./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 156ab79a85c4b985ced0d661dede185c573e9f8e4fcba49b00d62d883c71bbed --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 09:26:46,456 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 09:26:46,458 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 09:26:46,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 09:26:46,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 09:26:46,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 09:26:46,502 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 09:26:46,505 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 09:26:46,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 09:26:46,510 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 09:26:46,511 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 09:26:46,513 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 09:26:46,513 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 09:26:46,515 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 09:26:46,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 09:26:46,521 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 09:26:46,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 09:26:46,522 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 09:26:46,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 09:26:46,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 09:26:46,530 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 09:26:46,531 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 09:26:46,532 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 09:26:46,533 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 09:26:46,535 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 09:26:46,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 09:26:46,546 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 09:26:46,547 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 09:26:46,547 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 09:26:46,548 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 09:26:46,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 09:26:46,549 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 09:26:46,550 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 09:26:46,551 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 09:26:46,552 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 09:26:46,553 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 09:26:46,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 09:26:46,554 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 09:26:46,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 09:26:46,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 09:26:46,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 09:26:46,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 09:26:46,561 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 09:26:46,590 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 09:26:46,590 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 09:26:46,591 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 09:26:46,591 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 09:26:46,591 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 09:26:46,592 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 09:26:46,592 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 09:26:46,592 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 09:26:46,593 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 09:26:46,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 09:26:46,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 09:26:46,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 09:26:46,594 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 09:26:46,594 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 09:26:46,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 09:26:46,595 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 09:26:46,595 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 09:26:46,595 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 09:26:46,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 09:26:46,596 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 09:26:46,596 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 09:26:46,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:26:46,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 09:26:46,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 09:26:46,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 09:26:46,597 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 09:26:46,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 09:26:46,597 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 09:26:46,597 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 09:26:46,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 09:26:46,598 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 156ab79a85c4b985ced0d661dede185c573e9f8e4fcba49b00d62d883c71bbed [2022-07-21 09:26:46,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 09:26:46,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 09:26:46,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 09:26:46,910 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 09:26:46,913 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 09:26:46,914 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i [2022-07-21 09:26:46,982 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15c752b74/d2f28b00693a405a8009f6168a6a27f7/FLAGdbde96df3 [2022-07-21 09:26:47,515 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 09:26:47,516 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i [2022-07-21 09:26:47,541 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15c752b74/d2f28b00693a405a8009f6168a6a27f7/FLAGdbde96df3 [2022-07-21 09:26:48,005 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15c752b74/d2f28b00693a405a8009f6168a6a27f7 [2022-07-21 09:26:48,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 09:26:48,008 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 09:26:48,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 09:26:48,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 09:26:48,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 09:26:48,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:26:48" (1/1) ... [2022-07-21 09:26:48,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4090e036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:26:48, skipping insertion in model container [2022-07-21 09:26:48,015 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:26:48" (1/1) ... [2022-07-21 09:26:48,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 09:26:48,095 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 09:26:48,309 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_array_list_set_at_harness.i[4495,4508] [2022-07-21 09:26:48,314 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_array_list_set_at_harness.i[4555,4568] [2022-07-21 09:26:48,844 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:26:48,909 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:26:48,912 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:26:48,913 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:26:48,914 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:26:48,915 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:26:48,922 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:26:48,927 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:26:48,929 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:26:48,929 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:26:48,931 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:26:48,932 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:26:48,933 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:26:48,934 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:26:49,132 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:26:49,133 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:26:49,133 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:26:49,134 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:26:49,136 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:26:49,136 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:26:49,137 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:26:49,137 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:26:49,138 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:26:49,138 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:26:49,222 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:26:49,242 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:26:49,274 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:26:49,275 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:26:49,275 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:26:49,277 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:26:49,294 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 09:26:49,302 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_array_list_set_at_harness.i[4495,4508] [2022-07-21 09:26:49,302 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_array_list_set_at_harness.i[4555,4568] [2022-07-21 09:26:49,356 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:26:49,368 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:26:49,374 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:26:49,374 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:26:49,375 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:26:49,375 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:26:49,380 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:26:49,383 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:26:49,384 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:26:49,384 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:26:49,386 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:26:49,386 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:26:49,387 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:26:49,388 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:26:49,412 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:26:49,412 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:26:49,413 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:26:49,413 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:26:49,414 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:26:49,416 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:26:49,417 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:26:49,417 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:26:49,417 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:26:49,418 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:26:49,457 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:26:49,464 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:26:49,500 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:26:49,511 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:26:49,511 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:26:49,513 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:26:49,702 INFO L208 MainTranslator]: Completed translation [2022-07-21 09:26:49,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:26:49 WrapperNode [2022-07-21 09:26:49,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 09:26:49,704 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 09:26:49,704 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 09:26:49,704 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 09:26:49,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:26:49" (1/1) ... [2022-07-21 09:26:49,765 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:26:49" (1/1) ... [2022-07-21 09:26:49,841 INFO L137 Inliner]: procedures = 691, calls = 1681, calls flagged for inlining = 51, calls inlined = 11, statements flattened = 847 [2022-07-21 09:26:49,842 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 09:26:49,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 09:26:49,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 09:26:49,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 09:26:49,848 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:26:49" (1/1) ... [2022-07-21 09:26:49,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:26:49" (1/1) ... [2022-07-21 09:26:49,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:26:49" (1/1) ... [2022-07-21 09:26:49,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:26:49" (1/1) ... [2022-07-21 09:26:49,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:26:49" (1/1) ... [2022-07-21 09:26:49,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:26:49" (1/1) ... [2022-07-21 09:26:49,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:26:49" (1/1) ... [2022-07-21 09:26:49,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 09:26:49,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 09:26:49,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 09:26:49,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 09:26:49,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:26:49" (1/1) ... [2022-07-21 09:26:49,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:26:49,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:26:49,963 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 09:26:50,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 09:26:50,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 09:26:50,019 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-07-21 09:26:50,019 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-07-21 09:26:50,019 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-07-21 09:26:50,020 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-07-21 09:26:50,020 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-21 09:26:50,020 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-21 09:26:50,020 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-07-21 09:26:50,020 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-07-21 09:26:50,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 09:26:50,020 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-21 09:26:50,021 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-21 09:26:50,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-21 09:26:50,021 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-21 09:26:50,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 09:26:50,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 09:26:50,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 09:26:50,022 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-07-21 09:26:50,022 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-07-21 09:26:50,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 09:26:50,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 09:26:50,022 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-21 09:26:50,022 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-21 09:26:50,023 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-21 09:26:50,023 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-21 09:26:50,023 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-21 09:26:50,023 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-21 09:26:50,023 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-07-21 09:26:50,023 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-07-21 09:26:50,023 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-07-21 09:26:50,024 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-07-21 09:26:50,024 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-07-21 09:26:50,024 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-07-21 09:26:50,024 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 09:26:50,024 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 09:26:50,024 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-07-21 09:26:50,024 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-07-21 09:26:50,024 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-07-21 09:26:50,024 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-07-21 09:26:50,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 09:26:50,025 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-07-21 09:26:50,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-07-21 09:26:50,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 09:26:50,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 09:26:50,042 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-21 09:26:50,042 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-21 09:26:50,042 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-21 09:26:50,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-21 09:26:50,042 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-07-21 09:26:50,042 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-07-21 09:26:50,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 09:26:50,043 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-07-21 09:26:50,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-07-21 09:26:50,043 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_set_at [2022-07-21 09:26:50,043 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_set_at [2022-07-21 09:26:50,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 09:26:50,325 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 09:26:50,327 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 09:26:51,088 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 09:26:51,094 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 09:26:51,094 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 09:26:51,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:26:51 BoogieIcfgContainer [2022-07-21 09:26:51,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 09:26:51,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 09:26:51,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 09:26:51,100 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 09:26:51,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 09:26:48" (1/3) ... [2022-07-21 09:26:51,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@100da425 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:26:51, skipping insertion in model container [2022-07-21 09:26:51,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:26:49" (2/3) ... [2022-07-21 09:26:51,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@100da425 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:26:51, skipping insertion in model container [2022-07-21 09:26:51,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:26:51" (3/3) ... [2022-07-21 09:26:51,106 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_set_at_harness.i [2022-07-21 09:26:51,114 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 09:26:51,115 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 09:26:51,168 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 09:26:51,175 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@5fc724d8, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6a01543b [2022-07-21 09:26:51,175 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 09:26:51,182 INFO L276 IsEmpty]: Start isEmpty. Operand has 281 states, 164 states have (on average 1.2195121951219512) internal successors, (200), 165 states have internal predecessors, (200), 93 states have call successors, (93), 22 states have call predecessors, (93), 22 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2022-07-21 09:26:51,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-21 09:26:51,201 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:26:51,202 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:26:51,203 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:26:51,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:26:51,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1870768140, now seen corresponding path program 1 times [2022-07-21 09:26:51,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:26:51,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688505203] [2022-07-21 09:26:51,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:26:51,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:26:51,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:26:51,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:26:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:26:51,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 09:26:51,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:26:51,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:26:51,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:26:51,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 09:26:51,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:26:51,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:26:51,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:26:51,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 09:26:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:26:51,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:26:51,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:26:51,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 09:26:51,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:26:51,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 09:26:51,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:26:51,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-21 09:26:51,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:26:51,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:26:51,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:26:51,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 09:26:51,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:26:51,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 09:26:51,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:26:51,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 09:26:51,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:26:51,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 09:26:51,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:26:51,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 09:26:51,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:26:51,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 09:26:51,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:26:51,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 09:26:51,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:26:51,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 09:26:51,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:26:51,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 09:26:51,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:26:51,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-21 09:26:51,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:26:51,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-21 09:26:51,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:26:51,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:26:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:26:51,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-21 09:26:51,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:26:51,979 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2022-07-21 09:26:51,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:26:51,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688505203] [2022-07-21 09:26:51,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688505203] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:26:51,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585511650] [2022-07-21 09:26:51,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:26:51,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:26:51,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:26:51,982 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:26:52,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 09:26:52,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:26:52,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 2435 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 09:26:52,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:26:52,564 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2022-07-21 09:26:52,565 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:26:52,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585511650] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:26:52,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:26:52,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-07-21 09:26:52,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230676774] [2022-07-21 09:26:52,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:26:52,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:26:52,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:26:52,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:26:52,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-21 09:26:52,596 INFO L87 Difference]: Start difference. First operand has 281 states, 164 states have (on average 1.2195121951219512) internal successors, (200), 165 states have internal predecessors, (200), 93 states have call successors, (93), 22 states have call predecessors, (93), 22 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-21 09:26:52,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:26:52,906 INFO L93 Difference]: Finished difference Result 557 states and 840 transitions. [2022-07-21 09:26:52,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:26:52,908 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 146 [2022-07-21 09:26:52,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:26:52,917 INFO L225 Difference]: With dead ends: 557 [2022-07-21 09:26:52,917 INFO L226 Difference]: Without dead ends: 278 [2022-07-21 09:26:52,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-07-21 09:26:52,923 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 385 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:26:52,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 1217 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 09:26:52,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-07-21 09:26:52,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2022-07-21 09:26:52,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 161 states have (on average 1.2111801242236024) internal successors, (195), 163 states have internal predecessors, (195), 93 states have call successors, (93), 22 states have call predecessors, (93), 23 states have return successors, (108), 92 states have call predecessors, (108), 92 states have call successors, (108) [2022-07-21 09:26:52,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 396 transitions. [2022-07-21 09:26:52,969 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 396 transitions. Word has length 146 [2022-07-21 09:26:52,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:26:52,970 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 396 transitions. [2022-07-21 09:26:52,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-21 09:26:52,970 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 396 transitions. [2022-07-21 09:26:52,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-21 09:26:52,972 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:26:52,973 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:26:53,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 09:26:53,187 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 [2022-07-21 09:26:53,187 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:26:53,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:26:53,188 INFO L85 PathProgramCache]: Analyzing trace with hash 265363754, now seen corresponding path program 1 times [2022-07-21 09:26:53,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:26:53,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45746861] [2022-07-21 09:26:53,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:26:53,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:26:53,260 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:26:53,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [304454064] [2022-07-21 09:26:53,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:26:53,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:26:53,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:26:53,288 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:26:53,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 09:26:53,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:26:53,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 2707 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 09:26:53,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:26:53,763 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-07-21 09:26:53,763 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:26:53,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:26:53,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45746861] [2022-07-21 09:26:53,764 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:26:53,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304454064] [2022-07-21 09:26:53,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304454064] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:26:53,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:26:53,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 09:26:53,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630489652] [2022-07-21 09:26:53,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:26:53,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:26:53,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:26:53,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:26:53,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:26:53,766 INFO L87 Difference]: Start difference. First operand 278 states and 396 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-21 09:26:53,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:26:53,796 INFO L93 Difference]: Finished difference Result 535 states and 784 transitions. [2022-07-21 09:26:53,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:26:53,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 176 [2022-07-21 09:26:53,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:26:53,799 INFO L225 Difference]: With dead ends: 535 [2022-07-21 09:26:53,799 INFO L226 Difference]: Without dead ends: 283 [2022-07-21 09:26:53,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:26:53,801 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 10 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:26:53,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1124 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:26:53,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-07-21 09:26:53,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 280. [2022-07-21 09:26:53,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 163 states have (on average 1.2085889570552146) internal successors, (197), 165 states have internal predecessors, (197), 93 states have call successors, (93), 22 states have call predecessors, (93), 23 states have return successors, (108), 92 states have call predecessors, (108), 92 states have call successors, (108) [2022-07-21 09:26:53,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 398 transitions. [2022-07-21 09:26:53,817 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 398 transitions. Word has length 176 [2022-07-21 09:26:53,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:26:53,818 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 398 transitions. [2022-07-21 09:26:53,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-21 09:26:53,818 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 398 transitions. [2022-07-21 09:26:53,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-21 09:26:53,819 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:26:53,820 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:26:53,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 09:26:54,039 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 [2022-07-21 09:26:54,040 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:26:54,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:26:54,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1664860694, now seen corresponding path program 1 times [2022-07-21 09:26:54,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:26:54,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751899681] [2022-07-21 09:26:54,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:26:54,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:26:54,097 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:26:54,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1697651608] [2022-07-21 09:26:54,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:26:54,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:26:54,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:26:54,140 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:26:54,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 09:26:54,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:26:54,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 2717 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 09:26:54,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:26:54,686 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-07-21 09:26:54,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:26:54,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:26:54,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751899681] [2022-07-21 09:26:54,687 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:26:54,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697651608] [2022-07-21 09:26:54,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697651608] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:26:54,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:26:54,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 09:26:54,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466283978] [2022-07-21 09:26:54,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:26:54,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:26:54,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:26:54,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:26:54,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:26:54,689 INFO L87 Difference]: Start difference. First operand 280 states and 398 transitions. Second operand has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2022-07-21 09:26:55,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:26:55,103 INFO L93 Difference]: Finished difference Result 512 states and 726 transitions. [2022-07-21 09:26:55,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:26:55,103 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) Word has length 176 [2022-07-21 09:26:55,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:26:55,105 INFO L225 Difference]: With dead ends: 512 [2022-07-21 09:26:55,105 INFO L226 Difference]: Without dead ends: 280 [2022-07-21 09:26:55,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-07-21 09:26:55,107 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 444 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 09:26:55,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 1529 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 09:26:55,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-07-21 09:26:55,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2022-07-21 09:26:55,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 163 states have (on average 1.2085889570552146) internal successors, (197), 165 states have internal predecessors, (197), 93 states have call successors, (93), 22 states have call predecessors, (93), 23 states have return successors, (104), 92 states have call predecessors, (104), 92 states have call successors, (104) [2022-07-21 09:26:55,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 394 transitions. [2022-07-21 09:26:55,123 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 394 transitions. Word has length 176 [2022-07-21 09:26:55,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:26:55,123 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 394 transitions. [2022-07-21 09:26:55,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2022-07-21 09:26:55,124 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 394 transitions. [2022-07-21 09:26:55,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-21 09:26:55,125 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:26:55,126 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:26:55,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 09:26:55,346 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 [2022-07-21 09:26:55,347 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:26:55,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:26:55,347 INFO L85 PathProgramCache]: Analyzing trace with hash -331838195, now seen corresponding path program 2 times [2022-07-21 09:26:55,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:26:55,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598018995] [2022-07-21 09:26:55,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:26:55,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:26:55,408 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:26:55,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [984726617] [2022-07-21 09:26:55,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:26:55,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:26:55,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:26:55,424 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:26:55,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 09:26:55,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 09:26:55,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:26:55,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 1918 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 09:26:55,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:26:55,786 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2022-07-21 09:26:55,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:26:55,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:26:55,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598018995] [2022-07-21 09:26:55,787 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:26:55,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984726617] [2022-07-21 09:26:55,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984726617] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:26:55,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:26:55,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:26:55,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563283939] [2022-07-21 09:26:55,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:26:55,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:26:55,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:26:55,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:26:55,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:26:55,789 INFO L87 Difference]: Start difference. First operand 280 states and 394 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-21 09:26:55,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:26:55,817 INFO L93 Difference]: Finished difference Result 494 states and 684 transitions. [2022-07-21 09:26:55,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:26:55,817 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) Word has length 191 [2022-07-21 09:26:55,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:26:55,819 INFO L225 Difference]: With dead ends: 494 [2022-07-21 09:26:55,819 INFO L226 Difference]: Without dead ends: 285 [2022-07-21 09:26:55,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:26:55,821 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 2 mSDsluCounter, 1121 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:26:55,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1497 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:26:55,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-07-21 09:26:55,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2022-07-21 09:26:55,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 167 states have (on average 1.2035928143712575) internal successors, (201), 169 states have internal predecessors, (201), 93 states have call successors, (93), 22 states have call predecessors, (93), 24 states have return successors, (106), 93 states have call predecessors, (106), 92 states have call successors, (106) [2022-07-21 09:26:55,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 400 transitions. [2022-07-21 09:26:55,833 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 400 transitions. Word has length 191 [2022-07-21 09:26:55,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:26:55,833 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 400 transitions. [2022-07-21 09:26:55,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-21 09:26:55,834 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 400 transitions. [2022-07-21 09:26:55,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-07-21 09:26:55,835 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:26:55,836 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:26:55,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 09:26:56,055 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 [2022-07-21 09:26:56,056 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:26:56,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:26:56,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1595114899, now seen corresponding path program 1 times [2022-07-21 09:26:56,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:26:56,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120067593] [2022-07-21 09:26:56,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:26:56,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:26:56,115 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:26:56,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1180765957] [2022-07-21 09:26:56,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:26:56,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:26:56,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:26:56,125 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:26:56,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 09:26:56,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:26:56,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 2862 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 09:26:56,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:26:56,636 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2022-07-21 09:26:56,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:26:56,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:26:56,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120067593] [2022-07-21 09:26:56,637 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:26:56,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180765957] [2022-07-21 09:26:56,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180765957] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:26:56,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:26:56,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 09:26:56,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933378727] [2022-07-21 09:26:56,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:26:56,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 09:26:56,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:26:56,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 09:26:56,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 09:26:56,639 INFO L87 Difference]: Start difference. First operand 285 states and 400 transitions. Second operand has 9 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 5 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2022-07-21 09:26:57,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:26:57,084 INFO L93 Difference]: Finished difference Result 516 states and 720 transitions. [2022-07-21 09:26:57,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 09:26:57,084 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 5 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) Word has length 197 [2022-07-21 09:26:57,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:26:57,086 INFO L225 Difference]: With dead ends: 516 [2022-07-21 09:26:57,086 INFO L226 Difference]: Without dead ends: 285 [2022-07-21 09:26:57,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-07-21 09:26:57,088 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 494 mSDsluCounter, 1418 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 09:26:57,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 1700 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 09:26:57,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-07-21 09:26:57,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2022-07-21 09:26:57,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 167 states have (on average 1.2035928143712575) internal successors, (201), 169 states have internal predecessors, (201), 93 states have call successors, (93), 22 states have call predecessors, (93), 24 states have return successors, (100), 93 states have call predecessors, (100), 92 states have call successors, (100) [2022-07-21 09:26:57,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 394 transitions. [2022-07-21 09:26:57,099 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 394 transitions. Word has length 197 [2022-07-21 09:26:57,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:26:57,100 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 394 transitions. [2022-07-21 09:26:57,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 5 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2022-07-21 09:26:57,100 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 394 transitions. [2022-07-21 09:26:57,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-07-21 09:26:57,102 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:26:57,102 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:26:57,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 09:26:57,323 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 [2022-07-21 09:26:57,323 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:26:57,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:26:57,324 INFO L85 PathProgramCache]: Analyzing trace with hash -895724094, now seen corresponding path program 2 times [2022-07-21 09:26:57,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:26:57,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306115081] [2022-07-21 09:26:57,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:26:57,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:26:57,410 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:26:57,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [472739064] [2022-07-21 09:26:57,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:26:57,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:26:57,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:26:57,431 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:26:57,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 09:26:57,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:26:57,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:26:57,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 3003 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 09:26:57,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:26:58,095 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2022-07-21 09:26:58,095 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:26:58,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:26:58,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306115081] [2022-07-21 09:26:58,095 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:26:58,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472739064] [2022-07-21 09:26:58,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472739064] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:26:58,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:26:58,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:26:58,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991429428] [2022-07-21 09:26:58,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:26:58,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:26:58,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:26:58,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:26:58,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:26:58,096 INFO L87 Difference]: Start difference. First operand 285 states and 394 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 9 states have internal predecessors, (70), 6 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 6 states have call predecessors, (27), 5 states have call successors, (27) [2022-07-21 09:26:58,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:26:58,614 INFO L93 Difference]: Finished difference Result 513 states and 703 transitions. [2022-07-21 09:26:58,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 09:26:58,615 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 9 states have internal predecessors, (70), 6 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 6 states have call predecessors, (27), 5 states have call successors, (27) Word has length 212 [2022-07-21 09:26:58,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:26:58,616 INFO L225 Difference]: With dead ends: 513 [2022-07-21 09:26:58,616 INFO L226 Difference]: Without dead ends: 285 [2022-07-21 09:26:58,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-07-21 09:26:58,618 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 542 mSDsluCounter, 1620 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 1901 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 09:26:58,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 1901 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 09:26:58,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-07-21 09:26:58,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2022-07-21 09:26:58,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 167 states have (on average 1.2035928143712575) internal successors, (201), 169 states have internal predecessors, (201), 93 states have call successors, (93), 22 states have call predecessors, (93), 24 states have return successors, (96), 93 states have call predecessors, (96), 92 states have call successors, (96) [2022-07-21 09:26:58,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 390 transitions. [2022-07-21 09:26:58,631 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 390 transitions. Word has length 212 [2022-07-21 09:26:58,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:26:58,632 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 390 transitions. [2022-07-21 09:26:58,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 9 states have internal predecessors, (70), 6 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 6 states have call predecessors, (27), 5 states have call successors, (27) [2022-07-21 09:26:58,632 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 390 transitions. [2022-07-21 09:26:58,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-07-21 09:26:58,636 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:26:58,636 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:26:58,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 09:26:58,857 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 [2022-07-21 09:26:58,857 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:26:58,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:26:58,858 INFO L85 PathProgramCache]: Analyzing trace with hash 247081526, now seen corresponding path program 1 times [2022-07-21 09:26:58,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:26:58,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414013540] [2022-07-21 09:26:58,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:26:58,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:26:58,937 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:26:58,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [406076588] [2022-07-21 09:26:58,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:26:58,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:26:58,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:26:58,964 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:26:58,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 09:26:59,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:26:59,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 3285 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-21 09:26:59,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:26:59,612 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 267 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2022-07-21 09:26:59,612 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:26:59,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:26:59,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414013540] [2022-07-21 09:26:59,616 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:26:59,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406076588] [2022-07-21 09:26:59,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406076588] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:26:59,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:26:59,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 09:26:59,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932761698] [2022-07-21 09:26:59,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:26:59,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 09:26:59,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:26:59,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 09:26:59,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 09:26:59,618 INFO L87 Difference]: Start difference. First operand 285 states and 390 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) [2022-07-21 09:26:59,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:26:59,805 INFO L93 Difference]: Finished difference Result 646 states and 908 transitions. [2022-07-21 09:26:59,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 09:26:59,805 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) Word has length 242 [2022-07-21 09:26:59,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:26:59,807 INFO L225 Difference]: With dead ends: 646 [2022-07-21 09:26:59,807 INFO L226 Difference]: Without dead ends: 412 [2022-07-21 09:26:59,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:26:59,809 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 133 mSDsluCounter, 2886 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 3317 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:26:59,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 3317 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:26:59,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-07-21 09:26:59,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 388. [2022-07-21 09:26:59,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 223 states have (on average 1.2152466367713004) internal successors, (271), 225 states have internal predecessors, (271), 138 states have call successors, (138), 23 states have call predecessors, (138), 26 states have return successors, (145), 139 states have call predecessors, (145), 137 states have call successors, (145) [2022-07-21 09:26:59,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 554 transitions. [2022-07-21 09:26:59,827 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 554 transitions. Word has length 242 [2022-07-21 09:26:59,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:26:59,828 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 554 transitions. [2022-07-21 09:26:59,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) [2022-07-21 09:26:59,828 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 554 transitions. [2022-07-21 09:26:59,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-07-21 09:26:59,830 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:26:59,830 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:26:59,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-21 09:27:00,047 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 [2022-07-21 09:27:00,047 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:27:00,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:27:00,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1060060872, now seen corresponding path program 1 times [2022-07-21 09:27:00,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:27:00,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706817002] [2022-07-21 09:27:00,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:00,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:27:00,094 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:27:00,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2114000069] [2022-07-21 09:27:00,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:00,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:27:00,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:27:00,096 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) [2022-07-21 09:27:00,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 09:27:00,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:00,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 3282 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-21 09:27:00,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:27:00,704 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 267 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2022-07-21 09:27:00,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:27:00,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:27:00,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706817002] [2022-07-21 09:27:00,705 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:27:00,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114000069] [2022-07-21 09:27:00,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114000069] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:27:00,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:27:00,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 09:27:00,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497611527] [2022-07-21 09:27:00,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:27:00,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 09:27:00,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:27:00,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 09:27:00,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:27:00,707 INFO L87 Difference]: Start difference. First operand 388 states and 554 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 4 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2022-07-21 09:27:00,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:27:00,896 INFO L93 Difference]: Finished difference Result 827 states and 1198 transitions. [2022-07-21 09:27:00,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:27:00,896 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 4 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) Word has length 242 [2022-07-21 09:27:00,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:27:00,899 INFO L225 Difference]: With dead ends: 827 [2022-07-21 09:27:00,899 INFO L226 Difference]: Without dead ends: 500 [2022-07-21 09:27:00,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:27:00,901 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 127 mSDsluCounter, 2435 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 2973 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:27:00,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 2973 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:27:00,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-07-21 09:27:00,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 478. [2022-07-21 09:27:00,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 270 states have (on average 1.2185185185185186) internal successors, (329), 272 states have internal predecessors, (329), 180 states have call successors, (180), 24 states have call predecessors, (180), 27 states have return successors, (189), 181 states have call predecessors, (189), 179 states have call successors, (189) [2022-07-21 09:27:00,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 698 transitions. [2022-07-21 09:27:00,925 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 698 transitions. Word has length 242 [2022-07-21 09:27:00,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:27:00,925 INFO L495 AbstractCegarLoop]: Abstraction has 478 states and 698 transitions. [2022-07-21 09:27:00,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 4 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2022-07-21 09:27:00,925 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 698 transitions. [2022-07-21 09:27:00,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-07-21 09:27:00,928 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:27:00,928 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:27:00,967 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-21 09:27:01,150 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 [2022-07-21 09:27:01,151 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:27:01,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:27:01,151 INFO L85 PathProgramCache]: Analyzing trace with hash -642172170, now seen corresponding path program 1 times [2022-07-21 09:27:01,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:27:01,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621929021] [2022-07-21 09:27:01,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:01,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:27:01,236 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:27:01,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1670252058] [2022-07-21 09:27:01,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:01,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:27:01,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:27:01,238 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) [2022-07-21 09:27:01,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-21 09:27:01,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:01,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 3279 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-21 09:27:01,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:27:01,813 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 282 proven. 1 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2022-07-21 09:27:01,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:27:02,134 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 18 proven. 12 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2022-07-21 09:27:02,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:27:02,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621929021] [2022-07-21 09:27:02,134 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:27:02,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670252058] [2022-07-21 09:27:02,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670252058] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:27:02,135 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:27:02,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 11 [2022-07-21 09:27:02,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013934883] [2022-07-21 09:27:02,135 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:27:02,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 09:27:02,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:27:02,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 09:27:02,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:27:02,136 INFO L87 Difference]: Start difference. First operand 478 states and 698 transitions. Second operand has 11 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 4 states have call successors, (43), 3 states have call predecessors, (43), 4 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2022-07-21 09:27:02,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:27:02,318 INFO L93 Difference]: Finished difference Result 634 states and 884 transitions. [2022-07-21 09:27:02,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 09:27:02,318 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 4 states have call successors, (43), 3 states have call predecessors, (43), 4 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) Word has length 242 [2022-07-21 09:27:02,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:27:02,320 INFO L225 Difference]: With dead ends: 634 [2022-07-21 09:27:02,320 INFO L226 Difference]: Without dead ends: 289 [2022-07-21 09:27:02,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 473 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-21 09:27:02,322 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 3 mSDsluCounter, 2379 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2732 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:27:02,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2732 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:27:02,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-07-21 09:27:02,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 288. [2022-07-21 09:27:02,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 169 states have (on average 1.1893491124260356) internal successors, (201), 172 states have internal predecessors, (201), 93 states have call successors, (93), 22 states have call predecessors, (93), 25 states have return successors, (97), 93 states have call predecessors, (97), 92 states have call successors, (97) [2022-07-21 09:27:02,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 391 transitions. [2022-07-21 09:27:02,333 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 391 transitions. Word has length 242 [2022-07-21 09:27:02,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:27:02,334 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 391 transitions. [2022-07-21 09:27:02,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 4 states have call successors, (43), 3 states have call predecessors, (43), 4 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2022-07-21 09:27:02,334 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 391 transitions. [2022-07-21 09:27:02,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-07-21 09:27:02,335 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:27:02,335 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:27:02,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-21 09:27:02,555 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 [2022-07-21 09:27:02,555 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:27:02,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:27:02,556 INFO L85 PathProgramCache]: Analyzing trace with hash 2101338209, now seen corresponding path program 1 times [2022-07-21 09:27:02,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:27:02,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344327239] [2022-07-21 09:27:02,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:02,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:27:02,613 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:27:02,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [597642151] [2022-07-21 09:27:02,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:02,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:27:02,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:27:02,628 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) [2022-07-21 09:27:02,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-21 09:27:03,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:03,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 3320 conjuncts, 64 conjunts are in the unsatisfiable core [2022-07-21 09:27:03,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:27:03,409 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-21 09:27:03,494 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 239 proven. 4 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-07-21 09:27:03,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:27:03,999 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-21 09:27:03,999 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2022-07-21 09:27:04,005 INFO L356 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2022-07-21 09:27:04,005 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2022-07-21 09:27:04,047 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 27 proven. 78 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2022-07-21 09:27:04,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:27:04,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344327239] [2022-07-21 09:27:04,048 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:27:04,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597642151] [2022-07-21 09:27:04,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597642151] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:27:04,048 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:27:04,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2022-07-21 09:27:04,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055127341] [2022-07-21 09:27:04,049 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:27:04,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-21 09:27:04,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:27:04,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-21 09:27:04,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2022-07-21 09:27:04,051 INFO L87 Difference]: Start difference. First operand 288 states and 391 transitions. Second operand has 24 states, 20 states have (on average 6.7) internal successors, (134), 19 states have internal predecessors, (134), 10 states have call successors, (60), 5 states have call predecessors, (60), 6 states have return successors, (57), 7 states have call predecessors, (57), 9 states have call successors, (57) [2022-07-21 09:27:04,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:27:04,947 INFO L93 Difference]: Finished difference Result 564 states and 777 transitions. [2022-07-21 09:27:04,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 09:27:04,947 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 6.7) internal successors, (134), 19 states have internal predecessors, (134), 10 states have call successors, (60), 5 states have call predecessors, (60), 6 states have return successors, (57), 7 states have call predecessors, (57), 9 states have call successors, (57) Word has length 253 [2022-07-21 09:27:04,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:27:04,949 INFO L225 Difference]: With dead ends: 564 [2022-07-21 09:27:04,949 INFO L226 Difference]: Without dead ends: 294 [2022-07-21 09:27:04,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 485 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=137, Invalid=919, Unknown=0, NotChecked=0, Total=1056 [2022-07-21 09:27:04,950 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 70 mSDsluCounter, 4068 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 4392 SdHoareTripleChecker+Invalid, 1254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 126 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 09:27:04,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 4392 Invalid, 1254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1122 Invalid, 0 Unknown, 126 Unchecked, 0.6s Time] [2022-07-21 09:27:04,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-07-21 09:27:04,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 291. [2022-07-21 09:27:04,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 171 states have (on average 1.1871345029239766) internal successors, (203), 175 states have internal predecessors, (203), 93 states have call successors, (93), 22 states have call predecessors, (93), 26 states have return successors, (115), 93 states have call predecessors, (115), 92 states have call successors, (115) [2022-07-21 09:27:04,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 411 transitions. [2022-07-21 09:27:04,963 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 411 transitions. Word has length 253 [2022-07-21 09:27:04,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:27:04,963 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 411 transitions. [2022-07-21 09:27:04,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 6.7) internal successors, (134), 19 states have internal predecessors, (134), 10 states have call successors, (60), 5 states have call predecessors, (60), 6 states have return successors, (57), 7 states have call predecessors, (57), 9 states have call successors, (57) [2022-07-21 09:27:04,963 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 411 transitions. [2022-07-21 09:27:04,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-07-21 09:27:04,964 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:27:04,965 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:27:04,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-21 09:27:05,187 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 [2022-07-21 09:27:05,187 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:27:05,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:27:05,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1612948967, now seen corresponding path program 1 times [2022-07-21 09:27:05,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:27:05,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480880668] [2022-07-21 09:27:05,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:05,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:27:05,249 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:27:05,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1470127776] [2022-07-21 09:27:05,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:05,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:27:05,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:27:05,252 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) [2022-07-21 09:27:05,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-21 09:27:05,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:05,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 3320 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 09:27:05,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:27:05,837 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2022-07-21 09:27:05,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:27:05,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:27:05,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480880668] [2022-07-21 09:27:05,838 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:27:05,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470127776] [2022-07-21 09:27:05,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470127776] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:27:05,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:27:05,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:27:05,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870867218] [2022-07-21 09:27:05,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:27:05,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:27:05,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:27:05,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:27:05,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:27:05,841 INFO L87 Difference]: Start difference. First operand 291 states and 411 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-07-21 09:27:06,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:27:06,072 INFO L93 Difference]: Finished difference Result 561 states and 831 transitions. [2022-07-21 09:27:06,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:27:06,072 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 255 [2022-07-21 09:27:06,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:27:06,074 INFO L225 Difference]: With dead ends: 561 [2022-07-21 09:27:06,074 INFO L226 Difference]: Without dead ends: 296 [2022-07-21 09:27:06,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:27:06,076 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 7 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:27:06,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1447 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 09:27:06,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-07-21 09:27:06,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 292. [2022-07-21 09:27:06,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 172 states have (on average 1.186046511627907) internal successors, (204), 176 states have internal predecessors, (204), 93 states have call successors, (93), 22 states have call predecessors, (93), 26 states have return successors, (115), 93 states have call predecessors, (115), 92 states have call successors, (115) [2022-07-21 09:27:06,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 412 transitions. [2022-07-21 09:27:06,093 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 412 transitions. Word has length 255 [2022-07-21 09:27:06,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:27:06,093 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 412 transitions. [2022-07-21 09:27:06,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-07-21 09:27:06,094 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 412 transitions. [2022-07-21 09:27:06,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-07-21 09:27:06,095 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:27:06,095 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:27:06,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-21 09:27:06,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-21 09:27:06,315 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:27:06,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:27:06,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1368188443, now seen corresponding path program 1 times [2022-07-21 09:27:06,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:27:06,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032995239] [2022-07-21 09:27:06,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:06,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:27:06,382 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:27:06,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2081100070] [2022-07-21 09:27:06,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:06,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:27:06,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:27:06,400 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:27:06,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-21 09:27:06,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:06,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 3325 conjuncts, 79 conjunts are in the unsatisfiable core [2022-07-21 09:27:06,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:27:10,175 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2022-07-21 09:27:10,179 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-07-21 09:27:10,182 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-07-21 09:27:10,214 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 284 proven. 6 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2022-07-21 09:27:10,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:27:10,798 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-07-21 09:27:10,800 WARN L234 Elim1Store]: Array PQE input equivalent to true [2022-07-21 09:27:10,878 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-07-21 09:27:10,984 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-21 09:27:10,984 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2022-07-21 09:27:11,055 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 30 proven. 78 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2022-07-21 09:27:11,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:27:11,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032995239] [2022-07-21 09:27:11,056 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:27:11,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081100070] [2022-07-21 09:27:11,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081100070] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:27:11,056 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:27:11,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 36 [2022-07-21 09:27:11,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722942590] [2022-07-21 09:27:11,056 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:27:11,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-07-21 09:27:11,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:27:11,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-07-21 09:27:11,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1102, Unknown=1, NotChecked=0, Total=1260 [2022-07-21 09:27:11,058 INFO L87 Difference]: Start difference. First operand 292 states and 412 transitions. Second operand has 36 states, 32 states have (on average 5.375) internal successors, (172), 30 states have internal predecessors, (172), 16 states have call successors, (64), 6 states have call predecessors, (64), 12 states have return successors, (61), 15 states have call predecessors, (61), 15 states have call successors, (61) [2022-07-21 09:27:15,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:27:15,288 INFO L93 Difference]: Finished difference Result 1162 states and 1782 transitions. [2022-07-21 09:27:15,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-21 09:27:15,294 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 32 states have (on average 5.375) internal successors, (172), 30 states have internal predecessors, (172), 16 states have call successors, (64), 6 states have call predecessors, (64), 12 states have return successors, (61), 15 states have call predecessors, (61), 15 states have call successors, (61) Word has length 255 [2022-07-21 09:27:15,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:27:15,315 INFO L225 Difference]: With dead ends: 1162 [2022-07-21 09:27:15,315 INFO L226 Difference]: Without dead ends: 905 [2022-07-21 09:27:15,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 473 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 785 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=316, Invalid=2545, Unknown=1, NotChecked=0, Total=2862 [2022-07-21 09:27:15,324 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 791 mSDsluCounter, 7535 mSDsCounter, 0 mSdLazyCounter, 5199 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 8020 SdHoareTripleChecker+Invalid, 7862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 5199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2395 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-21 09:27:15,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 8020 Invalid, 7862 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [268 Valid, 5199 Invalid, 0 Unknown, 2395 Unchecked, 3.5s Time] [2022-07-21 09:27:15,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2022-07-21 09:27:15,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 824. [2022-07-21 09:27:15,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 482 states have (on average 1.1784232365145229) internal successors, (568), 490 states have internal predecessors, (568), 269 states have call successors, (269), 62 states have call predecessors, (269), 72 states have return successors, (451), 271 states have call predecessors, (451), 266 states have call successors, (451) [2022-07-21 09:27:15,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1288 transitions. [2022-07-21 09:27:15,379 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1288 transitions. Word has length 255 [2022-07-21 09:27:15,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:27:15,380 INFO L495 AbstractCegarLoop]: Abstraction has 824 states and 1288 transitions. [2022-07-21 09:27:15,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 32 states have (on average 5.375) internal successors, (172), 30 states have internal predecessors, (172), 16 states have call successors, (64), 6 states have call predecessors, (64), 12 states have return successors, (61), 15 states have call predecessors, (61), 15 states have call successors, (61) [2022-07-21 09:27:15,380 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1288 transitions. [2022-07-21 09:27:15,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-07-21 09:27:15,382 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:27:15,383 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:27:15,406 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-07-21 09:27:15,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-21 09:27:15,596 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:27:15,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:27:15,596 INFO L85 PathProgramCache]: Analyzing trace with hash 366917770, now seen corresponding path program 1 times [2022-07-21 09:27:15,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:27:15,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798453633] [2022-07-21 09:27:15,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:15,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:27:15,650 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:27:15,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1655098662] [2022-07-21 09:27:15,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:15,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:27:15,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:27:15,665 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:27:15,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-21 09:27:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:16,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 3364 conjuncts, 83 conjunts are in the unsatisfiable core [2022-07-21 09:27:16,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:27:16,348 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:27:16,448 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-21 09:27:16,485 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 15 [2022-07-21 09:27:20,559 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-21 09:27:20,559 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 32 [2022-07-21 09:27:20,612 INFO L356 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2022-07-21 09:27:20,612 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 33 [2022-07-21 09:27:20,722 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2129 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2129) |c_#memory_$Pointer$.base|)) is different from true [2022-07-21 09:27:22,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:27:22,801 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2022-07-21 09:27:22,807 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-21 09:27:22,807 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-21 09:28:10,607 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2130 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2130)) |c_#memory_$Pointer$.base|)) is different from true [2022-07-21 09:28:36,239 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 315 proven. 37 refuted. 0 times theorem prover too weak. 202 trivial. 3 not checked. [2022-07-21 09:28:36,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:28:37,458 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2138 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_141| Int)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_141| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_141|) 0 v_ArrVal_2138)) |c_ULTIMATE.start_aws_array_list_set_at_harness_~#list~0#1.base|) (+ 32 |c_ULTIMATE.start_aws_array_list_set_at_harness_~#list~0#1.offset|)) 0))) is different from false [2022-07-21 09:28:37,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:28:37,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798453633] [2022-07-21 09:28:37,459 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:28:37,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655098662] [2022-07-21 09:28:37,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655098662] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:28:37,460 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:28:37,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2022-07-21 09:28:37,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502549256] [2022-07-21 09:28:37,460 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-21 09:28:37,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-21 09:28:37,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:28:37,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-21 09:28:37,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=558, Unknown=26, NotChecked=150, Total=812 [2022-07-21 09:28:37,461 INFO L87 Difference]: Start difference. First operand 824 states and 1288 transitions. Second operand has 28 states, 25 states have (on average 4.44) internal successors, (111), 25 states have internal predecessors, (111), 12 states have call successors, (36), 8 states have call predecessors, (36), 11 states have return successors, (34), 12 states have call predecessors, (34), 12 states have call successors, (34) [2022-07-21 09:29:09,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:29:09,459 INFO L93 Difference]: Finished difference Result 1479 states and 2713 transitions. [2022-07-21 09:29:09,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-21 09:29:09,459 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 4.44) internal successors, (111), 25 states have internal predecessors, (111), 12 states have call successors, (36), 8 states have call predecessors, (36), 11 states have return successors, (34), 12 states have call predecessors, (34), 12 states have call successors, (34) Word has length 261 [2022-07-21 09:29:09,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:29:09,469 INFO L225 Difference]: With dead ends: 1479 [2022-07-21 09:29:09,469 INFO L226 Difference]: Without dead ends: 1220 [2022-07-21 09:29:09,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 368 SyntacticMatches, 11 SemanticMatches, 39 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 111.1s TimeCoverageRelationStatistics Valid=141, Invalid=1227, Unknown=50, NotChecked=222, Total=1640 [2022-07-21 09:29:09,472 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 305 mSDsluCounter, 3114 mSDsCounter, 0 mSdLazyCounter, 2134 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 3533 SdHoareTripleChecker+Invalid, 8760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 2134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6324 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:29:09,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 3533 Invalid, 8760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 2134 Invalid, 0 Unknown, 6324 Unchecked, 1.2s Time] [2022-07-21 09:29:09,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2022-07-21 09:29:09,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 896. [2022-07-21 09:29:09,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 532 states have (on average 1.169172932330827) internal successors, (622), 545 states have internal predecessors, (622), 278 states have call successors, (278), 69 states have call predecessors, (278), 85 states have return successors, (619), 281 states have call predecessors, (619), 275 states have call successors, (619) [2022-07-21 09:29:09,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1519 transitions. [2022-07-21 09:29:09,540 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1519 transitions. Word has length 261 [2022-07-21 09:29:09,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:29:09,540 INFO L495 AbstractCegarLoop]: Abstraction has 896 states and 1519 transitions. [2022-07-21 09:29:09,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 4.44) internal successors, (111), 25 states have internal predecessors, (111), 12 states have call successors, (36), 8 states have call predecessors, (36), 11 states have return successors, (34), 12 states have call predecessors, (34), 12 states have call successors, (34) [2022-07-21 09:29:09,540 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1519 transitions. [2022-07-21 09:29:09,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2022-07-21 09:29:09,543 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:29:09,543 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:29:09,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-07-21 09:29:09,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-21 09:29:09,756 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:29:09,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:29:09,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1304713533, now seen corresponding path program 1 times [2022-07-21 09:29:09,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:29:09,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057905274] [2022-07-21 09:29:09,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:29:09,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:29:09,799 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:29:09,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1833771400] [2022-07-21 09:29:09,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:29:09,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:29:09,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:29:09,801 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:29:09,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-21 09:29:10,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:29:10,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 3345 conjuncts, 46 conjunts are in the unsatisfiable core [2022-07-21 09:29:10,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:29:10,543 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 347 proven. 1 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2022-07-21 09:29:10,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:29:11,319 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 46 proven. 81 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2022-07-21 09:29:11,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:29:11,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057905274] [2022-07-21 09:29:11,320 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:29:11,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833771400] [2022-07-21 09:29:11,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833771400] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:29:11,320 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:29:11,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 31 [2022-07-21 09:29:11,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431844726] [2022-07-21 09:29:11,321 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:29:11,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-21 09:29:11,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:29:11,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-21 09:29:11,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=859, Unknown=0, NotChecked=0, Total=930 [2022-07-21 09:29:11,323 INFO L87 Difference]: Start difference. First operand 896 states and 1519 transitions. Second operand has 31 states, 27 states have (on average 5.2592592592592595) internal successors, (142), 22 states have internal predecessors, (142), 7 states have call successors, (50), 3 states have call predecessors, (50), 10 states have return successors, (52), 10 states have call predecessors, (52), 6 states have call successors, (52) [2022-07-21 09:29:12,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:29:12,114 INFO L93 Difference]: Finished difference Result 1637 states and 2809 transitions. [2022-07-21 09:29:12,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-21 09:29:12,115 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 5.2592592592592595) internal successors, (142), 22 states have internal predecessors, (142), 7 states have call successors, (50), 3 states have call predecessors, (50), 10 states have return successors, (52), 10 states have call predecessors, (52), 6 states have call successors, (52) Word has length 285 [2022-07-21 09:29:12,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:29:12,120 INFO L225 Difference]: With dead ends: 1637 [2022-07-21 09:29:12,120 INFO L226 Difference]: Without dead ends: 900 [2022-07-21 09:29:12,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 576 GetRequests, 538 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=115, Invalid=1367, Unknown=0, NotChecked=0, Total=1482 [2022-07-21 09:29:12,124 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 39 mSDsluCounter, 8554 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 8921 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 09:29:12,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 8921 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 09:29:12,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2022-07-21 09:29:12,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 896. [2022-07-21 09:29:12,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 532 states have (on average 1.169172932330827) internal successors, (622), 545 states have internal predecessors, (622), 278 states have call successors, (278), 69 states have call predecessors, (278), 85 states have return successors, (607), 281 states have call predecessors, (607), 275 states have call successors, (607) [2022-07-21 09:29:12,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1507 transitions. [2022-07-21 09:29:12,170 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1507 transitions. Word has length 285 [2022-07-21 09:29:12,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:29:12,170 INFO L495 AbstractCegarLoop]: Abstraction has 896 states and 1507 transitions. [2022-07-21 09:29:12,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 5.2592592592592595) internal successors, (142), 22 states have internal predecessors, (142), 7 states have call successors, (50), 3 states have call predecessors, (50), 10 states have return successors, (52), 10 states have call predecessors, (52), 6 states have call successors, (52) [2022-07-21 09:29:12,171 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1507 transitions. [2022-07-21 09:29:12,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-07-21 09:29:12,173 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:29:12,174 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:29:12,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-07-21 09:29:12,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:29:12,409 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:29:12,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:29:12,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1343783589, now seen corresponding path program 1 times [2022-07-21 09:29:12,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:29:12,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019291603] [2022-07-21 09:29:12,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:29:12,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:29:12,455 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:29:12,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1586161350] [2022-07-21 09:29:12,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:29:12,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:29:12,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:29:12,463 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:29:12,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-21 09:29:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:29:13,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 3325 conjuncts, 70 conjunts are in the unsatisfiable core [2022-07-21 09:29:13,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:29:13,116 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:29:17,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:29:17,220 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-21 09:29:17,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:29:17,224 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-21 09:29:18,412 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2468 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2468) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_2469 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2469)))) is different from true [2022-07-21 09:29:18,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:29:18,643 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-07-21 09:29:18,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:29:18,646 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-07-21 09:29:18,648 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-21 09:29:18,652 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 175 proven. 4 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2022-07-21 09:29:18,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:29:18,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:29:18,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019291603] [2022-07-21 09:29:18,949 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:29:18,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586161350] [2022-07-21 09:29:18,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586161350] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:29:18,949 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:29:18,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-07-21 09:29:18,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734033119] [2022-07-21 09:29:18,949 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-21 09:29:18,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-21 09:29:18,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:29:18,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-21 09:29:18,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=193, Unknown=11, NotChecked=28, Total=272 [2022-07-21 09:29:18,950 INFO L87 Difference]: Start difference. First operand 896 states and 1507 transitions. Second operand has 16 states, 15 states have (on average 6.133333333333334) internal successors, (92), 14 states have internal predecessors, (92), 5 states have call successors, (33), 5 states have call predecessors, (33), 6 states have return successors, (31), 5 states have call predecessors, (31), 5 states have call successors, (31) [2022-07-21 09:29:22,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:29:22,336 INFO L93 Difference]: Finished difference Result 1526 states and 2826 transitions. [2022-07-21 09:29:22,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 09:29:22,336 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 6.133333333333334) internal successors, (92), 14 states have internal predecessors, (92), 5 states have call successors, (33), 5 states have call predecessors, (33), 6 states have return successors, (31), 5 states have call predecessors, (31), 5 states have call successors, (31) Word has length 255 [2022-07-21 09:29:22,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:29:22,343 INFO L225 Difference]: With dead ends: 1526 [2022-07-21 09:29:22,343 INFO L226 Difference]: Without dead ends: 1218 [2022-07-21 09:29:22,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 442 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=50, Invalid=247, Unknown=13, NotChecked=32, Total=342 [2022-07-21 09:29:22,345 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 255 mSDsluCounter, 1375 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 1792 SdHoareTripleChecker+Invalid, 4469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2796 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 09:29:22,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 1792 Invalid, 4469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 1381 Invalid, 0 Unknown, 2796 Unchecked, 0.9s Time] [2022-07-21 09:29:22,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2022-07-21 09:29:22,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 897. [2022-07-21 09:29:22,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 533 states have (on average 1.1688555347091933) internal successors, (623), 546 states have internal predecessors, (623), 278 states have call successors, (278), 69 states have call predecessors, (278), 85 states have return successors, (607), 281 states have call predecessors, (607), 275 states have call successors, (607) [2022-07-21 09:29:22,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1508 transitions. [2022-07-21 09:29:22,398 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1508 transitions. Word has length 255 [2022-07-21 09:29:22,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:29:22,398 INFO L495 AbstractCegarLoop]: Abstraction has 897 states and 1508 transitions. [2022-07-21 09:29:22,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 6.133333333333334) internal successors, (92), 14 states have internal predecessors, (92), 5 states have call successors, (33), 5 states have call predecessors, (33), 6 states have return successors, (31), 5 states have call predecessors, (31), 5 states have call successors, (31) [2022-07-21 09:29:22,399 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1508 transitions. [2022-07-21 09:29:22,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-07-21 09:29:22,401 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:29:22,401 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:29:22,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-21 09:29:22,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-21 09:29:22,623 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:29:22,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:29:22,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1637353821, now seen corresponding path program 1 times [2022-07-21 09:29:22,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:29:22,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996935061] [2022-07-21 09:29:22,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:29:22,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:29:22,667 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:29:22,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [954273184] [2022-07-21 09:29:22,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:29:22,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:29:22,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:29:22,669 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:29:22,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-21 09:29:23,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:29:23,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 3330 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 09:29:23,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:29:23,267 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2022-07-21 09:29:23,268 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:29:23,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:29:23,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996935061] [2022-07-21 09:29:23,268 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:29:23,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954273184] [2022-07-21 09:29:23,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954273184] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:29:23,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:29:23,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:29:23,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679370162] [2022-07-21 09:29:23,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:29:23,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:29:23,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:29:23,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:29:23,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:29:23,270 INFO L87 Difference]: Start difference. First operand 897 states and 1508 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-07-21 09:29:23,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:29:23,460 INFO L93 Difference]: Finished difference Result 1661 states and 2907 transitions. [2022-07-21 09:29:23,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:29:23,461 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 255 [2022-07-21 09:29:23,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:29:23,465 INFO L225 Difference]: With dead ends: 1661 [2022-07-21 09:29:23,465 INFO L226 Difference]: Without dead ends: 881 [2022-07-21 09:29:23,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:29:23,469 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 13 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:29:23,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1386 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:29:23,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2022-07-21 09:29:23,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 880. [2022-07-21 09:29:23,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 522 states have (on average 1.1647509578544062) internal successors, (608), 534 states have internal predecessors, (608), 274 states have call successors, (274), 69 states have call predecessors, (274), 83 states have return successors, (545), 276 states have call predecessors, (545), 271 states have call successors, (545) [2022-07-21 09:29:23,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1427 transitions. [2022-07-21 09:29:23,542 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1427 transitions. Word has length 255 [2022-07-21 09:29:23,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:29:23,542 INFO L495 AbstractCegarLoop]: Abstraction has 880 states and 1427 transitions. [2022-07-21 09:29:23,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-07-21 09:29:23,543 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1427 transitions. [2022-07-21 09:29:23,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-07-21 09:29:23,545 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:29:23,545 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:29:23,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-21 09:29:23,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-21 09:29:23,766 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:29:23,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:29:23,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1844390939, now seen corresponding path program 1 times [2022-07-21 09:29:23,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:29:23,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461114525] [2022-07-21 09:29:23,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:29:23,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:29:23,840 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 09:29:23,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [171177734] [2022-07-21 09:29:23,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:29:23,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:29:23,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:29:23,850 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:29:23,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-21 09:29:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:29:24,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 3377 conjuncts, 97 conjunts are in the unsatisfiable core [2022-07-21 09:29:24,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:29:24,505 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:29:24,600 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-21 09:29:24,624 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:29:24,680 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:29:24,739 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-21 09:29:24,739 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-07-21 09:29:24,769 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-21 09:29:24,769 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-07-21 09:29:24,864 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2912 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2912))) is different from true [2022-07-21 09:29:25,068 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-07-21 09:29:25,073 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-21 09:29:25,073 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-21 09:30:31,469 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2914 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2914)))) is different from true [2022-07-21 09:30:58,336 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 312 proven. 41 refuted. 0 times theorem prover too weak. 201 trivial. 3 not checked. [2022-07-21 09:30:58,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:30:59,655 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_241| Int) (v_ArrVal_2921 Int)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_241| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_241|) 0 v_ArrVal_2921)) |c_ULTIMATE.start_aws_array_list_set_at_harness_~#list~0#1.base|) (+ 32 |c_ULTIMATE.start_aws_array_list_set_at_harness_~#list~0#1.offset|)) 0))) is different from false [2022-07-21 09:30:59,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:30:59,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461114525] [2022-07-21 09:30:59,656 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 09:30:59,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171177734] [2022-07-21 09:30:59,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171177734] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:30:59,656 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:30:59,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2022-07-21 09:30:59,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987305809] [2022-07-21 09:30:59,656 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-21 09:30:59,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-21 09:30:59,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:30:59,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-21 09:30:59,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=822, Unknown=28, NotChecked=180, Total=1122 [2022-07-21 09:30:59,657 INFO L87 Difference]: Start difference. First operand 880 states and 1427 transitions. Second operand has 33 states, 30 states have (on average 3.8) internal successors, (114), 28 states have internal predecessors, (114), 12 states have call successors, (37), 9 states have call predecessors, (37), 11 states have return successors, (35), 12 states have call predecessors, (35), 12 states have call successors, (35)