./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.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_priority_queue_init_dynamic_harness-1.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 f4db5fb03820aea666082345ea177387bf1c218ce33dad19402cb646ed5abf58 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:53:20,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:53:20,505 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:53:20,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:53:20,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:53:20,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:53:20,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:53:20,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:53:20,555 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:53:20,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:53:20,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:53:20,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:53:20,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:53:20,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:53:20,565 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:53:20,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:53:20,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:53:20,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:53:20,572 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:53:20,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:53:20,579 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:53:20,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:53:20,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:53:20,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:53:20,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:53:20,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:53:20,589 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:53:20,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:53:20,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:53:20,591 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:53:20,592 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:53:20,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:53:20,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:53:20,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:53:20,595 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:53:20,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:53:20,597 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:53:20,598 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:53:20,598 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:53:20,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:53:20,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:53:20,601 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:53:20,601 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-13 22:53:20,627 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:53:20,628 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:53:20,628 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:53:20,628 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:53:20,629 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:53:20,629 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:53:20,630 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:53:20,630 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:53:20,630 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:53:20,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:53:20,631 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:53:20,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:53:20,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:53:20,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:53:20,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:53:20,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:53:20,633 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:53:20,633 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:53:20,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:53:20,633 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:53:20,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:53:20,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:53:20,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:53:20,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:53:20,634 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:53:20,635 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:53:20,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:53:20,635 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:53:20,635 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:53:20,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:53:20,636 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4db5fb03820aea666082345ea177387bf1c218ce33dad19402cb646ed5abf58 [2022-07-13 22:53:20,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:53:20,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:53:20,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:53:20,897 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:53:20,898 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:53:20,899 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i [2022-07-13 22:53:20,987 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0bfd0fe5/51da624324544467976f2e52b49053d4/FLAG7ac46b6e3 [2022-07-13 22:53:21,619 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:53:21,620 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i [2022-07-13 22:53:21,651 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0bfd0fe5/51da624324544467976f2e52b49053d4/FLAG7ac46b6e3 [2022-07-13 22:53:21,935 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0bfd0fe5/51da624324544467976f2e52b49053d4 [2022-07-13 22:53:21,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:53:21,938 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:53:21,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:53:21,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:53:21,945 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:53:21,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:53:21" (1/1) ... [2022-07-13 22:53:21,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3051f734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:53:21, skipping insertion in model container [2022-07-13 22:53:21,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:53:21" (1/1) ... [2022-07-13 22:53:21,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:53:22,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:53:22,265 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_priority_queue_init_dynamic_harness-1.i[4505,4518] [2022-07-13 22:53:22,270 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_priority_queue_init_dynamic_harness-1.i[4565,4578] [2022-07-13 22:53:22,865 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-13 22:53:22,939 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:22,942 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:22,942 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:22,943 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:22,944 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:22,967 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:22,970 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:22,972 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:22,972 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:23,302 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:53:23,303 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:53:23,304 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:53:23,308 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:53:23,309 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:53:23,310 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:53:23,310 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:53:23,311 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:53:23,311 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:53:23,311 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:53:23,466 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:23,467 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:23,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:53:23,555 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:53:23,569 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_priority_queue_init_dynamic_harness-1.i[4505,4518] [2022-07-13 22:53:23,569 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_priority_queue_init_dynamic_harness-1.i[4565,4578] [2022-07-13 22:53:23,608 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-13 22:53:23,628 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:23,629 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:23,629 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:23,630 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:23,630 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:23,634 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:23,635 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:23,635 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:23,636 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:23,666 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:53:23,668 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:53:23,669 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:53:23,669 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:53:23,670 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:53:23,670 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:53:23,671 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:53:23,671 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:53:23,671 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:53:23,672 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:53:23,698 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:23,704 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:53:23,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:53:23,929 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:53:23,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:53:23 WrapperNode [2022-07-13 22:53:23,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:53:23,931 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:53:23,931 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:53:23,931 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:53:23,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:53:23" (1/1) ... [2022-07-13 22:53:24,016 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:53:23" (1/1) ... [2022-07-13 22:53:24,077 INFO L137 Inliner]: procedures = 689, calls = 1517, calls flagged for inlining = 52, calls inlined = 9, statements flattened = 742 [2022-07-13 22:53:24,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:53:24,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:53:24,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:53:24,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:53:24,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:53:23" (1/1) ... [2022-07-13 22:53:24,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:53:23" (1/1) ... [2022-07-13 22:53:24,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:53:23" (1/1) ... [2022-07-13 22:53:24,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:53:23" (1/1) ... [2022-07-13 22:53:24,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:53:23" (1/1) ... [2022-07-13 22:53:24,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:53:23" (1/1) ... [2022-07-13 22:53:24,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:53:23" (1/1) ... [2022-07-13 22:53:24,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:53:24,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:53:24,160 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:53:24,160 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:53:24,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:53:23" (1/1) ... [2022-07-13 22:53:24,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:53:24,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:53:24,192 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 22:53:24,211 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 22:53:24,243 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-07-13 22:53:24,243 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-07-13 22:53:24,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:53:24,243 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-07-13 22:53:24,243 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-07-13 22:53:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-13 22:53:24,244 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-13 22:53:24,244 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-07-13 22:53:24,244 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-07-13 22:53:24,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:53:24,245 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-13 22:53:24,246 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-13 22:53:24,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-13 22:53:24,247 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-13 22:53:24,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 22:53:24,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:53:24,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 22:53:24,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:53:24,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:53:24,248 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-13 22:53:24,248 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-13 22:53:24,248 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2022-07-13 22:53:24,248 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2022-07-13 22:53:24,248 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-13 22:53:24,248 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-13 22:53:24,249 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-07-13 22:53:24,249 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-07-13 22:53:24,249 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-07-13 22:53:24,249 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-07-13 22:53:24,250 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-13 22:53:24,250 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-13 22:53:24,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:53:24,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 22:53:24,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-13 22:53:24,251 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-13 22:53:24,251 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-13 22:53:24,251 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-13 22:53:24,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-13 22:53:24,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:53:24,252 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2022-07-13 22:53:24,252 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2022-07-13 22:53:24,252 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2022-07-13 22:53:24,252 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2022-07-13 22:53:24,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:53:24,528 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:53:24,530 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:53:25,289 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:53:25,301 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:53:25,301 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-13 22:53:25,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:53:25 BoogieIcfgContainer [2022-07-13 22:53:25,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:53:25,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:53:25,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:53:25,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:53:25,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:53:21" (1/3) ... [2022-07-13 22:53:25,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e55dd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:53:25, skipping insertion in model container [2022-07-13 22:53:25,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:53:23" (2/3) ... [2022-07-13 22:53:25,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e55dd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:53:25, skipping insertion in model container [2022-07-13 22:53:25,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:53:25" (3/3) ... [2022-07-13 22:53:25,312 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_init_dynamic_harness-1.i [2022-07-13 22:53:25,325 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:53:25,326 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:53:25,379 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:53:25,388 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@4dd5cca5, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@14af648c [2022-07-13 22:53:25,389 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 22:53:25,394 INFO L276 IsEmpty]: Start isEmpty. Operand has 205 states, 133 states have (on average 1.255639097744361) internal successors, (167), 133 states have internal predecessors, (167), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-07-13 22:53:25,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-13 22:53:25,406 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:53:25,407 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2022-07-13 22:53:25,407 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:53:25,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:53:25,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1293047729, now seen corresponding path program 1 times [2022-07-13 22:53:25,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:53:25,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210853557] [2022-07-13 22:53:25,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:53:25,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:53:25,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:25,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:53:25,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:25,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:53:25,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:25,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:53:25,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:25,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 22:53:25,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:25,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 22:53:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:26,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:53:26,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:53:26,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210853557] [2022-07-13 22:53:26,011 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-07-13 22:53:26,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219454304] [2022-07-13 22:53:26,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:53:26,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:53:26,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:53:26,019 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 22:53:26,021 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 22:53:26,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:26,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 2214 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-13 22:53:26,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:53:26,555 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-07-13 22:53:26,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:53:26,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219454304] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:53:26,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:53:26,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 22:53:26,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065062044] [2022-07-13 22:53:26,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:53:26,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 22:53:26,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:53:26,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 22:53:26,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:53:26,600 INFO L87 Difference]: Start difference. First operand has 205 states, 133 states have (on average 1.255639097744361) internal successors, (167), 133 states have internal predecessors, (167), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-13 22:53:26,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:53:26,665 INFO L93 Difference]: Finished difference Result 401 states and 585 transitions. [2022-07-13 22:53:26,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 22:53:26,667 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 112 [2022-07-13 22:53:26,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:53:26,687 INFO L225 Difference]: With dead ends: 401 [2022-07-13 22:53:26,687 INFO L226 Difference]: Without dead ends: 198 [2022-07-13 22:53:26,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 125 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 22:53:26,700 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:53:26,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:53:26,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-07-13 22:53:26,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2022-07-13 22:53:26,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 125 states have (on average 1.224) internal successors, (153), 127 states have internal predecessors, (153), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-07-13 22:53:26,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 263 transitions. [2022-07-13 22:53:26,771 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 263 transitions. Word has length 112 [2022-07-13 22:53:26,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:53:26,772 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 263 transitions. [2022-07-13 22:53:26,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-13 22:53:26,773 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 263 transitions. [2022-07-13 22:53:26,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 22:53:26,782 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:53:26,783 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:53:26,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 22:53:27,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-13 22:53:27,004 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:53:27,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:53:27,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1403140028, now seen corresponding path program 1 times [2022-07-13 22:53:27,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:53:27,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373060086] [2022-07-13 22:53:27,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:53:27,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:53:27,092 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:53:27,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1531406244] [2022-07-13 22:53:27,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:53:27,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:53:27,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:53:27,095 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 22:53:27,096 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 22:53:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:27,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 2368 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 22:53:27,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:53:27,590 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2022-07-13 22:53:27,590 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:53:27,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:53:27,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373060086] [2022-07-13 22:53:27,591 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:53:27,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531406244] [2022-07-13 22:53:27,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531406244] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:53:27,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:53:27,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:53:27,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829311204] [2022-07-13 22:53:27,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:53:27,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:53:27,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:53:27,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:53:27,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:53:27,594 INFO L87 Difference]: Start difference. First operand 198 states and 263 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-13 22:53:27,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:53:27,641 INFO L93 Difference]: Finished difference Result 302 states and 404 transitions. [2022-07-13 22:53:27,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:53:27,642 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 146 [2022-07-13 22:53:27,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:53:27,646 INFO L225 Difference]: With dead ends: 302 [2022-07-13 22:53:27,646 INFO L226 Difference]: Without dead ends: 203 [2022-07-13 22:53:27,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 142 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 22:53:27,648 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 2 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1032 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 22:53:27,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1032 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:53:27,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-07-13 22:53:27,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2022-07-13 22:53:27,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 129 states have (on average 1.2170542635658914) internal successors, (157), 131 states have internal predecessors, (157), 56 states have call successors, (56), 16 states have call predecessors, (56), 17 states have return successors, (57), 55 states have call predecessors, (57), 54 states have call successors, (57) [2022-07-13 22:53:27,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 270 transitions. [2022-07-13 22:53:27,664 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 270 transitions. Word has length 146 [2022-07-13 22:53:27,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:53:27,664 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 270 transitions. [2022-07-13 22:53:27,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-13 22:53:27,665 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 270 transitions. [2022-07-13 22:53:27,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-13 22:53:27,666 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:53:27,667 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:53:27,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 22:53:27,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-07-13 22:53:27,884 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:53:27,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:53:27,884 INFO L85 PathProgramCache]: Analyzing trace with hash 494695836, now seen corresponding path program 1 times [2022-07-13 22:53:27,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:53:27,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269146503] [2022-07-13 22:53:27,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:53:27,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:53:27,950 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:53:27,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [455924894] [2022-07-13 22:53:27,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:53:27,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:53:27,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:53:27,957 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 22:53:27,959 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 22:53:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:28,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 2388 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-13 22:53:28,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:53:28,519 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2022-07-13 22:53:28,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:53:28,715 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2022-07-13 22:53:28,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:53:28,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269146503] [2022-07-13 22:53:28,716 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:53:28,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455924894] [2022-07-13 22:53:28,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455924894] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 22:53:28,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:53:28,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 12 [2022-07-13 22:53:28,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765443377] [2022-07-13 22:53:28,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:53:28,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:53:28,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:53:28,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:53:28,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-13 22:53:28,719 INFO L87 Difference]: Start difference. First operand 203 states and 270 transitions. Second operand has 5 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2022-07-13 22:53:28,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:53:28,779 INFO L93 Difference]: Finished difference Result 211 states and 278 transitions. [2022-07-13 22:53:28,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:53:28,779 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 147 [2022-07-13 22:53:28,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:53:28,782 INFO L225 Difference]: With dead ends: 211 [2022-07-13 22:53:28,782 INFO L226 Difference]: Without dead ends: 209 [2022-07-13 22:53:28,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-13 22:53:28,783 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 4 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:53:28,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1029 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:53:28,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-07-13 22:53:28,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 208. [2022-07-13 22:53:28,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 132 states have (on average 1.2121212121212122) internal successors, (160), 135 states have internal predecessors, (160), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2022-07-13 22:53:28,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 275 transitions. [2022-07-13 22:53:28,804 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 275 transitions. Word has length 147 [2022-07-13 22:53:28,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:53:28,805 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 275 transitions. [2022-07-13 22:53:28,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2022-07-13 22:53:28,805 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 275 transitions. [2022-07-13 22:53:28,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-13 22:53:28,807 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:53:28,807 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:53:28,827 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 22:53:29,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:53:29,008 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:53:29,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:53:29,009 INFO L85 PathProgramCache]: Analyzing trace with hash 496542878, now seen corresponding path program 1 times [2022-07-13 22:53:29,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:53:29,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65604232] [2022-07-13 22:53:29,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:53:29,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:53:29,087 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:53:29,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [626010522] [2022-07-13 22:53:29,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:53:29,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:53:29,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:53:29,089 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 22:53:29,090 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 22:53:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:29,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 2393 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 22:53:29,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:53:29,547 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-07-13 22:53:29,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:53:29,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:53:29,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65604232] [2022-07-13 22:53:29,548 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:53:29,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626010522] [2022-07-13 22:53:29,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626010522] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:53:29,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:53:29,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:53:29,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861713001] [2022-07-13 22:53:29,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:53:29,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:53:29,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:53:29,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:53:29,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:53:29,551 INFO L87 Difference]: Start difference. First operand 208 states and 275 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-13 22:53:29,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:53:29,624 INFO L93 Difference]: Finished difference Result 401 states and 523 transitions. [2022-07-13 22:53:29,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:53:29,624 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 147 [2022-07-13 22:53:29,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:53:29,627 INFO L225 Difference]: With dead ends: 401 [2022-07-13 22:53:29,627 INFO L226 Difference]: Without dead ends: 208 [2022-07-13 22:53:29,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:53:29,631 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 13 mSDsluCounter, 1001 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:53:29,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1257 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:53:29,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-07-13 22:53:29,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2022-07-13 22:53:29,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 132 states have (on average 1.2045454545454546) internal successors, (159), 135 states have internal predecessors, (159), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2022-07-13 22:53:29,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 274 transitions. [2022-07-13 22:53:29,648 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 274 transitions. Word has length 147 [2022-07-13 22:53:29,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:53:29,650 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 274 transitions. [2022-07-13 22:53:29,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-13 22:53:29,650 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 274 transitions. [2022-07-13 22:53:29,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-13 22:53:29,652 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:53:29,652 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:53:29,683 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 22:53:29,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:53:29,867 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:53:29,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:53:29,868 INFO L85 PathProgramCache]: Analyzing trace with hash -50417486, now seen corresponding path program 1 times [2022-07-13 22:53:29,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:53:29,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770739913] [2022-07-13 22:53:29,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:53:29,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:53:29,923 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:53:29,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1320527072] [2022-07-13 22:53:29,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:53:29,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:53:29,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:53:29,925 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 22:53:29,927 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 22:53:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:30,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 2407 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 22:53:30,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:53:30,452 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-07-13 22:53:30,453 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:53:30,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:53:30,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770739913] [2022-07-13 22:53:30,468 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:53:30,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320527072] [2022-07-13 22:53:30,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320527072] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:53:30,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:53:30,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:53:30,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787214234] [2022-07-13 22:53:30,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:53:30,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:53:30,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:53:30,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:53:30,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:53:30,470 INFO L87 Difference]: Start difference. First operand 208 states and 274 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-13 22:53:30,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:53:30,486 INFO L93 Difference]: Finished difference Result 397 states and 520 transitions. [2022-07-13 22:53:30,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:53:30,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 149 [2022-07-13 22:53:30,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:53:30,489 INFO L225 Difference]: With dead ends: 397 [2022-07-13 22:53:30,489 INFO L226 Difference]: Without dead ends: 210 [2022-07-13 22:53:30,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 147 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 22:53:30,501 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 1 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:53:30,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 516 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:53:30,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-07-13 22:53:30,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 209. [2022-07-13 22:53:30,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 133 states have (on average 1.2030075187969924) internal successors, (160), 136 states have internal predecessors, (160), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2022-07-13 22:53:30,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 275 transitions. [2022-07-13 22:53:30,510 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 275 transitions. Word has length 149 [2022-07-13 22:53:30,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:53:30,510 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 275 transitions. [2022-07-13 22:53:30,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-13 22:53:30,511 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 275 transitions. [2022-07-13 22:53:30,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-13 22:53:30,522 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:53:30,522 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:53:30,563 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 22:53:30,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:53:30,739 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:53:30,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:53:30,740 INFO L85 PathProgramCache]: Analyzing trace with hash 2024331122, now seen corresponding path program 1 times [2022-07-13 22:53:30,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:53:30,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883495831] [2022-07-13 22:53:30,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:53:30,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:53:30,804 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:53:30,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [292484150] [2022-07-13 22:53:30,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:53:30,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:53:30,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:53:30,806 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 22:53:30,808 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 22:53:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:53:31,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 2445 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-13 22:53:31,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:53:31,388 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 159 proven. 1 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-07-13 22:53:31,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:53:31,734 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2022-07-13 22:53:31,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:53:31,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883495831] [2022-07-13 22:53:31,734 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:53:31,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292484150] [2022-07-13 22:53:31,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292484150] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:53:31,734 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:53:31,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-07-13 22:53:31,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488443014] [2022-07-13 22:53:31,735 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:53:31,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 22:53:31,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:53:31,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 22:53:31,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-13 22:53:31,736 INFO L87 Difference]: Start difference. First operand 209 states and 275 transitions. Second operand has 13 states, 11 states have (on average 8.0) internal successors, (88), 13 states have internal predecessors, (88), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2022-07-13 22:53:31,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:53:31,871 INFO L93 Difference]: Finished difference Result 406 states and 527 transitions. [2022-07-13 22:53:31,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:53:31,873 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 8.0) internal successors, (88), 13 states have internal predecessors, (88), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) Word has length 153 [2022-07-13 22:53:31,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:53:31,874 INFO L225 Difference]: With dead ends: 406 [2022-07-13 22:53:31,874 INFO L226 Difference]: Without dead ends: 212 [2022-07-13 22:53:31,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 292 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-07-13 22:53:31,875 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 35 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1759 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:53:31,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 1759 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:53:31,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-07-13 22:53:31,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 211. [2022-07-13 22:53:31,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 135 states have (on average 1.2) internal successors, (162), 138 states have internal predecessors, (162), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2022-07-13 22:53:31,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 277 transitions. [2022-07-13 22:53:31,883 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 277 transitions. Word has length 153 [2022-07-13 22:53:31,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:53:31,887 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 277 transitions. [2022-07-13 22:53:31,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 8.0) internal successors, (88), 13 states have internal predecessors, (88), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2022-07-13 22:53:31,888 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 277 transitions. [2022-07-13 22:53:31,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-13 22:53:31,902 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:53:31,902 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:53:31,929 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 22:53:32,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:53:32,103 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:53:32,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:53:32,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1553173810, now seen corresponding path program 2 times [2022-07-13 22:53:32,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:53:32,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192649442] [2022-07-13 22:53:32,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:53:32,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:53:32,159 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:53:32,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [809058924] [2022-07-13 22:53:32,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:53:32,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:53:32,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:53:32,160 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 22:53:32,162 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 22:53:32,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 22:53:32,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:53:32,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 2483 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-13 22:53:32,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:53:33,099 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 167 proven. 4 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-07-13 22:53:33,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:53:33,507 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2022-07-13 22:53:33,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:53:33,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192649442] [2022-07-13 22:53:33,507 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:53:33,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809058924] [2022-07-13 22:53:33,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809058924] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:53:33,508 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:53:33,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-07-13 22:53:33,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726421829] [2022-07-13 22:53:33,508 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:53:33,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 22:53:33,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:53:33,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 22:53:33,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-13 22:53:33,510 INFO L87 Difference]: Start difference. First operand 211 states and 277 transitions. Second operand has 15 states, 13 states have (on average 7.076923076923077) internal successors, (92), 15 states have internal predecessors, (92), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2022-07-13 22:53:33,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:53:33,681 INFO L93 Difference]: Finished difference Result 410 states and 531 transitions. [2022-07-13 22:53:33,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:53:33,682 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 7.076923076923077) internal successors, (92), 15 states have internal predecessors, (92), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) Word has length 157 [2022-07-13 22:53:33,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:53:33,686 INFO L225 Difference]: With dead ends: 410 [2022-07-13 22:53:33,686 INFO L226 Difference]: Without dead ends: 214 [2022-07-13 22:53:33,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 298 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-07-13 22:53:33,692 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 29 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 2010 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:53:33,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 2010 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:53:33,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-07-13 22:53:33,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 213. [2022-07-13 22:53:33,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 137 states have (on average 1.197080291970803) internal successors, (164), 140 states have internal predecessors, (164), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2022-07-13 22:53:33,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 279 transitions. [2022-07-13 22:53:33,713 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 279 transitions. Word has length 157 [2022-07-13 22:53:33,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:53:33,714 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 279 transitions. [2022-07-13 22:53:33,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 7.076923076923077) internal successors, (92), 15 states have internal predecessors, (92), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2022-07-13 22:53:33,715 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 279 transitions. [2022-07-13 22:53:33,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-13 22:53:33,718 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:53:33,718 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:53:33,751 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 22:53:33,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:53:33,931 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:53:33,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:53:33,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1663013362, now seen corresponding path program 3 times [2022-07-13 22:53:33,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:53:33,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255184544] [2022-07-13 22:53:33,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:53:33,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:53:34,032 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:53:34,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [346303998] [2022-07-13 22:53:34,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 22:53:34,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:53:34,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:53:34,036 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 22:53:34,037 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 22:53:35,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-07-13 22:53:35,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:53:35,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 2109 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-13 22:53:35,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:53:35,959 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 49 proven. 9 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2022-07-13 22:53:35,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:53:36,342 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 34 proven. 9 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2022-07-13 22:53:36,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:53:36,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255184544] [2022-07-13 22:53:36,343 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:53:36,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346303998] [2022-07-13 22:53:36,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346303998] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:53:36,343 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:53:36,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-07-13 22:53:36,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026576291] [2022-07-13 22:53:36,344 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:53:36,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-13 22:53:36,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:53:36,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-13 22:53:36,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-07-13 22:53:36,346 INFO L87 Difference]: Start difference. First operand 213 states and 279 transitions. Second operand has 17 states, 15 states have (on average 5.533333333333333) internal successors, (83), 17 states have internal predecessors, (83), 6 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) [2022-07-13 22:53:36,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:53:36,565 INFO L93 Difference]: Finished difference Result 414 states and 535 transitions. [2022-07-13 22:53:36,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 22:53:36,566 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 5.533333333333333) internal successors, (83), 17 states have internal predecessors, (83), 6 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) Word has length 161 [2022-07-13 22:53:36,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:53:36,568 INFO L225 Difference]: With dead ends: 414 [2022-07-13 22:53:36,568 INFO L226 Difference]: Without dead ends: 216 [2022-07-13 22:53:36,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 304 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2022-07-13 22:53:36,570 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 37 mSDsluCounter, 2258 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 2513 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:53:36,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 2513 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:53:36,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-07-13 22:53:36,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 215. [2022-07-13 22:53:36,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 139 states have (on average 1.1942446043165467) internal successors, (166), 142 states have internal predecessors, (166), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2022-07-13 22:53:36,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 281 transitions. [2022-07-13 22:53:36,579 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 281 transitions. Word has length 161 [2022-07-13 22:53:36,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:53:36,580 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 281 transitions. [2022-07-13 22:53:36,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 5.533333333333333) internal successors, (83), 17 states have internal predecessors, (83), 6 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) [2022-07-13 22:53:36,580 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 281 transitions. [2022-07-13 22:53:36,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-07-13 22:53:36,582 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:53:36,582 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:53:36,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-13 22:53:36,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-13 22:53:36,791 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:53:36,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:53:36,792 INFO L85 PathProgramCache]: Analyzing trace with hash -650271310, now seen corresponding path program 4 times [2022-07-13 22:53:36,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:53:36,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211700654] [2022-07-13 22:53:36,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:53:36,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:53:36,872 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:53:36,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [134615392] [2022-07-13 22:53:36,872 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 22:53:36,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:53:36,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:53:36,874 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:53:36,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-13 22:53:37,463 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 22:53:37,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:53:37,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 2559 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-13 22:53:37,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:53:37,585 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 195 proven. 16 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-07-13 22:53:37,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:53:37,977 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-07-13 22:53:37,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:53:37,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211700654] [2022-07-13 22:53:37,977 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:53:37,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134615392] [2022-07-13 22:53:37,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134615392] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:53:37,978 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:53:37,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-07-13 22:53:37,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326787152] [2022-07-13 22:53:37,978 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:53:37,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-13 22:53:37,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:53:37,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-13 22:53:37,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-07-13 22:53:37,979 INFO L87 Difference]: Start difference. First operand 215 states and 281 transitions. Second operand has 19 states, 17 states have (on average 5.882352941176471) internal successors, (100), 19 states have internal predecessors, (100), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2022-07-13 22:53:38,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:53:38,203 INFO L93 Difference]: Finished difference Result 418 states and 539 transitions. [2022-07-13 22:53:38,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 22:53:38,204 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 5.882352941176471) internal successors, (100), 19 states have internal predecessors, (100), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) Word has length 165 [2022-07-13 22:53:38,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:53:38,207 INFO L225 Difference]: With dead ends: 418 [2022-07-13 22:53:38,207 INFO L226 Difference]: Without dead ends: 218 [2022-07-13 22:53:38,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 310 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2022-07-13 22:53:38,210 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 38 mSDsluCounter, 3011 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 3266 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 22:53:38,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 3266 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 22:53:38,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-07-13 22:53:38,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 217. [2022-07-13 22:53:38,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 141 states have (on average 1.1914893617021276) internal successors, (168), 144 states have internal predecessors, (168), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2022-07-13 22:53:38,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 283 transitions. [2022-07-13 22:53:38,225 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 283 transitions. Word has length 165 [2022-07-13 22:53:38,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:53:38,225 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 283 transitions. [2022-07-13 22:53:38,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 5.882352941176471) internal successors, (100), 19 states have internal predecessors, (100), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2022-07-13 22:53:38,227 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 283 transitions. [2022-07-13 22:53:38,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-13 22:53:38,230 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:53:38,230 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:53:38,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-13 22:53:38,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:53:38,447 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:53:38,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:53:38,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1517193330, now seen corresponding path program 5 times [2022-07-13 22:53:38,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:53:38,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353952737] [2022-07-13 22:53:38,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:53:38,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:53:38,507 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:53:38,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1346681270] [2022-07-13 22:53:38,507 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-13 22:53:38,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:53:38,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:53:38,508 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:53:38,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-13 22:53:39,433 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-07-13 22:53:39,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:53:39,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-13 22:53:39,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:53:39,632 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 215 proven. 25 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-07-13 22:53:39,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:53:40,118 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2022-07-13 22:53:40,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:53:40,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353952737] [2022-07-13 22:53:40,119 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:53:40,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346681270] [2022-07-13 22:53:40,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346681270] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:53:40,119 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:53:40,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2022-07-13 22:53:40,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896383343] [2022-07-13 22:53:40,121 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:53:40,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-13 22:53:40,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:53:40,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-13 22:53:40,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-07-13 22:53:40,122 INFO L87 Difference]: Start difference. First operand 217 states and 283 transitions. Second operand has 21 states, 19 states have (on average 5.473684210526316) internal successors, (104), 21 states have internal predecessors, (104), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2022-07-13 22:53:40,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:53:40,400 INFO L93 Difference]: Finished difference Result 422 states and 543 transitions. [2022-07-13 22:53:40,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 22:53:40,402 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 5.473684210526316) internal successors, (104), 21 states have internal predecessors, (104), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) Word has length 169 [2022-07-13 22:53:40,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:53:40,404 INFO L225 Difference]: With dead ends: 422 [2022-07-13 22:53:40,405 INFO L226 Difference]: Without dead ends: 220 [2022-07-13 22:53:40,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 316 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2022-07-13 22:53:40,406 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 41 mSDsluCounter, 3010 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 3265 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 22:53:40,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 3265 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 22:53:40,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-07-13 22:53:40,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 219. [2022-07-13 22:53:40,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 143 states have (on average 1.1888111888111887) internal successors, (170), 146 states have internal predecessors, (170), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2022-07-13 22:53:40,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 285 transitions. [2022-07-13 22:53:40,421 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 285 transitions. Word has length 169 [2022-07-13 22:53:40,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:53:40,422 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 285 transitions. [2022-07-13 22:53:40,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 5.473684210526316) internal successors, (104), 21 states have internal predecessors, (104), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2022-07-13 22:53:40,423 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 285 transitions. [2022-07-13 22:53:40,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-07-13 22:53:40,424 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:53:40,425 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:53:40,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-13 22:53:40,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-13 22:53:40,633 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:53:40,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:53:40,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1933379022, now seen corresponding path program 6 times [2022-07-13 22:53:40,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:53:40,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055863263] [2022-07-13 22:53:40,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:53:40,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:53:40,695 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:53:40,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [387431326] [2022-07-13 22:53:40,695 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-13 22:53:40,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:53:40,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:53:40,697 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:53:40,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process