./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 ae007674 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-dev-ae00767 [2021-12-28 03:12:24,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:12:24,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:12:24,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:12:24,482 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:12:24,483 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:12:24,486 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:12:24,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:12:24,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:12:24,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:12:24,496 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:12:24,497 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:12:24,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:12:24,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:12:24,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:12:24,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:12:24,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:12:24,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:12:24,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:12:24,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:12:24,513 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:12:24,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:12:24,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:12:24,516 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:12:24,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:12:24,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:12:24,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:12:24,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:12:24,524 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:12:24,525 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:12:24,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:12:24,526 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:12:24,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:12:24,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:12:24,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:12:24,529 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:12:24,529 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:12:24,529 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:12:24,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:12:24,531 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:12:24,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:12:24,532 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:12:24,558 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:12:24,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:12:24,559 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:12:24,559 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:12:24,559 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:12:24,560 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:12:24,560 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:12:24,561 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:12:24,561 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:12:24,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:12:24,562 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:12:24,562 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:12:24,562 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:12:24,562 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:12:24,562 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:12:24,562 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:12:24,563 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:12:24,563 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:12:24,563 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:12:24,563 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:12:24,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:12:24,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:12:24,564 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:12:24,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:12:24,564 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:12:24,564 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:12:24,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:12:24,571 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:12:24,571 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:12:24,571 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:12:24,571 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a98a47bac7562a35bba31573ebdfd704a9d27baca1b439deea796ac12a0961b [2021-12-28 03:12:24,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:12:24,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:12:24,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:12:24,867 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:12:24,867 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:12:24,869 INFO L432 ainManager$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 [2021-12-28 03:12:24,921 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e8f39c37/3a6edc497939482c830b665e72e5a6d2/FLAG30c567924 [2021-12-28 03:12:25,498 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:12:25,499 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness.i [2021-12-28 03:12:25,520 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e8f39c37/3a6edc497939482c830b665e72e5a6d2/FLAG30c567924 [2021-12-28 03:12:25,943 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e8f39c37/3a6edc497939482c830b665e72e5a6d2 [2021-12-28 03:12:25,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:12:25,945 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:12:25,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:12:25,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:12:25,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:12:25,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:12:25" (1/1) ... [2021-12-28 03:12:25,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60dfbd8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:12:25, skipping insertion in model container [2021-12-28 03:12:25,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:12:25" (1/1) ... [2021-12-28 03:12:25,956 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:12:26,047 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:12:26,242 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] [2021-12-28 03:12:26,247 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] [2021-12-28 03:12:26,820 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:12:26,892 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:26,893 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:26,893 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:26,895 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:26,896 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:26,908 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:26,909 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:26,910 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:26,910 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:26,911 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:26,912 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:26,912 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:26,913 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:27,161 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:12:27,162 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:12:27,163 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:12:27,165 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:12:27,165 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:12:27,166 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:12:27,166 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:12:27,167 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:12:27,167 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:12:27,168 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:12:27,270 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:27,271 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:27,274 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:27,280 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:27,323 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:12:27,347 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:12:27,354 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] [2021-12-28 03:12:27,355 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] [2021-12-28 03:12:27,379 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:12:27,409 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:27,410 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:27,410 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:27,410 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:27,410 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:27,413 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:27,414 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:27,414 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:27,414 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:27,415 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:27,415 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:27,415 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:27,415 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:27,442 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:12:27,443 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:12:27,443 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:12:27,444 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:12:27,444 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:12:27,445 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:12:27,445 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:12:27,445 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:12:27,446 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:12:27,446 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:12:27,465 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:27,475 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:27,476 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:27,479 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:12:27,501 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:12:27,645 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:12:27,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:12:27 WrapperNode [2021-12-28 03:12:27,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:12:27,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:12:27,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:12:27,646 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:12:27,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:12:27" (1/1) ... [2021-12-28 03:12:27,726 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:12:27" (1/1) ... [2021-12-28 03:12:27,791 INFO L137 Inliner]: procedures = 691, calls = 1673, calls flagged for inlining = 52, calls inlined = 7, statements flattened = 695 [2021-12-28 03:12:27,796 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:12:27,797 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:12:27,797 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:12:27,797 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:12:27,803 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:12:27" (1/1) ... [2021-12-28 03:12:27,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:12:27" (1/1) ... [2021-12-28 03:12:27,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:12:27" (1/1) ... [2021-12-28 03:12:27,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:12:27" (1/1) ... [2021-12-28 03:12:27,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:12:27" (1/1) ... [2021-12-28 03:12:27,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:12:27" (1/1) ... [2021-12-28 03:12:27,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:12:27" (1/1) ... [2021-12-28 03:12:27,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:12:27,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:12:27,888 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:12:27,888 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:12:27,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:12:27" (1/1) ... [2021-12-28 03:12:27,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:12:27,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:12:27,913 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 03:12:27,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-28 03:12:27,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:12:27,940 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-12-28 03:12:27,941 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-12-28 03:12:27,941 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-28 03:12:27,941 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-28 03:12:27,941 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-28 03:12:27,941 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-28 03:12:27,941 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-12-28 03:12:27,941 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-12-28 03:12:27,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:12:27,942 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-28 03:12:27,942 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-28 03:12:27,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-28 03:12:27,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-28 03:12:27,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:12:27,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:12:27,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:12:27,942 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-12-28 03:12:27,943 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-12-28 03:12:27,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:12:27,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:12:27,943 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-28 03:12:27,943 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-28 03:12:27,943 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-28 03:12:27,943 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-28 03:12:27,943 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-12-28 03:12:27,943 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-12-28 03:12:27,944 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2021-12-28 03:12:27,944 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2021-12-28 03:12:27,944 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 03:12:27,944 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 03:12:27,944 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-12-28 03:12:27,944 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-12-28 03:12:27,944 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2021-12-28 03:12:27,944 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2021-12-28 03:12:27,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:12:27,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:12:27,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:12:27,945 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-28 03:12:27,945 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-28 03:12:27,945 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-28 03:12:27,945 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-28 03:12:27,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:12:27,945 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-12-28 03:12:27,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-12-28 03:12:27,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:12:28,227 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:12:28,228 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:12:28,839 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:12:28,845 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:12:28,845 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 03:12:28,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:12:28 BoogieIcfgContainer [2021-12-28 03:12:28,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:12:28,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:12:28,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:12:28,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:12:28,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:12:25" (1/3) ... [2021-12-28 03:12:28,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e04d7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:12:28, skipping insertion in model container [2021-12-28 03:12:28,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:12:27" (2/3) ... [2021-12-28 03:12:28,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e04d7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:12:28, skipping insertion in model container [2021-12-28 03:12:28,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:12:28" (3/3) ... [2021-12-28 03:12:28,852 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_copy_harness.i [2021-12-28 03:12:28,855 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:12:28,855 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:12:28,883 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:12:28,886 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 03:12:28,887 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:12:28,899 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) [2021-12-28 03:12:28,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-28 03:12:28,907 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:12:28,908 INFO L514 BasicCegarLoop]: 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] [2021-12-28 03:12:28,908 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:12:28,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:12:28,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1428143905, now seen corresponding path program 1 times [2021-12-28 03:12:28,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:12:28,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26784834] [2021-12-28 03:12:28,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:12:28,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:12:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:29,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:12:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:29,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:12:29,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:29,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:12:29,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:29,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:12:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:29,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 03:12:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:29,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-28 03:12:29,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:29,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 03:12:29,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:29,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 03:12:29,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:29,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-28 03:12:29,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:29,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 03:12:29,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:29,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:12:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:29,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 03:12:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:29,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 03:12:29,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:29,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 03:12:29,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:29,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 03:12:29,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:29,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-28 03:12:29,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:29,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 03:12:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:29,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 03:12:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:29,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 03:12:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:29,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-28 03:12:29,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:29,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-28 03:12:29,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:29,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-28 03:12:29,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:29,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-28 03:12:29,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:12:29,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26784834] [2021-12-28 03:12:29,669 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-28 03:12:29,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271209859] [2021-12-28 03:12:29,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:12:29,670 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:12:29,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:12:29,672 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:12:29,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 03:12:30,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:30,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 2347 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-28 03:12:30,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:12:30,357 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2021-12-28 03:12:30,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:12:30,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271209859] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:12:30,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:12:30,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:12:30,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495909082] [2021-12-28 03:12:30,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:12:30,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:12:30,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:12:30,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:12:30,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-28 03:12:30,387 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) [2021-12-28 03:12:30,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:12:30,707 INFO L93 Difference]: Finished difference Result 416 states and 618 transitions. [2021-12-28 03:12:30,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:12:30,709 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 [2021-12-28 03:12:30,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:12:30,717 INFO L225 Difference]: With dead ends: 416 [2021-12-28 03:12:30,717 INFO L226 Difference]: Without dead ends: 206 [2021-12-28 03:12:30,720 INFO L932 BasicCegarLoop]: 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 [2021-12-28 03:12:30,722 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 276 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:12:30,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 786 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 03:12:30,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-12-28 03:12:30,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2021-12-28 03:12:30,760 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) [2021-12-28 03:12:30,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 289 transitions. [2021-12-28 03:12:30,763 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 289 transitions. Word has length 145 [2021-12-28 03:12:30,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:12:30,763 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 289 transitions. [2021-12-28 03:12:30,764 INFO L471 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) [2021-12-28 03:12:30,764 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 289 transitions. [2021-12-28 03:12:30,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-28 03:12:30,766 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:12:30,767 INFO L514 BasicCegarLoop]: 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] [2021-12-28 03:12:30,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-28 03:12:30,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-28 03:12:30,984 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:12:30,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:12:30,984 INFO L85 PathProgramCache]: Analyzing trace with hash 484121766, now seen corresponding path program 1 times [2021-12-28 03:12:30,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:12:30,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097868553] [2021-12-28 03:12:30,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:12:30,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:12:31,038 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:12:31,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1817399211] [2021-12-28 03:12:31,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:12:31,039 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:12:31,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:12:31,040 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:12:31,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 03:12:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:31,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 2483 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 03:12:31,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:12:31,649 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2021-12-28 03:12:31,650 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:12:31,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:12:31,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097868553] [2021-12-28 03:12:31,650 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:12:31,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817399211] [2021-12-28 03:12:31,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817399211] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:12:31,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:12:31,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:12:31,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563827849] [2021-12-28 03:12:31,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:12:31,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:12:31,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:12:31,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:12:31,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:12:31,653 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) [2021-12-28 03:12:31,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:12:31,695 INFO L93 Difference]: Finished difference Result 410 states and 588 transitions. [2021-12-28 03:12:31,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:12:31,695 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 [2021-12-28 03:12:31,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:12:31,698 INFO L225 Difference]: With dead ends: 410 [2021-12-28 03:12:31,698 INFO L226 Difference]: Without dead ends: 211 [2021-12-28 03:12:31,699 INFO L932 BasicCegarLoop]: 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 [2021-12-28 03:12:31,699 INFO L933 BasicCegarLoop]: 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 [2021-12-28 03:12:31,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 815 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:12:31,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-12-28 03:12:31,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 208. [2021-12-28 03:12:31,714 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) [2021-12-28 03:12:31,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 291 transitions. [2021-12-28 03:12:31,716 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 291 transitions. Word has length 160 [2021-12-28 03:12:31,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:12:31,716 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 291 transitions. [2021-12-28 03:12:31,716 INFO L471 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) [2021-12-28 03:12:31,716 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 291 transitions. [2021-12-28 03:12:31,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-28 03:12:31,718 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:12:31,718 INFO L514 BasicCegarLoop]: 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] [2021-12-28 03:12:31,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 03:12:31,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-12-28 03:12:31,935 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:12:31,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:12:31,935 INFO L85 PathProgramCache]: Analyzing trace with hash -2088842844, now seen corresponding path program 1 times [2021-12-28 03:12:31,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:12:31,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279197420] [2021-12-28 03:12:31,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:12:31,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:12:31,992 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:12:31,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [625949125] [2021-12-28 03:12:31,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:12:31,995 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:12:31,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:12:31,996 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:12:31,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 03:12:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:32,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 2488 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-28 03:12:32,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:12:32,625 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-28 03:12:32,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:12:32,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:12:32,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279197420] [2021-12-28 03:12:32,625 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:12:32,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625949125] [2021-12-28 03:12:32,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625949125] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:12:32,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:12:32,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:12:32,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945591540] [2021-12-28 03:12:32,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:12:32,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:12:32,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:12:32,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:12:32,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:12:32,627 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) [2021-12-28 03:12:32,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:12:32,922 INFO L93 Difference]: Finished difference Result 383 states and 533 transitions. [2021-12-28 03:12:32,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:12:32,923 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 [2021-12-28 03:12:32,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:12:32,925 INFO L225 Difference]: With dead ends: 383 [2021-12-28 03:12:32,925 INFO L226 Difference]: Without dead ends: 208 [2021-12-28 03:12:32,925 INFO L932 BasicCegarLoop]: 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 [2021-12-28 03:12:32,926 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 270 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 03:12:32,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 777 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 03:12:32,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-12-28 03:12:32,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2021-12-28 03:12:32,953 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) [2021-12-28 03:12:32,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 289 transitions. [2021-12-28 03:12:32,955 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 289 transitions. Word has length 160 [2021-12-28 03:12:32,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:12:32,957 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 289 transitions. [2021-12-28 03:12:32,957 INFO L471 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) [2021-12-28 03:12:32,957 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 289 transitions. [2021-12-28 03:12:32,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-28 03:12:32,958 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:12:32,959 INFO L514 BasicCegarLoop]: 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] [2021-12-28 03:12:32,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-28 03:12:33,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:12:33,159 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:12:33,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:12:33,160 INFO L85 PathProgramCache]: Analyzing trace with hash 2066938953, now seen corresponding path program 2 times [2021-12-28 03:12:33,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:12:33,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462871836] [2021-12-28 03:12:33,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:12:33,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:12:33,206 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:12:33,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [730052707] [2021-12-28 03:12:33,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:12:33,207 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:12:33,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:12:33,208 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:12:33,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 03:12:33,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-28 03:12:33,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:12:33,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 1926 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-28 03:12:33,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:12:33,719 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2021-12-28 03:12:33,719 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:12:33,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:12:33,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462871836] [2021-12-28 03:12:33,719 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:12:33,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730052707] [2021-12-28 03:12:33,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730052707] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:12:33,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:12:33,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:12:33,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204468030] [2021-12-28 03:12:33,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:12:33,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:12:33,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:12:33,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:12:33,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:12:33,723 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) [2021-12-28 03:12:33,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:12:33,750 INFO L93 Difference]: Finished difference Result 269 states and 367 transitions. [2021-12-28 03:12:33,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:12:33,751 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 [2021-12-28 03:12:33,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:12:33,752 INFO L225 Difference]: With dead ends: 269 [2021-12-28 03:12:33,752 INFO L226 Difference]: Without dead ends: 213 [2021-12-28 03:12:33,753 INFO L932 BasicCegarLoop]: 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 [2021-12-28 03:12:33,753 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 2 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:12:33,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1087 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:12:33,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-12-28 03:12:33,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2021-12-28 03:12:33,765 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) [2021-12-28 03:12:33,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 295 transitions. [2021-12-28 03:12:33,767 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 295 transitions. Word has length 175 [2021-12-28 03:12:33,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:12:33,768 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 295 transitions. [2021-12-28 03:12:33,768 INFO L471 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) [2021-12-28 03:12:33,768 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 295 transitions. [2021-12-28 03:12:33,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-12-28 03:12:33,769 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:12:33,769 INFO L514 BasicCegarLoop]: 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] [2021-12-28 03:12:33,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-28 03:12:33,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:12:33,989 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:12:33,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:12:33,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1798085459, now seen corresponding path program 1 times [2021-12-28 03:12:33,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:12:33,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754406438] [2021-12-28 03:12:33,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:12:33,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:12:34,037 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:12:34,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1342256617] [2021-12-28 03:12:34,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:12:34,038 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:12:34,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:12:34,039 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:12:34,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-28 03:12:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:34,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 2633 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-28 03:12:34,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:12:34,674 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2021-12-28 03:12:34,674 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:12:34,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:12:34,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754406438] [2021-12-28 03:12:34,675 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:12:34,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342256617] [2021-12-28 03:12:34,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342256617] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:12:34,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:12:34,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 03:12:34,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405505502] [2021-12-28 03:12:34,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:12:34,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:12:34,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:12:34,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:12:34,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:12:34,677 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) [2021-12-28 03:12:34,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:12:34,940 INFO L93 Difference]: Finished difference Result 382 states and 524 transitions. [2021-12-28 03:12:34,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:12:34,940 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 [2021-12-28 03:12:34,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:12:34,942 INFO L225 Difference]: With dead ends: 382 [2021-12-28 03:12:34,942 INFO L226 Difference]: Without dead ends: 213 [2021-12-28 03:12:34,943 INFO L932 BasicCegarLoop]: 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 [2021-12-28 03:12:34,943 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 305 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:12:34,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 936 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 03:12:34,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-12-28 03:12:34,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2021-12-28 03:12:34,968 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) [2021-12-28 03:12:34,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 290 transitions. [2021-12-28 03:12:34,970 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 290 transitions. Word has length 181 [2021-12-28 03:12:34,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:12:34,972 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 290 transitions. [2021-12-28 03:12:34,972 INFO L471 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) [2021-12-28 03:12:34,972 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 290 transitions. [2021-12-28 03:12:34,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-12-28 03:12:34,974 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:12:34,974 INFO L514 BasicCegarLoop]: 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] [2021-12-28 03:12:34,997 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-28 03:12:35,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:12:35,187 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:12:35,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:12:35,188 INFO L85 PathProgramCache]: Analyzing trace with hash -71678011, now seen corresponding path program 1 times [2021-12-28 03:12:35,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:12:35,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179432488] [2021-12-28 03:12:35,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:12:35,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:12:35,253 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:12:35,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1556265675] [2021-12-28 03:12:35,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:12:35,253 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:12:35,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:12:35,254 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:12:35,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-28 03:12:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:35,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 2787 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-28 03:12:35,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:12:35,915 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2021-12-28 03:12:35,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:12:35,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:12:35,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179432488] [2021-12-28 03:12:35,916 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:12:35,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556265675] [2021-12-28 03:12:35,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556265675] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:12:35,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:12:35,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 03:12:35,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625377085] [2021-12-28 03:12:35,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:12:35,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:12:35,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:12:35,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:12:35,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:12:35,918 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) [2021-12-28 03:12:36,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:12:36,182 INFO L93 Difference]: Finished difference Result 379 states and 509 transitions. [2021-12-28 03:12:36,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:12:36,182 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 [2021-12-28 03:12:36,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:12:36,184 INFO L225 Difference]: With dead ends: 379 [2021-12-28 03:12:36,184 INFO L226 Difference]: Without dead ends: 211 [2021-12-28 03:12:36,185 INFO L932 BasicCegarLoop]: 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 [2021-12-28 03:12:36,185 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 304 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:12:36,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 931 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 03:12:36,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-12-28 03:12:36,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2021-12-28 03:12:36,195 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) [2021-12-28 03:12:36,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 283 transitions. [2021-12-28 03:12:36,197 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 283 transitions. Word has length 195 [2021-12-28 03:12:36,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:12:36,197 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 283 transitions. [2021-12-28 03:12:36,198 INFO L471 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) [2021-12-28 03:12:36,198 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 283 transitions. [2021-12-28 03:12:36,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-12-28 03:12:36,199 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:12:36,199 INFO L514 BasicCegarLoop]: 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] [2021-12-28 03:12:36,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-28 03:12:36,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:12:36,412 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:12:36,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:12:36,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1712202978, now seen corresponding path program 1 times [2021-12-28 03:12:36,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:12:36,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760595770] [2021-12-28 03:12:36,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:12:36,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:12:36,472 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:12:36,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [507544892] [2021-12-28 03:12:36,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:12:36,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:12:36,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:12:36,474 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) [2021-12-28 03:12:36,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-28 03:12:36,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:36,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 2928 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-28 03:12:36,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:12:37,145 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2021-12-28 03:12:37,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:12:37,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:12:37,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760595770] [2021-12-28 03:12:37,146 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:12:37,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507544892] [2021-12-28 03:12:37,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507544892] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:12:37,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:12:37,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:12:37,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936566620] [2021-12-28 03:12:37,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:12:37,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:12:37,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:12:37,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:12:37,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:12:37,147 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) [2021-12-28 03:12:37,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:12:37,195 INFO L93 Difference]: Finished difference Result 269 states and 354 transitions. [2021-12-28 03:12:37,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:12:37,195 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 [2021-12-28 03:12:37,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:12:37,198 INFO L225 Difference]: With dead ends: 269 [2021-12-28 03:12:37,198 INFO L226 Difference]: Without dead ends: 220 [2021-12-28 03:12:37,199 INFO L932 BasicCegarLoop]: 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 [2021-12-28 03:12:37,200 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 3 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1366 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:12:37,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1366 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:12:37,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-12-28 03:12:37,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 213. [2021-12-28 03:12:37,212 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) [2021-12-28 03:12:37,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 285 transitions. [2021-12-28 03:12:37,214 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 285 transitions. Word has length 210 [2021-12-28 03:12:37,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:12:37,215 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 285 transitions. [2021-12-28 03:12:37,215 INFO L471 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) [2021-12-28 03:12:37,215 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 285 transitions. [2021-12-28 03:12:37,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-12-28 03:12:37,217 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:12:37,217 INFO L514 BasicCegarLoop]: 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] [2021-12-28 03:12:37,238 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-28 03:12:37,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:12:37,431 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:12:37,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:12:37,432 INFO L85 PathProgramCache]: Analyzing trace with hash 870357412, now seen corresponding path program 1 times [2021-12-28 03:12:37,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:12:37,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261250095] [2021-12-28 03:12:37,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:12:37,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:12:37,476 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:12:37,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1811982302] [2021-12-28 03:12:37,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:12:37,477 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:12:37,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:12:37,478 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) [2021-12-28 03:12:37,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-28 03:12:37,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:12:37,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 3056 conjuncts, 114 conjunts are in the unsatisfiable core [2021-12-28 03:12:37,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:12:38,492 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_996 (Array Int Int))) (= |c_#memory_$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 [2021-12-28 03:12:38,541 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-28 03:12:38,542 INFO L387 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 [2021-12-28 03:12:38,548 INFO L387 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 [2021-12-28 03:12:38,563 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-28 03:12:38,563 INFO L387 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 [2021-12-28 03:12:38,569 INFO L387 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 [2021-12-28 03:12:40,757 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_999 Int) (v_ArrVal_998 Int)) (and (= |c_#memory_$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 [2021-12-28 03:13:05,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:13:05,508 INFO L387 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 [2021-12-28 03:13:05,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:13:05,512 INFO L387 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 [2021-12-28 03:13:06,001 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-28 03:13:06,004 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-28 03:13:06,201 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 312 proven. 33 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-12-28 03:13:06,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:13:12,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:13:12,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261250095] [2021-12-28 03:13:12,964 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:13:12,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811982302] [2021-12-28 03:13:12,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811982302] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:13:12,964 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:13:12,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2021-12-28 03:13:12,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701074739] [2021-12-28 03:13:12,964 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-28 03:13:12,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-28 03:13:12,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:13:12,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-28 03:13:12,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1017, Unknown=13, NotChecked=130, Total=1260 [2021-12-28 03:13:12,965 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) [2021-12-28 03:13:32,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:13:32,416 INFO L93 Difference]: Finished difference Result 446 states and 625 transitions. [2021-12-28 03:13:32,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-28 03:13:32,417 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 [2021-12-28 03:13:32,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:13:32,419 INFO L225 Difference]: With dead ends: 446 [2021-12-28 03:13:32,419 INFO L226 Difference]: Without dead ends: 266 [2021-12-28 03:13:32,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 302 SyntacticMatches, 16 SemanticMatches, 45 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 51.5s TimeCoverageRelationStatistics Valid=183, Invalid=1784, Unknown=21, NotChecked=174, Total=2162 [2021-12-28 03:13:32,420 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 103 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 1992 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1960 SdHoareTripleChecker+Invalid, 3960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1885 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:13:32,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 1960 Invalid, 3960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1992 Invalid, 0 Unknown, 1885 Unchecked, 1.1s Time] [2021-12-28 03:13:32,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-12-28 03:13:32,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 239. [2021-12-28 03:13:32,439 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) [2021-12-28 03:13:32,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 345 transitions. [2021-12-28 03:13:32,440 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 345 transitions. Word has length 226 [2021-12-28 03:13:32,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:13:32,443 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 345 transitions. [2021-12-28 03:13:32,443 INFO L471 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) [2021-12-28 03:13:32,443 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 345 transitions. [2021-12-28 03:13:32,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-12-28 03:13:32,448 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:13:32,450 INFO L514 BasicCegarLoop]: 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] [2021-12-28 03:13:32,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-28 03:13:32,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-28 03:13:32,673 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:13:32,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:13:32,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1241589422, now seen corresponding path program 2 times [2021-12-28 03:13:32,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:13:32,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361431339] [2021-12-28 03:13:32,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:13:32,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:13:32,723 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:13:32,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1125794339] [2021-12-28 03:13:32,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:13:32,724 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:13:32,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:13:32,725 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) [2021-12-28 03:13:32,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-28 03:13:34,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 03:13:34,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:13:34,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 3060 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-28 03:13:34,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:13:34,887 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2021-12-28 03:13:34,887 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:13:34,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:13:34,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361431339] [2021-12-28 03:13:34,887 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:13:34,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125794339] [2021-12-28 03:13:34,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125794339] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:13:34,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:13:34,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-28 03:13:34,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113807886] [2021-12-28 03:13:34,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:13:34,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 03:13:34,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:13:34,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 03:13:34,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-28 03:13:34,889 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) [2021-12-28 03:13:35,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:13:35,090 INFO L93 Difference]: Finished difference Result 436 states and 638 transitions. [2021-12-28 03:13:35,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-28 03:13:35,091 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 [2021-12-28 03:13:35,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:13:35,092 INFO L225 Difference]: With dead ends: 436 [2021-12-28 03:13:35,092 INFO L226 Difference]: Without dead ends: 246 [2021-12-28 03:13:35,093 INFO L932 BasicCegarLoop]: 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 [2021-12-28 03:13:35,093 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 11 mSDsluCounter, 2676 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2951 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:13:35,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 2951 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 03:13:35,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-12-28 03:13:35,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2021-12-28 03:13:35,106 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) [2021-12-28 03:13:35,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 363 transitions. [2021-12-28 03:13:35,108 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 363 transitions. Word has length 232 [2021-12-28 03:13:35,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:13:35,109 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 363 transitions. [2021-12-28 03:13:35,109 INFO L471 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) [2021-12-28 03:13:35,109 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 363 transitions. [2021-12-28 03:13:35,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-12-28 03:13:35,111 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:13:35,111 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:13:35,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-28 03:13:35,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:13:35,327 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:13:35,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:13:35,328 INFO L85 PathProgramCache]: Analyzing trace with hash 413253233, now seen corresponding path program 1 times [2021-12-28 03:13:35,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:13:35,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836248291] [2021-12-28 03:13:35,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:13:35,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:13:35,381 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:13:35,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1092986716] [2021-12-28 03:13:35,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:13:35,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:13:35,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:13:35,383 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) [2021-12-28 03:13:35,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-28 03:13:35,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:13:35,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 3107 conjuncts, 43 conjunts are in the unsatisfiable core [2021-12-28 03:13:35,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:13:35,945 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-12-28 03:13:36,280 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 263 proven. 17 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2021-12-28 03:13:36,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:13:37,091 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 50 proven. 35 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2021-12-28 03:13:37,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:13:37,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836248291] [2021-12-28 03:13:37,091 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:13:37,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092986716] [2021-12-28 03:13:37,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092986716] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:13:37,095 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:13:37,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 26 [2021-12-28 03:13:37,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124067279] [2021-12-28 03:13:37,096 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 03:13:37,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-28 03:13:37,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:13:37,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-28 03:13:37,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=595, Unknown=0, NotChecked=0, Total=650 [2021-12-28 03:13:37,098 INFO L87 Difference]: Start difference. First operand 246 states and 363 transitions. Second operand has 26 states, 21 states have (on average 5.285714285714286) internal successors, (111), 19 states have internal predecessors, (111), 7 states have call successors, (40), 3 states have call predecessors, (40), 8 states have return successors, (42), 9 states have call predecessors, (42), 6 states have call successors, (42)