./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f 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_back_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 43b2ef256b4d1a93a084f86d3d9a0522c1b29c695f7bf9f8438f4c917cc80da0 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 08:16:09,456 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:16:09,484 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:16:09,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:16:09,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:16:09,514 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:16:09,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:16:09,518 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:16:09,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:16:09,523 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:16:09,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:16:09,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:16:09,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:16:09,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:16:09,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:16:09,527 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:16:09,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:16:09,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:16:09,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:16:09,530 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:16:09,531 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:16:09,532 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:16:09,533 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:16:09,533 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:16:09,534 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:16:09,535 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:16:09,535 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:16:09,535 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:16:09,536 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:16:09,536 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:16:09,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:16:09,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:16:09,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:16:09,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:16:09,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:16:09,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:16:09,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:16:09,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:16:09,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:16:09,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:16:09,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:16:09,543 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 08:16:09,567 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:16:09,568 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:16:09,568 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:16:09,568 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:16:09,569 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:16:09,569 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:16:09,570 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:16:09,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:16:09,570 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:16:09,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:16:09,571 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:16:09,571 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:16:09,571 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:16:09,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:16:09,571 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:16:09,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:16:09,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:16:09,572 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:16:09,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:16:09,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:16:09,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:16:09,572 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:16:09,572 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:16:09,572 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:16:09,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:16:09,573 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 08:16:09,573 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 08:16:09,573 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:16:09,573 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:16:09,573 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43b2ef256b4d1a93a084f86d3d9a0522c1b29c695f7bf9f8438f4c917cc80da0 [2021-11-07 08:16:09,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:16:09,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:16:09,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:16:09,806 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:16:09,806 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:16:09,807 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i [2021-11-07 08:16:09,860 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/641afd623/1dcb5851148541ccbca0470c5051a461/FLAG8e8999c18 [2021-11-07 08:16:10,410 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:16:10,411 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i [2021-11-07 08:16:10,437 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/641afd623/1dcb5851148541ccbca0470c5051a461/FLAG8e8999c18 [2021-11-07 08:16:10,625 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/641afd623/1dcb5851148541ccbca0470c5051a461 [2021-11-07 08:16:10,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:16:10,629 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:16:10,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:16:10,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:16:10,634 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:16:10,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:16:10" (1/1) ... [2021-11-07 08:16:10,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7001f7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:16:10, skipping insertion in model container [2021-11-07 08:16:10,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:16:10" (1/1) ... [2021-11-07 08:16:10,640 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:16:10,711 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:16:10,889 WARN L228 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_back_harness.i[4493,4506] [2021-11-07 08:16:10,893 WARN L228 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_back_harness.i[4553,4566] [2021-11-07 08:16:10,906 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 08:16:10,911 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 08:16:11,447 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 08:16:11,513 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:16:11,514 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:16:11,514 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:16:11,515 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:16:11,517 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:16:11,529 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:16:11,530 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:16:11,532 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:16:11,532 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:16:11,533 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:16:11,533 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:16:11,534 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:16:11,534 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:16:11,732 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 08:16:11,732 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 08:16:11,733 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 08:16:11,734 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 08:16:11,734 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 08:16:11,736 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 08:16:11,736 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 08:16:11,736 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 08:16:11,737 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 08:16:11,737 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 08:16:11,803 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:16:11,807 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:16:11,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:16:11,920 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:16:11,938 WARN L228 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_back_harness.i[4493,4506] [2021-11-07 08:16:11,938 WARN L228 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_back_harness.i[4553,4566] [2021-11-07 08:16:11,941 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 08:16:11,941 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 08:16:11,979 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 08:16:11,996 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:16:11,998 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:16:11,998 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:16:11,999 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:16:11,999 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:16:12,007 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:16:12,007 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:16:12,008 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:16:12,009 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:16:12,009 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:16:12,010 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:16:12,011 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:16:12,011 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:16:12,040 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 08:16:12,041 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 08:16:12,042 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 08:16:12,043 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 08:16:12,044 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 08:16:12,044 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 08:16:12,044 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 08:16:12,045 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 08:16:12,045 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 08:16:12,045 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 08:16:12,074 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:16:12,079 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 08:16:12,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:16:12,215 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:16:12,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:16:12 WrapperNode [2021-11-07 08:16:12,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:16:12,216 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:16:12,216 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:16:12,216 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:16:12,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:16:12" (1/1) ... [2021-11-07 08:16:12,270 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:16:12" (1/1) ... [2021-11-07 08:16:12,330 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:16:12,334 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:16:12,334 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:16:12,334 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:16:12,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:16:12" (1/1) ... [2021-11-07 08:16:12,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:16:12" (1/1) ... [2021-11-07 08:16:12,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:16:12" (1/1) ... [2021-11-07 08:16:12,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:16:12" (1/1) ... [2021-11-07 08:16:12,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:16:12" (1/1) ... [2021-11-07 08:16:12,421 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:16:12" (1/1) ... [2021-11-07 08:16:12,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:16:12" (1/1) ... [2021-11-07 08:16:12,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:16:12,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:16:12,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:16:12,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:16:12,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:16:12" (1/1) ... [2021-11-07 08:16:12,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:16:12,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 08:16:12,470 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) [2021-11-07 08:16:12,505 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 [2021-11-07 08:16:12,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 08:16:12,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 08:16:12,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 08:16:12,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 08:16:12,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:16:12,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:16:12,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:16:12,522 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-07 08:16:12,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 08:16:12,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 08:16:12,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 08:16:12,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 08:16:19,802 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:16:19,802 INFO L299 CfgBuilder]: Removed 229 assume(true) statements. [2021-11-07 08:16:19,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:16:19 BoogieIcfgContainer [2021-11-07 08:16:19,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:16:19,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:16:19,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:16:19,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:16:19,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:16:10" (1/3) ... [2021-11-07 08:16:19,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a7689a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:16:19, skipping insertion in model container [2021-11-07 08:16:19,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:16:12" (2/3) ... [2021-11-07 08:16:19,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a7689a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:16:19, skipping insertion in model container [2021-11-07 08:16:19,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:16:19" (3/3) ... [2021-11-07 08:16:19,811 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_back_harness.i [2021-11-07 08:16:19,814 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:16:19,814 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2021-11-07 08:16:19,844 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:16:19,848 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 [2021-11-07 08:16:19,848 INFO L340 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-11-07 08:16:19,860 INFO L276 IsEmpty]: Start isEmpty. Operand has 278 states, 264 states have (on average 1.4166666666666667) internal successors, (374), 277 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:19,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 08:16:19,864 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:16:19,865 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:16:19,865 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-07 08:16:19,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:16:19,869 INFO L85 PathProgramCache]: Analyzing trace with hash 949117531, now seen corresponding path program 1 times [2021-11-07 08:16:19,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:16:19,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334794168] [2021-11-07 08:16:19,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:16:19,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:16:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:16:20,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:16:20,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:16:20,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334794168] [2021-11-07 08:16:20,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334794168] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:16:20,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:16:20,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 08:16:20,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596482704] [2021-11-07 08:16:20,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:16:20,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 08:16:20,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:16:20,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 08:16:20,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:16:20,309 INFO L87 Difference]: Start difference. First operand has 278 states, 264 states have (on average 1.4166666666666667) internal successors, (374), 277 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:20,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:16:20,357 INFO L93 Difference]: Finished difference Result 552 states and 743 transitions. [2021-11-07 08:16:20,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 08:16:20,359 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-07 08:16:20,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:16:20,372 INFO L225 Difference]: With dead ends: 552 [2021-11-07 08:16:20,373 INFO L226 Difference]: Without dead ends: 271 [2021-11-07 08:16:20,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:16:20,384 INFO L933 BasicCegarLoop]: 342 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.53ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 08:16:20,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 4.53ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 08:16:20,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-11-07 08:16:20,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2021-11-07 08:16:20,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 258 states have (on average 1.2868217054263567) internal successors, (332), 270 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:20,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 332 transitions. [2021-11-07 08:16:20,444 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 332 transitions. Word has length 51 [2021-11-07 08:16:20,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:16:20,445 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 332 transitions. [2021-11-07 08:16:20,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:20,450 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 332 transitions. [2021-11-07 08:16:20,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 08:16:20,451 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:16:20,451 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:16:20,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 08:16:20,452 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-07 08:16:20,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:16:20,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1385000845, now seen corresponding path program 1 times [2021-11-07 08:16:20,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:16:20,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337200116] [2021-11-07 08:16:20,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:16:20,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:16:20,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:16:20,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:16:20,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:16:20,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337200116] [2021-11-07 08:16:20,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337200116] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:16:20,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:16:20,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:16:20,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192042862] [2021-11-07 08:16:20,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:16:20,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:16:20,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:16:20,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:16:20,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:16:20,712 INFO L87 Difference]: Start difference. First operand 271 states and 332 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:20,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:16:20,758 INFO L93 Difference]: Finished difference Result 529 states and 649 transitions. [2021-11-07 08:16:20,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:16:20,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-07 08:16:20,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:16:20,760 INFO L225 Difference]: With dead ends: 529 [2021-11-07 08:16:20,760 INFO L226 Difference]: Without dead ends: 272 [2021-11-07 08:16:20,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.23ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:16:20,762 INFO L933 BasicCegarLoop]: 331 mSDtfsCounter, 0 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.84ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.68ms IncrementalHoareTripleChecker+Time [2021-11-07 08:16:20,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 658 Invalid, 5 Unknown, 0 Unchecked, 2.84ms Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 32.68ms Time] [2021-11-07 08:16:20,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-11-07 08:16:20,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2021-11-07 08:16:20,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 259 states have (on average 1.2857142857142858) internal successors, (333), 271 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:20,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 333 transitions. [2021-11-07 08:16:20,767 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 333 transitions. Word has length 51 [2021-11-07 08:16:20,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:16:20,768 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 333 transitions. [2021-11-07 08:16:20,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:20,768 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 333 transitions. [2021-11-07 08:16:20,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 08:16:20,769 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:16:20,769 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:16:20,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 08:16:20,769 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-07 08:16:20,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:16:20,770 INFO L85 PathProgramCache]: Analyzing trace with hash -543271857, now seen corresponding path program 1 times [2021-11-07 08:16:20,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:16:20,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178433186] [2021-11-07 08:16:20,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:16:20,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:16:20,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:16:21,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:16:21,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:16:21,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178433186] [2021-11-07 08:16:21,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178433186] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:16:21,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:16:21,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:16:21,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656446238] [2021-11-07 08:16:21,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:16:21,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:16:21,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:16:21,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:16:21,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:16:21,012 INFO L87 Difference]: Start difference. First operand 272 states and 333 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:21,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:16:21,420 INFO L93 Difference]: Finished difference Result 512 states and 626 transitions. [2021-11-07 08:16:21,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:16:21,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-07 08:16:21,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:16:21,421 INFO L225 Difference]: With dead ends: 512 [2021-11-07 08:16:21,421 INFO L226 Difference]: Without dead ends: 272 [2021-11-07 08:16:21,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.95ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:16:21,422 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 451 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 318.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.86ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 358.50ms IncrementalHoareTripleChecker+Time [2021-11-07 08:16:21,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [451 Valid, 432 Invalid, 94 Unknown, 0 Unchecked, 4.86ms Time], IncrementalHoareTripleChecker [8 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 358.50ms Time] [2021-11-07 08:16:21,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-11-07 08:16:21,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2021-11-07 08:16:21,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 259 states have (on average 1.2702702702702702) internal successors, (329), 271 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:21,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 329 transitions. [2021-11-07 08:16:21,428 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 329 transitions. Word has length 51 [2021-11-07 08:16:21,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:16:21,429 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 329 transitions. [2021-11-07 08:16:21,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:21,429 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 329 transitions. [2021-11-07 08:16:21,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 08:16:21,430 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:16:21,431 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:16:21,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 08:16:21,431 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-07 08:16:21,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:16:21,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1050760955, now seen corresponding path program 1 times [2021-11-07 08:16:21,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:16:21,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035920781] [2021-11-07 08:16:21,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:16:21,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:16:21,495 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:16:21,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [382738812] [2021-11-07 08:16:21,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:16:21,496 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:16:21,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 08:16:21,497 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) [2021-11-07 08:16:21,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 08:16:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:16:22,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 2697 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 08:16:22,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:16:23,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:16:23,036 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 08:16:23,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:16:23,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035920781] [2021-11-07 08:16:23,036 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:16:23,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382738812] [2021-11-07 08:16:23,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382738812] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:16:23,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:16:23,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 08:16:23,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131584036] [2021-11-07 08:16:23,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:16:23,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 08:16:23,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:16:23,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 08:16:23,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:16:23,039 INFO L87 Difference]: Start difference. First operand 272 states and 329 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:23,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:16:23,790 INFO L93 Difference]: Finished difference Result 438 states and 527 transitions. [2021-11-07 08:16:23,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 08:16:23,791 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-07 08:16:23,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:16:23,792 INFO L225 Difference]: With dead ends: 438 [2021-11-07 08:16:23,792 INFO L226 Difference]: Without dead ends: 272 [2021-11-07 08:16:23,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 275.33ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-07 08:16:23,793 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 1290 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 492.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1290 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.33ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 552.95ms IncrementalHoareTripleChecker+Time [2021-11-07 08:16:23,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1290 Valid, 391 Invalid, 189 Unknown, 0 Unchecked, 9.33ms Time], IncrementalHoareTripleChecker [50 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 552.95ms Time] [2021-11-07 08:16:23,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-11-07 08:16:23,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2021-11-07 08:16:23,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 259 states have (on average 1.247104247104247) internal successors, (323), 271 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:23,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 323 transitions. [2021-11-07 08:16:23,800 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 323 transitions. Word has length 75 [2021-11-07 08:16:23,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:16:23,801 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 323 transitions. [2021-11-07 08:16:23,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:23,801 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 323 transitions. [2021-11-07 08:16:23,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-07 08:16:23,802 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:16:23,802 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:16:23,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 08:16:24,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:16:24,020 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-07 08:16:24,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:16:24,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1119345469, now seen corresponding path program 1 times [2021-11-07 08:16:24,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:16:24,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027067669] [2021-11-07 08:16:24,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:16:24,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:16:24,089 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:16:24,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2146669581] [2021-11-07 08:16:24,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:16:24,090 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:16:24,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 08:16:24,091 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) [2021-11-07 08:16:24,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 08:16:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:16:24,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 2887 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-07 08:16:24,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:16:25,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:16:25,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 08:16:25,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:16:25,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027067669] [2021-11-07 08:16:25,503 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:16:25,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146669581] [2021-11-07 08:16:25,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146669581] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:16:25,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:16:25,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 08:16:25,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346623865] [2021-11-07 08:16:25,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:16:25,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:16:25,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:16:25,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:16:25,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:16:25,506 INFO L87 Difference]: Start difference. First operand 272 states and 323 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:25,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:16:25,754 INFO L93 Difference]: Finished difference Result 711 states and 842 transitions. [2021-11-07 08:16:25,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 08:16:25,755 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-07 08:16:25,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:16:25,756 INFO L225 Difference]: With dead ends: 711 [2021-11-07 08:16:25,756 INFO L226 Difference]: Without dead ends: 505 [2021-11-07 08:16:25,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 210.54ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:16:25,757 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 531 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 113.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 1581 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.43ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 134.10ms IncrementalHoareTripleChecker+Time [2021-11-07 08:16:25,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 1581 Invalid, 36 Unknown, 0 Unchecked, 3.43ms Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 134.10ms Time] [2021-11-07 08:16:25,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2021-11-07 08:16:25,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 296. [2021-11-07 08:16:25,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 283 states have (on average 1.243816254416961) internal successors, (352), 295 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:25,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 352 transitions. [2021-11-07 08:16:25,766 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 352 transitions. Word has length 91 [2021-11-07 08:16:25,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:16:25,766 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 352 transitions. [2021-11-07 08:16:25,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:25,766 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 352 transitions. [2021-11-07 08:16:25,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-07 08:16:25,767 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:16:25,767 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:16:25,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 08:16:25,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:16:25,988 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-07 08:16:25,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:16:25,988 INFO L85 PathProgramCache]: Analyzing trace with hash 819816577, now seen corresponding path program 1 times [2021-11-07 08:16:25,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:16:25,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569912685] [2021-11-07 08:16:25,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:16:25,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:16:26,055 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:16:26,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [225296283] [2021-11-07 08:16:26,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:16:26,056 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:16:26,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 08:16:26,057 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) [2021-11-07 08:16:26,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 08:16:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:16:26,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 2884 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 08:16:26,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:16:27,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:16:27,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 08:16:27,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:16:27,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569912685] [2021-11-07 08:16:27,334 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:16:27,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225296283] [2021-11-07 08:16:27,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225296283] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:16:27,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:16:27,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 08:16:27,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592251484] [2021-11-07 08:16:27,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:16:27,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:16:27,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:16:27,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:16:27,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:16:27,335 INFO L87 Difference]: Start difference. First operand 296 states and 352 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:27,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:16:27,645 INFO L93 Difference]: Finished difference Result 691 states and 816 transitions. [2021-11-07 08:16:27,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 08:16:27,645 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-07 08:16:27,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:16:27,647 INFO L225 Difference]: With dead ends: 691 [2021-11-07 08:16:27,647 INFO L226 Difference]: Without dead ends: 505 [2021-11-07 08:16:27,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 323.92ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 08:16:27,648 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 477 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 107.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 1570 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.93ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 115.26ms IncrementalHoareTripleChecker+Time [2021-11-07 08:16:27,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [477 Valid, 1570 Invalid, 42 Unknown, 0 Unchecked, 2.93ms Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 115.26ms Time] [2021-11-07 08:16:27,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2021-11-07 08:16:27,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 316. [2021-11-07 08:16:27,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 303 states have (on average 1.2409240924092408) internal successors, (376), 315 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:27,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 376 transitions. [2021-11-07 08:16:27,656 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 376 transitions. Word has length 91 [2021-11-07 08:16:27,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:16:27,656 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 376 transitions. [2021-11-07 08:16:27,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:27,657 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 376 transitions. [2021-11-07 08:16:27,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-07 08:16:27,657 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:16:27,657 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:16:27,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 08:16:27,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:16:27,872 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-07 08:16:27,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:16:27,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1094576191, now seen corresponding path program 1 times [2021-11-07 08:16:27,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:16:27,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63584193] [2021-11-07 08:16:27,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:16:27,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:16:27,935 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:16:27,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [34090634] [2021-11-07 08:16:27,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:16:27,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:16:27,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 08:16:27,937 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) [2021-11-07 08:16:27,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 08:16:28,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:16:28,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 2881 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-07 08:16:28,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:16:28,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:16:28,842 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 08:16:28,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:16:28,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63584193] [2021-11-07 08:16:28,842 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:16:28,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34090634] [2021-11-07 08:16:28,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34090634] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:16:28,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:16:28,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:16:28,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656684290] [2021-11-07 08:16:28,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 08:16:28,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:16:28,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:16:28,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:16:28,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:16:28,843 INFO L87 Difference]: Start difference. First operand 316 states and 376 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:29,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:16:29,001 INFO L93 Difference]: Finished difference Result 502 states and 594 transitions. [2021-11-07 08:16:29,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:16:29,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-07 08:16:29,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:16:29,003 INFO L225 Difference]: With dead ends: 502 [2021-11-07 08:16:29,003 INFO L226 Difference]: Without dead ends: 272 [2021-11-07 08:16:29,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.93ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:16:29,004 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 1 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 118.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.62ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 127.14ms IncrementalHoareTripleChecker+Time [2021-11-07 08:16:29,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 923 Invalid, 42 Unknown, 0 Unchecked, 1.62ms Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 127.14ms Time] [2021-11-07 08:16:29,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-11-07 08:16:29,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2021-11-07 08:16:29,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 259 states have (on average 1.2393822393822393) internal successors, (321), 271 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:29,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 321 transitions. [2021-11-07 08:16:29,012 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 321 transitions. Word has length 91 [2021-11-07 08:16:29,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:16:29,012 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 321 transitions. [2021-11-07 08:16:29,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:16:29,013 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 321 transitions. [2021-11-07 08:16:29,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-07 08:16:29,015 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 08:16:29,015 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:16:29,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 08:16:29,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:16:29,235 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-11-07 08:16:29,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:16:29,236 INFO L85 PathProgramCache]: Analyzing trace with hash -553423599, now seen corresponding path program 1 times [2021-11-07 08:16:29,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:16:29,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929180315] [2021-11-07 08:16:29,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:16:29,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:16:29,308 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:16:29,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [323797197] [2021-11-07 08:16:29,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:16:29,308 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:16:29,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 08:16:29,309 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) [2021-11-07 08:16:29,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Killed by 15