./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 5f08f0f0 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-5f08f0f [2021-11-05 11:46:25,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 11:46:25,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 11:46:25,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 11:46:25,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 11:46:25,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 11:46:25,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 11:46:25,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 11:46:25,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 11:46:25,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 11:46:25,693 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 11:46:25,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 11:46:25,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 11:46:25,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 11:46:25,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 11:46:25,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 11:46:25,701 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 11:46:25,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 11:46:25,705 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 11:46:25,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 11:46:25,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 11:46:25,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 11:46:25,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 11:46:25,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 11:46:25,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 11:46:25,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 11:46:25,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 11:46:25,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 11:46:25,719 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 11:46:25,720 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 11:46:25,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 11:46:25,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 11:46:25,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 11:46:25,722 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 11:46:25,723 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 11:46:25,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 11:46:25,724 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 11:46:25,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 11:46:25,725 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 11:46:25,726 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 11:46:25,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 11:46:25,727 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 11:46:25,748 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 11:46:25,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 11:46:25,749 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 11:46:25,750 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 11:46:25,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 11:46:25,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 11:46:25,751 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 11:46:25,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 11:46:25,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 11:46:25,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 11:46:25,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 11:46:25,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 11:46:25,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 11:46:25,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 11:46:25,753 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 11:46:25,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 11:46:25,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 11:46:25,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 11:46:25,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 11:46:25,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 11:46:25,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 11:46:25,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 11:46:25,754 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 11:46:25,754 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 11:46:25,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 11:46:25,755 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 11:46:25,755 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 11:46:25,755 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 11:46:25,755 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 11:46:25,755 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43b2ef256b4d1a93a084f86d3d9a0522c1b29c695f7bf9f8438f4c917cc80da0 [2021-11-05 11:46:26,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 11:46:26,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 11:46:26,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 11:46:26,044 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 11:46:26,044 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 11:46:26,045 INFO L432 ainManager$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 [2021-11-05 11:46:26,088 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4833df0ee/d4417fbe28e94bf6b13a2f06740d8efe/FLAGa99767fb1 [2021-11-05 11:46:26,677 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 11:46:26,677 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i [2021-11-05 11:46:26,700 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4833df0ee/d4417fbe28e94bf6b13a2f06740d8efe/FLAGa99767fb1 [2021-11-05 11:46:27,114 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4833df0ee/d4417fbe28e94bf6b13a2f06740d8efe [2021-11-05 11:46:27,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 11:46:27,118 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 11:46:27,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 11:46:27,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 11:46:27,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 11:46:27,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 11:46:27" (1/1) ... [2021-11-05 11:46:27,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29cc9a07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:27, skipping insertion in model container [2021-11-05 11:46:27,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 11:46:27" (1/1) ... [2021-11-05 11:46:27,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 11:46:27,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 11:46:27,385 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] [2021-11-05 11:46:27,390 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] [2021-11-05 11:46:27,403 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 11:46:27,408 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 11:46:27,803 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 11:46:27,839 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:27,840 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:27,840 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:27,840 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:27,841 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:27,847 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:27,848 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:27,849 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:27,849 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:27,850 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:27,851 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:27,851 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:27,851 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,024 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 11:46:28,024 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 11:46:28,025 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 11:46:28,026 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 11:46:28,027 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 11:46:28,027 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 11:46:28,028 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 11:46:28,028 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 11:46:28,029 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 11:46:28,029 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 11:46:28,103 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,108 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 11:46:28,165 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 11:46:28,174 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] [2021-11-05 11:46:28,174 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] [2021-11-05 11:46:28,176 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 11:46:28,177 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 11:46:28,210 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 11:46:28,222 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,226 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,227 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,227 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,228 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,232 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,234 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,235 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,238 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,239 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,240 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,241 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,241 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,277 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 11:46:28,279 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 11:46:28,279 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 11:46:28,280 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 11:46:28,281 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 11:46:28,283 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 11:46:28,283 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 11:46:28,284 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 11:46:28,284 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 11:46:28,284 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 11:46:28,324 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,330 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 11:46:28,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 11:46:28,531 INFO L208 MainTranslator]: Completed translation [2021-11-05 11:46:28,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28 WrapperNode [2021-11-05 11:46:28,532 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 11:46:28,532 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 11:46:28,533 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 11:46:28,533 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 11:46:28,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (1/1) ... [2021-11-05 11:46:28,610 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (1/1) ... [2021-11-05 11:46:28,706 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 11:46:28,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 11:46:28,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 11:46:28,708 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 11:46:28,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (1/1) ... [2021-11-05 11:46:28,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (1/1) ... [2021-11-05 11:46:28,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (1/1) ... [2021-11-05 11:46:28,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (1/1) ... [2021-11-05 11:46:28,769 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (1/1) ... [2021-11-05 11:46:28,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (1/1) ... [2021-11-05 11:46:28,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (1/1) ... [2021-11-05 11:46:28,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 11:46:28,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 11:46:28,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 11:46:28,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 11:46:28,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (1/1) ... [2021-11-05 11:46:28,818 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 11:46:28,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 11:46:28,834 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) [2021-11-05 11:46:28,851 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 [2021-11-05 11:46:28,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 11:46:28,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 11:46:28,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 11:46:28,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 11:46:28,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 11:46:28,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 11:46:28,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 11:46:28,865 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-05 11:46:28,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 11:46:28,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 11:46:28,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 11:46:28,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 11:46:36,544 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 11:46:36,544 INFO L299 CfgBuilder]: Removed 229 assume(true) statements. [2021-11-05 11:46:36,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 11:46:36 BoogieIcfgContainer [2021-11-05 11:46:36,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 11:46:36,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 11:46:36,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 11:46:36,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 11:46:36,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 11:46:27" (1/3) ... [2021-11-05 11:46:36,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@469e4a64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 11:46:36, skipping insertion in model container [2021-11-05 11:46:36,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 11:46:28" (2/3) ... [2021-11-05 11:46:36,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@469e4a64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 11:46:36, skipping insertion in model container [2021-11-05 11:46:36,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 11:46:36" (3/3) ... [2021-11-05 11:46:36,551 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_back_harness.i [2021-11-05 11:46:36,554 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 11:46:36,554 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2021-11-05 11:46:36,583 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 11:46:36,587 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 [2021-11-05 11:46:36,588 INFO L340 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-11-05 11:46:36,599 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) [2021-11-05 11:46:36,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-05 11:46:36,606 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:46:36,606 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] [2021-11-05 11:46:36,607 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)] === [2021-11-05 11:46:36,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:46:36,610 INFO L85 PathProgramCache]: Analyzing trace with hash 949117531, now seen corresponding path program 1 times [2021-11-05 11:46:36,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:46:36,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628562720] [2021-11-05 11:46:36,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:36,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:46:36,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:46:37,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:46:37,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:46:37,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628562720] [2021-11-05 11:46:37,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628562720] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:46:37,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:46:37,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 11:46:37,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846880536] [2021-11-05 11:46:37,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:46:37,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 11:46:37,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:46:37,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 11:46:37,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 11:46:37,142 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) [2021-11-05 11:46:37,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:46:37,185 INFO L93 Difference]: Finished difference Result 552 states and 743 transitions. [2021-11-05 11:46:37,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 11:46:37,187 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 [2021-11-05 11:46:37,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:46:37,202 INFO L225 Difference]: With dead ends: 552 [2021-11-05 11:46:37,202 INFO L226 Difference]: Without dead ends: 271 [2021-11-05 11:46:37,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 11:46:37,212 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, 3.31ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 11:46:37,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 3.31ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 11:46:37,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-11-05 11:46:37,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2021-11-05 11:46:37,274 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) [2021-11-05 11:46:37,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 332 transitions. [2021-11-05 11:46:37,278 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 332 transitions. Word has length 51 [2021-11-05 11:46:37,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:46:37,279 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 332 transitions. [2021-11-05 11:46:37,279 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) [2021-11-05 11:46:37,279 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 332 transitions. [2021-11-05 11:46:37,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-05 11:46:37,281 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:46:37,281 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] [2021-11-05 11:46:37,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 11:46:37,282 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)] === [2021-11-05 11:46:37,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:46:37,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1385000845, now seen corresponding path program 1 times [2021-11-05 11:46:37,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:46:37,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003301467] [2021-11-05 11:46:37,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:37,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:46:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:46:37,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:46:37,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:46:37,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003301467] [2021-11-05 11:46:37,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003301467] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:46:37,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:46:37,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 11:46:37,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905839808] [2021-11-05 11:46:37,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:46:37,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 11:46:37,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:46:37,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 11:46:37,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 11:46:37,545 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) [2021-11-05 11:46:37,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:46:37,607 INFO L93 Difference]: Finished difference Result 529 states and 649 transitions. [2021-11-05 11:46:37,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 11:46:37,608 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 [2021-11-05 11:46:37,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:46:37,609 INFO L225 Difference]: With dead ends: 529 [2021-11-05 11:46:37,609 INFO L226 Difference]: Without dead ends: 272 [2021-11-05 11:46:37,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.96ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 11:46:37,610 INFO L933 BasicCegarLoop]: 331 mSDtfsCounter, 0 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.22ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.68ms IncrementalHoareTripleChecker+Time [2021-11-05 11:46:37,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 658 Invalid, 5 Unknown, 0 Unchecked, 3.22ms Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 39.68ms Time] [2021-11-05 11:46:37,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-11-05 11:46:37,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2021-11-05 11:46:37,617 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) [2021-11-05 11:46:37,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 333 transitions. [2021-11-05 11:46:37,618 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 333 transitions. Word has length 51 [2021-11-05 11:46:37,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:46:37,619 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 333 transitions. [2021-11-05 11:46:37,619 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) [2021-11-05 11:46:37,619 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 333 transitions. [2021-11-05 11:46:37,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-05 11:46:37,620 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:46:37,620 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] [2021-11-05 11:46:37,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 11:46:37,621 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)] === [2021-11-05 11:46:37,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:46:37,621 INFO L85 PathProgramCache]: Analyzing trace with hash -543271857, now seen corresponding path program 1 times [2021-11-05 11:46:37,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:46:37,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468060571] [2021-11-05 11:46:37,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:37,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:46:37,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:46:37,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:46:37,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:46:37,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468060571] [2021-11-05 11:46:37,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468060571] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:46:37,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:46:37,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 11:46:37,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997970230] [2021-11-05 11:46:37,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:46:37,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 11:46:37,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:46:37,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 11:46:37,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 11:46:37,882 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) [2021-11-05 11:46:38,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:46:38,336 INFO L93 Difference]: Finished difference Result 512 states and 626 transitions. [2021-11-05 11:46:38,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 11:46:38,337 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 [2021-11-05 11:46:38,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:46:38,338 INFO L225 Difference]: With dead ends: 512 [2021-11-05 11:46:38,338 INFO L226 Difference]: Without dead ends: 272 [2021-11-05 11:46:38,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 77.43ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 11:46:38,340 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 451 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 334.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.18ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 394.70ms IncrementalHoareTripleChecker+Time [2021-11-05 11:46:38,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [451 Valid, 432 Invalid, 94 Unknown, 0 Unchecked, 6.18ms Time], IncrementalHoareTripleChecker [8 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 394.70ms Time] [2021-11-05 11:46:38,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-11-05 11:46:38,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2021-11-05 11:46:38,355 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) [2021-11-05 11:46:38,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 329 transitions. [2021-11-05 11:46:38,357 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 329 transitions. Word has length 51 [2021-11-05 11:46:38,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:46:38,357 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 329 transitions. [2021-11-05 11:46:38,357 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) [2021-11-05 11:46:38,358 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 329 transitions. [2021-11-05 11:46:38,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-05 11:46:38,361 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:46:38,361 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] [2021-11-05 11:46:38,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 11:46:38,362 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)] === [2021-11-05 11:46:38,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:46:38,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1050760955, now seen corresponding path program 1 times [2021-11-05 11:46:38,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:46:38,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078815041] [2021-11-05 11:46:38,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:38,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:46:38,453 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 11:46:38,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [469818505] [2021-11-05 11:46:38,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:38,456 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 11:46:38,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 11:46:38,457 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) [2021-11-05 11:46:38,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 11:46:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:46:39,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 2697 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-05 11:46:39,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 11:46:39,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:46:39,959 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 11:46:39,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:46:39,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078815041] [2021-11-05 11:46:39,959 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 11:46:39,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469818505] [2021-11-05 11:46:39,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469818505] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:46:39,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:46:39,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 11:46:39,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227068216] [2021-11-05 11:46:39,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:46:39,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 11:46:39,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:46:39,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 11:46:39,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 11:46:39,961 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) [2021-11-05 11:46:40,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:46:40,673 INFO L93 Difference]: Finished difference Result 438 states and 527 transitions. [2021-11-05 11:46:40,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 11:46:40,674 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 [2021-11-05 11:46:40,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:46:40,675 INFO L225 Difference]: With dead ends: 438 [2021-11-05 11:46:40,675 INFO L226 Difference]: Without dead ends: 272 [2021-11-05 11:46:40,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 270.21ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-05 11:46:40,678 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 1290 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 473.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1290 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.96ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 527.88ms IncrementalHoareTripleChecker+Time [2021-11-05 11:46:40,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1290 Valid, 391 Invalid, 189 Unknown, 0 Unchecked, 5.96ms Time], IncrementalHoareTripleChecker [50 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 527.88ms Time] [2021-11-05 11:46:40,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-11-05 11:46:40,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2021-11-05 11:46:40,684 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) [2021-11-05 11:46:40,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 323 transitions. [2021-11-05 11:46:40,685 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 323 transitions. Word has length 75 [2021-11-05 11:46:40,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:46:40,685 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 323 transitions. [2021-11-05 11:46:40,686 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) [2021-11-05 11:46:40,686 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 323 transitions. [2021-11-05 11:46:40,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-05 11:46:40,686 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:46:40,687 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] [2021-11-05 11:46:40,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-05 11:46:40,887 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 [2021-11-05 11:46:40,888 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)] === [2021-11-05 11:46:40,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:46:40,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1119345469, now seen corresponding path program 1 times [2021-11-05 11:46:40,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:46:40,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302771042] [2021-11-05 11:46:40,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:40,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:46:40,963 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 11:46:40,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [638624314] [2021-11-05 11:46:40,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:40,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 11:46:40,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 11:46:40,966 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) [2021-11-05 11:46:40,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 11:46:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:46:41,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 2887 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-05 11:46:41,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 11:46:42,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:46:42,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 11:46:42,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:46:42,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302771042] [2021-11-05 11:46:42,231 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 11:46:42,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638624314] [2021-11-05 11:46:42,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638624314] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:46:42,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:46:42,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 11:46:42,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129486773] [2021-11-05 11:46:42,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:46:42,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 11:46:42,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:46:42,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 11:46:42,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 11:46:42,233 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) [2021-11-05 11:46:42,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:46:42,434 INFO L93 Difference]: Finished difference Result 711 states and 842 transitions. [2021-11-05 11:46:42,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 11:46:42,435 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 [2021-11-05 11:46:42,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:46:42,436 INFO L225 Difference]: With dead ends: 711 [2021-11-05 11:46:42,437 INFO L226 Difference]: Without dead ends: 505 [2021-11-05 11:46:42,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 168.21ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-05 11:46:42,438 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 531 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 101.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 1581 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.74ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 107.65ms IncrementalHoareTripleChecker+Time [2021-11-05 11:46:42,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 1581 Invalid, 36 Unknown, 0 Unchecked, 2.74ms Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 107.65ms Time] [2021-11-05 11:46:42,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2021-11-05 11:46:42,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 296. [2021-11-05 11:46:42,446 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) [2021-11-05 11:46:42,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 352 transitions. [2021-11-05 11:46:42,446 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 352 transitions. Word has length 91 [2021-11-05 11:46:42,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:46:42,447 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 352 transitions. [2021-11-05 11:46:42,447 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) [2021-11-05 11:46:42,447 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 352 transitions. [2021-11-05 11:46:42,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-05 11:46:42,448 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:46:42,448 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] [2021-11-05 11:46:42,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-05 11:46:42,670 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 [2021-11-05 11:46:42,673 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)] === [2021-11-05 11:46:42,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:46:42,673 INFO L85 PathProgramCache]: Analyzing trace with hash 819816577, now seen corresponding path program 1 times [2021-11-05 11:46:42,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:46:42,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554892071] [2021-11-05 11:46:42,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:42,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:46:42,749 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 11:46:42,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1637668582] [2021-11-05 11:46:42,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:42,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 11:46:42,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 11:46:42,751 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) [2021-11-05 11:46:42,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-05 11:46:43,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:46:43,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 2884 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-05 11:46:43,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 11:46:44,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:46:44,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 11:46:44,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:46:44,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554892071] [2021-11-05 11:46:44,020 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 11:46:44,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637668582] [2021-11-05 11:46:44,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637668582] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:46:44,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:46:44,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 11:46:44,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157942290] [2021-11-05 11:46:44,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:46:44,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 11:46:44,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:46:44,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 11:46:44,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 11:46:44,022 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) [2021-11-05 11:46:44,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:46:44,318 INFO L93 Difference]: Finished difference Result 691 states and 816 transitions. [2021-11-05 11:46:44,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 11:46:44,319 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 [2021-11-05 11:46:44,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:46:44,321 INFO L225 Difference]: With dead ends: 691 [2021-11-05 11:46:44,321 INFO L226 Difference]: Without dead ends: 505 [2021-11-05 11:46:44,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 300.88ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-05 11:46:44,322 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 477 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 106.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 1570 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.85ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 124.87ms IncrementalHoareTripleChecker+Time [2021-11-05 11:46:44,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [477 Valid, 1570 Invalid, 42 Unknown, 0 Unchecked, 2.85ms Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 124.87ms Time] [2021-11-05 11:46:44,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2021-11-05 11:46:44,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 316. [2021-11-05 11:46:44,332 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) [2021-11-05 11:46:44,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 376 transitions. [2021-11-05 11:46:44,333 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 376 transitions. Word has length 91 [2021-11-05 11:46:44,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:46:44,333 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 376 transitions. [2021-11-05 11:46:44,333 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) [2021-11-05 11:46:44,333 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 376 transitions. [2021-11-05 11:46:44,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-05 11:46:44,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:46:44,334 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] [2021-11-05 11:46:44,357 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-05 11:46:44,547 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 [2021-11-05 11:46:44,547 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)] === [2021-11-05 11:46:44,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:46:44,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1094576191, now seen corresponding path program 1 times [2021-11-05 11:46:44,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:46:44,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000059593] [2021-11-05 11:46:44,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:44,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:46:44,610 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 11:46:44,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1400797701] [2021-11-05 11:46:44,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:44,610 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 11:46:44,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 11:46:44,611 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) [2021-11-05 11:46:44,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-05 11:46:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 11:46:45,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 2881 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-05 11:46:45,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 11:46:45,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 11:46:45,569 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 11:46:45,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 11:46:45,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000059593] [2021-11-05 11:46:45,569 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 11:46:45,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400797701] [2021-11-05 11:46:45,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400797701] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 11:46:45,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 11:46:45,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 11:46:45,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649934698] [2021-11-05 11:46:45,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 11:46:45,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 11:46:45,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 11:46:45,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 11:46:45,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 11:46:45,570 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) [2021-11-05 11:46:45,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 11:46:45,734 INFO L93 Difference]: Finished difference Result 502 states and 594 transitions. [2021-11-05 11:46:45,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 11:46:45,735 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 [2021-11-05 11:46:45,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 11:46:45,736 INFO L225 Difference]: With dead ends: 502 [2021-11-05 11:46:45,736 INFO L226 Difference]: Without dead ends: 272 [2021-11-05 11:46:45,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.28ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 11:46:45,737 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 1 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 119.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.42ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 129.40ms IncrementalHoareTripleChecker+Time [2021-11-05 11:46:45,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 923 Invalid, 42 Unknown, 0 Unchecked, 1.42ms Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 129.40ms Time] [2021-11-05 11:46:45,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-11-05 11:46:45,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2021-11-05 11:46:45,745 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) [2021-11-05 11:46:45,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 321 transitions. [2021-11-05 11:46:45,745 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 321 transitions. Word has length 91 [2021-11-05 11:46:45,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 11:46:45,745 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 321 transitions. [2021-11-05 11:46:45,746 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) [2021-11-05 11:46:45,746 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 321 transitions. [2021-11-05 11:46:45,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-05 11:46:45,747 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 11:46:45,748 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] [2021-11-05 11:46:45,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-05 11:46:45,959 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 [2021-11-05 11:46:45,959 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)] === [2021-11-05 11:46:45,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 11:46:45,960 INFO L85 PathProgramCache]: Analyzing trace with hash -553423599, now seen corresponding path program 1 times [2021-11-05 11:46:45,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 11:46:45,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940100542] [2021-11-05 11:46:45,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:45,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 11:46:46,019 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 11:46:46,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1719254720] [2021-11-05 11:46:46,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 11:46:46,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 11:46:46,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 11:46:46,024 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) [2021-11-05 11:46:46,025 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