./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_array_list_copy_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 3a98a47bac7562a35bba31573ebdfd704a9d27baca1b439deea796ac12a0961b --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:28:05,362 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:28:05,364 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:28:05,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:28:05,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:28:05,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:28:05,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:28:05,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:28:05,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:28:05,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:28:05,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:28:05,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:28:05,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:28:05,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:28:05,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:28:05,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:28:05,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:28:05,414 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:28:05,415 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:28:05,416 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:28:05,417 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:28:05,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:28:05,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:28:05,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:28:05,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:28:05,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:28:05,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:28:05,430 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:28:05,430 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:28:05,431 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:28:05,432 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:28:05,432 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:28:05,433 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:28:05,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:28:05,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:28:05,435 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:28:05,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:28:05,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:28:05,435 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:28:05,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:28:05,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:28:05,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:28:05,439 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-13 22:28:05,457 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:28:05,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:28:05,458 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:28:05,458 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:28:05,459 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:28:05,459 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:28:05,459 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:28:05,459 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:28:05,459 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:28:05,460 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:28:05,460 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:28:05,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:28:05,461 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:28:05,461 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:28:05,461 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:28:05,461 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:28:05,461 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:28:05,461 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:28:05,461 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:28:05,462 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:28:05,462 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:28:05,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:28:05,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:28:05,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:28:05,463 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:28:05,463 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:28:05,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:28:05,464 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:28:05,464 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:28:05,464 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:28:05,464 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a98a47bac7562a35bba31573ebdfd704a9d27baca1b439deea796ac12a0961b [2022-07-13 22:28:05,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:28:05,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:28:05,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:28:05,713 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:28:05,713 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:28:05,714 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i [2022-07-13 22:28:05,769 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3094e81ae/69ff044462ba4096b63a1a7ebde5da28/FLAG9be5b3389 [2022-07-13 22:28:06,418 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:28:06,419 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i [2022-07-13 22:28:06,443 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3094e81ae/69ff044462ba4096b63a1a7ebde5da28/FLAG9be5b3389 [2022-07-13 22:28:06,571 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3094e81ae/69ff044462ba4096b63a1a7ebde5da28 [2022-07-13 22:28:06,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:28:06,575 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:28:06,589 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:28:06,589 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:28:06,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:28:06,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:28:06" (1/1) ... [2022-07-13 22:28:06,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a8fab36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:06, skipping insertion in model container [2022-07-13 22:28:06,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:28:06" (1/1) ... [2022-07-13 22:28:06,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:28:06,702 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:28:06,901 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_copy_harness.i[4493,4506] [2022-07-13 22:28:06,906 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_copy_harness.i[4553,4566] [2022-07-13 22:28:07,367 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-13 22:28:07,425 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:07,426 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:07,427 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:07,428 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:07,429 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:07,435 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:07,439 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:07,440 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:07,440 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:07,441 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:07,442 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:07,442 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:07,442 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:07,637 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:28:07,638 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:28:07,639 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:28:07,655 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:28:07,655 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:28:07,656 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:28:07,656 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:28:07,659 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:28:07,659 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:28:07,659 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:28:07,738 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:07,756 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:07,760 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:07,764 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:07,817 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:28:07,849 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:28:07,867 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_copy_harness.i[4493,4506] [2022-07-13 22:28:07,867 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_copy_harness.i[4553,4566] [2022-07-13 22:28:07,906 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-13 22:28:07,916 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:07,920 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:07,921 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:07,921 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:07,922 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:07,927 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:07,927 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:07,930 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:07,931 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:07,932 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:07,932 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:07,932 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:07,933 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:07,965 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:28:07,966 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:28:07,967 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:28:07,967 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:28:07,968 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:28:07,968 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:28:07,968 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:28:07,969 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:28:07,969 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:28:07,970 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:28:07,994 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:07,995 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:07,995 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:07,998 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:28:08,021 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:28:08,147 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:28:08,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:08 WrapperNode [2022-07-13 22:28:08,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:28:08,149 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:28:08,149 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:28:08,149 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:28:08,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:08" (1/1) ... [2022-07-13 22:28:08,222 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:08" (1/1) ... [2022-07-13 22:28:08,282 INFO L137 Inliner]: procedures = 691, calls = 1673, calls flagged for inlining = 52, calls inlined = 7, statements flattened = 695 [2022-07-13 22:28:08,282 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:28:08,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:28:08,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:28:08,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:28:08,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:08" (1/1) ... [2022-07-13 22:28:08,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:08" (1/1) ... [2022-07-13 22:28:08,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:08" (1/1) ... [2022-07-13 22:28:08,298 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:08" (1/1) ... [2022-07-13 22:28:08,334 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:08" (1/1) ... [2022-07-13 22:28:08,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:08" (1/1) ... [2022-07-13 22:28:08,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:08" (1/1) ... [2022-07-13 22:28:08,362 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:28:08,363 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:28:08,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:28:08,367 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:28:08,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:08" (1/1) ... [2022-07-13 22:28:08,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:28:08,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:28:08,405 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 22:28:08,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 22:28:08,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:28:08,479 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-07-13 22:28:08,479 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-07-13 22:28:08,479 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-07-13 22:28:08,479 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-07-13 22:28:08,479 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-13 22:28:08,480 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-13 22:28:08,480 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-07-13 22:28:08,480 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-07-13 22:28:08,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:28:08,480 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-13 22:28:08,480 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-13 22:28:08,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-13 22:28:08,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-13 22:28:08,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 22:28:08,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:28:08,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 22:28:08,481 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-07-13 22:28:08,482 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-07-13 22:28:08,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:28:08,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:28:08,482 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-13 22:28:08,482 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-13 22:28:08,482 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-13 22:28:08,483 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-13 22:28:08,483 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-07-13 22:28:08,483 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-07-13 22:28:08,483 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-07-13 22:28:08,483 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-07-13 22:28:08,483 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-13 22:28:08,483 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-13 22:28:08,484 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-07-13 22:28:08,484 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-07-13 22:28:08,484 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-07-13 22:28:08,484 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-07-13 22:28:08,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:28:08,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 22:28:08,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-13 22:28:08,484 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-13 22:28:08,485 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-13 22:28:08,485 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-13 22:28:08,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-13 22:28:08,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:28:08,485 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-07-13 22:28:08,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-07-13 22:28:08,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:28:08,732 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:28:08,733 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:28:09,283 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:28:09,288 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:28:09,288 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 22:28:09,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:28:09 BoogieIcfgContainer [2022-07-13 22:28:09,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:28:09,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:28:09,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:28:09,293 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:28:09,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:28:06" (1/3) ... [2022-07-13 22:28:09,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402be3c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:28:09, skipping insertion in model container [2022-07-13 22:28:09,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:28:08" (2/3) ... [2022-07-13 22:28:09,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402be3c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:28:09, skipping insertion in model container [2022-07-13 22:28:09,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:28:09" (3/3) ... [2022-07-13 22:28:09,295 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_copy_harness.i [2022-07-13 22:28:09,304 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:28:09,305 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:28:09,337 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:28:09,341 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@44abe65f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@160bf683 [2022-07-13 22:28:09,342 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 22:28:09,345 INFO L276 IsEmpty]: Start isEmpty. Operand has 209 states, 119 states have (on average 1.184873949579832) internal successors, (141), 120 states have internal predecessors, (141), 71 states have call successors, (71), 17 states have call predecessors, (71), 17 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-07-13 22:28:09,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 22:28:09,355 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:28:09,360 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:28:09,361 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:28:09,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:28:09,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1428143905, now seen corresponding path program 1 times [2022-07-13 22:28:09,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:28:09,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052718454] [2022-07-13 22:28:09,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:09,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:28:09,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:09,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:28:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:09,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:28:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:09,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:28:09,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:09,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:28:09,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:09,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:28:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:09,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 22:28:09,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:09,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 22:28:09,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:09,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 22:28:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:09,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 22:28:09,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:09,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 22:28:09,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:09,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:28:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:09,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:28:09,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:10,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 22:28:10,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:10,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 22:28:10,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:10,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 22:28:10,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:10,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 22:28:10,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:10,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 22:28:10,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:10,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 22:28:10,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:10,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 22:28:10,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:10,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 22:28:10,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:10,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 22:28:10,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:10,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-13 22:28:10,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:10,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-13 22:28:10,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:28:10,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052718454] [2022-07-13 22:28:10,110 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-07-13 22:28:10,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280832864] [2022-07-13 22:28:10,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:10,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:10,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:28:10,132 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:28:10,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 22:28:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:10,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 2347 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 22:28:10,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:28:10,572 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2022-07-13 22:28:10,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:28:10,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280832864] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:28:10,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:28:10,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:28:10,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380900503] [2022-07-13 22:28:10,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:28:10,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:28:10,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:28:10,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:28:10,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-13 22:28:10,596 INFO L87 Difference]: Start difference. First operand has 209 states, 119 states have (on average 1.184873949579832) internal successors, (141), 120 states have internal predecessors, (141), 71 states have call successors, (71), 17 states have call predecessors, (71), 17 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-07-13 22:28:11,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:28:11,019 INFO L93 Difference]: Finished difference Result 416 states and 618 transitions. [2022-07-13 22:28:11,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:28:11,021 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 145 [2022-07-13 22:28:11,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:28:11,035 INFO L225 Difference]: With dead ends: 416 [2022-07-13 22:28:11,035 INFO L226 Difference]: Without dead ends: 206 [2022-07-13 22:28:11,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:28:11,045 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 276 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:28:11,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 778 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 22:28:11,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-07-13 22:28:11,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2022-07-13 22:28:11,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 116 states have (on average 1.1724137931034482) internal successors, (136), 118 states have internal predecessors, (136), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (82), 70 states have call predecessors, (82), 70 states have call successors, (82) [2022-07-13 22:28:11,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 289 transitions. [2022-07-13 22:28:11,109 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 289 transitions. Word has length 145 [2022-07-13 22:28:11,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:28:11,109 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 289 transitions. [2022-07-13 22:28:11,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-07-13 22:28:11,110 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 289 transitions. [2022-07-13 22:28:11,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-13 22:28:11,119 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:28:11,120 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:28:11,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 22:28:11,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-13 22:28:11,340 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:28:11,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:28:11,341 INFO L85 PathProgramCache]: Analyzing trace with hash 484121766, now seen corresponding path program 1 times [2022-07-13 22:28:11,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:28:11,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098294151] [2022-07-13 22:28:11,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:11,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:28:11,411 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:28:11,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1965908661] [2022-07-13 22:28:11,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:11,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:11,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:28:11,423 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:28:11,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 22:28:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:11,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 2483 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 22:28:11,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:28:11,803 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2022-07-13 22:28:11,819 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:28:11,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:28:11,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098294151] [2022-07-13 22:28:11,820 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:28:11,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965908661] [2022-07-13 22:28:11,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965908661] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:28:11,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:28:11,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 22:28:11,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328012100] [2022-07-13 22:28:11,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:28:11,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:28:11,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:28:11,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:28:11,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:28:11,823 INFO L87 Difference]: Start difference. First operand 206 states and 289 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-13 22:28:11,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:28:11,849 INFO L93 Difference]: Finished difference Result 410 states and 588 transitions. [2022-07-13 22:28:11,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:28:11,849 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 160 [2022-07-13 22:28:11,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:28:11,851 INFO L225 Difference]: With dead ends: 410 [2022-07-13 22:28:11,851 INFO L226 Difference]: Without dead ends: 211 [2022-07-13 22:28:11,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:28:11,853 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 10 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:28:11,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 815 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:28:11,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-07-13 22:28:11,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 208. [2022-07-13 22:28:11,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 118 states have (on average 1.1694915254237288) internal successors, (138), 120 states have internal predecessors, (138), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (82), 70 states have call predecessors, (82), 70 states have call successors, (82) [2022-07-13 22:28:11,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 291 transitions. [2022-07-13 22:28:11,866 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 291 transitions. Word has length 160 [2022-07-13 22:28:11,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:28:11,867 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 291 transitions. [2022-07-13 22:28:11,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-13 22:28:11,867 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 291 transitions. [2022-07-13 22:28:11,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-13 22:28:11,884 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:28:11,884 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:28:11,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 22:28:12,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-07-13 22:28:12,104 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:28:12,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:28:12,104 INFO L85 PathProgramCache]: Analyzing trace with hash -2088842844, now seen corresponding path program 1 times [2022-07-13 22:28:12,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:28:12,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122290805] [2022-07-13 22:28:12,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:12,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:28:12,176 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:28:12,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [539751634] [2022-07-13 22:28:12,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:12,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:12,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:28:12,178 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:28:12,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 22:28:12,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:12,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 2488 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 22:28:12,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:28:12,559 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-07-13 22:28:12,560 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:28:12,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:28:12,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122290805] [2022-07-13 22:28:12,560 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:28:12,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539751634] [2022-07-13 22:28:12,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539751634] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:28:12,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:28:12,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:28:12,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074798184] [2022-07-13 22:28:12,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:28:12,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:28:12,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:28:12,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:28:12,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:28:12,563 INFO L87 Difference]: Start difference. First operand 208 states and 291 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-07-13 22:28:12,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:28:12,817 INFO L93 Difference]: Finished difference Result 383 states and 533 transitions. [2022-07-13 22:28:12,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:28:12,817 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 160 [2022-07-13 22:28:12,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:28:12,819 INFO L225 Difference]: With dead ends: 383 [2022-07-13 22:28:12,819 INFO L226 Difference]: Without dead ends: 208 [2022-07-13 22:28:12,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:28:12,820 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 270 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 22:28:12,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 769 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 22:28:12,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-07-13 22:28:12,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2022-07-13 22:28:12,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 118 states have (on average 1.1694915254237288) internal successors, (138), 120 states have internal predecessors, (138), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (80), 70 states have call predecessors, (80), 70 states have call successors, (80) [2022-07-13 22:28:12,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 289 transitions. [2022-07-13 22:28:12,835 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 289 transitions. Word has length 160 [2022-07-13 22:28:12,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:28:12,835 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 289 transitions. [2022-07-13 22:28:12,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-07-13 22:28:12,836 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 289 transitions. [2022-07-13 22:28:12,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-13 22:28:12,837 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:28:12,837 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:28:12,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 22:28:13,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:13,058 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:28:13,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:28:13,058 INFO L85 PathProgramCache]: Analyzing trace with hash 2066938953, now seen corresponding path program 2 times [2022-07-13 22:28:13,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:28:13,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656108157] [2022-07-13 22:28:13,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:13,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:28:13,127 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:28:13,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1930193625] [2022-07-13 22:28:13,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:28:13,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:13,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:28:13,129 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:28:13,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 22:28:13,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-13 22:28:13,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:28:13,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 1926 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 22:28:13,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:28:13,484 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2022-07-13 22:28:13,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:28:13,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:28:13,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656108157] [2022-07-13 22:28:13,485 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:28:13,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930193625] [2022-07-13 22:28:13,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930193625] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:28:13,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:28:13,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:28:13,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944671245] [2022-07-13 22:28:13,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:28:13,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:28:13,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:28:13,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:28:13,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:28:13,487 INFO L87 Difference]: Start difference. First operand 208 states and 289 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2022-07-13 22:28:13,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:28:13,512 INFO L93 Difference]: Finished difference Result 269 states and 367 transitions. [2022-07-13 22:28:13,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:28:13,513 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 175 [2022-07-13 22:28:13,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:28:13,514 INFO L225 Difference]: With dead ends: 269 [2022-07-13 22:28:13,514 INFO L226 Difference]: Without dead ends: 213 [2022-07-13 22:28:13,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:28:13,516 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 2 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:28:13,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1085 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:28:13,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-07-13 22:28:13,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2022-07-13 22:28:13,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 122 states have (on average 1.1639344262295082) internal successors, (142), 124 states have internal predecessors, (142), 71 states have call successors, (71), 17 states have call predecessors, (71), 19 states have return successors, (82), 71 states have call predecessors, (82), 70 states have call successors, (82) [2022-07-13 22:28:13,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 295 transitions. [2022-07-13 22:28:13,531 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 295 transitions. Word has length 175 [2022-07-13 22:28:13,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:28:13,532 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 295 transitions. [2022-07-13 22:28:13,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2022-07-13 22:28:13,532 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 295 transitions. [2022-07-13 22:28:13,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-07-13 22:28:13,533 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:28:13,534 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:28:13,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 22:28:13,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:13,742 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:28:13,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:28:13,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1798085459, now seen corresponding path program 1 times [2022-07-13 22:28:13,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:28:13,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289188505] [2022-07-13 22:28:13,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:13,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:28:13,804 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:28:13,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1174414740] [2022-07-13 22:28:13,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:13,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:13,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:28:13,820 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:28:13,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 22:28:14,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:14,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 2633 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 22:28:14,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:28:14,312 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2022-07-13 22:28:14,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:28:14,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:28:14,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289188505] [2022-07-13 22:28:14,313 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:28:14,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174414740] [2022-07-13 22:28:14,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174414740] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:28:14,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:28:14,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:28:14,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415483940] [2022-07-13 22:28:14,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:28:14,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:28:14,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:28:14,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:28:14,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:28:14,314 INFO L87 Difference]: Start difference. First operand 213 states and 295 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2022-07-13 22:28:14,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:28:14,583 INFO L93 Difference]: Finished difference Result 382 states and 524 transitions. [2022-07-13 22:28:14,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:28:14,583 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 181 [2022-07-13 22:28:14,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:28:14,585 INFO L225 Difference]: With dead ends: 382 [2022-07-13 22:28:14,585 INFO L226 Difference]: Without dead ends: 213 [2022-07-13 22:28:14,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-07-13 22:28:14,589 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 305 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 22:28:14,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 914 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 22:28:14,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-07-13 22:28:14,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2022-07-13 22:28:14,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 122 states have (on average 1.1639344262295082) internal successors, (142), 124 states have internal predecessors, (142), 71 states have call successors, (71), 17 states have call predecessors, (71), 19 states have return successors, (77), 71 states have call predecessors, (77), 70 states have call successors, (77) [2022-07-13 22:28:14,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 290 transitions. [2022-07-13 22:28:14,601 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 290 transitions. Word has length 181 [2022-07-13 22:28:14,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:28:14,602 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 290 transitions. [2022-07-13 22:28:14,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2022-07-13 22:28:14,602 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 290 transitions. [2022-07-13 22:28:14,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-07-13 22:28:14,604 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:28:14,604 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:28:14,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-13 22:28:14,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:14,820 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:28:14,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:28:14,820 INFO L85 PathProgramCache]: Analyzing trace with hash -71678011, now seen corresponding path program 1 times [2022-07-13 22:28:14,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:28:14,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58752762] [2022-07-13 22:28:14,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:14,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:28:14,919 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:28:14,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1364032392] [2022-07-13 22:28:14,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:14,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:14,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:28:14,921 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:28:14,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 22:28:15,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:15,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 2787 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 22:28:15,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:28:15,435 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2022-07-13 22:28:15,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:28:15,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:28:15,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58752762] [2022-07-13 22:28:15,435 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:28:15,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364032392] [2022-07-13 22:28:15,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364032392] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:28:15,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:28:15,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:28:15,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273099498] [2022-07-13 22:28:15,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:28:15,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:28:15,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:28:15,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:28:15,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:28:15,438 INFO L87 Difference]: Start difference. First operand 213 states and 290 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-13 22:28:15,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:28:15,706 INFO L93 Difference]: Finished difference Result 379 states and 509 transitions. [2022-07-13 22:28:15,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:28:15,707 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 195 [2022-07-13 22:28:15,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:28:15,709 INFO L225 Difference]: With dead ends: 379 [2022-07-13 22:28:15,709 INFO L226 Difference]: Without dead ends: 211 [2022-07-13 22:28:15,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-07-13 22:28:15,710 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 304 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 22:28:15,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 909 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 22:28:15,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-07-13 22:28:15,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2022-07-13 22:28:15,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 121 states have (on average 1.1570247933884297) internal successors, (140), 122 states have internal predecessors, (140), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (72), 71 states have call predecessors, (72), 70 states have call successors, (72) [2022-07-13 22:28:15,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 283 transitions. [2022-07-13 22:28:15,724 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 283 transitions. Word has length 195 [2022-07-13 22:28:15,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:28:15,724 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 283 transitions. [2022-07-13 22:28:15,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-13 22:28:15,725 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 283 transitions. [2022-07-13 22:28:15,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-07-13 22:28:15,726 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:28:15,726 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:28:15,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 22:28:15,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:15,944 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:28:15,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:28:15,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1712202978, now seen corresponding path program 1 times [2022-07-13 22:28:15,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:28:15,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163928050] [2022-07-13 22:28:15,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:15,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:28:16,022 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:28:16,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [585022214] [2022-07-13 22:28:16,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:16,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:16,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:28:16,024 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:28:16,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 22:28:16,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:16,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 2928 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 22:28:16,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:28:16,474 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2022-07-13 22:28:16,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:28:16,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:28:16,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163928050] [2022-07-13 22:28:16,475 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:28:16,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585022214] [2022-07-13 22:28:16,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585022214] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:28:16,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:28:16,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:28:16,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878235586] [2022-07-13 22:28:16,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:28:16,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:28:16,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:28:16,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:28:16,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:28:16,477 INFO L87 Difference]: Start difference. First operand 211 states and 283 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) [2022-07-13 22:28:16,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:28:16,505 INFO L93 Difference]: Finished difference Result 269 states and 354 transitions. [2022-07-13 22:28:16,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:28:16,505 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) Word has length 210 [2022-07-13 22:28:16,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:28:16,507 INFO L225 Difference]: With dead ends: 269 [2022-07-13 22:28:16,507 INFO L226 Difference]: Without dead ends: 220 [2022-07-13 22:28:16,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:28:16,508 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 3 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:28:16,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1363 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:28:16,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-07-13 22:28:16,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 213. [2022-07-13 22:28:16,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 123 states have (on average 1.1544715447154472) internal successors, (142), 124 states have internal predecessors, (142), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (72), 71 states have call predecessors, (72), 70 states have call successors, (72) [2022-07-13 22:28:16,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 285 transitions. [2022-07-13 22:28:16,518 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 285 transitions. Word has length 210 [2022-07-13 22:28:16,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:28:16,518 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 285 transitions. [2022-07-13 22:28:16,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) [2022-07-13 22:28:16,519 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 285 transitions. [2022-07-13 22:28:16,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-13 22:28:16,520 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:28:16,520 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:28:16,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 22:28:16,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:16,742 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:28:16,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:28:16,742 INFO L85 PathProgramCache]: Analyzing trace with hash 870357412, now seen corresponding path program 1 times [2022-07-13 22:28:16,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:28:16,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954290548] [2022-07-13 22:28:16,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:16,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:28:16,802 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:28:16,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1757395006] [2022-07-13 22:28:16,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:28:16,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:28:16,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:28:16,820 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:28:16,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 22:28:17,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:28:17,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 3056 conjuncts, 114 conjunts are in the unsatisfiable core [2022-07-13 22:28:17,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:28:17,741 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_996 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| v_ArrVal_996))) (exists ((v_ArrVal_995 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| v_ArrVal_995) |c_#memory_$Pointer$.base|))) is different from true [2022-07-13 22:28:17,782 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-13 22:28:17,782 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-07-13 22:28:17,789 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-13 22:28:17,804 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-13 22:28:17,804 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-07-13 22:28:17,810 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-13 22:28:19,910 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_999 Int) (v_ArrVal_998 Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_999))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_998))))) is different from true [2022-07-13 22:28:44,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:28:44,351 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-07-13 22:28:44,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:28:44,355 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-07-13 22:28:44,762 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-13 22:28:44,764 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-13 22:28:44,844 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 312 proven. 33 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-07-13 22:28:44,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:28:53,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:28:53,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954290548] [2022-07-13 22:28:53,423 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:28:53,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757395006] [2022-07-13 22:28:53,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757395006] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:28:53,424 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:28:53,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2022-07-13 22:28:53,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241290493] [2022-07-13 22:28:53,424 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 22:28:53,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-13 22:28:53,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:28:53,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-13 22:28:53,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1017, Unknown=13, NotChecked=130, Total=1260 [2022-07-13 22:28:53,425 INFO L87 Difference]: Start difference. First operand 213 states and 285 transitions. Second operand has 27 states, 24 states have (on average 3.8333333333333335) internal successors, (92), 25 states have internal predecessors, (92), 12 states have call successors, (32), 4 states have call predecessors, (32), 8 states have return successors, (31), 11 states have call predecessors, (31), 12 states have call successors, (31) [2022-07-13 22:29:13,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:29:13,078 INFO L93 Difference]: Finished difference Result 491 states and 714 transitions. [2022-07-13 22:29:13,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-13 22:29:13,078 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 3.8333333333333335) internal successors, (92), 25 states have internal predecessors, (92), 12 states have call successors, (32), 4 states have call predecessors, (32), 8 states have return successors, (31), 11 states have call predecessors, (31), 12 states have call successors, (31) Word has length 226 [2022-07-13 22:29:13,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:29:13,080 INFO L225 Difference]: With dead ends: 491 [2022-07-13 22:29:13,081 INFO L226 Difference]: Without dead ends: 311 [2022-07-13 22:29:13,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 302 SyntacticMatches, 16 SemanticMatches, 45 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 53.3s TimeCoverageRelationStatistics Valid=183, Invalid=1784, Unknown=21, NotChecked=174, Total=2162 [2022-07-13 22:29:13,082 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 133 mSDsluCounter, 2109 mSDsCounter, 0 mSdLazyCounter, 2369 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 2392 SdHoareTripleChecker+Invalid, 4666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2209 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:29:13,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 2392 Invalid, 4666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 2369 Invalid, 0 Unknown, 2209 Unchecked, 1.3s Time] [2022-07-13 22:29:13,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-07-13 22:29:13,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 239. [2022-07-13 22:29:13,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 139 states have (on average 1.1510791366906474) internal successors, (160), 142 states have internal predecessors, (160), 76 states have call successors, (76), 19 states have call predecessors, (76), 23 states have return successors, (109), 77 states have call predecessors, (109), 75 states have call successors, (109) [2022-07-13 22:29:13,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 345 transitions. [2022-07-13 22:29:13,104 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 345 transitions. Word has length 226 [2022-07-13 22:29:13,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:29:13,104 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 345 transitions. [2022-07-13 22:29:13,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 3.8333333333333335) internal successors, (92), 25 states have internal predecessors, (92), 12 states have call successors, (32), 4 states have call predecessors, (32), 8 states have return successors, (31), 11 states have call predecessors, (31), 12 states have call successors, (31) [2022-07-13 22:29:13,104 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 345 transitions. [2022-07-13 22:29:13,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-07-13 22:29:13,107 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:29:13,107 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:29:13,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-13 22:29:13,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-13 22:29:13,329 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:29:13,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:29:13,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1241589422, now seen corresponding path program 2 times [2022-07-13 22:29:13,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:29:13,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005100548] [2022-07-13 22:29:13,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:29:13,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:29:13,410 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:29:13,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1582798188] [2022-07-13 22:29:13,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:29:13,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:29:13,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:29:13,411 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:29:13,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-13 22:29:15,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 22:29:15,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:29:15,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 3060 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-13 22:29:15,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:29:15,392 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2022-07-13 22:29:15,393 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:29:15,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:29:15,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005100548] [2022-07-13 22:29:15,393 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:29:15,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582798188] [2022-07-13 22:29:15,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582798188] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:29:15,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:29:15,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-13 22:29:15,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614866070] [2022-07-13 22:29:15,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:29:15,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 22:29:15,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:29:15,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 22:29:15,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-13 22:29:15,398 INFO L87 Difference]: Start difference. First operand 239 states and 345 transitions. Second operand has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 9 states have internal predecessors, (82), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (29), 5 states have call predecessors, (29), 3 states have call successors, (29) [2022-07-13 22:29:15,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:29:15,624 INFO L93 Difference]: Finished difference Result 436 states and 638 transitions. [2022-07-13 22:29:15,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 22:29:15,625 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 9 states have internal predecessors, (82), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (29), 5 states have call predecessors, (29), 3 states have call successors, (29) Word has length 232 [2022-07-13 22:29:15,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:29:15,626 INFO L225 Difference]: With dead ends: 436 [2022-07-13 22:29:15,626 INFO L226 Difference]: Without dead ends: 246 [2022-07-13 22:29:15,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-07-13 22:29:15,627 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 11 mSDsluCounter, 2602 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2872 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 22:29:15,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2872 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 22:29:15,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-07-13 22:29:15,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2022-07-13 22:29:15,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 145 states have (on average 1.1517241379310346) internal successors, (167), 149 states have internal predecessors, (167), 76 states have call successors, (76), 19 states have call predecessors, (76), 24 states have return successors, (120), 77 states have call predecessors, (120), 75 states have call successors, (120) [2022-07-13 22:29:15,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 363 transitions. [2022-07-13 22:29:15,639 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 363 transitions. Word has length 232 [2022-07-13 22:29:15,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:29:15,639 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 363 transitions. [2022-07-13 22:29:15,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 9 states have internal predecessors, (82), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (29), 5 states have call predecessors, (29), 3 states have call successors, (29) [2022-07-13 22:29:15,640 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 363 transitions. [2022-07-13 22:29:15,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-07-13 22:29:15,641 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:29:15,642 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:29:15,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-13 22:29:15,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:29:15,848 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:29:15,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:29:15,848 INFO L85 PathProgramCache]: Analyzing trace with hash -905056813, now seen corresponding path program 1 times [2022-07-13 22:29:15,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:29:15,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119227278] [2022-07-13 22:29:15,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:29:15,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:29:15,896 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:29:15,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1329699563] [2022-07-13 22:29:15,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:29:15,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:29:15,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:29:15,898 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:29:15,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-13 22:29:16,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:29:16,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 3095 conjuncts, 50 conjunts are in the unsatisfiable core [2022-07-13 22:29:16,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:29:16,452 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 22:29:16,509 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-13 22:29:16,510 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 21 [2022-07-13 22:29:18,589 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1384 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1384)))) is different from true [2022-07-13 22:29:35,899 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2022-07-13 22:29:35,900 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:29:35,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:29:35,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119227278] [2022-07-13 22:29:35,901 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:29:35,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329699563] [2022-07-13 22:29:35,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329699563] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:29:35,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:29:35,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-13 22:29:35,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707365375] [2022-07-13 22:29:35,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:29:35,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-13 22:29:35,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:29:35,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-13 22:29:35,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=255, Unknown=7, NotChecked=32, Total=342 [2022-07-13 22:29:35,903 INFO L87 Difference]: Start difference. First operand 246 states and 363 transitions. Second operand has 19 states, 17 states have (on average 5.294117647058823) internal successors, (90), 16 states have internal predecessors, (90), 8 states have call successors, (33), 4 states have call predecessors, (33), 7 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2022-07-13 22:29:36,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:29:36,617 INFO L93 Difference]: Finished difference Result 454 states and 667 transitions. [2022-07-13 22:29:36,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 22:29:36,618 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 5.294117647058823) internal successors, (90), 16 states have internal predecessors, (90), 8 states have call successors, (33), 4 states have call predecessors, (33), 7 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) Word has length 232 [2022-07-13 22:29:36,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:29:36,620 INFO L225 Difference]: With dead ends: 454 [2022-07-13 22:29:36,620 INFO L226 Difference]: Without dead ends: 257 [2022-07-13 22:29:36,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 214 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 19.4s TimeCoverageRelationStatistics Valid=66, Invalid=393, Unknown=7, NotChecked=40, Total=506 [2022-07-13 22:29:36,621 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 102 mSDsluCounter, 1229 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 1464 SdHoareTripleChecker+Invalid, 2179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 956 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 22:29:36,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 1464 Invalid, 2179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1137 Invalid, 0 Unknown, 956 Unchecked, 0.6s Time] [2022-07-13 22:29:36,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-07-13 22:29:36,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 249. [2022-07-13 22:29:36,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 147 states have (on average 1.1496598639455782) internal successors, (169), 151 states have internal predecessors, (169), 76 states have call successors, (76), 20 states have call predecessors, (76), 25 states have return successors, (120), 77 states have call predecessors, (120), 75 states have call successors, (120) [2022-07-13 22:29:36,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 365 transitions. [2022-07-13 22:29:36,634 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 365 transitions. Word has length 232 [2022-07-13 22:29:36,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:29:36,634 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 365 transitions. [2022-07-13 22:29:36,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 5.294117647058823) internal successors, (90), 16 states have internal predecessors, (90), 8 states have call successors, (33), 4 states have call predecessors, (33), 7 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2022-07-13 22:29:36,635 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 365 transitions. [2022-07-13 22:29:36,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-13 22:29:36,636 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:29:36,636 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:29:36,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-13 22:29:36,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-13 22:29:36,855 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:29:36,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:29:36,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1304057108, now seen corresponding path program 1 times [2022-07-13 22:29:36,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:29:36,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597358888] [2022-07-13 22:29:36,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:29:36,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:29:36,935 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:29:36,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [279445566] [2022-07-13 22:29:36,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:29:36,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:29:36,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:29:36,936 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:29:36,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-13 22:29:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:29:37,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 3056 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 22:29:37,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:29:37,444 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2022-07-13 22:29:37,444 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:29:37,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:29:37,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597358888] [2022-07-13 22:29:37,445 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:29:37,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279445566] [2022-07-13 22:29:37,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279445566] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:29:37,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:29:37,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:29:37,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255265745] [2022-07-13 22:29:37,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:29:37,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:29:37,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:29:37,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:29:37,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:29:37,447 INFO L87 Difference]: Start difference. First operand 249 states and 365 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-13 22:29:37,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:29:37,606 INFO L93 Difference]: Finished difference Result 488 states and 765 transitions. [2022-07-13 22:29:37,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:29:37,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 228 [2022-07-13 22:29:37,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:29:37,608 INFO L225 Difference]: With dead ends: 488 [2022-07-13 22:29:37,608 INFO L226 Difference]: Without dead ends: 259 [2022-07-13 22:29:37,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:29:37,609 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 7 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:29:37,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1051 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:29:37,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-07-13 22:29:37,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 251. [2022-07-13 22:29:37,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 149 states have (on average 1.1476510067114094) internal successors, (171), 153 states have internal predecessors, (171), 76 states have call successors, (76), 20 states have call predecessors, (76), 25 states have return successors, (120), 77 states have call predecessors, (120), 75 states have call successors, (120) [2022-07-13 22:29:37,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 367 transitions. [2022-07-13 22:29:37,621 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 367 transitions. Word has length 228 [2022-07-13 22:29:37,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:29:37,621 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 367 transitions. [2022-07-13 22:29:37,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-13 22:29:37,622 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 367 transitions. [2022-07-13 22:29:37,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-07-13 22:29:37,624 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:29:37,624 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:29:37,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-13 22:29:37,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-13 22:29:37,839 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:29:37,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:29:37,839 INFO L85 PathProgramCache]: Analyzing trace with hash -308063992, now seen corresponding path program 1 times [2022-07-13 22:29:37,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:29:37,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514991488] [2022-07-13 22:29:37,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:29:37,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:29:37,882 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:29:37,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [623406615] [2022-07-13 22:29:37,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:29:37,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:29:37,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:29:37,884 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:29:37,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-13 22:29:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:29:38,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 3073 conjuncts, 58 conjunts are in the unsatisfiable core [2022-07-13 22:29:38,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:29:38,490 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 253 proven. 1 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2022-07-13 22:29:38,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:29:39,268 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 66 proven. 19 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-07-13 22:29:39,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:29:39,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514991488] [2022-07-13 22:29:39,269 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:29:39,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623406615] [2022-07-13 22:29:39,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623406615] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:29:39,269 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:29:39,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 21 [2022-07-13 22:29:39,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850468530] [2022-07-13 22:29:39,269 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:29:39,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-13 22:29:39,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:29:39,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-13 22:29:39,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2022-07-13 22:29:39,270 INFO L87 Difference]: Start difference. First operand 251 states and 367 transitions. Second operand has 21 states, 18 states have (on average 5.611111111111111) internal successors, (101), 14 states have internal predecessors, (101), 5 states have call successors, (35), 3 states have call predecessors, (35), 7 states have return successors, (37), 8 states have call predecessors, (37), 4 states have call successors, (37) [2022-07-13 22:29:39,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:29:39,646 INFO L93 Difference]: Finished difference Result 440 states and 641 transitions. [2022-07-13 22:29:39,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:29:39,647 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 5.611111111111111) internal successors, (101), 14 states have internal predecessors, (101), 5 states have call successors, (35), 3 states have call predecessors, (35), 7 states have return successors, (37), 8 states have call predecessors, (37), 4 states have call successors, (37) Word has length 246 [2022-07-13 22:29:39,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:29:39,648 INFO L225 Difference]: With dead ends: 440 [2022-07-13 22:29:39,648 INFO L226 Difference]: Without dead ends: 251 [2022-07-13 22:29:39,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 470 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2022-07-13 22:29:39,649 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 19 mSDsluCounter, 4453 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 4725 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:29:39,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 4725 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 22:29:39,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-07-13 22:29:39,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2022-07-13 22:29:39,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 149 states have (on average 1.1476510067114094) internal successors, (171), 153 states have internal predecessors, (171), 76 states have call successors, (76), 20 states have call predecessors, (76), 25 states have return successors, (116), 77 states have call predecessors, (116), 75 states have call successors, (116) [2022-07-13 22:29:39,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 363 transitions. [2022-07-13 22:29:39,659 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 363 transitions. Word has length 246 [2022-07-13 22:29:39,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:29:39,659 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 363 transitions. [2022-07-13 22:29:39,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 5.611111111111111) internal successors, (101), 14 states have internal predecessors, (101), 5 states have call successors, (35), 3 states have call predecessors, (35), 7 states have return successors, (37), 8 states have call predecessors, (37), 4 states have call successors, (37) [2022-07-13 22:29:39,659 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 363 transitions. [2022-07-13 22:29:39,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-07-13 22:29:39,660 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:29:39,660 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:29:39,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-13 22:29:39,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-13 22:29:39,875 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:29:39,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:29:39,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1371917836, now seen corresponding path program 2 times [2022-07-13 22:29:39,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:29:39,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10725216] [2022-07-13 22:29:39,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:29:39,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:29:39,917 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:29:39,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1345177969] [2022-07-13 22:29:39,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:29:39,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:29:39,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:29:39,926 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:29:39,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-13 22:29:40,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 22:29:40,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:29:40,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 3065 conjuncts, 52 conjunts are in the unsatisfiable core [2022-07-13 22:29:40,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:29:40,729 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-13 22:29:40,730 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2022-07-13 22:29:40,927 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-13 22:29:40,928 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-07-13 22:29:41,066 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1865 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1865) |c_#memory_int|)) is different from true [2022-07-13 22:29:41,242 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 180 proven. 4 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2022-07-13 22:29:41,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:29:41,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:29:41,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10725216] [2022-07-13 22:29:41,479 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:29:41,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345177969] [2022-07-13 22:29:41,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345177969] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:29:41,479 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:29:41,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2022-07-13 22:29:41,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622741126] [2022-07-13 22:29:41,479 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-13 22:29:41,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-13 22:29:41,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:29:41,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-13 22:29:41,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=4, NotChecked=34, Total=380 [2022-07-13 22:29:41,480 INFO L87 Difference]: Start difference. First operand 251 states and 363 transitions. Second operand has 19 states, 17 states have (on average 4.764705882352941) internal successors, (81), 14 states have internal predecessors, (81), 6 states have call successors, (30), 7 states have call predecessors, (30), 7 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) [2022-07-13 22:29:42,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:29:42,273 INFO L93 Difference]: Finished difference Result 521 states and 754 transitions. [2022-07-13 22:29:42,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 22:29:42,274 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.764705882352941) internal successors, (81), 14 states have internal predecessors, (81), 6 states have call successors, (30), 7 states have call predecessors, (30), 7 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) Word has length 234 [2022-07-13 22:29:42,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:29:42,275 INFO L225 Difference]: With dead ends: 521 [2022-07-13 22:29:42,275 INFO L226 Difference]: Without dead ends: 290 [2022-07-13 22:29:42,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 395 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=498, Unknown=15, NotChecked=46, Total=650 [2022-07-13 22:29:42,277 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 222 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 2664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1381 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 22:29:42,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 919 Invalid, 2664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 993 Invalid, 0 Unknown, 1381 Unchecked, 0.6s Time] [2022-07-13 22:29:42,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-07-13 22:29:42,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 270. [2022-07-13 22:29:42,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 162 states have (on average 1.1358024691358024) internal successors, (184), 167 states have internal predecessors, (184), 77 states have call successors, (77), 24 states have call predecessors, (77), 30 states have return successors, (135), 78 states have call predecessors, (135), 76 states have call successors, (135) [2022-07-13 22:29:42,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 396 transitions. [2022-07-13 22:29:42,289 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 396 transitions. Word has length 234 [2022-07-13 22:29:42,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:29:42,289 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 396 transitions. [2022-07-13 22:29:42,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.764705882352941) internal successors, (81), 14 states have internal predecessors, (81), 6 states have call successors, (30), 7 states have call predecessors, (30), 7 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) [2022-07-13 22:29:42,289 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 396 transitions. [2022-07-13 22:29:42,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-13 22:29:42,290 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:29:42,291 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:29:42,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-07-13 22:29:42,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-13 22:29:42,491 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:29:42,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:29:42,492 INFO L85 PathProgramCache]: Analyzing trace with hash -561819810, now seen corresponding path program 3 times [2022-07-13 22:29:42,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:29:42,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418068140] [2022-07-13 22:29:42,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:29:42,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:29:42,536 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:29:42,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [801216572] [2022-07-13 22:29:42,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 22:29:42,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:29:42,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:29:42,552 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:29:42,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process