [2021-11-16 21:11:00,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:11:00,495 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 405 transitions. [2021-11-16 21:11:00,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (36), 6 states have call predecessors, (36), 3 states have return successors, (34), 3 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-16 21:11:00,496 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 405 transitions. [2021-11-16 21:11:00,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2021-11-16 21:11:00,498 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:11:00,498 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:11:00,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-16 21:11:00,498 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:11:00,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:11:00,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1321984938, now seen corresponding path program 1 times [2021-11-16 21:11:00,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:11:00,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795655653] [2021-11-16 21:11:00,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:11:00,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:11:00,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:00,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:11:00,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:00,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-16 21:11:00,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:00,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 21:11:00,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:00,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-16 21:11:00,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:00,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 21:11:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:00,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:11:00,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:00,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:11:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:00,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:11:00,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:00,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-16 21:11:00,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:00,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-16 21:11:00,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:00,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:11:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:00,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-16 21:11:00,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:00,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-16 21:11:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:00,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:11:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:00,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-16 21:11:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:00,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-16 21:11:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:00,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-16 21:11:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:00,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-16 21:11:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:00,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-16 21:11:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:00,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-16 21:11:00,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:00,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:11:00,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:00,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:11:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:00,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:11:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:00,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-16 21:11:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:00,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:11:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:00,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-11-16 21:11:00,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:00,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-16 21:11:00,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:00,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-16 21:11:00,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:00,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:11:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:00,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-11-16 21:11:00,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:00,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-16 21:11:00,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:00,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-11-16 21:11:01,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:01,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-16 21:11:01,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:01,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:11:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:01,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-11-16 21:11:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:01,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-11-16 21:11:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:01,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-11-16 21:11:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:01,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:11:01,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:01,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:11:01,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:01,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-16 21:11:01,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:01,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2021-11-16 21:11:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:01,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-11-16 21:11:01,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:01,151 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2021-11-16 21:11:01,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:11:01,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795655653] [2021-11-16 21:11:01,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795655653] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:11:01,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:11:01,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-16 21:11:01,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925566601] [2021-11-16 21:11:01,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:11:01,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-16 21:11:01,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:11:01,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-16 21:11:01,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-16 21:11:01,154 INFO L87 Difference]: Start difference. First operand 312 states and 405 transitions. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 6 states have internal predecessors, (92), 2 states have call successors, (36), 6 states have call predecessors, (36), 4 states have return successors, (36), 4 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-16 21:11:02,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:11:02,700 INFO L93 Difference]: Finished difference Result 614 states and 796 transitions. [2021-11-16 21:11:02,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-16 21:11:02,702 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 6 states have internal predecessors, (92), 2 states have call successors, (36), 6 states have call predecessors, (36), 4 states have return successors, (36), 4 states have call predecessors, (36), 2 states have call successors, (36) Word has length 264 [2021-11-16 21:11:02,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:11:02,704 INFO L225 Difference]: With dead ends: 614 [2021-11-16 21:11:02,704 INFO L226 Difference]: Without dead ends: 311 [2021-11-16 21:11:02,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-11-16 21:11:02,706 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 441 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-16 21:11:02,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 1131 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-16 21:11:02,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-11-16 21:11:02,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 309. [2021-11-16 21:11:02,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 195 states have (on average 1.1487179487179486) internal successors, (224), 198 states have internal predecessors, (224), 80 states have call successors, (80), 27 states have call predecessors, (80), 33 states have return successors, (94), 83 states have call predecessors, (94), 79 states have call successors, (94) [2021-11-16 21:11:02,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 398 transitions. [2021-11-16 21:11:02,721 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 398 transitions. Word has length 264 [2021-11-16 21:11:02,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:11:02,722 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 398 transitions. [2021-11-16 21:11:02,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 6 states have internal predecessors, (92), 2 states have call successors, (36), 6 states have call predecessors, (36), 4 states have return successors, (36), 4 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-16 21:11:02,722 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 398 transitions. [2021-11-16 21:11:02,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-11-16 21:11:02,724 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:11:02,724 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:11:02,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-16 21:11:02,724 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:11:02,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:11:02,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1538706583, now seen corresponding path program 1 times [2021-11-16 21:11:02,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:11:02,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603789954] [2021-11-16 21:11:02,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:11:02,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:11:02,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:02,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:11:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:02,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-16 21:11:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:02,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 21:11:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:02,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-16 21:11:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:02,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 21:11:02,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:02,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:11:02,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:02,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:11:02,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:02,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:11:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:02,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-16 21:11:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:02,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-16 21:11:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:02,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:11:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:02,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-16 21:11:02,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:02,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-16 21:11:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:02,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:11:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:03,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-16 21:11:03,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:03,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-16 21:11:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:03,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-16 21:11:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:03,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-16 21:11:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:03,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-16 21:11:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:03,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-16 21:11:03,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:03,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:11:03,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:03,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:11:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:03,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:11:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:03,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-11-16 21:11:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:03,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-16 21:11:03,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:03,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-16 21:11:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:03,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:11:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:03,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-11-16 21:11:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:03,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-11-16 21:11:03,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:03,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-11-16 21:11:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:03,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-16 21:11:03,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:03,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:11:03,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:03,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-11-16 21:11:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:03,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-11-16 21:11:03,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:03,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-11-16 21:11:03,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:03,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:11:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:03,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:11:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:03,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-16 21:11:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:03,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-11-16 21:11:03,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:03,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-11-16 21:11:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:03,270 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2021-11-16 21:11:03,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:11:03,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603789954] [2021-11-16 21:11:03,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603789954] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:11:03,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:11:03,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-16 21:11:03,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791874141] [2021-11-16 21:11:03,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:11:03,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-16 21:11:03,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:11:03,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-16 21:11:03,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-16 21:11:03,274 INFO L87 Difference]: Start difference. First operand 309 states and 398 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (34), 6 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-16 21:11:04,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:11:04,486 INFO L93 Difference]: Finished difference Result 390 states and 498 transitions. [2021-11-16 21:11:04,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-16 21:11:04,487 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (34), 6 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 252 [2021-11-16 21:11:04,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:11:04,489 INFO L225 Difference]: With dead ends: 390 [2021-11-16 21:11:04,489 INFO L226 Difference]: Without dead ends: 307 [2021-11-16 21:11:04,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-16 21:11:04,490 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 467 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-16 21:11:04,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [499 Valid, 699 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-16 21:11:04,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-11-16 21:11:04,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 305. [2021-11-16 21:11:04,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 192 states have (on average 1.140625) internal successors, (219), 194 states have internal predecessors, (219), 80 states have call successors, (80), 27 states have call predecessors, (80), 32 states have return successors, (92), 83 states have call predecessors, (92), 79 states have call successors, (92) [2021-11-16 21:11:04,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 391 transitions. [2021-11-16 21:11:04,521 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 391 transitions. Word has length 252 [2021-11-16 21:11:04,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:11:04,521 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 391 transitions. [2021-11-16 21:11:04,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (34), 6 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-16 21:11:04,522 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 391 transitions. [2021-11-16 21:11:04,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-11-16 21:11:04,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:11:04,524 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:11:04,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-16 21:11:04,524 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:11:04,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:11:04,525 INFO L85 PathProgramCache]: Analyzing trace with hash -699636353, now seen corresponding path program 1 times [2021-11-16 21:11:04,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:11:04,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951063244] [2021-11-16 21:11:04,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:11:04,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:11:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:04,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:11:04,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:04,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-16 21:11:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:04,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 21:11:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:04,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-16 21:11:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:04,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 21:11:04,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:04,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:11:04,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:04,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:11:04,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:04,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:11:04,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:04,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-16 21:11:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:04,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-16 21:11:04,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:04,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:11:04,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:04,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-16 21:11:04,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:04,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-16 21:11:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:04,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:11:04,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:04,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-16 21:11:04,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:04,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-16 21:11:04,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:04,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-16 21:11:04,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:04,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-16 21:11:04,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:04,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-16 21:11:04,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:04,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-16 21:11:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:04,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:11:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:04,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:11:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:04,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:11:04,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:04,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-11-16 21:11:04,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:04,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-16 21:11:04,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:04,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-16 21:11:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:04,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:11:04,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:04,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-11-16 21:11:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:04,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-11-16 21:11:04,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:04,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-11-16 21:11:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:04,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-16 21:11:04,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:04,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:11:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:04,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-11-16 21:11:04,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:04,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-11-16 21:11:04,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:04,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-11-16 21:11:04,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:04,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:11:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:04,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:11:04,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:04,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-16 21:11:04,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:04,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-11-16 21:11:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:05,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-11-16 21:11:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:05,042 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2021-11-16 21:11:05,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:11:05,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951063244] [2021-11-16 21:11:05,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951063244] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:11:05,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:11:05,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-16 21:11:05,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299717074] [2021-11-16 21:11:05,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:11:05,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-16 21:11:05,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:11:05,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-16 21:11:05,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-16 21:11:05,044 INFO L87 Difference]: Start difference. First operand 305 states and 391 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (34), 6 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-16 21:11:06,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:11:06,705 INFO L93 Difference]: Finished difference Result 386 states and 491 transitions. [2021-11-16 21:11:06,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-16 21:11:06,706 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (34), 6 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 258 [2021-11-16 21:11:06,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:11:06,708 INFO L225 Difference]: With dead ends: 386 [2021-11-16 21:11:06,709 INFO L226 Difference]: Without dead ends: 307 [2021-11-16 21:11:06,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-11-16 21:11:06,710 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 481 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 397 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 397 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-16 21:11:06,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [513 Valid, 850 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [397 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-16 21:11:06,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-11-16 21:11:06,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 305. [2021-11-16 21:11:06,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 192 states have (on average 1.1354166666666667) internal successors, (218), 194 states have internal predecessors, (218), 80 states have call successors, (80), 27 states have call predecessors, (80), 32 states have return successors, (92), 83 states have call predecessors, (92), 79 states have call successors, (92) [2021-11-16 21:11:06,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 390 transitions. [2021-11-16 21:11:06,733 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 390 transitions. Word has length 258 [2021-11-16 21:11:06,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:11:06,734 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 390 transitions. [2021-11-16 21:11:06,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (34), 6 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-16 21:11:06,735 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 390 transitions. [2021-11-16 21:11:06,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-11-16 21:11:06,737 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:11:06,737 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:11:06,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-16 21:11:06,738 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:11:06,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:11:06,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1906387201, now seen corresponding path program 1 times [2021-11-16 21:11:06,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:11:06,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520692742] [2021-11-16 21:11:06,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:11:06,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:11:06,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:06,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:11:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:06,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-16 21:11:06,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:06,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 21:11:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:06,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-16 21:11:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:06,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 21:11:06,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:06,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:11:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:07,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:11:07,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:07,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:11:07,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:07,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-16 21:11:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:07,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-16 21:11:07,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:07,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:11:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:07,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-16 21:11:07,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:07,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-16 21:11:07,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:07,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:11:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:07,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-16 21:11:07,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:07,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-16 21:11:07,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:07,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-16 21:11:07,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:07,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-16 21:11:07,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:07,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-16 21:11:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:07,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-16 21:11:07,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:07,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:11:07,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:07,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:11:07,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:07,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 21:11:07,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:07,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-11-16 21:11:07,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:07,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-16 21:11:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:07,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-16 21:11:07,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:07,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:11:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:07,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-11-16 21:11:07,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:07,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-11-16 21:11:07,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:07,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-11-16 21:11:07,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:07,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-16 21:11:07,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:07,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:11:07,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:07,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-11-16 21:11:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:07,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-11-16 21:11:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:07,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-11-16 21:11:07,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:07,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 21:11:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:07,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 21:11:07,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:07,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-16 21:11:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:07,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-11-16 21:11:07,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:07,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-11-16 21:11:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:07,336 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2021-11-16 21:11:07,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:11:07,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520692742] [2021-11-16 21:11:07,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520692742] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:11:07,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:11:07,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-16 21:11:07,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728901304] [2021-11-16 21:11:07,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:11:07,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-16 21:11:07,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:11:07,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-16 21:11:07,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-16 21:11:07,338 INFO L87 Difference]: Start difference. First operand 305 states and 390 transitions. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (34), 6 states have call predecessors, (34), 2 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-16 21:11:08,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:11:08,992 INFO L93 Difference]: Finished difference Result 398 states and 508 transitions. [2021-11-16 21:11:08,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-16 21:11:08,992 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (34), 6 states have call predecessors, (34), 2 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) Word has length 258 [2021-11-16 21:11:08,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:11:08,994 INFO L225 Difference]: With dead ends: 398 [2021-11-16 21:11:08,995 INFO L226 Difference]: Without dead ends: 325 [2021-11-16 21:11:08,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2021-11-16 21:11:08,996 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 454 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 1460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 1053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-16 21:11:08,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [488 Valid, 1165 Invalid, 1460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 1053 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-16 21:11:08,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-11-16 21:11:09,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 311. [2021-11-16 21:11:09,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 197 states have (on average 1.131979695431472) internal successors, (223), 200 states have internal predecessors, (223), 80 states have call successors, (80), 27 states have call predecessors, (80), 33 states have return successors, (94), 83 states have call predecessors, (94), 79 states have call successors, (94) [2021-11-16 21:11:09,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 397 transitions. [2021-11-16 21:11:09,013 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 397 transitions. Word has length 258 [2021-11-16 21:11:09,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:11:09,014 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 397 transitions. [2021-11-16 21:11:09,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (34), 6 states have call predecessors, (34), 2 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-16 21:11:09,014 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 397 transitions. [2021-11-16 21:11:09,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-11-16 21:11:09,016 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:11:09,016 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:11:09,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-16 21:11:09,017 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:11:09,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:11:09,017 INFO L85 PathProgramCache]: Analyzing trace with hash 972721738, now seen corresponding path program 1 times [2021-11-16 21:11:09,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:11:09,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470576105] [2021-11-16 21:11:09,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:11:09,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:11:09,068 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 21:11:09,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [606547637] [2021-11-16 21:11:09,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:11:09,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:11:09,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:11:09,072 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:11:09,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-16 21:11:09,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:09,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 2905 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-16 21:11:09,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:11:09,973 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2021-11-16 21:11:09,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:11:09,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:11:09,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470576105] [2021-11-16 21:11:09,974 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 21:11:09,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606547637] [2021-11-16 21:11:09,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606547637] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:11:09,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:11:09,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-16 21:11:09,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350021999] [2021-11-16 21:11:09,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:11:09,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-16 21:11:09,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:11:09,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-16 21:11:09,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-16 21:11:09,976 INFO L87 Difference]: Start difference. First operand 311 states and 397 transitions. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 3 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-16 21:11:10,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:11:10,127 INFO L93 Difference]: Finished difference Result 615 states and 782 transitions. [2021-11-16 21:11:10,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-16 21:11:10,128 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 3 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 258 [2021-11-16 21:11:10,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:11:10,130 INFO L225 Difference]: With dead ends: 615 [2021-11-16 21:11:10,130 INFO L226 Difference]: Without dead ends: 313 [2021-11-16 21:11:10,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-16 21:11:10,131 INFO L933 BasicCegarLoop]: 287 mSDtfsCounter, 2 mSDsluCounter, 1101 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 21:11:10,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1388 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-16 21:11:10,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-11-16 21:11:10,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2021-11-16 21:11:10,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 198 states have (on average 1.1313131313131313) internal successors, (224), 202 states have internal predecessors, (224), 80 states have call successors, (80), 27 states have call predecessors, (80), 34 states have return successors, (94), 83 states have call predecessors, (94), 79 states have call successors, (94) [2021-11-16 21:11:10,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 398 transitions. [2021-11-16 21:11:10,149 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 398 transitions. Word has length 258 [2021-11-16 21:11:10,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:11:10,149 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 398 transitions. [2021-11-16 21:11:10,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 3 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-16 21:11:10,150 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 398 transitions. [2021-11-16 21:11:10,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-11-16 21:11:10,152 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:11:10,152 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:11:10,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-16 21:11:10,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:11:10,356 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:11:10,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:11:10,356 INFO L85 PathProgramCache]: Analyzing trace with hash 967897984, now seen corresponding path program 1 times [2021-11-16 21:11:10,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:11:10,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85669826] [2021-11-16 21:11:10,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:11:10,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:11:10,396 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 21:11:10,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1511668781] [2021-11-16 21:11:10,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:11:10,396 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:11:10,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:11:10,397 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:11:10,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-16 21:11:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:10,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 2999 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-16 21:11:10,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:11:11,272 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 267 proven. 0 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2021-11-16 21:11:11,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 21:11:11,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 21:11:11,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85669826] [2021-11-16 21:11:11,273 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-16 21:11:11,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511668781] [2021-11-16 21:11:11,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511668781] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 21:11:11,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 21:11:11,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-16 21:11:11,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808493779] [2021-11-16 21:11:11,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 21:11:11,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-16 21:11:11,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 21:11:11,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-16 21:11:11,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-16 21:11:11,275 INFO L87 Difference]: Start difference. First operand 313 states and 398 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 3 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-16 21:11:11,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 21:11:11,433 INFO L93 Difference]: Finished difference Result 507 states and 644 transitions. [2021-11-16 21:11:11,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-16 21:11:11,434 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 3 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 270 [2021-11-16 21:11:11,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 21:11:11,436 INFO L225 Difference]: With dead ends: 507 [2021-11-16 21:11:11,436 INFO L226 Difference]: Without dead ends: 273 [2021-11-16 21:11:11,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-16 21:11:11,437 INFO L933 BasicCegarLoop]: 287 mSDtfsCounter, 2 mSDsluCounter, 1101 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 21:11:11,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1388 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-16 21:11:11,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-11-16 21:11:11,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 264. [2021-11-16 21:11:11,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 169 states have (on average 1.1301775147928994) internal successors, (191), 170 states have internal predecessors, (191), 67 states have call successors, (67), 26 states have call predecessors, (67), 27 states have return successors, (71), 67 states have call predecessors, (71), 66 states have call successors, (71) [2021-11-16 21:11:11,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 329 transitions. [2021-11-16 21:11:11,468 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 329 transitions. Word has length 270 [2021-11-16 21:11:11,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 21:11:11,468 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 329 transitions. [2021-11-16 21:11:11,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 3 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-16 21:11:11,469 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 329 transitions. [2021-11-16 21:11:11,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2021-11-16 21:11:11,470 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 21:11:11,471 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 21:11:11,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-16 21:11:11,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:11:11,700 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 21:11:11,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 21:11:11,701 INFO L85 PathProgramCache]: Analyzing trace with hash -2044822841, now seen corresponding path program 1 times [2021-11-16 21:11:11,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 21:11:11,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834436496] [2021-11-16 21:11:11,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:11:11,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 21:11:11,739 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-16 21:11:11,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [350140024] [2021-11-16 21:11:11,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 21:11:11,740 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 21:11:11,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 21:11:11,741 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 21:11:11,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-16 21:11:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 21:11:12,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 2984 conjuncts, 239 conjunts are in the unsatisfiable core [2021-11-16 21:11:12,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 21:11:12,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-16 21:11:13,088 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-16 21:11:13,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-16 21:11:13,124 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-16 21:11:13,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 14 [2021-11-16 21:11:13,625 INFO L354 Elim1Store]: treesize reduction 211, result has 10.2 percent of original size [2021-11-16 21:11:13,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 67 treesize of output 70 [2021-11-16 21:11:14,139 INFO L354 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2021-11-16 21:11:14,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 40 [2021-11-16 21:11:14,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 21:11:14,263 INFO L354 Elim1Store]: treesize reduction 66, result has 32.7 percent of original size [2021-11-16 21:11:14,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 31 treesize of output 58 [2021-11-16 21:11:14,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 68 [2021-11-16 21:11:14,604 INFO L354 Elim1Store]: treesize reduction 156, result has 17.5 percent of original size [2021-11-16 21:11:14,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 77 treesize of output 94 [2021-11-16 21:11:15,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-16 21:11:52,576 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 266 treesize of output 198 [2021-11-16 21:11:52,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 21:11:52,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 21:11:52,656 INFO L354 Elim1Store]: treesize reduction 232, result has 20.8 percent of original size [2021-11-16 21:11:52,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 289 treesize of output 243 [2021-11-16 21:11:52,752 INFO L354 Elim1Store]: treesize reduction 162, result has 25.0 percent of original size [2021-11-16 21:11:52,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 300 treesize of output 340 [2021-11-16 21:11:52,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 21:11:52,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 21:11:52,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 14 [2021-11-16 21:11:53,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 21:11:53,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 21:11:53,103 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-16 21:11:53,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 102 treesize of output 65 [2021-11-16 21:11:53,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 21:11:53,123 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-16 21:11:53,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 43 [2021-11-16 21:13:47,097 INFO L354 Elim1Store]: treesize reduction 76, result has 33.3 percent of original size [2021-11-16 21:13:47,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 110 treesize of output 120 [2021-11-16 21:16:43,730 INFO L354 Elim1Store]: treesize reduction 358, result has 21.1 percent of original size [2021-11-16 21:16:43,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 133 treesize of output 208 [2021-11-16 21:18:16,809 INFO L354 Elim1Store]: treesize reduction 60, result has 50.4 percent of original size [2021-11-16 21:18:16,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 155 treesize of output 201 [2021-11-16 21:18:16,829 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-16 21:18:16,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 189 treesize of output 173 [2021-11-16 21:18:52,223 INFO L354 Elim1Store]: treesize reduction 146, result has 28.8 percent of original size [2021-11-16 21:18:52,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 221 treesize of output 232 [2021-11-16 21:18:52,520 INFO L354 Elim1Store]: treesize reduction 615, result has 6.7 percent of original size [2021-11-16 21:18:52,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 2 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 239 treesize of output 252 Killed by 15