./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_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 edc61b8c285d87a6706f10a0369a5dd380942e398b4b2231a7f494f856622f23 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 09:43:47,415 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 09:43:47,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 09:43:47,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 09:43:47,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 09:43:47,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 09:43:47,471 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 09:43:47,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 09:43:47,486 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 09:43:47,491 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 09:43:47,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 09:43:47,497 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 09:43:47,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 09:43:47,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 09:43:47,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 09:43:47,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 09:43:47,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 09:43:47,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 09:43:47,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 09:43:47,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 09:43:47,515 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 09:43:47,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 09:43:47,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 09:43:47,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 09:43:47,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 09:43:47,530 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 09:43:47,535 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 09:43:47,536 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 09:43:47,537 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 09:43:47,537 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 09:43:47,538 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 09:43:47,538 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 09:43:47,541 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 09:43:47,542 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 09:43:47,543 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 09:43:47,544 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 09:43:47,545 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 09:43:47,545 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 09:43:47,545 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 09:43:47,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 09:43:47,546 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 09:43:47,548 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 09:43:47,557 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 09:43:47,593 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 09:43:47,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 09:43:47,594 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 09:43:47,594 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 09:43:47,595 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 09:43:47,595 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 09:43:47,596 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 09:43:47,596 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 09:43:47,597 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 09:43:47,598 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 09:43:47,598 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 09:43:47,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 09:43:47,598 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 09:43:47,598 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 09:43:47,599 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 09:43:47,599 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 09:43:47,599 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 09:43:47,600 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 09:43:47,600 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 09:43:47,600 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 09:43:47,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 09:43:47,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:43:47,601 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 09:43:47,601 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 09:43:47,601 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 09:43:47,602 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 09:43:47,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 09:43:47,602 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 09:43:47,602 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 09:43:47,602 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 09:43:47,603 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> edc61b8c285d87a6706f10a0369a5dd380942e398b4b2231a7f494f856622f23 [2022-07-21 09:43:47,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 09:43:47,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 09:43:47,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 09:43:47,993 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 09:43:47,995 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 09:43:47,997 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i [2022-07-21 09:43:48,061 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4864ff356/23f7e1f0c22f4fc78b80366699fc120c/FLAGa500ad16b [2022-07-21 09:43:48,844 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 09:43:48,845 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i [2022-07-21 09:43:48,887 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4864ff356/23f7e1f0c22f4fc78b80366699fc120c/FLAGa500ad16b [2022-07-21 09:43:49,061 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4864ff356/23f7e1f0c22f4fc78b80366699fc120c [2022-07-21 09:43:49,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 09:43:49,065 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 09:43:49,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 09:43:49,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 09:43:49,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 09:43:49,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:43:49" (1/1) ... [2022-07-21 09:43:49,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ba6a349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:43:49, skipping insertion in model container [2022-07-21 09:43:49,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:43:49" (1/1) ... [2022-07-21 09:43:49,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 09:43:49,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 09:43:49,503 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i[4503,4516] [2022-07-21 09:43:49,512 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i[4563,4576] [2022-07-21 09:43:50,521 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:50,522 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:50,535 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:50,536 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:50,539 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:50,556 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:50,558 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:50,561 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:50,564 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:50,568 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:50,570 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:50,572 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:50,573 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:51,002 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:43:51,003 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:43:51,004 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:43:51,006 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:43:51,014 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:43:51,015 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:43:51,018 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:43:51,019 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:43:51,019 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:43:51,020 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:43:51,205 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:43:51,616 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:51,617 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:51,642 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:51,644 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:51,651 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:51,652 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:51,670 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:51,671 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:51,672 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:51,673 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:51,673 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:51,674 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:51,674 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:51,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:43:51,760 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 09:43:51,784 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i[4503,4516] [2022-07-21 09:43:51,784 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i[4563,4576] [2022-07-21 09:43:51,844 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:51,844 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:51,845 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:51,845 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:51,845 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:51,852 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:51,853 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:51,855 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:51,855 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:51,856 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:51,856 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:51,857 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:51,857 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:51,883 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:43:51,884 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:43:51,885 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:43:51,885 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:43:51,886 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:43:51,886 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:43:51,887 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:43:51,887 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:43:51,887 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:43:51,890 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:43:51,909 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:43:52,047 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:52,048 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:52,054 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:52,055 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:52,069 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:52,070 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:52,078 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:52,079 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:52,079 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:52,080 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:52,080 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:52,081 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:52,082 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:43:52,113 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:43:52,463 INFO L208 MainTranslator]: Completed translation [2022-07-21 09:43:52,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:43:52 WrapperNode [2022-07-21 09:43:52,468 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 09:43:52,469 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 09:43:52,469 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 09:43:52,469 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 09:43:52,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:43:52" (1/1) ... [2022-07-21 09:43:52,632 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:43:52" (1/1) ... [2022-07-21 09:43:52,732 INFO L137 Inliner]: procedures = 775, calls = 2429, calls flagged for inlining = 66, calls inlined = 11, statements flattened = 779 [2022-07-21 09:43:52,733 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 09:43:52,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 09:43:52,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 09:43:52,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 09:43:52,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:43:52" (1/1) ... [2022-07-21 09:43:52,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:43:52" (1/1) ... [2022-07-21 09:43:52,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:43:52" (1/1) ... [2022-07-21 09:43:52,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:43:52" (1/1) ... [2022-07-21 09:43:52,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:43:52" (1/1) ... [2022-07-21 09:43:52,782 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:43:52" (1/1) ... [2022-07-21 09:43:52,789 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:43:52" (1/1) ... [2022-07-21 09:43:52,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 09:43:52,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 09:43:52,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 09:43:52,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 09:43:52,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:43:52" (1/1) ... [2022-07-21 09:43:52,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:43:52,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:43:52,832 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) [2022-07-21 09:43:52,854 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 [2022-07-21 09:43:52,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-07-21 09:43:52,870 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-21 09:43:52,870 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-21 09:43:52,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 09:43:52,871 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-21 09:43:52,871 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-21 09:43:52,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-21 09:43:52,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-21 09:43:52,871 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2022-07-21 09:43:52,871 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2022-07-21 09:43:52,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 09:43:52,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 09:43:52,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 09:43:52,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 09:43:52,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 09:43:52,872 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-21 09:43:52,872 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-21 09:43:52,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 09:43:52,873 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-07-21 09:43:52,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-07-21 09:43:52,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 09:43:52,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 09:43:52,873 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2022-07-21 09:43:52,873 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2022-07-21 09:43:52,873 INFO L130 BoogieDeclarations]: Found specification of procedure s_update_template_size [2022-07-21 09:43:52,874 INFO L138 BoogieDeclarations]: Found implementation of procedure s_update_template_size [2022-07-21 09:43:52,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 09:43:52,874 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-07-21 09:43:52,874 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-07-21 09:43:52,874 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_calloc [2022-07-21 09:43:52,874 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_calloc [2022-07-21 09:43:52,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-07-21 09:43:52,875 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2022-07-21 09:43:52,875 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2022-07-21 09:43:52,875 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 09:43:52,875 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 09:43:52,875 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2022-07-21 09:43:52,875 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2022-07-21 09:43:52,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 09:43:52,876 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-21 09:43:52,876 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-21 09:43:52,876 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-21 09:43:52,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-21 09:43:52,876 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-07-21 09:43:52,876 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-07-21 09:43:52,876 INFO L130 BoogieDeclarations]: Found specification of procedure s_alloc_state [2022-07-21 09:43:52,877 INFO L138 BoogieDeclarations]: Found implementation of procedure s_alloc_state [2022-07-21 09:43:52,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 09:43:53,182 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 09:43:53,184 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 09:43:54,302 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !true; [2022-07-21 09:43:54,322 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 09:43:54,337 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 09:43:54,337 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-21 09:43:54,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:43:54 BoogieIcfgContainer [2022-07-21 09:43:54,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 09:43:54,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 09:43:54,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 09:43:54,345 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 09:43:54,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 09:43:49" (1/3) ... [2022-07-21 09:43:54,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f7b9593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:43:54, skipping insertion in model container [2022-07-21 09:43:54,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:43:52" (2/3) ... [2022-07-21 09:43:54,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f7b9593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:43:54, skipping insertion in model container [2022-07-21 09:43:54,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:43:54" (3/3) ... [2022-07-21 09:43:54,349 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_init_unbounded_harness.i [2022-07-21 09:43:54,362 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 09:43:54,363 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 09:43:54,432 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 09:43:54,443 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@7dfe7bac, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@774458c5 [2022-07-21 09:43:54,444 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 09:43:54,449 INFO L276 IsEmpty]: Start isEmpty. Operand has 156 states, 104 states have (on average 1.2211538461538463) internal successors, (127), 104 states have internal predecessors, (127), 34 states have call successors, (34), 17 states have call predecessors, (34), 17 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-07-21 09:43:54,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 09:43:54,458 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:43:54,458 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:43:54,459 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:43:54,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:43:54,463 INFO L85 PathProgramCache]: Analyzing trace with hash -367870538, now seen corresponding path program 1 times [2022-07-21 09:43:54,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:43:54,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681311403] [2022-07-21 09:43:54,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:43:54,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:43:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:54,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:43:54,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:54,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:43:54,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:55,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 09:43:55,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:55,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 09:43:55,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:55,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 09:43:55,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:55,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 09:43:55,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:55,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:43:55,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:55,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 09:43:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:55,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:43:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:55,128 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-21 09:43:55,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:43:55,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681311403] [2022-07-21 09:43:55,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681311403] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:43:55,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:43:55,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 09:43:55,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052164451] [2022-07-21 09:43:55,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:43:55,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 09:43:55,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:43:55,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 09:43:55,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 09:43:55,170 INFO L87 Difference]: Start difference. First operand has 156 states, 104 states have (on average 1.2211538461538463) internal successors, (127), 104 states have internal predecessors, (127), 34 states have call successors, (34), 17 states have call predecessors, (34), 17 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-21 09:43:55,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:43:55,754 INFO L93 Difference]: Finished difference Result 309 states and 399 transitions. [2022-07-21 09:43:55,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 09:43:55,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 65 [2022-07-21 09:43:55,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:43:55,772 INFO L225 Difference]: With dead ends: 309 [2022-07-21 09:43:55,773 INFO L226 Difference]: Without dead ends: 152 [2022-07-21 09:43:55,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 09:43:55,785 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 40 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 09:43:55,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 232 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 09:43:55,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-07-21 09:43:55,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 149. [2022-07-21 09:43:55,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 97 states have (on average 1.2061855670103092) internal successors, (117), 98 states have internal predecessors, (117), 34 states have call successors, (34), 17 states have call predecessors, (34), 17 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-07-21 09:43:55,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 184 transitions. [2022-07-21 09:43:55,852 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 184 transitions. Word has length 65 [2022-07-21 09:43:55,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:43:55,854 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 184 transitions. [2022-07-21 09:43:55,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-21 09:43:55,854 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 184 transitions. [2022-07-21 09:43:55,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 09:43:55,857 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:43:55,857 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:43:55,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 09:43:55,858 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:43:55,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:43:55,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1265843662, now seen corresponding path program 1 times [2022-07-21 09:43:55,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:43:55,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445308667] [2022-07-21 09:43:55,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:43:55,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:43:55,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:56,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:43:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:56,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:43:56,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:56,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 09:43:56,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:56,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 09:43:56,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:56,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 09:43:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:56,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 09:43:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:56,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:43:56,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:56,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 09:43:56,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:56,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:43:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:56,215 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-21 09:43:56,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:43:56,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445308667] [2022-07-21 09:43:56,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445308667] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:43:56,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:43:56,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:43:56,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901979509] [2022-07-21 09:43:56,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:43:56,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:43:56,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:43:56,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:43:56,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:43:56,219 INFO L87 Difference]: Start difference. First operand 149 states and 184 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-21 09:43:56,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:43:56,823 INFO L93 Difference]: Finished difference Result 282 states and 341 transitions. [2022-07-21 09:43:56,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:43:56,824 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 65 [2022-07-21 09:43:56,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:43:56,826 INFO L225 Difference]: With dead ends: 282 [2022-07-21 09:43:56,827 INFO L226 Difference]: Without dead ends: 158 [2022-07-21 09:43:56,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:43:56,828 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 45 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 09:43:56,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 458 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 09:43:56,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-07-21 09:43:56,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 151. [2022-07-21 09:43:56,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 99 states have (on average 1.202020202020202) internal successors, (119), 100 states have internal predecessors, (119), 34 states have call successors, (34), 17 states have call predecessors, (34), 17 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-07-21 09:43:56,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 186 transitions. [2022-07-21 09:43:56,844 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 186 transitions. Word has length 65 [2022-07-21 09:43:56,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:43:56,844 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 186 transitions. [2022-07-21 09:43:56,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-21 09:43:56,845 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 186 transitions. [2022-07-21 09:43:56,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-21 09:43:56,846 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:43:56,846 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:43:56,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 09:43:56,847 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:43:56,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:43:56,847 INFO L85 PathProgramCache]: Analyzing trace with hash 970889079, now seen corresponding path program 1 times [2022-07-21 09:43:56,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:43:56,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422010349] [2022-07-21 09:43:56,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:43:56,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:43:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:57,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:43:57,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:57,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:43:57,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:57,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 09:43:57,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:57,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 09:43:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:57,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 09:43:57,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:57,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 09:43:57,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:57,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:43:57,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:57,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 09:43:57,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:57,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 09:43:57,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:57,193 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-21 09:43:57,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:43:57,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422010349] [2022-07-21 09:43:57,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422010349] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:43:57,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:43:57,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:43:57,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446135745] [2022-07-21 09:43:57,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:43:57,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:43:57,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:43:57,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:43:57,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:43:57,197 INFO L87 Difference]: Start difference. First operand 151 states and 186 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-21 09:43:57,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:43:57,713 INFO L93 Difference]: Finished difference Result 186 states and 224 transitions. [2022-07-21 09:43:57,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:43:57,713 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 67 [2022-07-21 09:43:57,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:43:57,715 INFO L225 Difference]: With dead ends: 186 [2022-07-21 09:43:57,715 INFO L226 Difference]: Without dead ends: 158 [2022-07-21 09:43:57,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:43:57,716 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 40 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 09:43:57,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 455 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 09:43:57,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-07-21 09:43:57,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 155. [2022-07-21 09:43:57,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 102 states have (on average 1.196078431372549) internal successors, (122), 103 states have internal predecessors, (122), 34 states have call successors, (34), 17 states have call predecessors, (34), 18 states have return successors, (34), 34 states have call predecessors, (34), 33 states have call successors, (34) [2022-07-21 09:43:57,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 190 transitions. [2022-07-21 09:43:57,730 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 190 transitions. Word has length 67 [2022-07-21 09:43:57,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:43:57,731 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 190 transitions. [2022-07-21 09:43:57,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-21 09:43:57,731 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 190 transitions. [2022-07-21 09:43:57,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-21 09:43:57,733 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:43:57,733 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:43:57,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 09:43:57,734 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:43:57,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:43:57,734 INFO L85 PathProgramCache]: Analyzing trace with hash 444639143, now seen corresponding path program 1 times [2022-07-21 09:43:57,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:43:57,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060930500] [2022-07-21 09:43:57,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:43:57,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:43:57,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:57,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:43:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:57,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:43:57,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:57,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 09:43:57,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:57,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 09:43:57,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:57,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 09:43:57,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:57,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 09:43:57,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:58,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:43:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:58,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 09:43:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:58,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 09:43:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:58,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 09:43:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:58,068 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-21 09:43:58,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:43:58,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060930500] [2022-07-21 09:43:58,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060930500] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:43:58,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:43:58,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 09:43:58,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849935092] [2022-07-21 09:43:58,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:43:58,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:43:58,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:43:58,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:43:58,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:43:58,071 INFO L87 Difference]: Start difference. First operand 155 states and 190 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 09:43:58,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:43:58,780 INFO L93 Difference]: Finished difference Result 232 states and 291 transitions. [2022-07-21 09:43:58,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:43:58,782 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 72 [2022-07-21 09:43:58,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:43:58,787 INFO L225 Difference]: With dead ends: 232 [2022-07-21 09:43:58,787 INFO L226 Difference]: Without dead ends: 204 [2022-07-21 09:43:58,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:43:58,792 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 131 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 09:43:58,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 481 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 09:43:58,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-07-21 09:43:58,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 151. [2022-07-21 09:43:58,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 99 states have (on average 1.1818181818181819) internal successors, (117), 100 states have internal predecessors, (117), 34 states have call successors, (34), 17 states have call predecessors, (34), 17 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-07-21 09:43:58,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 184 transitions. [2022-07-21 09:43:58,814 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 184 transitions. Word has length 72 [2022-07-21 09:43:58,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:43:58,816 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 184 transitions. [2022-07-21 09:43:58,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 09:43:58,816 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 184 transitions. [2022-07-21 09:43:58,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-21 09:43:58,824 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:43:58,825 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:43:58,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 09:43:58,825 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:43:58,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:43:58,826 INFO L85 PathProgramCache]: Analyzing trace with hash -2051156850, now seen corresponding path program 1 times [2022-07-21 09:43:58,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:43:58,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98713185] [2022-07-21 09:43:58,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:43:58,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:43:58,907 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:43:58,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1435966540] [2022-07-21 09:43:58,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:43:58,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:43:58,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:43:58,911 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) [2022-07-21 09:43:58,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 09:43:59,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:43:59,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 2363 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 09:43:59,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:43:59,501 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-21 09:43:59,501 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:43:59,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:43:59,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98713185] [2022-07-21 09:43:59,501 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:43:59,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435966540] [2022-07-21 09:43:59,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435966540] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:43:59,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:43:59,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:43:59,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784526375] [2022-07-21 09:43:59,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:43:59,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:43:59,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:43:59,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:43:59,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:43:59,504 INFO L87 Difference]: Start difference. First operand 151 states and 184 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 09:43:59,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:43:59,543 INFO L93 Difference]: Finished difference Result 255 states and 306 transitions. [2022-07-21 09:43:59,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:43:59,577 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 89 [2022-07-21 09:43:59,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:43:59,579 INFO L225 Difference]: With dead ends: 255 [2022-07-21 09:43:59,579 INFO L226 Difference]: Without dead ends: 156 [2022-07-21 09:43:59,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:43:59,580 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 2 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:43:59,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 709 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:43:59,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-07-21 09:43:59,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2022-07-21 09:43:59,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 103 states have (on average 1.174757281553398) internal successors, (121), 104 states have internal predecessors, (121), 34 states have call successors, (34), 17 states have call predecessors, (34), 18 states have return successors, (36), 34 states have call predecessors, (36), 33 states have call successors, (36) [2022-07-21 09:43:59,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 191 transitions. [2022-07-21 09:43:59,591 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 191 transitions. Word has length 89 [2022-07-21 09:43:59,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:43:59,592 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 191 transitions. [2022-07-21 09:43:59,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 09:43:59,592 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 191 transitions. [2022-07-21 09:43:59,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-21 09:43:59,594 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:43:59,594 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:43:59,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 09:43:59,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:43:59,820 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:43:59,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:43:59,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1979109813, now seen corresponding path program 1 times [2022-07-21 09:43:59,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:43:59,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206668568] [2022-07-21 09:43:59,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:43:59,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:43:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:00,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:44:00,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:00,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:44:00,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:00,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 09:44:00,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:00,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 09:44:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:00,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 09:44:00,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:00,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 09:44:00,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:00,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:44:00,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:00,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 09:44:00,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:00,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:44:00,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:00,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:00,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:00,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:00,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:00,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:00,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:44:00,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:00,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 09:44:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:00,260 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-21 09:44:00,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:44:00,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206668568] [2022-07-21 09:44:00,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206668568] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:44:00,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:44:00,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 09:44:00,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133226783] [2022-07-21 09:44:00,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:44:00,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 09:44:00,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:44:00,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 09:44:00,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:44:00,263 INFO L87 Difference]: Start difference. First operand 156 states and 191 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 09:44:01,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:44:01,011 INFO L93 Difference]: Finished difference Result 350 states and 433 transitions. [2022-07-21 09:44:01,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 09:44:01,012 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 95 [2022-07-21 09:44:01,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:44:01,013 INFO L225 Difference]: With dead ends: 350 [2022-07-21 09:44:01,013 INFO L226 Difference]: Without dead ends: 217 [2022-07-21 09:44:01,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:44:01,015 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 160 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 09:44:01,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 517 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 09:44:01,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-07-21 09:44:01,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 158. [2022-07-21 09:44:01,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 105 states have (on average 1.1714285714285715) internal successors, (123), 106 states have internal predecessors, (123), 34 states have call successors, (34), 17 states have call predecessors, (34), 18 states have return successors, (36), 34 states have call predecessors, (36), 33 states have call successors, (36) [2022-07-21 09:44:01,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 193 transitions. [2022-07-21 09:44:01,027 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 193 transitions. Word has length 95 [2022-07-21 09:44:01,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:44:01,028 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 193 transitions. [2022-07-21 09:44:01,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 09:44:01,028 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 193 transitions. [2022-07-21 09:44:01,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-21 09:44:01,029 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:44:01,030 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:44:01,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 09:44:01,030 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:44:01,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:44:01,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1535209139, now seen corresponding path program 1 times [2022-07-21 09:44:01,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:44:01,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683903886] [2022-07-21 09:44:01,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:44:01,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:44:01,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:01,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:44:01,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:01,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:44:01,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:01,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 09:44:01,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:01,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 09:44:01,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:01,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 09:44:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:01,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 09:44:01,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:01,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:44:01,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:01,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 09:44:01,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:01,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:44:01,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:01,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:01,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:01,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:01,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:01,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:01,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:01,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:44:01,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:01,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 09:44:01,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:01,473 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-21 09:44:01,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:44:01,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683903886] [2022-07-21 09:44:01,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683903886] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:44:01,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:44:01,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 09:44:01,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513450856] [2022-07-21 09:44:01,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:44:01,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 09:44:01,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:44:01,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 09:44:01,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:44:01,476 INFO L87 Difference]: Start difference. First operand 158 states and 193 transitions. Second operand has 11 states, 10 states have (on average 5.1) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 09:44:03,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:44:03,549 INFO L93 Difference]: Finished difference Result 240 states and 300 transitions. [2022-07-21 09:44:03,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 09:44:03,550 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.1) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 95 [2022-07-21 09:44:03,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:44:03,553 INFO L225 Difference]: With dead ends: 240 [2022-07-21 09:44:03,553 INFO L226 Difference]: Without dead ends: 210 [2022-07-21 09:44:03,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2022-07-21 09:44:03,556 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 213 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-21 09:44:03,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 806 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-21 09:44:03,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-07-21 09:44:03,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 163. [2022-07-21 09:44:03,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 109 states have (on average 1.1743119266055047) internal successors, (128), 111 states have internal predecessors, (128), 34 states have call successors, (34), 17 states have call predecessors, (34), 19 states have return successors, (37), 34 states have call predecessors, (37), 33 states have call successors, (37) [2022-07-21 09:44:03,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 199 transitions. [2022-07-21 09:44:03,571 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 199 transitions. Word has length 95 [2022-07-21 09:44:03,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:44:03,572 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 199 transitions. [2022-07-21 09:44:03,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.1) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 09:44:03,572 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 199 transitions. [2022-07-21 09:44:03,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-21 09:44:03,574 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:44:03,574 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:44:03,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 09:44:03,574 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:44:03,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:44:03,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1928236149, now seen corresponding path program 1 times [2022-07-21 09:44:03,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:44:03,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179118025] [2022-07-21 09:44:03,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:44:03,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:44:03,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:03,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:44:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:03,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:44:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:03,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 09:44:03,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:03,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 09:44:03,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:03,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 09:44:03,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:03,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 09:44:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:03,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:44:03,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:03,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 09:44:03,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:03,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:44:03,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:03,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:03,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:03,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:03,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:03,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:03,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:44:03,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:03,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 09:44:03,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:03,999 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-21 09:44:03,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:44:03,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179118025] [2022-07-21 09:44:03,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179118025] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:44:04,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:44:04,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 09:44:04,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77607778] [2022-07-21 09:44:04,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:44:04,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:44:04,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:44:04,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:44:04,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:44:04,002 INFO L87 Difference]: Start difference. First operand 163 states and 199 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 09:44:04,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:44:04,662 INFO L93 Difference]: Finished difference Result 247 states and 308 transitions. [2022-07-21 09:44:04,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:44:04,663 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 95 [2022-07-21 09:44:04,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:44:04,665 INFO L225 Difference]: With dead ends: 247 [2022-07-21 09:44:04,665 INFO L226 Difference]: Without dead ends: 212 [2022-07-21 09:44:04,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:44:04,666 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 182 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 09:44:04,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 581 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 09:44:04,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-07-21 09:44:04,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 165. [2022-07-21 09:44:04,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 110 states have (on average 1.1727272727272726) internal successors, (129), 112 states have internal predecessors, (129), 35 states have call successors, (35), 17 states have call predecessors, (35), 19 states have return successors, (38), 35 states have call predecessors, (38), 34 states have call successors, (38) [2022-07-21 09:44:04,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 202 transitions. [2022-07-21 09:44:04,678 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 202 transitions. Word has length 95 [2022-07-21 09:44:04,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:44:04,678 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 202 transitions. [2022-07-21 09:44:04,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 09:44:04,679 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 202 transitions. [2022-07-21 09:44:04,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-21 09:44:04,680 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:44:04,680 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:44:04,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 09:44:04,681 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:44:04,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:44:04,681 INFO L85 PathProgramCache]: Analyzing trace with hash -769929046, now seen corresponding path program 1 times [2022-07-21 09:44:04,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:44:04,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816006579] [2022-07-21 09:44:04,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:44:04,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:44:04,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:04,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:44:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:04,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:44:04,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:04,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 09:44:04,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:04,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 09:44:04,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:04,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 09:44:04,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:04,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 09:44:04,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:04,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:44:04,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:04,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 09:44:04,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:04,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:44:04,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:04,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:04,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:04,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:04,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:04,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:04,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:04,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:44:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:04,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 09:44:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:05,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 09:44:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:05,062 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-21 09:44:05,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:44:05,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816006579] [2022-07-21 09:44:05,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816006579] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:44:05,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:44:05,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:44:05,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556499724] [2022-07-21 09:44:05,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:44:05,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:44:05,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:44:05,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:44:05,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:44:05,064 INFO L87 Difference]: Start difference. First operand 165 states and 202 transitions. Second operand has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 09:44:06,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:44:06,743 INFO L93 Difference]: Finished difference Result 249 states and 314 transitions. [2022-07-21 09:44:06,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 09:44:06,744 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 101 [2022-07-21 09:44:06,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:44:06,746 INFO L225 Difference]: With dead ends: 249 [2022-07-21 09:44:06,746 INFO L226 Difference]: Without dead ends: 210 [2022-07-21 09:44:06,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 09:44:06,747 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 187 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 09:44:06,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 784 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-21 09:44:06,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-07-21 09:44:06,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 165. [2022-07-21 09:44:06,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 110 states have (on average 1.1636363636363636) internal successors, (128), 112 states have internal predecessors, (128), 35 states have call successors, (35), 17 states have call predecessors, (35), 19 states have return successors, (38), 35 states have call predecessors, (38), 34 states have call successors, (38) [2022-07-21 09:44:06,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 201 transitions. [2022-07-21 09:44:06,758 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 201 transitions. Word has length 101 [2022-07-21 09:44:06,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:44:06,759 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 201 transitions. [2022-07-21 09:44:06,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 09:44:06,759 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 201 transitions. [2022-07-21 09:44:06,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-21 09:44:06,761 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:44:06,761 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:44:06,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 09:44:06,761 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:44:06,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:44:06,762 INFO L85 PathProgramCache]: Analyzing trace with hash 780887995, now seen corresponding path program 1 times [2022-07-21 09:44:06,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:44:06,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563444118] [2022-07-21 09:44:06,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:44:06,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:44:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:06,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:44:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:06,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:44:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:06,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 09:44:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:06,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 09:44:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:06,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 09:44:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:06,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 09:44:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:06,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:44:06,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:07,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 09:44:07,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:07,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 09:44:07,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:07,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:07,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:07,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:07,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:07,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:44:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:07,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:44:07,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:07,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 09:44:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:07,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 09:44:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:07,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:44:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:07,392 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-21 09:44:07,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:44:07,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563444118] [2022-07-21 09:44:07,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563444118] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:44:07,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:44:07,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 09:44:07,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811799283] [2022-07-21 09:44:07,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:44:07,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 09:44:07,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:44:07,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 09:44:07,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-07-21 09:44:07,395 INFO L87 Difference]: Start difference. First operand 165 states and 201 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 8 states have internal predecessors, (58), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-21 09:44:09,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:44:09,096 INFO L93 Difference]: Finished difference Result 256 states and 316 transitions. [2022-07-21 09:44:09,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 09:44:09,097 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 8 states have internal predecessors, (58), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 106 [2022-07-21 09:44:09,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:44:09,098 INFO L225 Difference]: With dead ends: 256 [2022-07-21 09:44:09,099 INFO L226 Difference]: Without dead ends: 212 [2022-07-21 09:44:09,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2022-07-21 09:44:09,100 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 109 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 09:44:09,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 802 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-21 09:44:09,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-07-21 09:44:09,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 165. [2022-07-21 09:44:09,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 110 states have (on average 1.1454545454545455) internal successors, (126), 112 states have internal predecessors, (126), 35 states have call successors, (35), 17 states have call predecessors, (35), 19 states have return successors, (38), 35 states have call predecessors, (38), 34 states have call successors, (38) [2022-07-21 09:44:09,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 199 transitions. [2022-07-21 09:44:09,110 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 199 transitions. Word has length 106 [2022-07-21 09:44:09,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:44:09,110 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 199 transitions. [2022-07-21 09:44:09,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 8 states have internal predecessors, (58), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-21 09:44:09,111 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 199 transitions. [2022-07-21 09:44:09,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-21 09:44:09,112 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:44:09,112 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2022-07-21 09:44:09,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 09:44:09,113 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:44:09,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:44:09,113 INFO L85 PathProgramCache]: Analyzing trace with hash -2105088651, now seen corresponding path program 1 times [2022-07-21 09:44:09,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:44:09,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40744382] [2022-07-21 09:44:09,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:44:09,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:44:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:09,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:44:09,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40744382] [2022-07-21 09:44:09,262 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-07-21 09:44:09,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173126578] [2022-07-21 09:44:09,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:44:09,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:44:09,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:44:09,268 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) [2022-07-21 09:44:09,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 09:44:09,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:09,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 2749 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 09:44:09,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:44:09,908 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-21 09:44:09,908 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:44:09,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173126578] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:44:09,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:44:09,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 09:44:09,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931695067] [2022-07-21 09:44:09,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:44:09,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:44:09,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:44:09,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:44:09,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:44:09,911 INFO L87 Difference]: Start difference. First operand 165 states and 199 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 09:44:09,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:44:09,933 INFO L93 Difference]: Finished difference Result 274 states and 323 transitions. [2022-07-21 09:44:09,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 09:44:09,934 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 141 [2022-07-21 09:44:09,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:44:09,936 INFO L225 Difference]: With dead ends: 274 [2022-07-21 09:44:09,936 INFO L226 Difference]: Without dead ends: 165 [2022-07-21 09:44:09,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:44:09,937 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 0 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:44:09,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 535 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:44:09,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-07-21 09:44:09,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 160. [2022-07-21 09:44:09,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 106 states have (on average 1.1320754716981132) internal successors, (120), 108 states have internal predecessors, (120), 35 states have call successors, (35), 17 states have call predecessors, (35), 18 states have return successors, (35), 34 states have call predecessors, (35), 34 states have call successors, (35) [2022-07-21 09:44:09,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 190 transitions. [2022-07-21 09:44:09,967 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 190 transitions. Word has length 141 [2022-07-21 09:44:09,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:44:09,967 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 190 transitions. [2022-07-21 09:44:09,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 09:44:09,968 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 190 transitions. [2022-07-21 09:44:09,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-21 09:44:09,969 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:44:09,969 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2022-07-21 09:44:10,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 09:44:10,194 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,SelfDestructingSolverStorable10 [2022-07-21 09:44:10,194 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:44:10,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:44:10,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1279294517, now seen corresponding path program 1 times [2022-07-21 09:44:10,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:44:10,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999639734] [2022-07-21 09:44:10,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:44:10,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:44:10,288 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:44:10,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2058910824] [2022-07-21 09:44:10,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:44:10,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:44:10,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:44:10,290 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) [2022-07-21 09:44:10,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 09:44:10,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:10,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 2854 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 09:44:10,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:44:10,933 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-07-21 09:44:10,935 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:44:10,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:44:10,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999639734] [2022-07-21 09:44:10,936 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:44:10,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058910824] [2022-07-21 09:44:10,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058910824] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:44:10,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:44:10,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:44:10,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881041913] [2022-07-21 09:44:10,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:44:10,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:44:10,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:44:10,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:44:10,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:44:10,939 INFO L87 Difference]: Start difference. First operand 160 states and 190 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 09:44:10,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:44:10,972 INFO L93 Difference]: Finished difference Result 209 states and 247 transitions. [2022-07-21 09:44:10,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:44:10,972 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 147 [2022-07-21 09:44:10,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:44:10,974 INFO L225 Difference]: With dead ends: 209 [2022-07-21 09:44:10,974 INFO L226 Difference]: Without dead ends: 165 [2022-07-21 09:44:10,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:44:10,975 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 2 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:44:10,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 688 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:44:10,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-07-21 09:44:10,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2022-07-21 09:44:10,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 110 states have (on average 1.1272727272727272) internal successors, (124), 112 states have internal predecessors, (124), 35 states have call successors, (35), 17 states have call predecessors, (35), 19 states have return successors, (38), 35 states have call predecessors, (38), 34 states have call successors, (38) [2022-07-21 09:44:10,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 197 transitions. [2022-07-21 09:44:10,988 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 197 transitions. Word has length 147 [2022-07-21 09:44:10,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:44:10,989 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 197 transitions. [2022-07-21 09:44:10,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 09:44:10,989 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 197 transitions. [2022-07-21 09:44:10,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-21 09:44:10,992 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:44:10,992 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:44:11,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 09:44:11,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:44:11,220 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:44:11,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:44:11,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1555184552, now seen corresponding path program 1 times [2022-07-21 09:44:11,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:44:11,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899575342] [2022-07-21 09:44:11,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:44:11,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:44:11,311 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:44:11,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1178439044] [2022-07-21 09:44:11,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:44:11,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:44:11,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:44:11,313 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) [2022-07-21 09:44:11,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 09:44:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:11,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 2858 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 09:44:11,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:44:11,941 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-21 09:44:11,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:44:11,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:44:11,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899575342] [2022-07-21 09:44:11,942 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:44:11,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178439044] [2022-07-21 09:44:11,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178439044] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:44:11,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:44:11,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 09:44:11,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301292804] [2022-07-21 09:44:11,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:44:11,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:44:11,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:44:11,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:44:11,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:44:11,944 INFO L87 Difference]: Start difference. First operand 165 states and 197 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-21 09:44:12,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:44:12,131 INFO L93 Difference]: Finished difference Result 209 states and 246 transitions. [2022-07-21 09:44:12,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 09:44:12,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 153 [2022-07-21 09:44:12,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:44:12,133 INFO L225 Difference]: With dead ends: 209 [2022-07-21 09:44:12,134 INFO L226 Difference]: Without dead ends: 165 [2022-07-21 09:44:12,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:44:12,135 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 1 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:44:12,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 525 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 09:44:12,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-07-21 09:44:12,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 160. [2022-07-21 09:44:12,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 106 states have (on average 1.1226415094339623) internal successors, (119), 108 states have internal predecessors, (119), 35 states have call successors, (35), 17 states have call predecessors, (35), 18 states have return successors, (35), 34 states have call predecessors, (35), 34 states have call successors, (35) [2022-07-21 09:44:12,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 189 transitions. [2022-07-21 09:44:12,145 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 189 transitions. Word has length 153 [2022-07-21 09:44:12,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:44:12,145 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 189 transitions. [2022-07-21 09:44:12,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-21 09:44:12,146 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 189 transitions. [2022-07-21 09:44:12,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-21 09:44:12,148 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:44:12,148 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:44:12,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 09:44:12,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:44:12,355 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:44:12,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:44:12,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1642792293, now seen corresponding path program 1 times [2022-07-21 09:44:12,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:44:12,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925072455] [2022-07-21 09:44:12,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:44:12,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:44:12,443 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:44:12,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1478594232] [2022-07-21 09:44:12,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:44:12,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:44:12,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:44:12,446 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) [2022-07-21 09:44:12,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 09:44:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:13,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 2906 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-21 09:44:13,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:44:13,173 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-21 09:44:13,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:44:13,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:44:13,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925072455] [2022-07-21 09:44:13,174 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:44:13,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478594232] [2022-07-21 09:44:13,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478594232] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:44:13,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:44:13,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:44:13,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957392818] [2022-07-21 09:44:13,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:44:13,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:44:13,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:44:13,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:44:13,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:44:13,176 INFO L87 Difference]: Start difference. First operand 160 states and 189 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-07-21 09:44:13,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:44:13,241 INFO L93 Difference]: Finished difference Result 310 states and 361 transitions. [2022-07-21 09:44:13,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:44:13,242 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 160 [2022-07-21 09:44:13,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:44:13,244 INFO L225 Difference]: With dead ends: 310 [2022-07-21 09:44:13,244 INFO L226 Difference]: Without dead ends: 175 [2022-07-21 09:44:13,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:44:13,245 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 33 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:44:13,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 532 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:44:13,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-07-21 09:44:13,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 158. [2022-07-21 09:44:13,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 104 states have (on average 1.1153846153846154) internal successors, (116), 106 states have internal predecessors, (116), 35 states have call successors, (35), 17 states have call predecessors, (35), 18 states have return successors, (35), 34 states have call predecessors, (35), 34 states have call successors, (35) [2022-07-21 09:44:13,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 186 transitions. [2022-07-21 09:44:13,255 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 186 transitions. Word has length 160 [2022-07-21 09:44:13,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:44:13,258 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 186 transitions. [2022-07-21 09:44:13,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-07-21 09:44:13,259 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 186 transitions. [2022-07-21 09:44:13,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-21 09:44:13,262 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:44:13,262 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:44:13,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 09:44:13,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-21 09:44:13,488 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:44:13,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:44:13,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1935894822, now seen corresponding path program 1 times [2022-07-21 09:44:13,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:44:13,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996270524] [2022-07-21 09:44:13,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:44:13,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:44:13,574 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:44:13,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1375052167] [2022-07-21 09:44:13,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:44:13,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:44:13,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:44:13,576 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) [2022-07-21 09:44:13,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 09:44:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:14,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 2910 conjuncts, 45 conjunts are in the unsatisfiable core [2022-07-21 09:44:14,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:44:14,369 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-21 09:44:14,370 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:44:14,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:44:14,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996270524] [2022-07-21 09:44:14,370 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:44:14,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375052167] [2022-07-21 09:44:14,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375052167] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:44:14,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:44:14,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 09:44:14,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122764755] [2022-07-21 09:44:14,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:44:14,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 09:44:14,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:44:14,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 09:44:14,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:44:14,372 INFO L87 Difference]: Start difference. First operand 158 states and 186 transitions. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 9 states have internal predecessors, (81), 2 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 4 states have call predecessors, (24), 2 states have call successors, (24) [2022-07-21 09:44:14,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:44:14,959 INFO L93 Difference]: Finished difference Result 211 states and 245 transitions. [2022-07-21 09:44:14,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:44:14,960 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 9 states have internal predecessors, (81), 2 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 4 states have call predecessors, (24), 2 states have call successors, (24) Word has length 161 [2022-07-21 09:44:14,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:44:14,962 INFO L225 Difference]: With dead ends: 211 [2022-07-21 09:44:14,962 INFO L226 Difference]: Without dead ends: 156 [2022-07-21 09:44:14,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-07-21 09:44:14,963 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 5 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 09:44:14,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1685 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 09:44:14,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-07-21 09:44:14,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2022-07-21 09:44:14,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 103 states have (on average 1.0970873786407767) internal successors, (113), 105 states have internal predecessors, (113), 34 states have call successors, (34), 17 states have call predecessors, (34), 18 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2022-07-21 09:44:14,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 181 transitions. [2022-07-21 09:44:14,973 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 181 transitions. Word has length 161 [2022-07-21 09:44:14,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:44:14,973 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 181 transitions. [2022-07-21 09:44:14,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 9 states have internal predecessors, (81), 2 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 4 states have call predecessors, (24), 2 states have call successors, (24) [2022-07-21 09:44:14,974 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 181 transitions. [2022-07-21 09:44:14,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-07-21 09:44:14,976 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:44:14,977 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:44:15,016 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-21 09:44:15,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-21 09:44:15,192 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:44:15,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:44:15,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1188853320, now seen corresponding path program 1 times [2022-07-21 09:44:15,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:44:15,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558194612] [2022-07-21 09:44:15,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:44:15,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:44:15,280 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:44:15,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1510202423] [2022-07-21 09:44:15,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:44:15,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:44:15,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:44:15,282 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) [2022-07-21 09:44:15,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 09:44:20,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:44:20,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 3092 conjuncts, 452 conjunts are in the unsatisfiable core [2022-07-21 09:44:20,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:44:20,750 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 [2022-07-21 09:44:20,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:44:20,761 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 18 treesize of output 19 [2022-07-21 09:44:20,806 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 [2022-07-21 09:44:20,810 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