./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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_bounded_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 a20f0fb44c1e014f700b9e4b1558eda154ddd78bb739e07c9e4f28b94fe2d47f --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:48:56,545 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:48:56,565 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:48:56,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:48:56,596 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:48:56,596 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:48:56,598 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:48:56,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:48:56,603 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:48:56,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:48:56,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:48:56,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:48:56,609 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:48:56,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:48:56,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:48:56,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:48:56,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:48:56,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:48:56,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:48:56,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:48:56,622 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:48:56,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:48:56,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:48:56,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:48:56,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:48:56,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:48:56,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:48:56,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:48:56,632 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:48:56,632 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:48:56,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:48:56,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:48:56,634 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:48:56,634 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:48:56,635 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:48:56,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:48:56,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:48:56,636 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:48:56,636 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:48:56,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:48:56,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:48:56,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:48:56,639 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-13 22:48:56,667 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:48:56,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:48:56,668 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:48:56,668 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:48:56,669 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:48:56,669 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:48:56,670 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:48:56,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:48:56,670 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:48:56,671 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:48:56,671 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:48:56,671 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:48:56,671 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:48:56,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:48:56,672 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:48:56,672 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:48:56,672 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:48:56,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:48:56,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:48:56,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:48:56,673 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:48:56,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:48:56,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:48:56,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:48:56,673 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:48:56,674 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:48:56,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:48:56,674 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:48:56,674 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:48:56,674 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:48:56,675 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a20f0fb44c1e014f700b9e4b1558eda154ddd78bb739e07c9e4f28b94fe2d47f [2022-07-13 22:48:56,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:48:56,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:48:56,914 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:48:56,915 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:48:56,915 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:48:56,916 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i [2022-07-13 22:48:56,968 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c04851016/4c3201579be6480f9de0f847a7c4c0fc/FLAG094ce737c [2022-07-13 22:48:57,554 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:48:57,554 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i [2022-07-13 22:48:57,582 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c04851016/4c3201579be6480f9de0f847a7c4c0fc/FLAG094ce737c [2022-07-13 22:48:57,749 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c04851016/4c3201579be6480f9de0f847a7c4c0fc [2022-07-13 22:48:57,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:48:57,752 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:48:57,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:48:57,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:48:57,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:48:57,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:48:57" (1/1) ... [2022-07-13 22:48:57,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ad006d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:48:57, skipping insertion in model container [2022-07-13 22:48:57,757 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:48:57" (1/1) ... [2022-07-13 22:48:57,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:48:57,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:48:58,072 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_bounded_harness.i[4501,4514] [2022-07-13 22:48:58,077 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_bounded_harness.i[4561,4574] [2022-07-13 22:48:58,669 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:58,673 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:58,674 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:58,674 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:58,675 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:58,689 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:58,691 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:58,694 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:58,696 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:58,698 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:58,700 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:58,700 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:58,701 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:58,934 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:48:58,934 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:48:58,935 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:48:58,936 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:48:58,936 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:48:58,937 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:48:58,937 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:48:58,938 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:48:58,938 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:48:58,939 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:48:59,044 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-13 22:48:59,275 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:59,276 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:59,293 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:59,294 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:59,298 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:59,298 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:59,309 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:59,310 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:59,311 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:59,311 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:59,311 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:59,312 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:59,312 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:59,340 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:48:59,371 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:48:59,386 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_bounded_harness.i[4501,4514] [2022-07-13 22:48:59,387 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_bounded_harness.i[4561,4574] [2022-07-13 22:48:59,416 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:59,417 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:59,417 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:59,417 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:59,417 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:59,422 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:59,423 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:59,424 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:59,424 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:59,424 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:59,425 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:59,425 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:59,425 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:59,442 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:48:59,443 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:48:59,443 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:48:59,444 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:48:59,444 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:48:59,446 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:48:59,446 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:48:59,446 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:48:59,447 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:48:59,447 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:48:59,466 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-13 22:48:59,614 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:59,619 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:59,624 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:59,625 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:59,627 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:59,627 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:59,635 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:59,636 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:59,636 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:59,636 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:59,637 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:59,637 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:59,638 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:48:59,650 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:48:59,817 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:48:59,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:48:59 WrapperNode [2022-07-13 22:48:59,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:48:59,819 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:48:59,819 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:48:59,819 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:48:59,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:48:59" (1/1) ... [2022-07-13 22:48:59,882 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:48:59" (1/1) ... [2022-07-13 22:48:59,935 INFO L137 Inliner]: procedures = 774, calls = 2430, calls flagged for inlining = 67, calls inlined = 13, statements flattened = 800 [2022-07-13 22:48:59,935 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:48:59,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:48:59,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:48:59,936 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:48:59,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:48:59" (1/1) ... [2022-07-13 22:48:59,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:48:59" (1/1) ... [2022-07-13 22:48:59,946 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:48:59" (1/1) ... [2022-07-13 22:48:59,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:48:59" (1/1) ... [2022-07-13 22:48:59,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:48:59" (1/1) ... [2022-07-13 22:48:59,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:48:59" (1/1) ... [2022-07-13 22:48:59,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:48:59" (1/1) ... [2022-07-13 22:48:59,988 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:48:59,988 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:48:59,989 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:48:59,989 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:48:59,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:48:59" (1/1) ... [2022-07-13 22:49:00,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:49:00,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:49:00,015 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) [2022-07-13 22:49:00,020 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 [2022-07-13 22:49:00,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-07-13 22:49:00,037 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-13 22:49:00,037 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-13 22:49:00,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:49:00,037 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-13 22:49:00,037 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-13 22:49:00,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-13 22:49:00,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-13 22:49:00,038 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2022-07-13 22:49:00,038 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2022-07-13 22:49:00,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 22:49:00,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:49:00,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 22:49:00,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:49:00,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:49:00,038 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-13 22:49:00,038 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-13 22:49:00,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:49:00,039 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-07-13 22:49:00,039 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-07-13 22:49:00,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 22:49:00,039 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-13 22:49:00,039 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-13 22:49:00,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:49:00,039 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2022-07-13 22:49:00,039 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2022-07-13 22:49:00,040 INFO L130 BoogieDeclarations]: Found specification of procedure s_update_template_size [2022-07-13 22:49:00,040 INFO L138 BoogieDeclarations]: Found implementation of procedure s_update_template_size [2022-07-13 22:49:00,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:49:00,040 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-07-13 22:49:00,040 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-07-13 22:49:00,040 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_calloc [2022-07-13 22:49:00,040 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_calloc [2022-07-13 22:49:00,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-07-13 22:49:00,040 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2022-07-13 22:49:00,041 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2022-07-13 22:49:00,041 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-13 22:49:00,041 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-13 22:49:00,041 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2022-07-13 22:49:00,041 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2022-07-13 22:49:00,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-13 22:49:00,041 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-13 22:49:00,041 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-13 22:49:00,041 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-13 22:49:00,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-13 22:49:00,042 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-07-13 22:49:00,042 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-07-13 22:49:00,042 INFO L130 BoogieDeclarations]: Found specification of procedure s_alloc_state [2022-07-13 22:49:00,042 INFO L138 BoogieDeclarations]: Found implementation of procedure s_alloc_state [2022-07-13 22:49:00,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:49:00,290 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:49:00,292 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:49:01,194 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !true; [2022-07-13 22:49:01,205 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:49:01,212 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:49:01,212 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 22:49:01,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:49:01 BoogieIcfgContainer [2022-07-13 22:49:01,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:49:01,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:49:01,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:49:01,218 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:49:01,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:48:57" (1/3) ... [2022-07-13 22:49:01,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@184d8887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:49:01, skipping insertion in model container [2022-07-13 22:49:01,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:48:59" (2/3) ... [2022-07-13 22:49:01,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@184d8887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:49:01, skipping insertion in model container [2022-07-13 22:49:01,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:49:01" (3/3) ... [2022-07-13 22:49:01,220 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_init_bounded_harness.i [2022-07-13 22:49:01,231 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:49:01,231 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:49:01,273 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:49:01,281 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@2e652934, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5280d2a2 [2022-07-13 22:49:01,282 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 22:49:01,285 INFO L276 IsEmpty]: Start isEmpty. Operand has 170 states, 113 states have (on average 1.2123893805309736) internal successors, (137), 113 states have internal predecessors, (137), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-07-13 22:49:01,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-13 22:49:01,292 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:49:01,293 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:49:01,293 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:49:01,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:49:01,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1130665699, now seen corresponding path program 1 times [2022-07-13 22:49:01,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:49:01,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636756640] [2022-07-13 22:49:01,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:49:01,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:49:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:01,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:49:01,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:01,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:49:01,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:01,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:49:01,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:01,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 22:49:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:01,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 22:49:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:01,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 22:49:01,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:01,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 22:49:01,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:01,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 22:49:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:01,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 22:49:01,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:01,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:49:01,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:01,911 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-13 22:49:01,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:49:01,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636756640] [2022-07-13 22:49:01,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636756640] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:49:01,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:49:01,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:49:01,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265055645] [2022-07-13 22:49:01,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:49:01,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:49:01,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:49:01,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:49:01,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:49:01,944 INFO L87 Difference]: Start difference. First operand has 170 states, 113 states have (on average 1.2123893805309736) internal successors, (137), 113 states have internal predecessors, (137), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 22:49:02,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:49:02,516 INFO L93 Difference]: Finished difference Result 337 states and 438 transitions. [2022-07-13 22:49:02,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:49:02,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 71 [2022-07-13 22:49:02,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:49:02,529 INFO L225 Difference]: With dead ends: 337 [2022-07-13 22:49:02,529 INFO L226 Difference]: Without dead ends: 164 [2022-07-13 22:49:02,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:49:02,535 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 42 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 22:49:02,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 256 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 22:49:02,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-07-13 22:49:02,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 161. [2022-07-13 22:49:02,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 104 states have (on average 1.1923076923076923) internal successors, (124), 105 states have internal predecessors, (124), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-07-13 22:49:02,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 199 transitions. [2022-07-13 22:49:02,578 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 199 transitions. Word has length 71 [2022-07-13 22:49:02,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:49:02,579 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 199 transitions. [2022-07-13 22:49:02,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 22:49:02,579 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 199 transitions. [2022-07-13 22:49:02,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-13 22:49:02,583 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:49:02,583 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:49:02,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:49:02,584 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:49:02,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:49:02,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1349366569, now seen corresponding path program 1 times [2022-07-13 22:49:02,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:49:02,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059792511] [2022-07-13 22:49:02,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:49:02,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:49:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:02,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:49:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:02,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:49:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:02,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:49:02,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:02,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 22:49:02,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:02,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 22:49:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:02,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 22:49:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:02,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 22:49:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:02,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 22:49:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:02,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 22:49:02,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:02,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:49:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:02,919 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-13 22:49:02,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:49:02,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059792511] [2022-07-13 22:49:02,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059792511] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:49:02,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:49:02,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:49:02,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241961265] [2022-07-13 22:49:02,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:49:02,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:49:02,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:49:02,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:49:02,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:49:02,929 INFO L87 Difference]: Start difference. First operand 161 states and 199 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 22:49:03,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:49:03,314 INFO L93 Difference]: Finished difference Result 304 states and 368 transitions. [2022-07-13 22:49:03,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:49:03,318 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 71 [2022-07-13 22:49:03,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:49:03,319 INFO L225 Difference]: With dead ends: 304 [2022-07-13 22:49:03,319 INFO L226 Difference]: Without dead ends: 170 [2022-07-13 22:49:03,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:49:03,321 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 47 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 22:49:03,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 494 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 22:49:03,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-07-13 22:49:03,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 163. [2022-07-13 22:49:03,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 106 states have (on average 1.1886792452830188) internal successors, (126), 107 states have internal predecessors, (126), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-07-13 22:49:03,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 201 transitions. [2022-07-13 22:49:03,333 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 201 transitions. Word has length 71 [2022-07-13 22:49:03,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:49:03,333 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 201 transitions. [2022-07-13 22:49:03,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 22:49:03,333 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 201 transitions. [2022-07-13 22:49:03,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-13 22:49:03,334 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:49:03,334 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:49:03,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 22:49:03,335 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:49:03,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:49:03,335 INFO L85 PathProgramCache]: Analyzing trace with hash -721748580, now seen corresponding path program 1 times [2022-07-13 22:49:03,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:49:03,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950908564] [2022-07-13 22:49:03,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:49:03,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:49:03,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:03,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:49:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:03,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:49:03,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:03,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:49:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:03,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 22:49:03,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:03,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 22:49:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:03,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 22:49:03,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:03,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 22:49:03,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:03,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 22:49:03,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:03,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 22:49:03,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:03,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 22:49:03,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:03,513 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-13 22:49:03,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:49:03,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950908564] [2022-07-13 22:49:03,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950908564] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:49:03,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:49:03,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:49:03,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430031368] [2022-07-13 22:49:03,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:49:03,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:49:03,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:49:03,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:49:03,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:49:03,515 INFO L87 Difference]: Start difference. First operand 163 states and 201 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 22:49:03,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:49:03,993 INFO L93 Difference]: Finished difference Result 212 states and 254 transitions. [2022-07-13 22:49:03,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:49:03,993 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 73 [2022-07-13 22:49:03,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:49:03,995 INFO L225 Difference]: With dead ends: 212 [2022-07-13 22:49:03,995 INFO L226 Difference]: Without dead ends: 170 [2022-07-13 22:49:03,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:49:03,996 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 42 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 22:49:03,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 491 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 22:49:03,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-07-13 22:49:04,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 167. [2022-07-13 22:49:04,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 109 states have (on average 1.18348623853211) internal successors, (129), 110 states have internal predecessors, (129), 38 states have call successors, (38), 18 states have call predecessors, (38), 19 states have return successors, (38), 38 states have call predecessors, (38), 37 states have call successors, (38) [2022-07-13 22:49:04,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 205 transitions. [2022-07-13 22:49:04,011 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 205 transitions. Word has length 73 [2022-07-13 22:49:04,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:49:04,011 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 205 transitions. [2022-07-13 22:49:04,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 22:49:04,011 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 205 transitions. [2022-07-13 22:49:04,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-13 22:49:04,012 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:49:04,012 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:49:04,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 22:49:04,012 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:49:04,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:49:04,013 INFO L85 PathProgramCache]: Analyzing trace with hash -898091516, now seen corresponding path program 1 times [2022-07-13 22:49:04,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:49:04,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600564223] [2022-07-13 22:49:04,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:49:04,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:49:04,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:04,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:49:04,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:04,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:49:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:04,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:49:04,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:04,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 22:49:04,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:04,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 22:49:04,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:04,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 22:49:04,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:04,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 22:49:04,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:04,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 22:49:04,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:04,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 22:49:04,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:04,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 22:49:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:04,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 22:49:04,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:04,232 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-13 22:49:04,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:49:04,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600564223] [2022-07-13 22:49:04,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600564223] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:49:04,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:49:04,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:49:04,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464664128] [2022-07-13 22:49:04,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:49:04,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:49:04,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:49:04,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:49:04,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:49:04,236 INFO L87 Difference]: Start difference. First operand 167 states and 205 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 22:49:04,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:49:04,769 INFO L93 Difference]: Finished difference Result 258 states and 321 transitions. [2022-07-13 22:49:04,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:49:04,770 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 78 [2022-07-13 22:49:04,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:49:04,772 INFO L225 Difference]: With dead ends: 258 [2022-07-13 22:49:04,772 INFO L226 Difference]: Without dead ends: 216 [2022-07-13 22:49:04,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:49:04,773 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 93 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 22:49:04,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 534 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 22:49:04,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-07-13 22:49:04,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 163. [2022-07-13 22:49:04,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 106 states have (on average 1.169811320754717) internal successors, (124), 107 states have internal predecessors, (124), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-07-13 22:49:04,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 199 transitions. [2022-07-13 22:49:04,784 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 199 transitions. Word has length 78 [2022-07-13 22:49:04,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:49:04,784 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 199 transitions. [2022-07-13 22:49:04,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 22:49:04,784 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 199 transitions. [2022-07-13 22:49:04,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-13 22:49:04,785 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:49:04,785 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:49:04,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 22:49:04,786 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:49:04,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:49:04,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1146908147, now seen corresponding path program 1 times [2022-07-13 22:49:04,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:49:04,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018267354] [2022-07-13 22:49:04,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:49:04,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:49:04,834 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:49:04,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [616649001] [2022-07-13 22:49:04,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:49:04,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:49:04,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:49:04,837 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) [2022-07-13 22:49:04,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 22:49:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:05,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 2373 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 22:49:05,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:49:05,270 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-13 22:49:05,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:49:05,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:49:05,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018267354] [2022-07-13 22:49:05,270 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:49:05,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616649001] [2022-07-13 22:49:05,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616649001] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:49:05,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:49:05,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:49:05,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305798914] [2022-07-13 22:49:05,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:49:05,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:49:05,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:49:05,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:49:05,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:49:05,272 INFO L87 Difference]: Start difference. First operand 163 states and 199 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-13 22:49:05,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:49:05,299 INFO L93 Difference]: Finished difference Result 277 states and 333 transitions. [2022-07-13 22:49:05,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:49:05,300 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 95 [2022-07-13 22:49:05,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:49:05,301 INFO L225 Difference]: With dead ends: 277 [2022-07-13 22:49:05,301 INFO L226 Difference]: Without dead ends: 168 [2022-07-13 22:49:05,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:49:05,303 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 2 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 769 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 [2022-07-13 22:49:05,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 769 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:49:05,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-07-13 22:49:05,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2022-07-13 22:49:05,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 110 states have (on average 1.1636363636363636) internal successors, (128), 111 states have internal predecessors, (128), 38 states have call successors, (38), 18 states have call predecessors, (38), 19 states have return successors, (40), 38 states have call predecessors, (40), 37 states have call successors, (40) [2022-07-13 22:49:05,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 206 transitions. [2022-07-13 22:49:05,311 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 206 transitions. Word has length 95 [2022-07-13 22:49:05,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:49:05,311 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 206 transitions. [2022-07-13 22:49:05,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-13 22:49:05,312 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 206 transitions. [2022-07-13 22:49:05,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-13 22:49:05,313 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:49:05,313 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:49:05,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-13 22:49:05,535 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 [2022-07-13 22:49:05,536 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:49:05,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:49:05,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1882124116, now seen corresponding path program 1 times [2022-07-13 22:49:05,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:49:05,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093803283] [2022-07-13 22:49:05,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:49:05,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:49:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:05,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:49:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:05,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:49:05,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:05,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:49:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:05,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 22:49:05,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:05,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 22:49:05,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:05,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 22:49:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:05,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 22:49:05,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:05,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 22:49:05,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:05,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 22:49:05,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:05,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:49:05,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:05,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:05,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:05,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:05,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:05,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:05,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:49:05,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:05,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 22:49:05,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:05,925 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-13 22:49:05,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:49:05,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093803283] [2022-07-13 22:49:05,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093803283] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:49:05,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:49:05,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-13 22:49:05,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014375745] [2022-07-13 22:49:05,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:49:05,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 22:49:05,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:49:05,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 22:49:05,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-07-13 22:49:05,927 INFO L87 Difference]: Start difference. First operand 168 states and 206 transitions. Second operand has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-13 22:49:07,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:49:07,656 INFO L93 Difference]: Finished difference Result 264 states and 328 transitions. [2022-07-13 22:49:07,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 22:49:07,656 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 101 [2022-07-13 22:49:07,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:49:07,658 INFO L225 Difference]: With dead ends: 264 [2022-07-13 22:49:07,658 INFO L226 Difference]: Without dead ends: 220 [2022-07-13 22:49:07,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-07-13 22:49:07,659 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 215 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-13 22:49:07,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 854 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-13 22:49:07,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-07-13 22:49:07,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 173. [2022-07-13 22:49:07,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 114 states have (on average 1.1666666666666667) internal successors, (133), 116 states have internal predecessors, (133), 38 states have call successors, (38), 18 states have call predecessors, (38), 20 states have return successors, (41), 38 states have call predecessors, (41), 37 states have call successors, (41) [2022-07-13 22:49:07,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 212 transitions. [2022-07-13 22:49:07,675 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 212 transitions. Word has length 101 [2022-07-13 22:49:07,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:49:07,677 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 212 transitions. [2022-07-13 22:49:07,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-13 22:49:07,678 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 212 transitions. [2022-07-13 22:49:07,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-13 22:49:07,682 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:49:07,682 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:49:07,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 22:49:07,683 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:49:07,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:49:07,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1489097106, now seen corresponding path program 1 times [2022-07-13 22:49:07,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:49:07,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703033002] [2022-07-13 22:49:07,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:49:07,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:49:07,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:07,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:49:07,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:07,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:49:07,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:07,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:49:07,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:07,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 22:49:07,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:07,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 22:49:07,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:07,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 22:49:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:07,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 22:49:07,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:07,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 22:49:07,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:07,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 22:49:07,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:07,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:49:07,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:07,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:07,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:07,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:07,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:07,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:49:07,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:07,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 22:49:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:07,964 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-13 22:49:07,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:49:07,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703033002] [2022-07-13 22:49:07,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703033002] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:49:07,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:49:07,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 22:49:07,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258045769] [2022-07-13 22:49:07,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:49:07,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:49:07,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:49:07,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:49:07,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:49:07,966 INFO L87 Difference]: Start difference. First operand 173 states and 212 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-13 22:49:08,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:49:08,670 INFO L93 Difference]: Finished difference Result 271 states and 336 transitions. [2022-07-13 22:49:08,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 22:49:08,671 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 101 [2022-07-13 22:49:08,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:49:08,672 INFO L225 Difference]: With dead ends: 271 [2022-07-13 22:49:08,672 INFO L226 Difference]: Without dead ends: 222 [2022-07-13 22:49:08,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:49:08,673 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 110 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 22:49:08,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 557 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 22:49:08,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-07-13 22:49:08,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 175. [2022-07-13 22:49:08,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 115 states have (on average 1.1652173913043478) internal successors, (134), 117 states have internal predecessors, (134), 39 states have call successors, (39), 18 states have call predecessors, (39), 20 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2022-07-13 22:49:08,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 215 transitions. [2022-07-13 22:49:08,688 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 215 transitions. Word has length 101 [2022-07-13 22:49:08,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:49:08,690 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 215 transitions. [2022-07-13 22:49:08,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-13 22:49:08,690 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 215 transitions. [2022-07-13 22:49:08,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-13 22:49:08,692 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:49:08,692 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:49:08,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 22:49:08,693 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:49:08,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:49:08,693 INFO L85 PathProgramCache]: Analyzing trace with hash 149844693, now seen corresponding path program 1 times [2022-07-13 22:49:08,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:49:08,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853977828] [2022-07-13 22:49:08,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:49:08,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:49:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:08,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:49:08,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:08,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:49:08,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:08,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:49:08,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:08,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 22:49:08,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:08,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 22:49:08,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:08,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 22:49:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:08,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 22:49:08,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:08,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 22:49:08,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:08,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 22:49:08,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:08,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:49:08,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:08,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:08,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:08,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:08,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:08,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:08,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:08,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:49:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:08,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 22:49:08,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:09,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 22:49:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:09,061 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-13 22:49:09,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:49:09,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853977828] [2022-07-13 22:49:09,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853977828] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:49:09,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:49:09,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-13 22:49:09,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037395371] [2022-07-13 22:49:09,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:49:09,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 22:49:09,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:49:09,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 22:49:09,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-13 22:49:09,085 INFO L87 Difference]: Start difference. First operand 175 states and 215 transitions. Second operand has 13 states, 12 states have (on average 4.666666666666667) internal successors, (56), 9 states have internal predecessors, (56), 4 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-13 22:49:11,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:49:11,242 INFO L93 Difference]: Finished difference Result 293 states and 372 transitions. [2022-07-13 22:49:11,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 22:49:11,242 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.666666666666667) internal successors, (56), 9 states have internal predecessors, (56), 4 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 107 [2022-07-13 22:49:11,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:49:11,244 INFO L225 Difference]: With dead ends: 293 [2022-07-13 22:49:11,244 INFO L226 Difference]: Without dead ends: 240 [2022-07-13 22:49:11,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-07-13 22:49:11,245 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 115 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:49:11,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 1182 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-13 22:49:11,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-07-13 22:49:11,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 175. [2022-07-13 22:49:11,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 115 states have (on average 1.1565217391304348) internal successors, (133), 117 states have internal predecessors, (133), 39 states have call successors, (39), 18 states have call predecessors, (39), 20 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2022-07-13 22:49:11,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 214 transitions. [2022-07-13 22:49:11,254 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 214 transitions. Word has length 107 [2022-07-13 22:49:11,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:49:11,254 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 214 transitions. [2022-07-13 22:49:11,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.666666666666667) internal successors, (56), 9 states have internal predecessors, (56), 4 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-13 22:49:11,254 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 214 transitions. [2022-07-13 22:49:11,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-13 22:49:11,255 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:49:11,255 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:49:11,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 22:49:11,256 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:49:11,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:49:11,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1438548646, now seen corresponding path program 1 times [2022-07-13 22:49:11,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:49:11,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754543049] [2022-07-13 22:49:11,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:49:11,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:49:11,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:11,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:49:11,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:11,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:49:11,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:11,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 22:49:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:11,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 22:49:11,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:11,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 22:49:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:11,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 22:49:11,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:11,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 22:49:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:11,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 22:49:11,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:11,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 22:49:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:11,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:49:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:11,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:11,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:11,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:49:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:11,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:49:11,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:11,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 22:49:11,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:11,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 22:49:11,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:11,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:49:11,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:11,722 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-13 22:49:11,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:49:11,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754543049] [2022-07-13 22:49:11,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754543049] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:49:11,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:49:11,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-13 22:49:11,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234359540] [2022-07-13 22:49:11,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:49:11,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 22:49:11,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:49:11,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 22:49:11,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-13 22:49:11,725 INFO L87 Difference]: Start difference. First operand 175 states and 214 transitions. Second operand has 13 states, 12 states have (on average 4.916666666666667) internal successors, (59), 9 states have internal predecessors, (59), 4 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-13 22:49:13,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:49:13,890 INFO L93 Difference]: Finished difference Result 280 states and 344 transitions. [2022-07-13 22:49:13,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 22:49:13,891 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.916666666666667) internal successors, (59), 9 states have internal predecessors, (59), 4 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 112 [2022-07-13 22:49:13,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:49:13,892 INFO L225 Difference]: With dead ends: 280 [2022-07-13 22:49:13,892 INFO L226 Difference]: Without dead ends: 222 [2022-07-13 22:49:13,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2022-07-13 22:49:13,893 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 145 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:49:13,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 1056 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-13 22:49:13,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-07-13 22:49:13,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 175. [2022-07-13 22:49:13,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 115 states have (on average 1.1391304347826088) internal successors, (131), 117 states have internal predecessors, (131), 39 states have call successors, (39), 18 states have call predecessors, (39), 20 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2022-07-13 22:49:13,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 212 transitions. [2022-07-13 22:49:13,904 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 212 transitions. Word has length 112 [2022-07-13 22:49:13,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:49:13,904 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 212 transitions. [2022-07-13 22:49:13,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.916666666666667) internal successors, (59), 9 states have internal predecessors, (59), 4 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-13 22:49:13,905 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 212 transitions. [2022-07-13 22:49:13,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-13 22:49:13,906 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:49:13,906 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-07-13 22:49:13,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 22:49:13,906 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:49:13,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:49:13,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1044102274, now seen corresponding path program 1 times [2022-07-13 22:49:13,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:49:13,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756537857] [2022-07-13 22:49:13,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:49:13,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:49:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:14,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:49:14,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756537857] [2022-07-13 22:49:14,001 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-07-13 22:49:14,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409878872] [2022-07-13 22:49:14,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:49:14,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:49:14,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:49:14,024 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) [2022-07-13 22:49:14,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 22:49:14,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:14,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 2761 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 22:49:14,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:49:14,519 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-13 22:49:14,519 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:49:14,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409878872] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:49:14,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:49:14,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 22:49:14,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137863320] [2022-07-13 22:49:14,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:49:14,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:49:14,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:49:14,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:49:14,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:49:14,521 INFO L87 Difference]: Start difference. First operand 175 states and 212 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-13 22:49:14,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:49:14,531 INFO L93 Difference]: Finished difference Result 294 states and 348 transitions. [2022-07-13 22:49:14,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 22:49:14,532 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 147 [2022-07-13 22:49:14,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:49:14,533 INFO L225 Difference]: With dead ends: 294 [2022-07-13 22:49:14,533 INFO L226 Difference]: Without dead ends: 175 [2022-07-13 22:49:14,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:49:14,534 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 0 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 580 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 [2022-07-13 22:49:14,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 580 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:49:14,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-07-13 22:49:14,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 170. [2022-07-13 22:49:14,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 111 states have (on average 1.1261261261261262) internal successors, (125), 113 states have internal predecessors, (125), 39 states have call successors, (39), 18 states have call predecessors, (39), 19 states have return successors, (39), 38 states have call predecessors, (39), 38 states have call successors, (39) [2022-07-13 22:49:14,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 203 transitions. [2022-07-13 22:49:14,540 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 203 transitions. Word has length 147 [2022-07-13 22:49:14,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:49:14,540 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 203 transitions. [2022-07-13 22:49:14,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-13 22:49:14,540 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 203 transitions. [2022-07-13 22:49:14,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-13 22:49:14,541 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:49:14,542 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:49:14,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-13 22:49:14,761 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,SelfDestructingSolverStorable9 [2022-07-13 22:49:14,762 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:49:14,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:49:14,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1263288230, now seen corresponding path program 1 times [2022-07-13 22:49:14,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:49:14,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321879620] [2022-07-13 22:49:14,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:49:14,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:49:14,841 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:49:14,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [890368698] [2022-07-13 22:49:14,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:49:14,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:49:14,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:49:14,856 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) [2022-07-13 22:49:14,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 22:49:15,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:15,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 2866 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 22:49:15,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:49:15,441 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-07-13 22:49:15,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:49:15,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:49:15,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321879620] [2022-07-13 22:49:15,442 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:49:15,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890368698] [2022-07-13 22:49:15,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890368698] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:49:15,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:49:15,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:49:15,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738422472] [2022-07-13 22:49:15,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:49:15,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:49:15,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:49:15,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:49:15,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:49:15,443 INFO L87 Difference]: Start difference. First operand 170 states and 203 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-13 22:49:15,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:49:15,465 INFO L93 Difference]: Finished difference Result 233 states and 275 transitions. [2022-07-13 22:49:15,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:49:15,466 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 153 [2022-07-13 22:49:15,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:49:15,467 INFO L225 Difference]: With dead ends: 233 [2022-07-13 22:49:15,467 INFO L226 Difference]: Without dead ends: 175 [2022-07-13 22:49:15,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:49:15,468 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 2 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 748 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 [2022-07-13 22:49:15,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 748 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:49:15,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-07-13 22:49:15,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2022-07-13 22:49:15,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 115 states have (on average 1.1217391304347826) internal successors, (129), 117 states have internal predecessors, (129), 39 states have call successors, (39), 18 states have call predecessors, (39), 20 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2022-07-13 22:49:15,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 210 transitions. [2022-07-13 22:49:15,474 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 210 transitions. Word has length 153 [2022-07-13 22:49:15,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:49:15,474 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 210 transitions. [2022-07-13 22:49:15,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-13 22:49:15,474 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 210 transitions. [2022-07-13 22:49:15,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-13 22:49:15,476 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:49:15,476 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-07-13 22:49:15,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 22:49:15,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:49:15,696 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:49:15,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:49:15,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1991721113, now seen corresponding path program 1 times [2022-07-13 22:49:15,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:49:15,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436008538] [2022-07-13 22:49:15,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:49:15,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:49:15,749 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:49:15,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1448054065] [2022-07-13 22:49:15,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:49:15,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:49:15,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:49:15,750 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) [2022-07-13 22:49:15,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 22:49:16,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:16,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 2870 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 22:49:16,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:49:16,297 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-07-13 22:49:16,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:49:16,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:49:16,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436008538] [2022-07-13 22:49:16,298 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:49:16,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448054065] [2022-07-13 22:49:16,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448054065] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:49:16,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:49:16,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 22:49:16,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633116840] [2022-07-13 22:49:16,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:49:16,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:49:16,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:49:16,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:49:16,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:49:16,299 INFO L87 Difference]: Start difference. First operand 175 states and 210 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2022-07-13 22:49:16,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:49:16,444 INFO L93 Difference]: Finished difference Result 233 states and 274 transitions. [2022-07-13 22:49:16,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 22:49:16,444 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 159 [2022-07-13 22:49:16,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:49:16,445 INFO L225 Difference]: With dead ends: 233 [2022-07-13 22:49:16,445 INFO L226 Difference]: Without dead ends: 175 [2022-07-13 22:49:16,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:49:16,446 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 1 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:49:16,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 570 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:49:16,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-07-13 22:49:16,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 170. [2022-07-13 22:49:16,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 111 states have (on average 1.117117117117117) internal successors, (124), 113 states have internal predecessors, (124), 39 states have call successors, (39), 18 states have call predecessors, (39), 19 states have return successors, (39), 38 states have call predecessors, (39), 38 states have call successors, (39) [2022-07-13 22:49:16,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 202 transitions. [2022-07-13 22:49:16,452 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 202 transitions. Word has length 159 [2022-07-13 22:49:16,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:49:16,452 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 202 transitions. [2022-07-13 22:49:16,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2022-07-13 22:49:16,452 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 202 transitions. [2022-07-13 22:49:16,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-13 22:49:16,453 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:49:16,454 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:49:16,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 22:49:16,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:49:16,674 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:49:16,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:49:16,675 INFO L85 PathProgramCache]: Analyzing trace with hash -813903192, now seen corresponding path program 1 times [2022-07-13 22:49:16,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:49:16,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803117292] [2022-07-13 22:49:16,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:49:16,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:49:16,729 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:49:16,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2090620168] [2022-07-13 22:49:16,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:49:16,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:49:16,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:49:16,731 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) [2022-07-13 22:49:16,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 22:49:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:17,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 2918 conjuncts, 45 conjunts are in the unsatisfiable core [2022-07-13 22:49:17,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:49:17,366 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-07-13 22:49:17,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:49:17,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:49:17,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803117292] [2022-07-13 22:49:17,367 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:49:17,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090620168] [2022-07-13 22:49:17,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090620168] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:49:17,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:49:17,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-13 22:49:17,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85022846] [2022-07-13 22:49:17,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:49:17,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 22:49:17,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:49:17,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 22:49:17,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-13 22:49:17,369 INFO L87 Difference]: Start difference. First operand 170 states and 202 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, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-13 22:49:17,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:49:17,705 INFO L93 Difference]: Finished difference Result 237 states and 276 transitions. [2022-07-13 22:49:17,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 22:49:17,706 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, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25) Word has length 166 [2022-07-13 22:49:17,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:49:17,707 INFO L225 Difference]: With dead ends: 237 [2022-07-13 22:49:17,707 INFO L226 Difference]: Without dead ends: 168 [2022-07-13 22:49:17,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-07-13 22:49:17,707 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 5 mSDsluCounter, 1659 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1845 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:49:17,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1845 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 22:49:17,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-07-13 22:49:17,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2022-07-13 22:49:17,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 110 states have (on average 1.1) internal successors, (121), 112 states have internal predecessors, (121), 38 states have call successors, (38), 18 states have call predecessors, (38), 19 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2022-07-13 22:49:17,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 197 transitions. [2022-07-13 22:49:17,747 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 197 transitions. Word has length 166 [2022-07-13 22:49:17,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:49:17,747 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 197 transitions. [2022-07-13 22:49:17,747 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, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-13 22:49:17,747 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 197 transitions. [2022-07-13 22:49:17,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-13 22:49:17,749 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:49:17,749 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 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, 1, 1] [2022-07-13 22:49:17,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 22:49:17,951 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,SelfDestructingSolverStorable12 [2022-07-13 22:49:17,952 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:49:17,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:49:17,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1768858678, now seen corresponding path program 1 times [2022-07-13 22:49:17,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:49:17,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731259247] [2022-07-13 22:49:17,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:49:17,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:49:18,027 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:49:18,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2094586174] [2022-07-13 22:49:18,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:49:18,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:49:18,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:49:18,029 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) [2022-07-13 22:49:18,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 22:49:18,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:18,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 3100 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 22:49:18,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:49:18,740 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-07-13 22:49:18,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:49:18,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:49:18,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731259247] [2022-07-13 22:49:18,741 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:49:18,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094586174] [2022-07-13 22:49:18,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094586174] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:49:18,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:49:18,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 22:49:18,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783569088] [2022-07-13 22:49:18,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:49:18,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:49:18,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:49:18,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:49:18,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:49:18,743 INFO L87 Difference]: Start difference. First operand 168 states and 197 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-13 22:49:18,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:49:18,769 INFO L93 Difference]: Finished difference Result 324 states and 374 transitions. [2022-07-13 22:49:18,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 22:49:18,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 191 [2022-07-13 22:49:18,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:49:18,772 INFO L225 Difference]: With dead ends: 324 [2022-07-13 22:49:18,772 INFO L226 Difference]: Without dead ends: 177 [2022-07-13 22:49:18,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:49:18,773 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 15 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:49:18,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 555 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:49:18,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-07-13 22:49:18,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 171. [2022-07-13 22:49:18,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 113 states have (on average 1.0973451327433628) internal successors, (124), 115 states have internal predecessors, (124), 38 states have call successors, (38), 18 states have call predecessors, (38), 19 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2022-07-13 22:49:18,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 200 transitions. [2022-07-13 22:49:18,779 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 200 transitions. Word has length 191 [2022-07-13 22:49:18,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:49:18,779 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 200 transitions. [2022-07-13 22:49:18,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-13 22:49:18,779 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 200 transitions. [2022-07-13 22:49:18,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-13 22:49:18,780 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:49:18,781 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 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, 1, 1] [2022-07-13 22:49:18,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 22:49:19,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:49:19,003 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:49:19,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:49:19,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1342304180, now seen corresponding path program 1 times [2022-07-13 22:49:19,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:49:19,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121501181] [2022-07-13 22:49:19,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:49:19,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:49:19,076 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:49:19,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1073328060] [2022-07-13 22:49:19,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:49:19,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:49:19,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:49:19,105 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) [2022-07-13 22:49:19,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 22:49:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:19,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 3098 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-13 22:49:19,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:49:19,761 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-07-13 22:49:19,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:49:19,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:49:19,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121501181] [2022-07-13 22:49:19,761 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:49:19,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073328060] [2022-07-13 22:49:19,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073328060] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:49:19,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:49:19,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:49:19,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128003965] [2022-07-13 22:49:19,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:49:19,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:49:19,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:49:19,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:49:19,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:49:19,763 INFO L87 Difference]: Start difference. First operand 171 states and 200 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-13 22:49:19,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:49:19,812 INFO L93 Difference]: Finished difference Result 324 states and 371 transitions. [2022-07-13 22:49:19,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:49:19,813 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 191 [2022-07-13 22:49:19,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:49:19,814 INFO L225 Difference]: With dead ends: 324 [2022-07-13 22:49:19,814 INFO L226 Difference]: Without dead ends: 181 [2022-07-13 22:49:19,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:49:19,816 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 22 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:49:19,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 726 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:49:19,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-07-13 22:49:19,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 171. [2022-07-13 22:49:19,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 113 states have (on average 1.0884955752212389) internal successors, (123), 115 states have internal predecessors, (123), 38 states have call successors, (38), 18 states have call predecessors, (38), 19 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2022-07-13 22:49:19,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 199 transitions. [2022-07-13 22:49:19,822 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 199 transitions. Word has length 191 [2022-07-13 22:49:19,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:49:19,823 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 199 transitions. [2022-07-13 22:49:19,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-13 22:49:19,823 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 199 transitions. [2022-07-13 22:49:19,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-07-13 22:49:19,824 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:49:19,824 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 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, 1, 1, 1] [2022-07-13 22:49:19,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 22:49:20,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:49:20,045 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:49:20,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:49:20,046 INFO L85 PathProgramCache]: Analyzing trace with hash 538724999, now seen corresponding path program 1 times [2022-07-13 22:49:20,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:49:20,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17010034] [2022-07-13 22:49:20,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:49:20,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:49:20,122 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:49:20,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1352897542] [2022-07-13 22:49:20,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:49:20,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:49:20,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:49:20,124 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:49:20,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 22:49:23,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:49:23,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 3102 conjuncts, 288 conjunts are in the unsatisfiable core [2022-07-13 22:49:23,947 INFO L286 TraceCheckSpWp]: Computing forward predicates...