./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_clear_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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_clear_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 602c22a5759f33fe3c7a18e3ef1531ea38defb370e298f7d0c16de4a5734f1a7 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 23:29:14,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 23:29:14,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 23:29:14,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 23:29:14,268 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 23:29:14,271 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 23:29:14,272 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 23:29:14,274 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 23:29:14,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 23:29:14,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 23:29:14,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 23:29:14,279 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 23:29:14,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 23:29:14,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 23:29:14,282 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 23:29:14,287 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 23:29:14,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 23:29:14,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 23:29:14,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 23:29:14,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 23:29:14,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 23:29:14,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 23:29:14,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 23:29:14,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 23:29:14,302 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 23:29:14,302 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 23:29:14,303 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 23:29:14,304 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 23:29:14,304 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 23:29:14,304 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 23:29:14,305 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 23:29:14,305 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 23:29:14,306 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 23:29:14,307 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 23:29:14,308 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 23:29:14,308 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 23:29:14,308 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 23:29:14,309 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 23:29:14,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 23:29:14,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 23:29:14,310 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 23:29:14,311 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-17 23:29:14,333 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 23:29:14,334 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 23:29:14,334 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 23:29:14,334 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 23:29:14,335 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 23:29:14,335 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 23:29:14,336 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 23:29:14,336 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 23:29:14,336 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 23:29:14,336 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 23:29:14,337 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 23:29:14,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 23:29:14,337 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 23:29:14,337 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 23:29:14,337 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 23:29:14,337 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 23:29:14,338 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 23:29:14,338 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 23:29:14,338 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 23:29:14,338 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 23:29:14,338 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 23:29:14,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 23:29:14,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 23:29:14,339 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 23:29:14,339 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 23:29:14,339 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 23:29:14,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 23:29:14,340 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 23:29:14,340 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 23:29:14,340 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 23:29:14,340 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 23:29:14,341 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 602c22a5759f33fe3c7a18e3ef1531ea38defb370e298f7d0c16de4a5734f1a7 [2021-12-17 23:29:14,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 23:29:14,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 23:29:14,589 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 23:29:14,590 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 23:29:14,590 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 23:29:14,592 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_clear_harness.i [2021-12-17 23:29:14,651 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b022fa662/d692551d845243d9936e90bd6f5117ea/FLAG85f3a7c5a [2021-12-17 23:29:15,237 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 23:29:15,237 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_clear_harness.i [2021-12-17 23:29:15,270 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b022fa662/d692551d845243d9936e90bd6f5117ea/FLAG85f3a7c5a [2021-12-17 23:29:15,680 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b022fa662/d692551d845243d9936e90bd6f5117ea [2021-12-17 23:29:15,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 23:29:15,683 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 23:29:15,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 23:29:15,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 23:29:15,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 23:29:15,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 11:29:15" (1/1) ... [2021-12-17 23:29:15,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54358797 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:29:15, skipping insertion in model container [2021-12-17 23:29:15,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 11:29:15" (1/1) ... [2021-12-17 23:29:15,717 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 23:29:15,792 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 23:29:15,975 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_clear_harness.i[4494,4507] [2021-12-17 23:29:15,981 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_clear_harness.i[4554,4567] [2021-12-17 23:29:16,454 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-17 23:29:16,496 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:29:16,496 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:29:16,497 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:29:16,497 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:29:16,498 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:29:16,504 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:29:16,505 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:29:16,506 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:29:16,506 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:29:16,507 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:29:16,508 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:29:16,509 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:29:16,509 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:29:16,670 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-17 23:29:16,672 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-17 23:29:16,672 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-17 23:29:16,676 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-17 23:29:16,678 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-17 23:29:16,679 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-17 23:29:16,679 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-17 23:29:16,681 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-17 23:29:16,682 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-17 23:29:16,682 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-17 23:29:16,814 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:29:16,822 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:29:16,885 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 23:29:16,907 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 23:29:16,928 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_clear_harness.i[4494,4507] [2021-12-17 23:29:16,929 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_clear_harness.i[4554,4567] [2021-12-17 23:29:16,972 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-17 23:29:16,995 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:29:16,996 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:29:16,996 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:29:16,996 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:29:16,997 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:29:17,002 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:29:17,003 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:29:17,005 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:29:17,005 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:29:17,006 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:29:17,006 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:29:17,006 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:29:17,006 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:29:17,029 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-17 23:29:17,030 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-17 23:29:17,030 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-17 23:29:17,032 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-17 23:29:17,033 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-17 23:29:17,033 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-17 23:29:17,033 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-17 23:29:17,034 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-17 23:29:17,034 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-17 23:29:17,034 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-17 23:29:17,046 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:29:17,050 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:29:17,073 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 23:29:17,200 INFO L208 MainTranslator]: Completed translation [2021-12-17 23:29:17,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:29:17 WrapperNode [2021-12-17 23:29:17,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 23:29:17,201 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 23:29:17,201 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 23:29:17,202 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 23:29:17,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:29:17" (1/1) ... [2021-12-17 23:29:17,252 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:29:17" (1/1) ... [2021-12-17 23:29:17,294 INFO L137 Inliner]: procedures = 690, calls = 1579, calls flagged for inlining = 46, calls inlined = 6, statements flattened = 585 [2021-12-17 23:29:17,295 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 23:29:17,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 23:29:17,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 23:29:17,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 23:29:17,301 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:29:17" (1/1) ... [2021-12-17 23:29:17,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:29:17" (1/1) ... [2021-12-17 23:29:17,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:29:17" (1/1) ... [2021-12-17 23:29:17,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:29:17" (1/1) ... [2021-12-17 23:29:17,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:29:17" (1/1) ... [2021-12-17 23:29:17,334 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:29:17" (1/1) ... [2021-12-17 23:29:17,337 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:29:17" (1/1) ... [2021-12-17 23:29:17,342 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 23:29:17,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 23:29:17,343 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 23:29:17,343 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 23:29:17,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:29:17" (1/1) ... [2021-12-17 23:29:17,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 23:29:17,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 23:29:17,381 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) [2021-12-17 23:29:17,399 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 [2021-12-17 23:29:17,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 23:29:17,425 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-12-17 23:29:17,425 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-12-17 23:29:17,425 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-17 23:29:17,425 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-17 23:29:17,425 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-17 23:29:17,425 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-17 23:29:17,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-17 23:29:17,425 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-17 23:29:17,425 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-17 23:29:17,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-17 23:29:17,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-17 23:29:17,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-17 23:29:17,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 23:29:17,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-17 23:29:17,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 23:29:17,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 23:29:17,426 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-17 23:29:17,427 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-17 23:29:17,427 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-17 23:29:17,427 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-17 23:29:17,427 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-17 23:29:17,427 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-17 23:29:17,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-17 23:29:17,427 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_clear [2021-12-17 23:29:17,427 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_clear [2021-12-17 23:29:17,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-17 23:29:17,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-17 23:29:17,428 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-17 23:29:17,428 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-17 23:29:17,428 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-17 23:29:17,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-17 23:29:17,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-17 23:29:17,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 23:29:17,615 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 23:29:17,630 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 23:29:18,092 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 23:29:18,099 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 23:29:18,099 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-17 23:29:18,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 11:29:18 BoogieIcfgContainer [2021-12-17 23:29:18,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 23:29:18,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 23:29:18,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 23:29:18,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 23:29:18,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 11:29:15" (1/3) ... [2021-12-17 23:29:18,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@240539a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 11:29:18, skipping insertion in model container [2021-12-17 23:29:18,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:29:17" (2/3) ... [2021-12-17 23:29:18,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@240539a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 11:29:18, skipping insertion in model container [2021-12-17 23:29:18,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 11:29:18" (3/3) ... [2021-12-17 23:29:18,107 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_clear_harness.i [2021-12-17 23:29:18,113 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 23:29:18,113 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 23:29:18,152 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 23:29:18,159 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 23:29:18,159 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 23:29:18,178 INFO L276 IsEmpty]: Start isEmpty. Operand has 101 states, 63 states have (on average 1.1904761904761905) internal successors, (75), 64 states have internal predecessors, (75), 25 states have call successors, (25), 11 states have call predecessors, (25), 11 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-17 23:29:18,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-17 23:29:18,185 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 23:29:18,185 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-12-17 23:29:18,186 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 23:29:18,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:29:18,193 INFO L85 PathProgramCache]: Analyzing trace with hash 118758327, now seen corresponding path program 1 times [2021-12-17 23:29:18,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:29:18,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609744616] [2021-12-17 23:29:18,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:29:18,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:29:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:29:18,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 23:29:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:29:18,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 23:29:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:29:18,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 23:29:18,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:29:18,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-17 23:29:18,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:29:18,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-17 23:29:18,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:29:18,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 23:29:18,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:29:18,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 23:29:18,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:29:18,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-17 23:29:18,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:29:18,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 23:29:18,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:29:18,653 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-17 23:29:18,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:29:18,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609744616] [2021-12-17 23:29:18,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609744616] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:29:18,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:29:18,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 23:29:18,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936000370] [2021-12-17 23:29:18,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:29:18,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 23:29:18,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:29:18,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 23:29:18,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 23:29:18,685 INFO L87 Difference]: Start difference. First operand has 101 states, 63 states have (on average 1.1904761904761905) internal successors, (75), 64 states have internal predecessors, (75), 25 states have call successors, (25), 11 states have call predecessors, (25), 11 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-17 23:29:18,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 23:29:18,925 INFO L93 Difference]: Finished difference Result 205 states and 276 transitions. [2021-12-17 23:29:18,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 23:29:18,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 60 [2021-12-17 23:29:18,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 23:29:18,938 INFO L225 Difference]: With dead ends: 205 [2021-12-17 23:29:18,938 INFO L226 Difference]: Without dead ends: 106 [2021-12-17 23:29:18,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 23:29:18,944 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 24 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 23:29:18,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 146 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 23:29:18,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-12-17 23:29:18,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 96. [2021-12-17 23:29:18,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 59 states have (on average 1.1694915254237288) internal successors, (69), 60 states have internal predecessors, (69), 25 states have call successors, (25), 11 states have call predecessors, (25), 11 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-17 23:29:18,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 118 transitions. [2021-12-17 23:29:18,990 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 118 transitions. Word has length 60 [2021-12-17 23:29:18,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 23:29:18,991 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 118 transitions. [2021-12-17 23:29:18,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-17 23:29:18,993 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 118 transitions. [2021-12-17 23:29:18,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-17 23:29:18,997 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 23:29:18,998 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-12-17 23:29:18,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 23:29:18,998 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 23:29:18,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:29:18,999 INFO L85 PathProgramCache]: Analyzing trace with hash 519821299, now seen corresponding path program 1 times [2021-12-17 23:29:18,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:29:18,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021327596] [2021-12-17 23:29:19,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:29:19,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:29:19,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:29:19,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 23:29:19,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:29:19,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 23:29:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:29:19,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 23:29:19,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:29:19,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-17 23:29:19,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:29:19,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-17 23:29:19,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:29:19,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 23:29:19,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:29:19,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 23:29:19,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:29:19,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-17 23:29:19,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:29:19,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 23:29:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:29:19,253 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 23:29:19,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:29:19,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021327596] [2021-12-17 23:29:19,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021327596] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 23:29:19,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322141203] [2021-12-17 23:29:19,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:29:19,254 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 23:29:19,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 23:29:19,256 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) [2021-12-17 23:29:19,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 23:29:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:29:19,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 2015 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-17 23:29:19,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 23:29:19,763 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-17 23:29:19,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 23:29:19,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322141203] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:29:19,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 23:29:19,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2021-12-17 23:29:19,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333454992] [2021-12-17 23:29:19,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:29:19,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 23:29:19,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:29:19,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 23:29:19,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-17 23:29:19,767 INFO L87 Difference]: Start difference. First operand 96 states and 118 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-17 23:29:19,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 23:29:19,908 INFO L93 Difference]: Finished difference Result 160 states and 199 transitions. [2021-12-17 23:29:19,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 23:29:19,908 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 60 [2021-12-17 23:29:19,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 23:29:19,909 INFO L225 Difference]: With dead ends: 160 [2021-12-17 23:29:19,909 INFO L226 Difference]: Without dead ends: 98 [2021-12-17 23:29:19,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-12-17 23:29:19,911 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 123 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 23:29:19,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 300 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 23:29:19,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-12-17 23:29:19,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-12-17 23:29:19,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 60 states have (on average 1.1666666666666667) internal successors, (70), 62 states have internal predecessors, (70), 25 states have call successors, (25), 11 states have call predecessors, (25), 12 states have return successors, (26), 24 states have call predecessors, (26), 24 states have call successors, (26) [2021-12-17 23:29:19,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 121 transitions. [2021-12-17 23:29:19,919 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 121 transitions. Word has length 60 [2021-12-17 23:29:19,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 23:29:19,920 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 121 transitions. [2021-12-17 23:29:19,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-17 23:29:19,920 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 121 transitions. [2021-12-17 23:29:19,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-17 23:29:19,921 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 23:29:19,921 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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] [2021-12-17 23:29:19,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 23:29:20,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 23:29:20,141 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 23:29:20,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:29:20,142 INFO L85 PathProgramCache]: Analyzing trace with hash 682812913, now seen corresponding path program 1 times [2021-12-17 23:29:20,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:29:20,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681790159] [2021-12-17 23:29:20,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:29:20,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:29:20,180 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 23:29:20,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [798410830] [2021-12-17 23:29:20,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:29:20,181 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 23:29:20,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 23:29:20,182 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) [2021-12-17 23:29:20,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 23:29:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:29:20,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 2151 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-17 23:29:20,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 23:29:20,594 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-17 23:29:20,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 23:29:20,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:29:20,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681790159] [2021-12-17 23:29:20,595 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 23:29:20,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798410830] [2021-12-17 23:29:20,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798410830] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:29:20,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:29:20,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 23:29:20,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981726913] [2021-12-17 23:29:20,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:29:20,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 23:29:20,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:29:20,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 23:29:20,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-17 23:29:20,597 INFO L87 Difference]: Start difference. First operand 98 states and 121 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 23:29:20,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 23:29:20,623 INFO L93 Difference]: Finished difference Result 167 states and 212 transitions. [2021-12-17 23:29:20,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 23:29:20,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 75 [2021-12-17 23:29:20,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 23:29:20,624 INFO L225 Difference]: With dead ends: 167 [2021-12-17 23:29:20,625 INFO L226 Difference]: Without dead ends: 103 [2021-12-17 23:29:20,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-17 23:29:20,626 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 10 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 341 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 [2021-12-17 23:29:20,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 341 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 23:29:20,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-12-17 23:29:20,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 100. [2021-12-17 23:29:20,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 62 states have (on average 1.1612903225806452) internal successors, (72), 64 states have internal predecessors, (72), 25 states have call successors, (25), 11 states have call predecessors, (25), 12 states have return successors, (26), 24 states have call predecessors, (26), 24 states have call successors, (26) [2021-12-17 23:29:20,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 123 transitions. [2021-12-17 23:29:20,633 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 123 transitions. Word has length 75 [2021-12-17 23:29:20,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 23:29:20,633 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 123 transitions. [2021-12-17 23:29:20,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-17 23:29:20,634 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 123 transitions. [2021-12-17 23:29:20,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-17 23:29:20,635 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 23:29:20,635 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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] [2021-12-17 23:29:20,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-17 23:29:20,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-17 23:29:20,849 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 23:29:20,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:29:20,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1526818415, now seen corresponding path program 1 times [2021-12-17 23:29:20,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:29:20,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372628050] [2021-12-17 23:29:20,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:29:20,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:29:20,915 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 23:29:20,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2066278756] [2021-12-17 23:29:20,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:29:20,916 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 23:29:20,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 23:29:20,917 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) [2021-12-17 23:29:20,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-17 23:29:21,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:29:21,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 2156 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-17 23:29:21,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 23:29:21,356 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-17 23:29:21,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 23:29:21,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:29:21,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372628050] [2021-12-17 23:29:21,357 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 23:29:21,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066278756] [2021-12-17 23:29:21,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066278756] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:29:21,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:29:21,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 23:29:21,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061673834] [2021-12-17 23:29:21,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:29:21,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 23:29:21,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:29:21,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 23:29:21,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 23:29:21,359 INFO L87 Difference]: Start difference. First operand 100 states and 123 transitions. Second operand has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-17 23:29:21,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 23:29:21,541 INFO L93 Difference]: Finished difference Result 161 states and 196 transitions. [2021-12-17 23:29:21,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 23:29:21,542 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 75 [2021-12-17 23:29:21,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 23:29:21,543 INFO L225 Difference]: With dead ends: 161 [2021-12-17 23:29:21,543 INFO L226 Difference]: Without dead ends: 98 [2021-12-17 23:29:21,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-12-17 23:29:21,544 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 128 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 23:29:21,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 427 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 23:29:21,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-12-17 23:29:21,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-12-17 23:29:21,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 61 states have (on average 1.1475409836065573) internal successors, (70), 62 states have internal predecessors, (70), 25 states have call successors, (25), 11 states have call predecessors, (25), 11 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-17 23:29:21,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 119 transitions. [2021-12-17 23:29:21,551 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 119 transitions. Word has length 75 [2021-12-17 23:29:21,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 23:29:21,551 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 119 transitions. [2021-12-17 23:29:21,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-17 23:29:21,552 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 119 transitions. [2021-12-17 23:29:21,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-17 23:29:21,553 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 23:29:21,553 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2021-12-17 23:29:21,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-17 23:29:21,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 23:29:21,769 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 23:29:21,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:29:21,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1686649477, now seen corresponding path program 1 times [2021-12-17 23:29:21,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:29:21,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434384607] [2021-12-17 23:29:21,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:29:21,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:29:21,822 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 23:29:21,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1163919006] [2021-12-17 23:29:21,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:29:21,823 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 23:29:21,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 23:29:21,824 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) [2021-12-17 23:29:21,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-17 23:29:22,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:29:22,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 2438 conjuncts, 71 conjunts are in the unsatisfiable core [2021-12-17 23:29:22,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 23:29:22,606 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_312 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_312))) (exists ((v_ArrVal_311 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_311))))) is different from true [2021-12-17 23:29:22,988 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-17 23:29:22,989 INFO L388 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 14 treesize of output 20 [2021-12-17 23:29:23,013 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-17 23:29:23,013 INFO L388 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 14 treesize of output 20 [2021-12-17 23:29:23,089 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-17 23:29:23,090 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 23:29:23,090 INFO L388 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 17 treesize of output 10 [2021-12-17 23:29:23,105 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-17 23:29:23,106 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 23:29:23,106 INFO L388 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 17 treesize of output 10 [2021-12-17 23:29:23,142 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-17 23:29:23,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 23:29:23,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:29:23,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434384607] [2021-12-17 23:29:23,143 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 23:29:23,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163919006] [2021-12-17 23:29:23,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163919006] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:29:23,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:29:23,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-17 23:29:23,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987288315] [2021-12-17 23:29:23,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:29:23,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-17 23:29:23,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:29:23,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-17 23:29:23,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=244, Unknown=21, NotChecked=32, Total=342 [2021-12-17 23:29:23,146 INFO L87 Difference]: Start difference. First operand 98 states and 119 transitions. Second operand has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 18 states have internal predecessors, (65), 8 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2021-12-17 23:29:23,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 23:29:23,775 INFO L93 Difference]: Finished difference Result 212 states and 286 transitions. [2021-12-17 23:29:23,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-17 23:29:23,775 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 18 states have internal predecessors, (65), 8 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 105 [2021-12-17 23:29:23,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 23:29:23,777 INFO L225 Difference]: With dead ends: 212 [2021-12-17 23:29:23,777 INFO L226 Difference]: Without dead ends: 160 [2021-12-17 23:29:23,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 84 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=569, Unknown=32, NotChecked=50, Total=756 [2021-12-17 23:29:23,778 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 92 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 1552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 654 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 23:29:23,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 645 Invalid, 1552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 846 Invalid, 0 Unknown, 654 Unchecked, 0.5s Time] [2021-12-17 23:29:23,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-12-17 23:29:23,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 143. [2021-12-17 23:29:23,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 90 states have (on average 1.1444444444444444) internal successors, (103), 94 states have internal predecessors, (103), 34 states have call successors, (34), 13 states have call predecessors, (34), 18 states have return successors, (57), 35 states have call predecessors, (57), 33 states have call successors, (57) [2021-12-17 23:29:23,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 194 transitions. [2021-12-17 23:29:23,805 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 194 transitions. Word has length 105 [2021-12-17 23:29:23,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 23:29:23,806 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 194 transitions. [2021-12-17 23:29:23,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 18 states have internal predecessors, (65), 8 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2021-12-17 23:29:23,806 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 194 transitions. [2021-12-17 23:29:23,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-17 23:29:23,808 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 23:29:23,808 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-17 23:29:23,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-17 23:29:24,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 23:29:24,029 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 23:29:24,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:29:24,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1342737543, now seen corresponding path program 1 times [2021-12-17 23:29:24,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:29:24,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877933699] [2021-12-17 23:29:24,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:29:24,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:29:24,061 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 23:29:24,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1661204272] [2021-12-17 23:29:24,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:29:24,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 23:29:24,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 23:29:24,068 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) [2021-12-17 23:29:24,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-17 23:29:24,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:29:24,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 2433 conjuncts, 54 conjunts are in the unsatisfiable core [2021-12-17 23:29:24,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 23:29:24,595 INFO L388 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 15 treesize of output 7 [2021-12-17 23:29:24,597 INFO L388 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 15 treesize of output 7 [2021-12-17 23:29:24,867 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 56 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-17 23:29:24,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 23:29:25,484 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-17 23:29:25,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:29:25,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877933699] [2021-12-17 23:29:25,485 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 23:29:25,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661204272] [2021-12-17 23:29:25,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661204272] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 23:29:25,485 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 23:29:25,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 25 [2021-12-17 23:29:25,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802990315] [2021-12-17 23:29:25,486 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 23:29:25,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-17 23:29:25,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:29:25,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-17 23:29:25,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=545, Unknown=0, NotChecked=0, Total=600 [2021-12-17 23:29:25,487 INFO L87 Difference]: Start difference. First operand 143 states and 194 transitions. Second operand has 25 states, 21 states have (on average 4.476190476190476) internal successors, (94), 18 states have internal predecessors, (94), 7 states have call successors, (23), 4 states have call predecessors, (23), 8 states have return successors, (24), 9 states have call predecessors, (24), 6 states have call successors, (24) [2021-12-17 23:29:25,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 23:29:25,770 INFO L93 Difference]: Finished difference Result 232 states and 307 transitions. [2021-12-17 23:29:25,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-17 23:29:25,771 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 4.476190476190476) internal successors, (94), 18 states have internal predecessors, (94), 7 states have call successors, (23), 4 states have call predecessors, (23), 8 states have return successors, (24), 9 states have call predecessors, (24), 6 states have call successors, (24) Word has length 117 [2021-12-17 23:29:25,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 23:29:25,772 INFO L225 Difference]: With dead ends: 232 [2021-12-17 23:29:25,772 INFO L226 Difference]: Without dead ends: 141 [2021-12-17 23:29:25,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 207 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=959, Unknown=0, NotChecked=0, Total=1056 [2021-12-17 23:29:25,773 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 38 mSDsluCounter, 1862 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 23:29:25,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 1983 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 269 Invalid, 0 Unknown, 32 Unchecked, 0.1s Time] [2021-12-17 23:29:25,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-12-17 23:29:25,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 139. [2021-12-17 23:29:25,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 89 states have (on average 1.1348314606741574) internal successors, (101), 93 states have internal predecessors, (101), 31 states have call successors, (31), 14 states have call predecessors, (31), 18 states have return successors, (46), 31 states have call predecessors, (46), 30 states have call successors, (46) [2021-12-17 23:29:25,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 178 transitions. [2021-12-17 23:29:25,794 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 178 transitions. Word has length 117 [2021-12-17 23:29:25,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 23:29:25,794 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 178 transitions. [2021-12-17 23:29:25,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 4.476190476190476) internal successors, (94), 18 states have internal predecessors, (94), 7 states have call successors, (23), 4 states have call predecessors, (23), 8 states have return successors, (24), 9 states have call predecessors, (24), 6 states have call successors, (24) [2021-12-17 23:29:25,795 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 178 transitions. [2021-12-17 23:29:25,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-17 23:29:25,796 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 23:29:25,796 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2021-12-17 23:29:25,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-17 23:29:26,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 23:29:26,009 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 23:29:26,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:29:26,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1827198087, now seen corresponding path program 1 times [2021-12-17 23:29:26,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:29:26,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584847781] [2021-12-17 23:29:26,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:29:26,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:29:26,068 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 23:29:26,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2035571323] [2021-12-17 23:29:26,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:29:26,069 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 23:29:26,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 23:29:26,070 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) [2021-12-17 23:29:26,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-17 23:29:26,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:29:26,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 2425 conjuncts, 242 conjunts are in the unsatisfiable core [2021-12-17 23:29:26,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 23:29:26,510 INFO L388 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 [2021-12-17 23:29:26,654 INFO L388 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 [2021-12-17 23:29:26,658 INFO L388 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 [2021-12-17 23:29:27,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 23:29:27,055 INFO L354 Elim1Store]: treesize reduction 44, result has 47.0 percent of original size [2021-12-17 23:29:27,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 25 treesize of output 48 [2021-12-17 23:29:40,674 INFO L354 Elim1Store]: treesize reduction 53, result has 32.9 percent of original size [2021-12-17 23:29:40,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 53 [2021-12-17 23:29:48,398 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-17 23:29:48,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-17 23:29:50,272 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_492 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_492))) is different from true [2021-12-17 23:29:50,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 23:29:50,984 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-17 23:29:50,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 66 [2021-12-17 23:29:50,997 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-17 23:29:50,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-17 23:29:51,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2021-12-17 23:36:08,134 WARN L227 SmtUtils]: Spent 1.07m on a formula simplification that was a NOOP. DAG size: 13 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Killed by 15