./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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_iter_begin_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 0f893dc40cf70b8d30dda6e110329e0bc2218e18bc668acf080889b069fe51ab --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 22:22:30,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 22:22:30,053 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 22:22:30,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 22:22:30,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 22:22:30,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 22:22:30,092 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 22:22:30,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 22:22:30,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 22:22:30,104 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 22:22:30,105 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 22:22:30,107 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 22:22:30,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 22:22:30,109 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 22:22:30,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 22:22:30,112 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 22:22:30,113 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 22:22:30,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 22:22:30,117 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 22:22:30,123 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 22:22:30,124 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 22:22:30,125 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 22:22:30,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 22:22:30,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 22:22:30,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 22:22:30,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 22:22:30,131 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 22:22:30,132 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 22:22:30,133 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 22:22:30,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 22:22:30,134 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 22:22:30,135 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 22:22:30,136 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 22:22:30,137 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 22:22:30,137 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 22:22:30,138 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 22:22:30,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 22:22:30,139 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 22:22:30,139 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 22:22:30,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 22:22:30,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 22:22:30,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 22:22:30,142 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 22:22:30,177 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 22:22:30,178 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 22:22:30,178 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 22:22:30,178 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 22:22:30,179 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 22:22:30,179 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 22:22:30,180 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 22:22:30,180 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 22:22:30,180 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 22:22:30,181 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 22:22:30,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 22:22:30,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 22:22:30,181 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 22:22:30,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 22:22:30,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 22:22:30,182 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 22:22:30,182 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 22:22:30,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 22:22:30,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 22:22:30,184 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 22:22:30,184 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 22:22:30,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:22:30,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 22:22:30,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 22:22:30,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 22:22:30,185 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 22:22:30,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 22:22:30,185 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 22:22:30,185 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 22:22:30,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 22:22:30,186 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f893dc40cf70b8d30dda6e110329e0bc2218e18bc668acf080889b069fe51ab [2022-07-22 22:22:30,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 22:22:30,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 22:22:30,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 22:22:30,433 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 22:22:30,433 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 22:22:30,435 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i [2022-07-22 22:22:30,511 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3fc1e72f/f4ff0c5d2c004326af46d06ad3ad4626/FLAGa42f771a4 [2022-07-22 22:22:31,207 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 22:22:31,208 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i [2022-07-22 22:22:31,250 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3fc1e72f/f4ff0c5d2c004326af46d06ad3ad4626/FLAGa42f771a4 [2022-07-22 22:22:31,343 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3fc1e72f/f4ff0c5d2c004326af46d06ad3ad4626 [2022-07-22 22:22:31,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 22:22:31,347 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 22:22:31,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 22:22:31,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 22:22:31,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 22:22:31,355 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:22:31" (1/1) ... [2022-07-22 22:22:31,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24a58292 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:22:31, skipping insertion in model container [2022-07-22 22:22:31,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:22:31" (1/1) ... [2022-07-22 22:22:31,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 22:22:31,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 22:22:31,719 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_iter_begin_harness.i[4493,4506] [2022-07-22 22:22:31,726 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i[4553,4566] [2022-07-22 22:22:32,446 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:32,447 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:32,448 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:32,449 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:32,450 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:32,465 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:32,466 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:32,467 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:32,467 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:32,469 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:32,470 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:32,470 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:32,470 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:32,817 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:22:32,819 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:22:32,819 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:22:32,820 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:22:32,821 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:22:32,822 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:22:32,823 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:22:32,823 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:22:32,824 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:22:32,825 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:22:32,987 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:22:33,240 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:33,241 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:33,262 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:33,264 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:33,270 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:33,270 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:33,290 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:33,292 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:33,294 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:33,295 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:33,295 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:33,296 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:33,296 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:33,350 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:22:33,391 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 22:22:33,412 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_iter_begin_harness.i[4493,4506] [2022-07-22 22:22:33,413 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_iter_begin_harness.i[4553,4566] [2022-07-22 22:22:33,453 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:33,454 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:33,454 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:33,455 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:33,455 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:33,461 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:33,462 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:33,465 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:33,465 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:33,466 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:33,466 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:33,467 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:33,467 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:33,490 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:22:33,491 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:22:33,492 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:22:33,492 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:22:33,493 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:22:33,493 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:22:33,495 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:22:33,496 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:22:33,496 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:22:33,497 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:22:33,518 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:22:33,627 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:33,627 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:33,632 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:33,633 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:33,635 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:33,635 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:33,645 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:33,645 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:33,646 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:33,646 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:33,646 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:33,647 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:33,647 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:22:33,661 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:22:33,916 INFO L208 MainTranslator]: Completed translation [2022-07-22 22:22:33,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:22:33 WrapperNode [2022-07-22 22:22:33,917 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 22:22:33,918 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 22:22:33,918 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 22:22:33,918 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 22:22:33,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:22:33" (1/1) ... [2022-07-22 22:22:34,053 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:22:33" (1/1) ... [2022-07-22 22:22:34,123 INFO L137 Inliner]: procedures = 774, calls = 2446, calls flagged for inlining = 67, calls inlined = 11, statements flattened = 624 [2022-07-22 22:22:34,125 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 22:22:34,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 22:22:34,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 22:22:34,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 22:22:34,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:22:33" (1/1) ... [2022-07-22 22:22:34,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:22:33" (1/1) ... [2022-07-22 22:22:34,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:22:33" (1/1) ... [2022-07-22 22:22:34,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:22:33" (1/1) ... [2022-07-22 22:22:34,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:22:33" (1/1) ... [2022-07-22 22:22:34,206 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:22:33" (1/1) ... [2022-07-22 22:22:34,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:22:33" (1/1) ... [2022-07-22 22:22:34,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 22:22:34,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 22:22:34,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 22:22:34,222 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 22:22:34,223 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:22:33" (1/1) ... [2022-07-22 22:22:34,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:22:34,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:22:34,257 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 22:22:34,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-07-22 22:22:34,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 22:22:34,288 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-22 22:22:34,288 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-22 22:22:34,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-22 22:22:34,289 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-22 22:22:34,289 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2022-07-22 22:22:34,289 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2022-07-22 22:22:34,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 22:22:34,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 22:22:34,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 22:22:34,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 22:22:34,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 22:22:34,290 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-22 22:22:34,290 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-22 22:22:34,290 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-22 22:22:34,290 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-22 22:22:34,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-22 22:22:34,291 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-22 22:22:34,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 22:22:34,291 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-07-22 22:22:34,291 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-07-22 22:22:34,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 22:22:34,292 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-22 22:22:34,292 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-22 22:22:34,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 22:22:34,292 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2022-07-22 22:22:34,292 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2022-07-22 22:22:34,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 22:22:34,293 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_begin [2022-07-22 22:22:34,293 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_begin [2022-07-22 22:22:34,293 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2022-07-22 22:22:34,293 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2022-07-22 22:22:34,293 INFO L130 BoogieDeclarations]: Found specification of procedure s_get_next_element [2022-07-22 22:22:34,293 INFO L138 BoogieDeclarations]: Found implementation of procedure s_get_next_element [2022-07-22 22:22:34,293 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 22:22:34,294 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 22:22:34,294 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_is_valid [2022-07-22 22:22:34,294 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_is_valid [2022-07-22 22:22:34,294 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2022-07-22 22:22:34,294 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2022-07-22 22:22:34,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 22:22:34,295 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-22 22:22:34,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-22 22:22:34,298 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-07-22 22:22:34,298 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-07-22 22:22:34,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 22:22:34,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 22:22:34,633 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 22:22:34,635 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 22:22:34,802 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !true; [2022-07-22 22:22:35,606 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 22:22:35,615 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 22:22:35,620 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-07-22 22:22:35,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:22:35 BoogieIcfgContainer [2022-07-22 22:22:35,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 22:22:35,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 22:22:35,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 22:22:35,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 22:22:35,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 10:22:31" (1/3) ... [2022-07-22 22:22:35,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d4d7fca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:22:35, skipping insertion in model container [2022-07-22 22:22:35,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:22:33" (2/3) ... [2022-07-22 22:22:35,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d4d7fca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:22:35, skipping insertion in model container [2022-07-22 22:22:35,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:22:35" (3/3) ... [2022-07-22 22:22:35,631 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_iter_begin_harness.i [2022-07-22 22:22:35,644 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 22:22:35,645 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 22:22:35,713 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 22:22:35,722 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@364ef571, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@672e0cb0 [2022-07-22 22:22:35,722 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 22:22:35,726 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 114 states have (on average 1.2456140350877194) internal successors, (142), 113 states have internal predecessors, (142), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-07-22 22:22:35,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-22 22:22:35,768 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:22:35,769 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 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] [2022-07-22 22:22:35,769 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:22:35,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:22:35,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1612502020, now seen corresponding path program 1 times [2022-07-22 22:22:35,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:22:35,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658599119] [2022-07-22 22:22:35,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:35,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:22:36,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:36,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:22:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:36,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:22:36,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:36,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:22:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:36,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:22:36,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:36,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:22:36,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:22:36,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658599119] [2022-07-22 22:22:36,363 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-07-22 22:22:36,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221448350] [2022-07-22 22:22:36,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:36,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:22:36,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:22:36,367 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:22:36,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 22:22:36,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:37,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 2556 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-22 22:22:37,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:22:37,040 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-07-22 22:22:37,042 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:22:37,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221448350] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:22:37,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:22:37,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 22:22:37,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188851704] [2022-07-22 22:22:37,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:22:37,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 22:22:37,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:22:37,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 22:22:37,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 22:22:37,081 INFO L87 Difference]: Start difference. First operand has 171 states, 114 states have (on average 1.2456140350877194) internal successors, (142), 113 states have internal predecessors, (142), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 22:22:37,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:22:37,136 INFO L93 Difference]: Finished difference Result 333 states and 453 transitions. [2022-07-22 22:22:37,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 22:22:37,138 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 148 [2022-07-22 22:22:37,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:22:37,153 INFO L225 Difference]: With dead ends: 333 [2022-07-22 22:22:37,153 INFO L226 Difference]: Without dead ends: 164 [2022-07-22 22:22:37,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 22:22:37,166 INFO L413 NwaCegarLoop]: 215 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, 215 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 [2022-07-22 22:22:37,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:22:37,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-07-22 22:22:37,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2022-07-22 22:22:37,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 106 states have (on average 1.2264150943396226) internal successors, (130), 107 states have internal predecessors, (130), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-07-22 22:22:37,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 209 transitions. [2022-07-22 22:22:37,227 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 209 transitions. Word has length 148 [2022-07-22 22:22:37,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:22:37,227 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 209 transitions. [2022-07-22 22:22:37,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 22:22:37,228 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 209 transitions. [2022-07-22 22:22:37,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-22 22:22:37,235 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:22:37,235 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 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] [2022-07-22 22:22:37,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 22:22:37,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-22 22:22:37,460 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:22:37,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:22:37,460 INFO L85 PathProgramCache]: Analyzing trace with hash 818348810, now seen corresponding path program 1 times [2022-07-22 22:22:37,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:22:37,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844296845] [2022-07-22 22:22:37,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:37,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:22:37,577 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:22:37,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [622528717] [2022-07-22 22:22:37,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:37,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:22:37,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:22:37,580 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:22:37,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 22:22:38,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:38,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 2584 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 22:22:38,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:22:38,377 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-07-22 22:22:38,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:22:38,631 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-22 22:22:38,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:22:38,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844296845] [2022-07-22 22:22:38,632 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:22:38,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622528717] [2022-07-22 22:22:38,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622528717] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 22:22:38,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:22:38,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2022-07-22 22:22:38,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163836085] [2022-07-22 22:22:38,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:22:38,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 22:22:38,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:22:38,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 22:22:38,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-07-22 22:22:38,640 INFO L87 Difference]: Start difference. First operand 164 states and 209 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 7 states have internal predecessors, (59), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-22 22:22:38,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:22:38,972 INFO L93 Difference]: Finished difference Result 230 states and 298 transitions. [2022-07-22 22:22:38,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 22:22:38,973 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 7 states have internal predecessors, (59), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) Word has length 154 [2022-07-22 22:22:38,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:22:38,976 INFO L225 Difference]: With dead ends: 230 [2022-07-22 22:22:38,976 INFO L226 Difference]: Without dead ends: 166 [2022-07-22 22:22:38,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-07-22 22:22:38,978 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 212 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:22:38,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 810 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 22:22:38,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-07-22 22:22:38,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2022-07-22 22:22:38,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 107 states have (on average 1.2242990654205608) internal successors, (131), 109 states have internal predecessors, (131), 40 states have call successors, (40), 17 states have call predecessors, (40), 18 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2022-07-22 22:22:38,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 211 transitions. [2022-07-22 22:22:38,994 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 211 transitions. Word has length 154 [2022-07-22 22:22:38,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:22:38,995 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 211 transitions. [2022-07-22 22:22:38,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 7 states have internal predecessors, (59), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-22 22:22:38,995 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 211 transitions. [2022-07-22 22:22:38,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-22 22:22:38,997 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:22:38,997 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 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] [2022-07-22 22:22:39,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 22:22:39,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-07-22 22:22:39,216 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:22:39,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:22:39,216 INFO L85 PathProgramCache]: Analyzing trace with hash -226987588, now seen corresponding path program 1 times [2022-07-22 22:22:39,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:22:39,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154966265] [2022-07-22 22:22:39,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:39,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:22:39,287 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:22:39,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1524583029] [2022-07-22 22:22:39,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:39,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:22:39,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:22:39,289 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:22:39,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 22:22:39,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:39,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 2589 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 22:22:39,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:22:39,826 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-07-22 22:22:39,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:22:39,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:22:39,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154966265] [2022-07-22 22:22:39,827 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:22:39,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524583029] [2022-07-22 22:22:39,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524583029] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:22:39,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:22:39,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 22:22:39,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591569032] [2022-07-22 22:22:39,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:22:39,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:22:39,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:22:39,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:22:39,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:22:39,830 INFO L87 Difference]: Start difference. First operand 166 states and 211 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-22 22:22:39,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:22:39,869 INFO L93 Difference]: Finished difference Result 325 states and 414 transitions. [2022-07-22 22:22:39,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:22:39,870 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 155 [2022-07-22 22:22:39,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:22:39,875 INFO L225 Difference]: With dead ends: 325 [2022-07-22 22:22:39,875 INFO L226 Difference]: Without dead ends: 171 [2022-07-22 22:22:39,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 22:22:39,878 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 2 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:22:39,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 819 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:22:39,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-07-22 22:22:39,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2022-07-22 22:22:39,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 111 states have (on average 1.2162162162162162) internal successors, (135), 113 states have internal predecessors, (135), 40 states have call successors, (40), 17 states have call predecessors, (40), 19 states have return successors, (41), 40 states have call predecessors, (41), 39 states have call successors, (41) [2022-07-22 22:22:39,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 216 transitions. [2022-07-22 22:22:39,906 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 216 transitions. Word has length 155 [2022-07-22 22:22:39,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:22:39,909 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 216 transitions. [2022-07-22 22:22:39,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-22 22:22:39,909 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 216 transitions. [2022-07-22 22:22:39,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 22:22:39,911 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:22:39,912 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:22:39,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 22:22:40,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:22:40,117 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:22:40,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:22:40,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1170775228, now seen corresponding path program 1 times [2022-07-22 22:22:40,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:22:40,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512765662] [2022-07-22 22:22:40,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:40,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:22:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:40,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:22:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:40,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:22:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:40,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:22:40,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:40,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:22:40,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:40,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:22:40,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:40,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:40,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:40,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:40,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:22:40,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:40,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:22:40,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:40,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:22:40,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:40,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:40,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:22:40,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:40,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:22:40,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:40,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:22:40,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:40,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:40,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:40,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:40,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:40,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:22:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:40,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 22:22:40,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:40,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 22:22:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:40,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-22 22:22:40,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:40,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-22 22:22:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:40,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-22 22:22:40,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:40,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 22:22:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:40,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-22 22:22:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:40,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-22 22:22:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:40,812 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-07-22 22:22:40,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:22:40,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512765662] [2022-07-22 22:22:40,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512765662] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:22:40,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637939541] [2022-07-22 22:22:40,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:40,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:22:40,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:22:40,815 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:22:40,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 22:22:41,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:41,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 2597 conjuncts, 32 conjunts are in the unsatisfiable core [2022-07-22 22:22:41,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:22:41,506 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-22 22:22:41,759 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-22 22:22:41,759 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:22:41,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637939541] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:22:41,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:22:41,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14] total 22 [2022-07-22 22:22:41,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760899040] [2022-07-22 22:22:41,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:22:41,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 22:22:41,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:22:41,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 22:22:41,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2022-07-22 22:22:41,762 INFO L87 Difference]: Start difference. First operand 171 states and 216 transitions. Second operand has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 9 states have internal predecessors, (87), 4 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-22 22:22:41,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:22:41,926 INFO L93 Difference]: Finished difference Result 330 states and 416 transitions. [2022-07-22 22:22:41,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 22:22:41,927 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 9 states have internal predecessors, (87), 4 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 167 [2022-07-22 22:22:41,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:22:41,928 INFO L225 Difference]: With dead ends: 330 [2022-07-22 22:22:41,929 INFO L226 Difference]: Without dead ends: 180 [2022-07-22 22:22:41,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2022-07-22 22:22:41,930 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 12 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 128 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:22:41,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1678 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 128 Unchecked, 0.1s Time] [2022-07-22 22:22:41,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-07-22 22:22:41,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2022-07-22 22:22:41,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 119 states have (on average 1.218487394957983) internal successors, (145), 121 states have internal predecessors, (145), 40 states have call successors, (40), 18 states have call predecessors, (40), 20 states have return successors, (42), 40 states have call predecessors, (42), 39 states have call successors, (42) [2022-07-22 22:22:41,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 227 transitions. [2022-07-22 22:22:41,942 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 227 transitions. Word has length 167 [2022-07-22 22:22:41,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:22:41,943 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 227 transitions. [2022-07-22 22:22:41,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 9 states have internal predecessors, (87), 4 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-22 22:22:41,943 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 227 transitions. [2022-07-22 22:22:41,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 22:22:41,945 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:22:41,945 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:22:41,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-22 22:22:42,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:22:42,158 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:22:42,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:22:42,159 INFO L85 PathProgramCache]: Analyzing trace with hash -695933446, now seen corresponding path program 1 times [2022-07-22 22:22:42,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:22:42,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067958961] [2022-07-22 22:22:42,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:42,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:22:42,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:42,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:22:42,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:42,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:22:42,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:42,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:22:42,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:42,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:22:42,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:42,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:22:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:42,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:42,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:42,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:42,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:42,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:22:42,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:42,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:22:42,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:42,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:22:42,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:42,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:42,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:22:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:42,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:22:42,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:42,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:22:42,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:42,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:42,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:42,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:42,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:22:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:42,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 22:22:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:42,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 22:22:42,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:42,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-22 22:22:42,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:42,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-22 22:22:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:42,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-22 22:22:42,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:42,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 22:22:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:42,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-22 22:22:42,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:42,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-22 22:22:42,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:42,667 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-07-22 22:22:42,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:22:42,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067958961] [2022-07-22 22:22:42,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067958961] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:22:42,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272735198] [2022-07-22 22:22:42,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:42,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:22:42,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:22:42,670 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:22:42,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 22:22:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:43,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 2592 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 22:22:43,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:22:43,284 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-22 22:22:43,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:22:43,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272735198] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:22:43,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:22:43,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2022-07-22 22:22:43,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652348764] [2022-07-22 22:22:43,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:22:43,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 22:22:43,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:22:43,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 22:22:43,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-07-22 22:22:43,287 INFO L87 Difference]: Start difference. First operand 180 states and 227 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-07-22 22:22:43,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:22:43,441 INFO L93 Difference]: Finished difference Result 334 states and 425 transitions. [2022-07-22 22:22:43,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:22:43,442 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 167 [2022-07-22 22:22:43,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:22:43,443 INFO L225 Difference]: With dead ends: 334 [2022-07-22 22:22:43,443 INFO L226 Difference]: Without dead ends: 182 [2022-07-22 22:22:43,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-07-22 22:22:43,445 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 217 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:22:43,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 515 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:22:43,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-07-22 22:22:43,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2022-07-22 22:22:43,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 120 states have (on average 1.2083333333333333) internal successors, (145), 122 states have internal predecessors, (145), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (45), 41 states have call predecessors, (45), 40 states have call successors, (45) [2022-07-22 22:22:43,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 231 transitions. [2022-07-22 22:22:43,456 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 231 transitions. Word has length 167 [2022-07-22 22:22:43,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:22:43,456 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 231 transitions. [2022-07-22 22:22:43,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-07-22 22:22:43,456 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 231 transitions. [2022-07-22 22:22:43,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-07-22 22:22:43,458 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:22:43,458 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:22:43,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 22:22:43,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:22:43,678 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:22:43,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:22:43,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1022744148, now seen corresponding path program 1 times [2022-07-22 22:22:43,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:22:43,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988542153] [2022-07-22 22:22:43,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:43,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:22:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:43,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:22:43,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:43,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:22:43,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:43,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:22:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:43,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:22:43,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:43,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:22:43,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:43,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:43,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:43,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:43,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:22:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:43,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:22:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:43,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:22:43,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:43,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:43,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:43,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:22:43,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:43,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:22:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:44,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:22:44,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:44,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:22:44,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:44,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:44,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:44,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:44,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:22:44,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:44,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 22:22:44,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:44,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-22 22:22:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:44,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-22 22:22:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:44,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 22:22:44,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:44,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 22:22:44,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:44,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-22 22:22:44,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:44,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-22 22:22:44,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:44,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-22 22:22:44,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:44,129 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-07-22 22:22:44,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:22:44,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988542153] [2022-07-22 22:22:44,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988542153] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:22:44,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381757891] [2022-07-22 22:22:44,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:44,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:22:44,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:22:44,132 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:22:44,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 22:22:44,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:44,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 2621 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-22 22:22:44,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:22:45,493 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= 0 (select (select |c_#memory_$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 [2022-07-22 22:22:51,462 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-07-22 22:22:51,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:22:51,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381757891] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:22:51,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:22:51,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-07-22 22:22:51,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357230879] [2022-07-22 22:22:51,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:22:51,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 22:22:51,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:22:51,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 22:22:51,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=202, Unknown=3, NotChecked=28, Total=272 [2022-07-22 22:22:51,465 INFO L87 Difference]: Start difference. First operand 182 states and 231 transitions. Second operand has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-22 22:22:51,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:22:51,689 INFO L93 Difference]: Finished difference Result 341 states and 443 transitions. [2022-07-22 22:22:51,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 22:22:51,690 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) Word has length 173 [2022-07-22 22:22:51,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:22:51,692 INFO L225 Difference]: With dead ends: 341 [2022-07-22 22:22:51,692 INFO L226 Difference]: Without dead ends: 185 [2022-07-22 22:22:51,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=54, Invalid=253, Unknown=3, NotChecked=32, Total=342 [2022-07-22 22:22:51,693 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 5 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 313 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:22:51,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1107 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 313 Unchecked, 0.1s Time] [2022-07-22 22:22:51,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-07-22 22:22:51,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 184. [2022-07-22 22:22:51,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 122 states have (on average 1.2049180327868851) internal successors, (147), 123 states have internal predecessors, (147), 41 states have call successors, (41), 19 states have call predecessors, (41), 20 states have return successors, (45), 41 states have call predecessors, (45), 40 states have call successors, (45) [2022-07-22 22:22:51,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 233 transitions. [2022-07-22 22:22:51,710 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 233 transitions. Word has length 173 [2022-07-22 22:22:51,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:22:51,711 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 233 transitions. [2022-07-22 22:22:51,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-22 22:22:51,711 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 233 transitions. [2022-07-22 22:22:51,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-22 22:22:51,713 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:22:51,713 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:22:51,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 22:22:51,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:22:51,928 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:22:51,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:22:51,928 INFO L85 PathProgramCache]: Analyzing trace with hash -183837512, now seen corresponding path program 1 times [2022-07-22 22:22:51,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:22:51,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747572072] [2022-07-22 22:22:51,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:51,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:22:52,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:52,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:22:52,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:52,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:22:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:52,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:22:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:52,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:22:52,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:52,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:22:52,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:52,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:52,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:52,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:52,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:52,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:22:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:52,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:22:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:52,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:22:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:52,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:52,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:52,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:22:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:52,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:22:52,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:52,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:22:52,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:52,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:22:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:52,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:22:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:52,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:52,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:52,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:52,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:52,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:22:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:52,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 22:22:52,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:52,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 22:22:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:52,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-22 22:22:52,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:52,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-22 22:22:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:52,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-22 22:22:52,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:52,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-22 22:22:52,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:52,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-22 22:22:52,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:52,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-22 22:22:52,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:52,668 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2022-07-22 22:22:52,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:22:52,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747572072] [2022-07-22 22:22:52,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747572072] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:22:52,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587208112] [2022-07-22 22:22:52,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:52,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:22:52,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:22:52,672 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:22:52,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 22:22:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:53,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 2651 conjuncts, 41 conjunts are in the unsatisfiable core [2022-07-22 22:22:53,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:22:53,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:22:53,399 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-07-22 22:22:53,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:22:53,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:22:53,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:22:53,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:22:53,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:22:53,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:22:53,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:22:53,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:22:53,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:22:53,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:22:53,810 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-07-22 22:22:54,015 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-07-22 22:22:54,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:22:54,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587208112] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:22:54,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:22:54,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [17] total 30 [2022-07-22 22:22:54,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380575892] [2022-07-22 22:22:54,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:22:54,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-22 22:22:54,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:22:54,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-22 22:22:54,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2022-07-22 22:22:54,017 INFO L87 Difference]: Start difference. First operand 184 states and 233 transitions. Second operand has 15 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 8 states have call successors, (27), 5 states have call predecessors, (27), 3 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2022-07-22 22:22:54,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:22:54,493 INFO L93 Difference]: Finished difference Result 346 states and 435 transitions. [2022-07-22 22:22:54,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 22:22:54,494 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 8 states have call successors, (27), 5 states have call predecessors, (27), 3 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) Word has length 178 [2022-07-22 22:22:54,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:22:54,495 INFO L225 Difference]: With dead ends: 346 [2022-07-22 22:22:54,496 INFO L226 Difference]: Without dead ends: 267 [2022-07-22 22:22:54,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 211 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=126, Invalid=1280, Unknown=0, NotChecked=0, Total=1406 [2022-07-22 22:22:54,497 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 214 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 22:22:54,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 1053 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 190 Invalid, 0 Unknown, 98 Unchecked, 0.3s Time] [2022-07-22 22:22:54,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-07-22 22:22:54,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 258. [2022-07-22 22:22:54,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 181 states have (on average 1.2375690607734806) internal successors, (224), 181 states have internal predecessors, (224), 47 states have call successors, (47), 30 states have call predecessors, (47), 29 states have return successors, (51), 46 states have call predecessors, (51), 46 states have call successors, (51) [2022-07-22 22:22:54,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 322 transitions. [2022-07-22 22:22:54,512 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 322 transitions. Word has length 178 [2022-07-22 22:22:54,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:22:54,512 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 322 transitions. [2022-07-22 22:22:54,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 8 states have call successors, (27), 5 states have call predecessors, (27), 3 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2022-07-22 22:22:54,513 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 322 transitions. [2022-07-22 22:22:54,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-07-22 22:22:54,514 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:22:54,515 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:22:54,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 22:22:54,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:22:54,719 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:22:54,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:22:54,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1017170911, now seen corresponding path program 1 times [2022-07-22 22:22:54,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:22:54,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370192081] [2022-07-22 22:22:54,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:54,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:22:54,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:54,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:22:54,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:54,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:22:54,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:54,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:22:54,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:54,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:22:54,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:54,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:22:54,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:55,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:22:55,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:22:55,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:22:55,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:55,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:22:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:22:55,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:22:55,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:22:55,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:22:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:55,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:55,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:22:55,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 22:22:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 22:22:55,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-22 22:22:55,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-22 22:22:55,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-22 22:22:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:22:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:22:55,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-22 22:22:55,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,410 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2022-07-22 22:22:55,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:22:55,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370192081] [2022-07-22 22:22:55,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370192081] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:22:55,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569647756] [2022-07-22 22:22:55,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:55,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:22:55,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:22:55,413 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:22:55,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 22:22:55,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:55,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 2662 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-22 22:22:55,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:22:56,017 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-07-22 22:22:56,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:22:56,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569647756] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:22:56,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:22:56,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [17] total 22 [2022-07-22 22:22:56,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460125278] [2022-07-22 22:22:56,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:22:56,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 22:22:56,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:22:56,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 22:22:56,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2022-07-22 22:22:56,020 INFO L87 Difference]: Start difference. First operand 258 states and 322 transitions. Second operand has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-07-22 22:22:56,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:22:56,132 INFO L93 Difference]: Finished difference Result 438 states and 552 transitions. [2022-07-22 22:22:56,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 22:22:56,132 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 182 [2022-07-22 22:22:56,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:22:56,134 INFO L225 Difference]: With dead ends: 438 [2022-07-22 22:22:56,134 INFO L226 Difference]: Without dead ends: 267 [2022-07-22 22:22:56,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-07-22 22:22:56,136 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 2 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:22:56,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1155 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:22:56,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-07-22 22:22:56,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2022-07-22 22:22:56,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 187 states have (on average 1.2299465240641712) internal successors, (230), 190 states have internal predecessors, (230), 47 states have call successors, (47), 30 states have call predecessors, (47), 32 states have return successors, (55), 46 states have call predecessors, (55), 46 states have call successors, (55) [2022-07-22 22:22:56,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 332 transitions. [2022-07-22 22:22:56,149 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 332 transitions. Word has length 182 [2022-07-22 22:22:56,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:22:56,150 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 332 transitions. [2022-07-22 22:22:56,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-07-22 22:22:56,150 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 332 transitions. [2022-07-22 22:22:56,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-22 22:22:56,152 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:22:56,153 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:22:56,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-22 22:22:56,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-22 22:22:56,367 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:22:56,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:22:56,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1394290473, now seen corresponding path program 2 times [2022-07-22 22:22:56,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:22:56,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997616085] [2022-07-22 22:22:56,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:56,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:22:56,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:22:56,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:22:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:22:56,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:22:56,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:22:56,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:56,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:22:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:22:56,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:22:56,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:22:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:22:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:22:56,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:22:56,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:22:56,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:56,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:56,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:22:56,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 22:22:56,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 22:22:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:22:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:22:56,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 22:22:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-22 22:22:56,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:56,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-22 22:22:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:57,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:57,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:57,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:22:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:57,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:22:57,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:57,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-22 22:22:57,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:57,156 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-07-22 22:22:57,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:22:57,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997616085] [2022-07-22 22:22:57,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997616085] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:22:57,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:22:57,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-22 22:22:57,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28537682] [2022-07-22 22:22:57,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:22:57,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-22 22:22:57,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:22:57,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-22 22:22:57,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:22:57,161 INFO L87 Difference]: Start difference. First operand 267 states and 332 transitions. Second operand has 20 states, 17 states have (on average 4.588235294117647) internal successors, (78), 14 states have internal predecessors, (78), 9 states have call successors, (27), 7 states have call predecessors, (27), 4 states have return successors, (25), 7 states have call predecessors, (25), 8 states have call successors, (25) [2022-07-22 22:22:59,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:22:59,532 INFO L93 Difference]: Finished difference Result 400 states and 511 transitions. [2022-07-22 22:22:59,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-22 22:22:59,533 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 4.588235294117647) internal successors, (78), 14 states have internal predecessors, (78), 9 states have call successors, (27), 7 states have call predecessors, (27), 4 states have return successors, (25), 7 states have call predecessors, (25), 8 states have call successors, (25) Word has length 193 [2022-07-22 22:22:59,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:22:59,535 INFO L225 Difference]: With dead ends: 400 [2022-07-22 22:22:59,535 INFO L226 Difference]: Without dead ends: 324 [2022-07-22 22:22:59,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=224, Invalid=1258, Unknown=0, NotChecked=0, Total=1482 [2022-07-22 22:22:59,537 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 341 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 2421 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 2686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 2421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 22:22:59,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 1044 Invalid, 2686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 2421 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 22:22:59,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-07-22 22:22:59,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 297. [2022-07-22 22:22:59,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 206 states have (on average 1.2281553398058251) internal successors, (253), 212 states have internal predecessors, (253), 53 states have call successors, (53), 30 states have call predecessors, (53), 37 states have return successors, (69), 54 states have call predecessors, (69), 52 states have call successors, (69) [2022-07-22 22:22:59,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 375 transitions. [2022-07-22 22:22:59,560 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 375 transitions. Word has length 193 [2022-07-22 22:22:59,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:22:59,561 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 375 transitions. [2022-07-22 22:22:59,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 4.588235294117647) internal successors, (78), 14 states have internal predecessors, (78), 9 states have call successors, (27), 7 states have call predecessors, (27), 4 states have return successors, (25), 7 states have call predecessors, (25), 8 states have call successors, (25) [2022-07-22 22:22:59,561 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 375 transitions. [2022-07-22 22:22:59,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-22 22:22:59,563 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:22:59,564 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:22:59,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 22:22:59,564 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:22:59,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:22:59,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1903763563, now seen corresponding path program 1 times [2022-07-22 22:22:59,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:22:59,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669344825] [2022-07-22 22:22:59,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:22:59,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:22:59,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:22:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:22:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:22:59,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:22:59,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:22:59,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:59,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:22:59,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:22:59,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:22:59,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:23:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:00,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:23:00,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:00,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:23:00,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:00,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:23:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:00,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:23:00,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:00,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:23:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:00,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:23:00,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:00,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:23:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:00,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:23:00,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:00,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:23:00,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:00,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:23:00,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:00,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 22:23:00,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:00,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 22:23:00,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:00,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:23:00,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:00,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:23:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:00,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 22:23:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:00,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-22 22:23:00,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:00,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-22 22:23:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:00,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:23:00,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:00,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:23:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:00,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:23:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:00,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-22 22:23:00,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:00,622 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2022-07-22 22:23:00,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:23:00,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669344825] [2022-07-22 22:23:00,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669344825] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:23:00,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672846136] [2022-07-22 22:23:00,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:23:00,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:23:00,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:23:00,628 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:23:00,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 22:23:01,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:01,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 2711 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-22 22:23:01,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:23:01,281 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-07-22 22:23:01,282 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:23:01,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672846136] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:23:01,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:23:01,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [20] total 25 [2022-07-22 22:23:01,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030742751] [2022-07-22 22:23:01,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:23:01,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 22:23:01,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:23:01,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 22:23:01,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=544, Unknown=0, NotChecked=0, Total=600 [2022-07-22 22:23:01,284 INFO L87 Difference]: Start difference. First operand 297 states and 375 transitions. Second operand has 7 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-07-22 22:23:01,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:23:01,390 INFO L93 Difference]: Finished difference Result 432 states and 548 transitions. [2022-07-22 22:23:01,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 22:23:01,390 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 193 [2022-07-22 22:23:01,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:23:01,392 INFO L225 Difference]: With dead ends: 432 [2022-07-22 22:23:01,392 INFO L226 Difference]: Without dead ends: 270 [2022-07-22 22:23:01,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-07-22 22:23:01,394 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 2 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:23:01,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1156 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:23:01,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-07-22 22:23:01,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 268. [2022-07-22 22:23:01,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 185 states have (on average 1.2216216216216216) internal successors, (226), 189 states have internal predecessors, (226), 49 states have call successors, (49), 28 states have call predecessors, (49), 33 states have return successors, (61), 50 states have call predecessors, (61), 48 states have call successors, (61) [2022-07-22 22:23:01,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 336 transitions. [2022-07-22 22:23:01,411 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 336 transitions. Word has length 193 [2022-07-22 22:23:01,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:23:01,411 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 336 transitions. [2022-07-22 22:23:01,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-07-22 22:23:01,412 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 336 transitions. [2022-07-22 22:23:01,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-07-22 22:23:01,413 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:23:01,414 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:23:01,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-22 22:23:01,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-22 22:23:01,627 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:23:01,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:23:01,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1026335268, now seen corresponding path program 1 times [2022-07-22 22:23:01,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:23:01,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406255085] [2022-07-22 22:23:01,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:23:01,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:23:01,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:01,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:23:01,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:01,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:23:01,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:01,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:23:01,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:01,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:23:01,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:01,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:23:01,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:01,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:23:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:01,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:23:01,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:01,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:23:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:01,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:23:01,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:01,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:23:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:01,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:23:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:01,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:23:01,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:01,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:23:01,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:01,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:23:01,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:01,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:23:01,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:01,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:23:01,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:01,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:23:01,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:01,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:23:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:01,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:23:01,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:01,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 22:23:01,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:01,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 22:23:01,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:01,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:23:01,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:01,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:23:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:01,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 22:23:01,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:01,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-22 22:23:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:01,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-22 22:23:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:02,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-22 22:23:02,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:02,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:23:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:02,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-22 22:23:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:02,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-22 22:23:02,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:02,042 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2022-07-22 22:23:02,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:23:02,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406255085] [2022-07-22 22:23:02,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406255085] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:23:02,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:23:02,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 22:23:02,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721794780] [2022-07-22 22:23:02,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:23:02,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 22:23:02,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:23:02,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 22:23:02,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 22:23:02,045 INFO L87 Difference]: Start difference. First operand 268 states and 336 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, (28), 6 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-22 22:23:02,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:23:02,766 INFO L93 Difference]: Finished difference Result 446 states and 567 transitions. [2022-07-22 22:23:02,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 22:23:02,767 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, (28), 6 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 195 [2022-07-22 22:23:02,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:23:02,768 INFO L225 Difference]: With dead ends: 446 [2022-07-22 22:23:02,768 INFO L226 Difference]: Without dead ends: 259 [2022-07-22 22:23:02,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-07-22 22:23:02,769 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 128 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 22:23:02,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 462 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 22:23:02,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-07-22 22:23:02,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 238. [2022-07-22 22:23:02,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 165 states have (on average 1.206060606060606) internal successors, (199), 168 states have internal predecessors, (199), 43 states have call successors, (43), 26 states have call predecessors, (43), 29 states have return successors, (48), 43 states have call predecessors, (48), 42 states have call successors, (48) [2022-07-22 22:23:02,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 290 transitions. [2022-07-22 22:23:02,784 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 290 transitions. Word has length 195 [2022-07-22 22:23:02,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:23:02,786 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 290 transitions. [2022-07-22 22:23:02,786 INFO L496 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, (28), 6 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-22 22:23:02,786 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 290 transitions. [2022-07-22 22:23:02,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-07-22 22:23:02,788 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:23:02,788 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:23:02,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 22:23:02,788 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:23:02,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:23:02,789 INFO L85 PathProgramCache]: Analyzing trace with hash 450820696, now seen corresponding path program 1 times [2022-07-22 22:23:02,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:23:02,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018004053] [2022-07-22 22:23:02,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:23:02,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:23:02,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:03,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:23:03,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:03,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:23:03,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:03,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:23:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:03,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:23:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:03,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:23:03,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:03,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:23:03,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:03,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:23:03,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:03,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:23:03,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:03,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:23:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:03,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:23:03,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:03,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:23:03,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:03,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:23:03,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:03,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:23:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:03,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:23:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:03,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:23:03,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:03,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:23:03,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:03,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:23:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:03,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:23:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:03,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:23:03,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:03,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 22:23:03,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:03,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 22:23:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:03,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:23:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:03,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:23:03,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:03,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 22:23:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:03,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-22 22:23:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:03,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-22 22:23:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:03,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-22 22:23:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:03,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:23:03,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:03,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:23:03,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:03,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-22 22:23:03,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:03,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-22 22:23:03,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:03,755 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2022-07-22 22:23:03,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:23:03,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018004053] [2022-07-22 22:23:03,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018004053] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:23:03,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415309812] [2022-07-22 22:23:03,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:23:03,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:23:03,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:23:03,760 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) [2022-07-22 22:23:03,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 22:23:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:04,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 2759 conjuncts, 41 conjunts are in the unsatisfiable core [2022-07-22 22:23:04,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:23:04,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:04,478 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-07-22 22:23:04,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:04,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:04,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:04,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:04,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:04,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:04,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:04,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:04,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:04,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:04,898 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-07-22 22:23:05,087 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-22 22:23:05,087 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:23:05,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415309812] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:23:05,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:23:05,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [19] total 32 [2022-07-22 22:23:05,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262732743] [2022-07-22 22:23:05,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:23:05,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-22 22:23:05,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:23:05,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-22 22:23:05,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2022-07-22 22:23:05,090 INFO L87 Difference]: Start difference. First operand 238 states and 290 transitions. Second operand has 15 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 9 states have call successors, (29), 5 states have call predecessors, (29), 3 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2022-07-22 22:23:05,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:23:05,759 INFO L93 Difference]: Finished difference Result 334 states and 405 transitions. [2022-07-22 22:23:05,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 22:23:05,759 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 9 states have call successors, (29), 5 states have call predecessors, (29), 3 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) Word has length 200 [2022-07-22 22:23:05,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:23:05,761 INFO L225 Difference]: With dead ends: 334 [2022-07-22 22:23:05,761 INFO L226 Difference]: Without dead ends: 254 [2022-07-22 22:23:05,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 240 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=147, Invalid=1413, Unknown=0, NotChecked=0, Total=1560 [2022-07-22 22:23:05,762 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 199 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1878 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 198 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 22:23:05,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 1878 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 361 Invalid, 0 Unknown, 198 Unchecked, 0.5s Time] [2022-07-22 22:23:05,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-07-22 22:23:05,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 249. [2022-07-22 22:23:05,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 172 states have (on average 1.191860465116279) internal successors, (205), 175 states have internal predecessors, (205), 45 states have call successors, (45), 28 states have call predecessors, (45), 31 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2022-07-22 22:23:05,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 299 transitions. [2022-07-22 22:23:05,774 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 299 transitions. Word has length 200 [2022-07-22 22:23:05,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:23:05,775 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 299 transitions. [2022-07-22 22:23:05,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 9 states have call successors, (29), 5 states have call predecessors, (29), 3 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2022-07-22 22:23:05,775 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 299 transitions. [2022-07-22 22:23:05,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-07-22 22:23:05,777 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:23:05,777 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:23:05,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-22 22:23:06,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-22 22:23:06,004 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:23:06,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:23:06,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1734404003, now seen corresponding path program 1 times [2022-07-22 22:23:06,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:23:06,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083299917] [2022-07-22 22:23:06,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:23:06,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:23:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:06,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:23:06,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:06,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:23:06,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:06,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:23:06,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:06,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:23:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:06,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:23:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:06,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:23:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:06,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:23:06,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:06,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:23:06,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:06,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:23:06,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:06,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:23:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:06,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:23:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:06,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:23:06,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:06,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:23:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:06,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:23:06,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:06,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:23:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:06,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:23:06,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:06,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:23:06,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:06,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:23:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:06,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:23:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:06,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 22:23:06,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:06,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 22:23:06,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:06,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:23:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:06,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:23:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:07,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 22:23:07,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:07,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-22 22:23:07,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:07,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-22 22:23:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:07,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-22 22:23:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:07,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:23:07,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:07,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:23:07,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:07,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-22 22:23:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:07,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-22 22:23:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:07,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:23:07,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:07,323 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 24 proven. 22 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2022-07-22 22:23:07,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:23:07,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083299917] [2022-07-22 22:23:07,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083299917] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:23:07,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652896493] [2022-07-22 22:23:07,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:23:07,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:23:07,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:23:07,328 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) [2022-07-22 22:23:07,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-22 22:23:07,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:07,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 2786 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-22 22:23:07,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:23:08,105 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-07-22 22:23:08,105 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:23:08,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652896493] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:23:08,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:23:08,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [30] total 34 [2022-07-22 22:23:08,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254362781] [2022-07-22 22:23:08,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:23:08,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 22:23:08,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:23:08,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 22:23:08,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1041, Unknown=0, NotChecked=0, Total=1122 [2022-07-22 22:23:08,108 INFO L87 Difference]: Start difference. First operand 249 states and 299 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-07-22 22:23:08,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:23:08,213 INFO L93 Difference]: Finished difference Result 488 states and 585 transitions. [2022-07-22 22:23:08,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:23:08,214 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 209 [2022-07-22 22:23:08,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:23:08,215 INFO L225 Difference]: With dead ends: 488 [2022-07-22 22:23:08,216 INFO L226 Difference]: Without dead ends: 251 [2022-07-22 22:23:08,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=1105, Unknown=0, NotChecked=0, Total=1190 [2022-07-22 22:23:08,218 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 2 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:23:08,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 947 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:23:08,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-07-22 22:23:08,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2022-07-22 22:23:08,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 173 states have (on average 1.1907514450867052) internal successors, (206), 177 states have internal predecessors, (206), 45 states have call successors, (45), 28 states have call predecessors, (45), 32 states have return successors, (50), 45 states have call predecessors, (50), 44 states have call successors, (50) [2022-07-22 22:23:08,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 301 transitions. [2022-07-22 22:23:08,232 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 301 transitions. Word has length 209 [2022-07-22 22:23:08,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:23:08,233 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 301 transitions. [2022-07-22 22:23:08,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-07-22 22:23:08,234 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 301 transitions. [2022-07-22 22:23:08,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-22 22:23:08,236 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:23:08,237 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 22:23:08,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-22 22:23:08,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-22 22:23:08,463 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:23:08,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:23:08,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1271160118, now seen corresponding path program 1 times [2022-07-22 22:23:08,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:23:08,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086716994] [2022-07-22 22:23:08,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:23:08,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:23:08,526 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:23:08,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1699616174] [2022-07-22 22:23:08,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:23:08,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:23:08,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:23:08,529 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) [2022-07-22 22:23:08,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-22 22:23:09,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:09,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 2891 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-22 22:23:09,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:23:09,226 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-07-22 22:23:09,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:23:09,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:23:09,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086716994] [2022-07-22 22:23:09,227 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:23:09,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699616174] [2022-07-22 22:23:09,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699616174] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:23:09,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:23:09,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 22:23:09,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341355111] [2022-07-22 22:23:09,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:23:09,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 22:23:09,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:23:09,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 22:23:09,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 22:23:09,230 INFO L87 Difference]: Start difference. First operand 251 states and 301 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-07-22 22:23:09,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:23:09,317 INFO L93 Difference]: Finished difference Result 429 states and 516 transitions. [2022-07-22 22:23:09,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:23:09,318 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 215 [2022-07-22 22:23:09,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:23:09,320 INFO L225 Difference]: With dead ends: 429 [2022-07-22 22:23:09,320 INFO L226 Difference]: Without dead ends: 249 [2022-07-22 22:23:09,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 22:23:09,321 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 2 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:23:09,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 948 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:23:09,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-07-22 22:23:09,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 244. [2022-07-22 22:23:09,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 168 states have (on average 1.1845238095238095) internal successors, (199), 171 states have internal predecessors, (199), 45 states have call successors, (45), 28 states have call predecessors, (45), 30 states have return successors, (48), 44 states have call predecessors, (48), 44 states have call successors, (48) [2022-07-22 22:23:09,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 292 transitions. [2022-07-22 22:23:09,349 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 292 transitions. Word has length 215 [2022-07-22 22:23:09,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:23:09,350 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 292 transitions. [2022-07-22 22:23:09,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-07-22 22:23:09,351 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 292 transitions. [2022-07-22 22:23:09,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-07-22 22:23:09,352 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:23:09,352 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-22 22:23:09,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-22 22:23:09,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-22 22:23:09,565 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:23:09,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:23:09,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1244691977, now seen corresponding path program 1 times [2022-07-22 22:23:09,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:23:09,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954895692] [2022-07-22 22:23:09,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:23:09,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:23:09,623 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:23:09,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1240848751] [2022-07-22 22:23:09,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:23:09,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:23:09,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:23:09,625 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) [2022-07-22 22:23:09,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-22 22:23:10,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:10,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 2996 conjuncts, 91 conjunts are in the unsatisfiable core [2022-07-22 22:23:10,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:23:10,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:10,426 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-07-22 22:23:10,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:10,431 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-07-22 22:23:11,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:11,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:11,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:11,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:11,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:11,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:11,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:11,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:11,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:11,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:11,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:11,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:11,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:11,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:11,762 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 22:23:11,765 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-22 22:23:11,766 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 78 [2022-07-22 22:23:11,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:11,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:11,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:11,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:11,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:11,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:11,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:11,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:11,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:11,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:11,801 INFO L356 Elim1Store]: treesize reduction 252, result has 4.2 percent of original size [2022-07-22 22:23:11,801 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 78 [2022-07-22 22:23:19,753 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 115 proven. 5 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-07-22 22:23:19,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:23:22,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:23:22,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954895692] [2022-07-22 22:23:22,695 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:23:22,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240848751] [2022-07-22 22:23:22,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240848751] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:23:22,695 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:23:22,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2022-07-22 22:23:22,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791309998] [2022-07-22 22:23:22,696 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 22:23:22,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-22 22:23:22,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:23:22,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-22 22:23:22,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1065, Unknown=0, NotChecked=0, Total=1190 [2022-07-22 22:23:22,697 INFO L87 Difference]: Start difference. First operand 244 states and 292 transitions. Second operand has 26 states, 22 states have (on average 4.5) internal successors, (99), 24 states have internal predecessors, (99), 12 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2022-07-22 22:23:23,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:23:23,661 INFO L93 Difference]: Finished difference Result 335 states and 405 transitions. [2022-07-22 22:23:23,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-22 22:23:23,662 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 4.5) internal successors, (99), 24 states have internal predecessors, (99), 12 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) Word has length 221 [2022-07-22 22:23:23,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:23:23,664 INFO L225 Difference]: With dead ends: 335 [2022-07-22 22:23:23,664 INFO L226 Difference]: Without dead ends: 255 [2022-07-22 22:23:23,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 205 SyntacticMatches, 6 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=197, Invalid=1783, Unknown=0, NotChecked=0, Total=1980 [2022-07-22 22:23:23,665 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 206 mSDsluCounter, 2010 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 467 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 22:23:23,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 2200 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 422 Invalid, 0 Unknown, 467 Unchecked, 0.6s Time] [2022-07-22 22:23:23,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-07-22 22:23:23,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 248. [2022-07-22 22:23:23,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 171 states have (on average 1.1812865497076024) internal successors, (202), 174 states have internal predecessors, (202), 45 states have call successors, (45), 28 states have call predecessors, (45), 31 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2022-07-22 22:23:23,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 296 transitions. [2022-07-22 22:23:23,681 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 296 transitions. Word has length 221 [2022-07-22 22:23:23,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:23:23,681 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 296 transitions. [2022-07-22 22:23:23,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 4.5) internal successors, (99), 24 states have internal predecessors, (99), 12 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2022-07-22 22:23:23,682 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 296 transitions. [2022-07-22 22:23:23,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-07-22 22:23:23,683 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:23:23,684 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 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] [2022-07-22 22:23:23,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-07-22 22:23:23,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-22 22:23:23,911 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:23:23,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:23:23,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1831497991, now seen corresponding path program 1 times [2022-07-22 22:23:23,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:23:23,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795336185] [2022-07-22 22:23:23,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:23:23,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:23:23,968 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:23:23,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1908605465] [2022-07-22 22:23:23,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:23:23,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:23:23,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:23:23,970 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:23:23,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-22 22:23:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:24,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 2991 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-22 22:23:24,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:23:25,453 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((aws_hash_iter_is_valid_~iter.offset Int) (aws_hash_iter_is_valid_~iter.base Int)) (not (= (select (select |c_#memory_$Pointer$.offset| aws_hash_iter_is_valid_~iter.base) aws_hash_iter_is_valid_~iter.offset) 0))) (exists ((aws_hash_iter_is_valid_~iter.offset Int) (aws_hash_iter_is_valid_~iter.base Int)) (not (= (select (select |c_#memory_$Pointer$.base| aws_hash_iter_is_valid_~iter.base) aws_hash_iter_is_valid_~iter.offset) 0)))) is different from true [2022-07-22 22:23:30,205 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2022-07-22 22:23:30,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:23:30,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:23:30,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795336185] [2022-07-22 22:23:30,206 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:23:30,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908605465] [2022-07-22 22:23:30,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908605465] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:23:30,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:23:30,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 22:23:30,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657751183] [2022-07-22 22:23:30,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:23:30,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 22:23:30,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:23:30,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 22:23:30,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=22, Unknown=1, NotChecked=8, Total=42 [2022-07-22 22:23:30,208 INFO L87 Difference]: Start difference. First operand 248 states and 296 transitions. Second operand has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-22 22:23:30,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:23:30,298 INFO L93 Difference]: Finished difference Result 348 states and 426 transitions. [2022-07-22 22:23:30,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 22:23:30,299 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 221 [2022-07-22 22:23:30,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:23:30,301 INFO L225 Difference]: With dead ends: 348 [2022-07-22 22:23:30,301 INFO L226 Difference]: Without dead ends: 243 [2022-07-22 22:23:30,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=11, Invalid=22, Unknown=1, NotChecked=8, Total=42 [2022-07-22 22:23:30,302 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 0 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 303 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:23:30,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 913 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 303 Unchecked, 0.1s Time] [2022-07-22 22:23:30,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-07-22 22:23:30,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 241. [2022-07-22 22:23:30,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 165 states have (on average 1.1757575757575758) internal successors, (194), 167 states have internal predecessors, (194), 45 states have call successors, (45), 28 states have call predecessors, (45), 30 states have return successors, (48), 45 states have call predecessors, (48), 44 states have call successors, (48) [2022-07-22 22:23:30,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 287 transitions. [2022-07-22 22:23:30,315 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 287 transitions. Word has length 221 [2022-07-22 22:23:30,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:23:30,316 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 287 transitions. [2022-07-22 22:23:30,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-22 22:23:30,316 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 287 transitions. [2022-07-22 22:23:30,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-07-22 22:23:30,317 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:23:30,318 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-22 22:23:30,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-07-22 22:23:30,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:23:30,531 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:23:30,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:23:30,532 INFO L85 PathProgramCache]: Analyzing trace with hash -359144008, now seen corresponding path program 1 times [2022-07-22 22:23:30,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:23:30,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599523081] [2022-07-22 22:23:30,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:23:30,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:23:30,586 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:23:30,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [300336577] [2022-07-22 22:23:30,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:23:30,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:23:30,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:23:30,589 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:23:30,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-22 22:23:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:31,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 3008 conjuncts, 95 conjunts are in the unsatisfiable core [2022-07-22 22:23:31,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:23:31,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:31,392 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-07-22 22:23:31,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:31,397 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-07-22 22:23:33,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:33,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:33,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:33,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:33,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:33,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:33,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:33,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:33,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:33,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:33,298 INFO L356 Elim1Store]: treesize reduction 252, result has 4.2 percent of original size [2022-07-22 22:23:33,299 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 78 [2022-07-22 22:23:33,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:33,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:33,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:33,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:33,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:33,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:33,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:33,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:33,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:33,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:33,316 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-22 22:23:33,317 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 78 [2022-07-22 22:23:36,645 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 115 proven. 5 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-07-22 22:23:36,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:23:39,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:23:39,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599523081] [2022-07-22 22:23:39,622 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:23:39,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300336577] [2022-07-22 22:23:39,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300336577] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:23:39,623 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:23:39,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2022-07-22 22:23:39,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236935994] [2022-07-22 22:23:39,623 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 22:23:39,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-22 22:23:39,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:23:39,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-22 22:23:39,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1131, Unknown=0, NotChecked=0, Total=1260 [2022-07-22 22:23:39,624 INFO L87 Difference]: Start difference. First operand 241 states and 287 transitions. Second operand has 27 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 24 states have internal predecessors, (100), 12 states have call successors, (31), 6 states have call predecessors, (31), 7 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2022-07-22 22:23:40,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:23:40,490 INFO L93 Difference]: Finished difference Result 329 states and 401 transitions. [2022-07-22 22:23:40,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-22 22:23:40,491 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 24 states have internal predecessors, (100), 12 states have call successors, (31), 6 states have call predecessors, (31), 7 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) Word has length 222 [2022-07-22 22:23:40,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:23:40,493 INFO L225 Difference]: With dead ends: 329 [2022-07-22 22:23:40,493 INFO L226 Difference]: Without dead ends: 250 [2022-07-22 22:23:40,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 207 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=197, Invalid=1873, Unknown=0, NotChecked=0, Total=2070 [2022-07-22 22:23:40,494 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 212 mSDsluCounter, 1944 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 2132 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 401 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 22:23:40,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 2132 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 314 Invalid, 0 Unknown, 401 Unchecked, 0.5s Time] [2022-07-22 22:23:40,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-07-22 22:23:40,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 246. [2022-07-22 22:23:40,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 170 states have (on average 1.1705882352941177) internal successors, (199), 172 states have internal predecessors, (199), 45 states have call successors, (45), 28 states have call predecessors, (45), 30 states have return successors, (48), 45 states have call predecessors, (48), 44 states have call successors, (48) [2022-07-22 22:23:40,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 292 transitions. [2022-07-22 22:23:40,508 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 292 transitions. Word has length 222 [2022-07-22 22:23:40,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:23:40,508 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 292 transitions. [2022-07-22 22:23:40,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 24 states have internal predecessors, (100), 12 states have call successors, (31), 6 states have call predecessors, (31), 7 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2022-07-22 22:23:40,509 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 292 transitions. [2022-07-22 22:23:40,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-07-22 22:23:40,510 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:23:40,510 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1] [2022-07-22 22:23:40,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-22 22:23:40,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-22 22:23:40,724 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:23:40,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:23:40,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1437112506, now seen corresponding path program 1 times [2022-07-22 22:23:40,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:23:40,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21957205] [2022-07-22 22:23:40,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:23:40,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:23:40,781 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:23:40,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [11048216] [2022-07-22 22:23:40,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:23:40,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:23:40,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:23:40,783 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:23:40,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-22 22:23:41,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:23:41,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 3007 conjuncts, 93 conjunts are in the unsatisfiable core [2022-07-22 22:23:41,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:23:41,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:41,668 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-07-22 22:23:41,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:41,673 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-07-22 22:23:47,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:47,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:47,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:47,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:47,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:47,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:47,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:47,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:47,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:47,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:47,988 INFO L356 Elim1Store]: treesize reduction 252, result has 4.2 percent of original size [2022-07-22 22:23:47,988 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 78 [2022-07-22 22:23:47,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:47,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:47,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:47,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:47,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:47,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:47,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:47,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:48,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:48,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:23:48,005 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-22 22:23:48,005 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 78 [2022-07-22 22:23:55,691 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 74 proven. 5 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-07-22 22:23:55,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:23:56,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:23:56,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21957205] [2022-07-22 22:23:56,899 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:23:56,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11048216] [2022-07-22 22:23:56,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11048216] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:23:56,900 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:23:56,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2022-07-22 22:23:56,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478449186] [2022-07-22 22:23:56,900 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 22:23:56,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-22 22:23:56,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:23:56,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-22 22:23:56,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1209, Unknown=4, NotChecked=0, Total=1332 [2022-07-22 22:23:56,901 INFO L87 Difference]: Start difference. First operand 246 states and 292 transitions. Second operand has 28 states, 23 states have (on average 4.217391304347826) internal successors, (97), 24 states have internal predecessors, (97), 13 states have call successors, (31), 6 states have call predecessors, (31), 7 states have return successors, (29), 11 states have call predecessors, (29), 12 states have call successors, (29) [2022-07-22 22:24:04,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:24:04,477 INFO L93 Difference]: Finished difference Result 400 states and 487 transitions. [2022-07-22 22:24:04,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-07-22 22:24:04,478 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 23 states have (on average 4.217391304347826) internal successors, (97), 24 states have internal predecessors, (97), 13 states have call successors, (31), 6 states have call predecessors, (31), 7 states have return successors, (29), 11 states have call predecessors, (29), 12 states have call successors, (29) Word has length 225 [2022-07-22 22:24:04,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:24:04,480 INFO L225 Difference]: With dead ends: 400 [2022-07-22 22:24:04,480 INFO L226 Difference]: Without dead ends: 333 [2022-07-22 22:24:04,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 215 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1016 ImplicationChecksByTransitivity, 20.2s TimeCoverageRelationStatistics Valid=383, Invalid=4168, Unknown=5, NotChecked=0, Total=4556 [2022-07-22 22:24:04,482 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 277 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 2030 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 1385 SdHoareTripleChecker+Invalid, 2808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 2030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 619 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 22:24:04,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 1385 Invalid, 2808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 2030 Invalid, 0 Unknown, 619 Unchecked, 1.6s Time] [2022-07-22 22:24:04,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-07-22 22:24:04,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 300. [2022-07-22 22:24:04,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 212 states have (on average 1.1981132075471699) internal successors, (254), 214 states have internal predecessors, (254), 50 states have call successors, (50), 35 states have call predecessors, (50), 37 states have return successors, (55), 50 states have call predecessors, (55), 49 states have call successors, (55) [2022-07-22 22:24:04,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 359 transitions. [2022-07-22 22:24:04,498 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 359 transitions. Word has length 225 [2022-07-22 22:24:04,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:24:04,499 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 359 transitions. [2022-07-22 22:24:04,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 23 states have (on average 4.217391304347826) internal successors, (97), 24 states have internal predecessors, (97), 13 states have call successors, (31), 6 states have call predecessors, (31), 7 states have return successors, (29), 11 states have call predecessors, (29), 12 states have call successors, (29) [2022-07-22 22:24:04,499 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 359 transitions. [2022-07-22 22:24:04,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-22 22:24:04,500 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:24:04,501 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1] [2022-07-22 22:24:04,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-22 22:24:04,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-22 22:24:04,727 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:24:04,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:24:04,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1338459295, now seen corresponding path program 1 times [2022-07-22 22:24:04,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:24:04,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539975498] [2022-07-22 22:24:04,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:24:04,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:24:04,780 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:24:04,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1938633638] [2022-07-22 22:24:04,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:24:04,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:24:04,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:24:04,782 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:24:04,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-22 22:24:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:05,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 3019 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-22 22:24:05,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:24:05,492 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2022-07-22 22:24:05,492 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:24:05,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:24:05,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539975498] [2022-07-22 22:24:05,492 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:24:05,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938633638] [2022-07-22 22:24:05,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938633638] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:24:05,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:24:05,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 22:24:05,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420163706] [2022-07-22 22:24:05,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:24:05,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:24:05,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:24:05,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:24:05,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:24:05,495 INFO L87 Difference]: Start difference. First operand 300 states and 359 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 1 states have call successors, (27) [2022-07-22 22:24:05,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:24:05,521 INFO L93 Difference]: Finished difference Result 417 states and 509 transitions. [2022-07-22 22:24:05,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:24:05,522 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 1 states have call successors, (27) Word has length 226 [2022-07-22 22:24:05,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:24:05,524 INFO L225 Difference]: With dead ends: 417 [2022-07-22 22:24:05,524 INFO L226 Difference]: Without dead ends: 289 [2022-07-22 22:24:05,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:24:05,526 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 0 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:24:05,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 813 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:24:05,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-07-22 22:24:05,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2022-07-22 22:24:05,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 203 states have (on average 1.1970443349753694) internal successors, (243), 203 states have internal predecessors, (243), 50 states have call successors, (50), 35 states have call predecessors, (50), 35 states have return successors, (53), 50 states have call predecessors, (53), 49 states have call successors, (53) [2022-07-22 22:24:05,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 346 transitions. [2022-07-22 22:24:05,544 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 346 transitions. Word has length 226 [2022-07-22 22:24:05,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:24:05,544 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 346 transitions. [2022-07-22 22:24:05,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 1 states have call successors, (27) [2022-07-22 22:24:05,545 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 346 transitions. [2022-07-22 22:24:05,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-07-22 22:24:05,546 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:24:05,546 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:24:05,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-22 22:24:05,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:24:05,753 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:24:05,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:24:05,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1656342513, now seen corresponding path program 1 times [2022-07-22 22:24:05,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:24:05,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779036737] [2022-07-22 22:24:05,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:24:05,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:24:05,806 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:24:05,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1138387314] [2022-07-22 22:24:05,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:24:05,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:24:05,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:24:05,808 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:24:05,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-22 22:24:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:06,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 3050 conjuncts, 349 conjunts are in the unsatisfiable core [2022-07-22 22:24:06,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:24:06,975 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:24:07,141 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-22 22:24:07,142 INFO L390 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 [2022-07-22 22:24:07,168 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-22 22:24:07,478 INFO L356 Elim1Store]: treesize reduction 184, result has 21.7 percent of original size [2022-07-22 22:24:07,478 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 93 treesize of output 123 [2022-07-22 22:24:07,777 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-22 22:24:07,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:07,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:07,825 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 22 treesize of output 25 [2022-07-22 22:24:07,892 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-07-22 22:24:07,896 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-22 22:24:07,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:07,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:07,904 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 26 treesize of output 29 [2022-07-22 22:24:07,908 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:24:07,919 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-22 22:24:09,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:09,612 INFO L356 Elim1Store]: treesize reduction 126, result has 25.9 percent of original size [2022-07-22 22:24:09,613 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 38 treesize of output 65 [2022-07-22 22:24:09,764 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 32 [2022-07-22 22:24:09,770 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 5 [2022-07-22 22:24:09,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:09,779 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-07-22 22:24:09,784 INFO L390 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 7 treesize of output 3 [2022-07-22 22:24:09,882 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-22 22:24:09,980 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4250 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4250) |c_#memory_int|)) (exists ((v_ArrVal_4251 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4251) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_4249 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4249) |c_#memory_$Pointer$.base|))) is different from true [2022-07-22 22:24:10,102 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-22 22:24:10,156 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4253 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_4253) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_4252 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_4252) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_4254 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_4254) |c_#memory_int|))) is different from true [2022-07-22 22:24:10,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:10,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:10,321 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2022-07-22 22:24:10,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:10,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:10,332 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 57 [2022-07-22 22:24:10,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:10,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:10,342 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 33 [2022-07-22 22:24:10,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:10,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:10,376 INFO L356 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-07-22 22:24:10,377 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 28 [2022-07-22 22:24:11,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:11,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:11,982 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 41 [2022-07-22 22:24:11,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:12,000 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-07-22 22:24:12,000 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 73 [2022-07-22 22:24:12,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:12,015 INFO L356 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-07-22 22:24:12,015 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 58 [2022-07-22 22:24:12,021 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-07-22 22:24:41,348 INFO L356 Elim1Store]: treesize reduction 12, result has 90.7 percent of original size [2022-07-22 22:24:41,348 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 330 treesize of output 350 [2022-07-22 22:24:55,919 WARN L233 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 239 DAG size of output: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 22:25:19,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:25:19,560 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 22:25:19,569 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 22:25:19,569 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 84 [2022-07-22 22:25:19,747 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 97 proven. 176 refuted. 4 times theorem prover too weak. 8 trivial. 6 not checked. [2022-07-22 22:25:19,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:25:20,280 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4259 (Array Int Int))) (< 0 (mod (select (select (store |c_#memory_int| |c_aws_hash_iter_begin_~#iter~1.base| v_ArrVal_4259) c_aws_hash_iter_begin_~state~11.base) (+ 40 c_aws_hash_iter_begin_~state~11.offset)) 18446744073709551616))) is different from false [2022-07-22 22:25:20,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:25:20,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779036737] [2022-07-22 22:25:20,310 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:25:20,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138387314] [2022-07-22 22:25:20,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138387314] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:25:20,310 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:25:20,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2022-07-22 22:25:20,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190161999] [2022-07-22 22:25:20,311 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 22:25:20,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-07-22 22:25:20,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:25:20,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-07-22 22:25:20,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=3424, Unknown=30, NotChecked=360, Total=4032 [2022-07-22 22:25:20,313 INFO L87 Difference]: Start difference. First operand 289 states and 346 transitions. Second operand has 59 states, 50 states have (on average 3.02) internal successors, (151), 49 states have internal predecessors, (151), 26 states have call successors, (39), 13 states have call predecessors, (39), 19 states have return successors, (36), 25 states have call predecessors, (36), 25 states have call successors, (36) [2022-07-22 22:26:25,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:26:25,875 INFO L93 Difference]: Finished difference Result 590 states and 701 transitions. [2022-07-22 22:26:25,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-07-22 22:26:25,875 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 50 states have (on average 3.02) internal successors, (151), 49 states have internal predecessors, (151), 26 states have call successors, (39), 13 states have call predecessors, (39), 19 states have return successors, (36), 25 states have call predecessors, (36), 25 states have call successors, (36) Word has length 232 [2022-07-22 22:26:25,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:26:25,878 INFO L225 Difference]: With dead ends: 590 [2022-07-22 22:26:25,878 INFO L226 Difference]: Without dead ends: 437 [2022-07-22 22:26:25,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 227 SyntacticMatches, 21 SemanticMatches, 89 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 2798 ImplicationChecksByTransitivity, 128.6s TimeCoverageRelationStatistics Valid=403, Invalid=7192, Unknown=73, NotChecked=522, Total=8190 [2022-07-22 22:26:25,881 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 125 mSDsluCounter, 1652 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 1858 SdHoareTripleChecker+Invalid, 4454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3280 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 22:26:25,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 1858 Invalid, 4454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1112 Invalid, 0 Unknown, 3280 Unchecked, 1.3s Time] [2022-07-22 22:26:25,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-07-22 22:26:25,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 430. [2022-07-22 22:26:25,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 299 states have (on average 1.1505016722408026) internal successors, (344), 300 states have internal predecessors, (344), 74 states have call successors, (74), 56 states have call predecessors, (74), 56 states have return successors, (85), 73 states have call predecessors, (85), 73 states have call successors, (85) [2022-07-22 22:26:25,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 503 transitions. [2022-07-22 22:26:25,909 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 503 transitions. Word has length 232 [2022-07-22 22:26:25,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:26:25,909 INFO L495 AbstractCegarLoop]: Abstraction has 430 states and 503 transitions. [2022-07-22 22:26:25,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 50 states have (on average 3.02) internal successors, (151), 49 states have internal predecessors, (151), 26 states have call successors, (39), 13 states have call predecessors, (39), 19 states have return successors, (36), 25 states have call predecessors, (36), 25 states have call successors, (36) [2022-07-22 22:26:25,910 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 503 transitions. [2022-07-22 22:26:25,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-07-22 22:26:25,911 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:26:25,912 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:26:25,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-22 22:26:26,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:26:26,131 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:26:26,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:26:26,132 INFO L85 PathProgramCache]: Analyzing trace with hash 86404045, now seen corresponding path program 1 times [2022-07-22 22:26:26,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:26:26,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681821176] [2022-07-22 22:26:26,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:26:26,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:26:26,216 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:26:26,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [340748114] [2022-07-22 22:26:26,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:26:26,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:26:26,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:26:26,218 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:26:26,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-22 22:26:30,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:26:30,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 3061 conjuncts, 294 conjunts are in the unsatisfiable core [2022-07-22 22:26:30,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:26:30,653 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:26:30,898 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-22 22:26:30,898 INFO L390 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 [2022-07-22 22:26:30,933 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-22 22:26:31,233 INFO L356 Elim1Store]: treesize reduction 112, result has 28.7 percent of original size [2022-07-22 22:26:31,234 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 142 treesize of output 166 [2022-07-22 22:26:31,431 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-22 22:26:31,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:26:31,499 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-07-22 22:26:31,556 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-07-22 22:26:31,563 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-07-22 22:26:31,567 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-22 22:26:31,571 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:26:31,583 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-22 22:26:33,572 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-22 22:26:33,573 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-07-22 22:26:33,784 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 46 [2022-07-22 22:26:33,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:26:33,793 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 13 [2022-07-22 22:26:33,805 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-07-22 22:26:33,809 INFO L390 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 7 treesize of output 3 [2022-07-22 22:26:33,946 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-22 22:26:34,071 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4533 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4533))) (exists ((v_ArrVal_4534 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4534))) (exists ((v_ArrVal_4532 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4532)))) is different from true [2022-07-22 22:26:34,223 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-22 22:26:34,292 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4535 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_4535) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_4536 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_4536) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_4537 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_4537) |c_#memory_int|))) is different from true [2022-07-22 22:26:34,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:26:34,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:26:34,483 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 69 [2022-07-22 22:26:34,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:26:34,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:26:34,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:26:34,497 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 56 [2022-07-22 22:26:34,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:26:34,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:26:34,507 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 69 [2022-07-22 22:26:34,544 INFO L356 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-07-22 22:26:34,544 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2022-07-22 22:26:36,599 INFO L390 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 80 treesize of output 56 [2022-07-22 22:26:36,606 INFO L390 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 57 treesize of output 37 [2022-07-22 22:26:36,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:26:36,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:26:36,818 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2022-07-22 22:26:36,823 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13