./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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_linked_list_pop_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 bcbdd24aa3539f554995115754c17957131f4a70e9c01f3bd768b3e606eed4d4 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 22:27:03,760 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 22:27:03,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 22:27:03,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 22:27:03,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 22:27:03,798 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 22:27:03,800 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 22:27:03,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 22:27:03,806 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 22:27:03,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 22:27:03,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 22:27:03,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 22:27:03,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 22:27:03,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 22:27:03,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 22:27:03,818 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 22:27:03,819 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 22:27:03,821 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 22:27:03,822 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 22:27:03,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 22:27:03,827 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 22:27:03,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 22:27:03,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 22:27:03,830 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 22:27:03,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 22:27:03,837 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 22:27:03,837 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 22:27:03,837 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 22:27:03,838 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 22:27:03,839 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 22:27:03,840 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 22:27:03,840 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 22:27:03,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 22:27:03,842 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 22:27:03,842 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 22:27:03,843 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 22:27:03,843 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 22:27:03,844 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 22:27:03,844 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 22:27:03,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 22:27:03,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 22:27:03,847 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 22:27:03,848 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 22:27:03,877 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 22:27:03,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 22:27:03,879 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 22:27:03,879 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 22:27:03,880 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 22:27:03,880 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 22:27:03,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 22:27:03,881 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 22:27:03,881 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 22:27:03,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 22:27:03,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 22:27:03,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 22:27:03,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 22:27:03,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 22:27:03,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 22:27:03,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 22:27:03,883 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 22:27:03,883 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 22:27:03,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 22:27:03,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 22:27:03,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 22:27:03,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:27:03,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 22:27:03,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 22:27:03,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 22:27:03,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 22:27:03,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 22:27:03,887 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 22:27:03,887 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 22:27:03,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 22:27:03,887 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcbdd24aa3539f554995115754c17957131f4a70e9c01f3bd768b3e606eed4d4 [2022-07-22 22:27:04,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 22:27:04,144 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 22:27:04,146 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 22:27:04,147 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 22:27:04,148 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 22:27:04,149 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i [2022-07-22 22:27:04,203 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5df8d2402/8d6d0de982564826855bc575aed39498/FLAGf83fd752b [2022-07-22 22:27:04,764 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 22:27:04,765 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i [2022-07-22 22:27:04,798 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5df8d2402/8d6d0de982564826855bc575aed39498/FLAGf83fd752b [2022-07-22 22:27:05,175 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5df8d2402/8d6d0de982564826855bc575aed39498 [2022-07-22 22:27:05,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 22:27:05,179 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 22:27:05,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 22:27:05,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 22:27:05,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 22:27:05,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:27:05" (1/1) ... [2022-07-22 22:27:05,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f64050a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:27:05, skipping insertion in model container [2022-07-22 22:27:05,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:27:05" (1/1) ... [2022-07-22 22:27:05,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 22:27:05,272 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 22:27:05,477 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i[4498,4511] [2022-07-22 22:27:05,482 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i[4558,4571] [2022-07-22 22:27:05,980 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:05,983 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:05,984 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:05,990 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:05,991 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:06,013 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:06,019 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:06,021 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:06,022 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:06,023 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:06,024 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:06,025 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:06,025 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:06,228 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:27:06,229 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:27:06,230 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:27:06,231 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:27:06,235 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:27:06,235 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:27:06,236 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:27:06,236 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:27:06,237 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:27:06,237 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:27:06,317 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:27:06,338 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:27:06,350 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 22:27:06,361 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i[4498,4511] [2022-07-22 22:27:06,362 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i[4558,4571] [2022-07-22 22:27:06,413 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:06,414 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:06,415 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:06,416 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:06,418 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:06,450 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:06,451 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:06,459 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:06,459 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:06,460 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:06,462 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:06,462 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:06,463 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:06,522 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:27:06,524 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:27:06,525 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:27:06,525 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:27:06,531 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:27:06,531 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:27:06,532 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:27:06,532 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:27:06,533 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:27:06,533 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:27:06,563 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:27:06,580 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:27:06,784 INFO L208 MainTranslator]: Completed translation [2022-07-22 22:27:06,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:27:06 WrapperNode [2022-07-22 22:27:06,785 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 22:27:06,786 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 22:27:06,786 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 22:27:06,786 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 22:27:06,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:27:06" (1/1) ... [2022-07-22 22:27:06,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:27:06" (1/1) ... [2022-07-22 22:27:06,910 INFO L137 Inliner]: procedures = 679, calls = 1046, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 225 [2022-07-22 22:27:06,911 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 22:27:06,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 22:27:06,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 22:27:06,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 22:27:06,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:27:06" (1/1) ... [2022-07-22 22:27:06,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:27:06" (1/1) ... [2022-07-22 22:27:06,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:27:06" (1/1) ... [2022-07-22 22:27:06,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:27:06" (1/1) ... [2022-07-22 22:27:06,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:27:06" (1/1) ... [2022-07-22 22:27:06,972 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:27:06" (1/1) ... [2022-07-22 22:27:06,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:27:06" (1/1) ... [2022-07-22 22:27:06,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 22:27:06,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 22:27:06,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 22:27:06,997 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 22:27:06,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:27:06" (1/1) ... [2022-07-22 22:27:07,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:27:07,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:27:07,032 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 22:27:07,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 22:27:07,080 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-07-22 22:27:07,080 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-07-22 22:27:07,081 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_remove [2022-07-22 22:27:07,081 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_remove [2022-07-22 22:27:07,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 22:27:07,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 22:27:07,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-22 22:27:07,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-22 22:27:07,083 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2022-07-22 22:27:07,083 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2022-07-22 22:27:07,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 22:27:07,084 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2022-07-22 22:27:07,084 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2022-07-22 22:27:07,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 22:27:07,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 22:27:07,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 22:27:07,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 22:27:07,085 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2022-07-22 22:27:07,085 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2022-07-22 22:27:07,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-22 22:27:07,086 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-22 22:27:07,086 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 22:27:07,086 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 22:27:07,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 22:27:07,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 22:27:07,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 22:27:07,088 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-22 22:27:07,088 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-22 22:27:07,088 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2022-07-22 22:27:07,088 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2022-07-22 22:27:07,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 22:27:07,336 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 22:27:07,338 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 22:27:07,667 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 22:27:07,677 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 22:27:07,678 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-07-22 22:27:07,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:27:07 BoogieIcfgContainer [2022-07-22 22:27:07,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 22:27:07,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 22:27:07,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 22:27:07,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 22:27:07,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 10:27:05" (1/3) ... [2022-07-22 22:27:07,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d14895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:27:07, skipping insertion in model container [2022-07-22 22:27:07,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:27:06" (2/3) ... [2022-07-22 22:27:07,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d14895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:27:07, skipping insertion in model container [2022-07-22 22:27:07,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:27:07" (3/3) ... [2022-07-22 22:27:07,690 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_pop_back_harness.i [2022-07-22 22:27:07,703 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 22:27:07,703 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 22:27:07,765 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 22:27:07,775 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2f59f04d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3fde2d01 [2022-07-22 22:27:07,776 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 22:27:07,780 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 89 states have (on average 1.303370786516854) internal successors, (116), 90 states have internal predecessors, (116), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-07-22 22:27:07,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-22 22:27:07,796 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:27:07,797 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:27:07,798 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:27:07,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:27:07,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1579343520, now seen corresponding path program 1 times [2022-07-22 22:27:07,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:27:07,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830477320] [2022-07-22 22:27:07,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:27:07,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:27:08,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:08,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:27:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:08,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:27:08,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:08,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:27:08,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:08,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:27:08,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:08,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 22:27:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:08,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 22:27:08,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:08,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:27:08,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:08,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 22:27:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:08,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 22:27:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:08,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 22:27:08,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:08,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 22:27:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:08,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 22:27:08,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:08,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 22:27:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:08,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:27:08,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:08,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 22:27:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:08,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 22:27:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:08,529 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2022-07-22 22:27:08,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:27:08,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830477320] [2022-07-22 22:27:08,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830477320] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:27:08,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950884854] [2022-07-22 22:27:08,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:27:08,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:27:08,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:27:08,533 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:27:08,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 22:27:08,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:08,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 22:27:08,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:27:08,825 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-22 22:27:08,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:27:08,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950884854] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:27:08,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:27:08,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2022-07-22 22:27:08,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693253851] [2022-07-22 22:27:08,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:27:08,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 22:27:08,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:27:08,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 22:27:08,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 22:27:08,868 INFO L87 Difference]: Start difference. First operand has 137 states, 89 states have (on average 1.303370786516854) internal successors, (116), 90 states have internal predecessors, (116), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 22:27:08,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:27:08,957 INFO L93 Difference]: Finished difference Result 274 states and 414 transitions. [2022-07-22 22:27:08,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:27:08,959 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 116 [2022-07-22 22:27:08,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:27:08,973 INFO L225 Difference]: With dead ends: 274 [2022-07-22 22:27:08,973 INFO L226 Difference]: Without dead ends: 140 [2022-07-22 22:27:08,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:27:08,983 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 12 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:27:08,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 536 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:27:09,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-07-22 22:27:09,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 134. [2022-07-22 22:27:09,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 86 states have (on average 1.244186046511628) internal successors, (107), 87 states have internal predecessors, (107), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-07-22 22:27:09,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 180 transitions. [2022-07-22 22:27:09,037 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 180 transitions. Word has length 116 [2022-07-22 22:27:09,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:27:09,039 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 180 transitions. [2022-07-22 22:27:09,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 22:27:09,039 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 180 transitions. [2022-07-22 22:27:09,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-22 22:27:09,041 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:27:09,042 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:27:09,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 22:27:09,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-22 22:27:09,264 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:27:09,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:27:09,264 INFO L85 PathProgramCache]: Analyzing trace with hash -183799078, now seen corresponding path program 1 times [2022-07-22 22:27:09,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:27:09,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317764359] [2022-07-22 22:27:09,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:27:09,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:27:09,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:09,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:27:09,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:09,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:27:09,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:09,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:27:09,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:09,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:27:09,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:09,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 22:27:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:09,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 22:27:09,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:09,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:27:09,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:09,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 22:27:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:09,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 22:27:09,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:09,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 22:27:09,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:09,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 22:27:09,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:09,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 22:27:09,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:09,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 22:27:09,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:09,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:27:09,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:09,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 22:27:09,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:09,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 22:27:09,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:09,518 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-07-22 22:27:09,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:27:09,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317764359] [2022-07-22 22:27:09,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317764359] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:27:09,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568198784] [2022-07-22 22:27:09,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:27:09,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:27:09,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:27:09,521 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:27:09,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 22:27:09,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:09,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 22:27:09,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:27:09,727 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-07-22 22:27:09,727 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:27:09,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568198784] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:27:09,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:27:09,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2022-07-22 22:27:09,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494421672] [2022-07-22 22:27:09,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:27:09,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 22:27:09,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:27:09,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 22:27:09,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 22:27:09,730 INFO L87 Difference]: Start difference. First operand 134 states and 180 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 22:27:09,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:27:09,771 INFO L93 Difference]: Finished difference Result 252 states and 345 transitions. [2022-07-22 22:27:09,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:27:09,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 116 [2022-07-22 22:27:09,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:27:09,776 INFO L225 Difference]: With dead ends: 252 [2022-07-22 22:27:09,776 INFO L226 Difference]: Without dead ends: 138 [2022-07-22 22:27:09,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:27:09,778 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 3 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:27:09,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 520 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:27:09,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-07-22 22:27:09,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 137. [2022-07-22 22:27:09,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 89 states have (on average 1.2359550561797752) internal successors, (110), 90 states have internal predecessors, (110), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-07-22 22:27:09,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 183 transitions. [2022-07-22 22:27:09,790 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 183 transitions. Word has length 116 [2022-07-22 22:27:09,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:27:09,791 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 183 transitions. [2022-07-22 22:27:09,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 22:27:09,791 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 183 transitions. [2022-07-22 22:27:09,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-22 22:27:09,792 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:27:09,793 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:27:09,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 22:27:10,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-07-22 22:27:10,017 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:27:10,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:27:10,018 INFO L85 PathProgramCache]: Analyzing trace with hash -543175276, now seen corresponding path program 1 times [2022-07-22 22:27:10,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:27:10,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288922122] [2022-07-22 22:27:10,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:27:10,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:27:10,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:10,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:27:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:10,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:27:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:10,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:27:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:10,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:27:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:10,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 22:27:10,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:10,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 22:27:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:10,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:27:10,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:10,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 22:27:10,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:10,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 22:27:10,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:10,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 22:27:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:10,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 22:27:10,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:10,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 22:27:10,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:10,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 22:27:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:10,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:27:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:10,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 22:27:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:10,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 22:27:10,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:10,411 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-07-22 22:27:10,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:27:10,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288922122] [2022-07-22 22:27:10,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288922122] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:27:10,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107721719] [2022-07-22 22:27:10,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:27:10,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:27:10,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:27:10,416 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:27:10,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 22:27:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:10,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 40 conjunts are in the unsatisfiable core [2022-07-22 22:27:10,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:27:10,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:27:10,709 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-07-22 22:27:11,246 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-22 22:27:11,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:27:11,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107721719] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:27:11,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:27:11,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2022-07-22 22:27:11,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234394672] [2022-07-22 22:27:11,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:27:11,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 22:27:11,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:27:11,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 22:27:11,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2022-07-22 22:27:11,249 INFO L87 Difference]: Start difference. First operand 137 states and 183 transitions. Second operand has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-07-22 22:27:11,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:27:11,415 INFO L93 Difference]: Finished difference Result 327 states and 440 transitions. [2022-07-22 22:27:11,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 22:27:11,415 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 116 [2022-07-22 22:27:11,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:27:11,422 INFO L225 Difference]: With dead ends: 327 [2022-07-22 22:27:11,422 INFO L226 Difference]: Without dead ends: 203 [2022-07-22 22:27:11,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 134 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2022-07-22 22:27:11,425 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 63 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 126 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:27:11,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 1097 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 126 Unchecked, 0.1s Time] [2022-07-22 22:27:11,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-07-22 22:27:11,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 169. [2022-07-22 22:27:11,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 112 states have (on average 1.2142857142857142) internal successors, (136), 114 states have internal predecessors, (136), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (43), 41 states have call predecessors, (43), 42 states have call successors, (43) [2022-07-22 22:27:11,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 222 transitions. [2022-07-22 22:27:11,446 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 222 transitions. Word has length 116 [2022-07-22 22:27:11,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:27:11,446 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 222 transitions. [2022-07-22 22:27:11,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-07-22 22:27:11,446 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 222 transitions. [2022-07-22 22:27:11,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-22 22:27:11,452 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:27:11,452 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:27:11,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 22:27:11,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:27:11,675 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:27:11,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:27:11,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1369878566, now seen corresponding path program 1 times [2022-07-22 22:27:11,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:27:11,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498845334] [2022-07-22 22:27:11,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:27:11,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:27:11,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:11,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:27:11,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:11,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:27:11,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:11,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:27:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:11,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:27:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:11,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 22:27:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:11,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 22:27:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:11,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:27:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:11,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 22:27:11,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:11,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 22:27:11,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:11,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 22:27:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:11,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 22:27:11,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:12,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 22:27:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:12,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 22:27:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:12,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:27:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:12,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 22:27:12,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:12,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 22:27:12,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:12,035 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2022-07-22 22:27:12,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:27:12,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498845334] [2022-07-22 22:27:12,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498845334] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:27:12,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611956010] [2022-07-22 22:27:12,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:27:12,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:27:12,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:27:12,038 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:27:12,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 22:27:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:12,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 54 conjunts are in the unsatisfiable core [2022-07-22 22:27:12,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:27:12,279 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 22:27:12,280 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-22 22:27:12,293 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 22:27:12,293 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-22 22:27:13,353 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 105 proven. 17 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-22 22:27:13,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:27:13,756 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-07-22 22:27:13,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611956010] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:27:13,757 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 22:27:13,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 12] total 28 [2022-07-22 22:27:13,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437721525] [2022-07-22 22:27:13,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 22:27:13,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-22 22:27:13,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:27:13,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-22 22:27:13,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=658, Unknown=0, NotChecked=0, Total=756 [2022-07-22 22:27:13,760 INFO L87 Difference]: Start difference. First operand 169 states and 222 transitions. Second operand has 28 states, 28 states have (on average 3.7142857142857144) internal successors, (104), 26 states have internal predecessors, (104), 10 states have call successors, (33), 3 states have call predecessors, (33), 5 states have return successors, (33), 10 states have call predecessors, (33), 10 states have call successors, (33) [2022-07-22 22:27:15,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:27:15,512 INFO L93 Difference]: Finished difference Result 416 states and 579 transitions. [2022-07-22 22:27:15,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-22 22:27:15,513 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.7142857142857144) internal successors, (104), 26 states have internal predecessors, (104), 10 states have call successors, (33), 3 states have call predecessors, (33), 5 states have return successors, (33), 10 states have call predecessors, (33), 10 states have call successors, (33) Word has length 116 [2022-07-22 22:27:15,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:27:15,516 INFO L225 Difference]: With dead ends: 416 [2022-07-22 22:27:15,516 INFO L226 Difference]: Without dead ends: 295 [2022-07-22 22:27:15,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 244 SyntacticMatches, 11 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=327, Invalid=1743, Unknown=0, NotChecked=0, Total=2070 [2022-07-22 22:27:15,518 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 315 mSDsluCounter, 2296 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 2538 SdHoareTripleChecker+Invalid, 1713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 344 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 22:27:15,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 2538 Invalid, 1713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 1166 Invalid, 0 Unknown, 344 Unchecked, 0.9s Time] [2022-07-22 22:27:15,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-07-22 22:27:15,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 218. [2022-07-22 22:27:15,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 145 states have (on average 1.186206896551724) internal successors, (172), 149 states have internal predecessors, (172), 54 states have call successors, (54), 16 states have call predecessors, (54), 18 states have return successors, (67), 52 states have call predecessors, (67), 53 states have call successors, (67) [2022-07-22 22:27:15,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 293 transitions. [2022-07-22 22:27:15,541 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 293 transitions. Word has length 116 [2022-07-22 22:27:15,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:27:15,542 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 293 transitions. [2022-07-22 22:27:15,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.7142857142857144) internal successors, (104), 26 states have internal predecessors, (104), 10 states have call successors, (33), 3 states have call predecessors, (33), 5 states have return successors, (33), 10 states have call predecessors, (33), 10 states have call successors, (33) [2022-07-22 22:27:15,542 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 293 transitions. [2022-07-22 22:27:15,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-22 22:27:15,544 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:27:15,544 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:27:15,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 22:27:15,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:27:15,758 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:27:15,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:27:15,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1275142702, now seen corresponding path program 1 times [2022-07-22 22:27:15,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:27:15,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96018433] [2022-07-22 22:27:15,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:27:15,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:27:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:15,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:27:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:15,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:27:15,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:15,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:27:15,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:15,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:27:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:15,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 22:27:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:15,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 22:27:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:15,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:27:15,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:15,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 22:27:15,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:15,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 22:27:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:15,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 22:27:15,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:15,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 22:27:15,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:15,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 22:27:15,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:15,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 22:27:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:15,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:27:15,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:15,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 22:27:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:15,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 22:27:15,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:16,001 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-07-22 22:27:16,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:27:16,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96018433] [2022-07-22 22:27:16,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96018433] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:27:16,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783929267] [2022-07-22 22:27:16,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:27:16,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:27:16,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:27:16,004 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:27:16,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 22:27:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:16,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 22:27:16,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:27:16,259 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-07-22 22:27:16,275 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:27:16,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783929267] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:27:16,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:27:16,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2022-07-22 22:27:16,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160792741] [2022-07-22 22:27:16,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:27:16,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 22:27:16,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:27:16,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 22:27:16,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-22 22:27:16,277 INFO L87 Difference]: Start difference. First operand 218 states and 293 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-22 22:27:16,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:27:16,453 INFO L93 Difference]: Finished difference Result 403 states and 553 transitions. [2022-07-22 22:27:16,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 22:27:16,453 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 116 [2022-07-22 22:27:16,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:27:16,455 INFO L225 Difference]: With dead ends: 403 [2022-07-22 22:27:16,455 INFO L226 Difference]: Without dead ends: 226 [2022-07-22 22:27:16,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:27:16,457 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 227 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:27:16,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 592 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:27:16,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-07-22 22:27:16,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2022-07-22 22:27:16,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 152 states have (on average 1.2105263157894737) internal successors, (184), 156 states have internal predecessors, (184), 55 states have call successors, (55), 16 states have call predecessors, (55), 18 states have return successors, (69), 53 states have call predecessors, (69), 54 states have call successors, (69) [2022-07-22 22:27:16,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 308 transitions. [2022-07-22 22:27:16,473 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 308 transitions. Word has length 116 [2022-07-22 22:27:16,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:27:16,474 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 308 transitions. [2022-07-22 22:27:16,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-22 22:27:16,474 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 308 transitions. [2022-07-22 22:27:16,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-22 22:27:16,476 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:27:16,476 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:27:16,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 22:27:16,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:27:16,704 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:27:16,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:27:16,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1492302642, now seen corresponding path program 1 times [2022-07-22 22:27:16,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:27:16,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851431034] [2022-07-22 22:27:16,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:27:16,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:27:16,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:16,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:27:16,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:16,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:27:16,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:16,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 22:27:16,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:16,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:27:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:16,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 22:27:16,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:16,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 22:27:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:16,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:27:16,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:16,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 22:27:16,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:16,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 22:27:16,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:16,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 22:27:16,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:16,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 22:27:16,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:16,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 22:27:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:16,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 22:27:16,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:16,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:27:16,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:16,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:27:16,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:16,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 22:27:16,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:16,972 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2022-07-22 22:27:16,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:27:16,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851431034] [2022-07-22 22:27:16,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851431034] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:27:16,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758156440] [2022-07-22 22:27:16,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:27:16,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:27:16,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:27:16,976 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:27:16,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 22:27:17,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:27:17,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 57 conjunts are in the unsatisfiable core [2022-07-22 22:27:17,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:27:17,170 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:27:17,306 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-22 22:27:17,306 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-22 22:27:17,317 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-07-22 22:27:17,321 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-22 22:27:17,390 INFO L356 Elim1Store]: treesize reduction 38, result has 22.4 percent of original size [2022-07-22 22:27:17,391 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-07-22 22:27:17,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 22:27:17,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:27:17,608 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: |v_#memory_$Pointer$.base_45| input size 44 context size 44 output size 44 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:427) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:122) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:650) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:611) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:529) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:333) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:187) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:298) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:284) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:248) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:409) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:300) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:260) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:152) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-22 22:27:17,611 INFO L158 Benchmark]: Toolchain (without parser) took 12432.25ms. Allocated memory was 90.2MB in the beginning and 276.8MB in the end (delta: 186.6MB). Free memory was 49.8MB in the beginning and 166.1MB in the end (delta: -116.3MB). Peak memory consumption was 71.3MB. Max. memory is 16.1GB. [2022-07-22 22:27:17,611 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 90.2MB. Free memory is still 49.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 22:27:17,611 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1604.10ms. Allocated memory was 90.2MB in the beginning and 125.8MB in the end (delta: 35.7MB). Free memory was 49.6MB in the beginning and 50.7MB in the end (delta: -1.1MB). Peak memory consumption was 37.0MB. Max. memory is 16.1GB. [2022-07-22 22:27:17,611 INFO L158 Benchmark]: Boogie Procedure Inliner took 125.40ms. Allocated memory was 125.8MB in the beginning and 188.7MB in the end (delta: 62.9MB). Free memory was 50.7MB in the beginning and 144.0MB in the end (delta: -93.3MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2022-07-22 22:27:17,612 INFO L158 Benchmark]: Boogie Preprocessor took 84.75ms. Allocated memory is still 188.7MB. Free memory was 144.0MB in the beginning and 140.8MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-22 22:27:17,612 INFO L158 Benchmark]: RCFGBuilder took 682.61ms. Allocated memory is still 188.7MB. Free memory was 140.8MB in the beginning and 111.5MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-07-22 22:27:17,612 INFO L158 Benchmark]: TraceAbstraction took 9929.42ms. Allocated memory was 188.7MB in the beginning and 276.8MB in the end (delta: 88.1MB). Free memory was 111.5MB in the beginning and 166.1MB in the end (delta: -54.7MB). Peak memory consumption was 33.2MB. Max. memory is 16.1GB. [2022-07-22 22:27:17,613 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 90.2MB. Free memory is still 49.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1604.10ms. Allocated memory was 90.2MB in the beginning and 125.8MB in the end (delta: 35.7MB). Free memory was 49.6MB in the beginning and 50.7MB in the end (delta: -1.1MB). Peak memory consumption was 37.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 125.40ms. Allocated memory was 125.8MB in the beginning and 188.7MB in the end (delta: 62.9MB). Free memory was 50.7MB in the beginning and 144.0MB in the end (delta: -93.3MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 84.75ms. Allocated memory is still 188.7MB. Free memory was 144.0MB in the beginning and 140.8MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 682.61ms. Allocated memory is still 188.7MB. Free memory was 140.8MB in the beginning and 111.5MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 9929.42ms. Allocated memory was 188.7MB in the beginning and 276.8MB in the end (delta: 88.1MB). Free memory was 111.5MB in the beginning and 166.1MB in the end (delta: -54.7MB). Peak memory consumption was 33.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: |v_#memory_$Pointer$.base_45| input size 44 context size 44 output size 44 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: |v_#memory_$Pointer$.base_45| input size 44 context size 44 output size 44: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-07-22 22:27:17,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_linked_list_pop_back_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 bcbdd24aa3539f554995115754c17957131f4a70e9c01f3bd768b3e606eed4d4 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 22:27:19,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 22:27:19,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 22:27:19,563 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 22:27:19,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 22:27:19,565 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 22:27:19,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 22:27:19,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 22:27:19,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 22:27:19,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 22:27:19,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 22:27:19,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 22:27:19,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 22:27:19,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 22:27:19,588 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 22:27:19,589 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 22:27:19,589 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 22:27:19,590 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 22:27:19,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 22:27:19,592 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 22:27:19,595 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 22:27:19,600 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 22:27:19,602 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 22:27:19,603 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 22:27:19,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 22:27:19,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 22:27:19,617 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 22:27:19,617 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 22:27:19,618 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 22:27:19,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 22:27:19,619 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 22:27:19,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 22:27:19,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 22:27:19,622 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 22:27:19,623 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 22:27:19,624 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 22:27:19,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 22:27:19,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 22:27:19,625 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 22:27:19,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 22:27:19,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 22:27:19,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 22:27:19,628 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-22 22:27:19,659 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 22:27:19,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 22:27:19,660 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 22:27:19,661 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 22:27:19,661 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 22:27:19,661 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 22:27:19,662 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 22:27:19,662 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 22:27:19,662 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 22:27:19,663 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 22:27:19,664 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 22:27:19,664 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 22:27:19,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 22:27:19,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 22:27:19,664 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-22 22:27:19,665 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-22 22:27:19,665 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-22 22:27:19,665 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 22:27:19,665 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 22:27:19,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 22:27:19,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 22:27:19,666 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 22:27:19,666 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 22:27:19,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:27:19,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 22:27:19,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 22:27:19,667 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 22:27:19,667 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-22 22:27:19,667 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-22 22:27:19,667 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 22:27:19,667 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 22:27:19,668 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 22:27:19,668 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-22 22:27:19,668 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcbdd24aa3539f554995115754c17957131f4a70e9c01f3bd768b3e606eed4d4 [2022-07-22 22:27:19,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 22:27:20,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 22:27:20,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 22:27:20,004 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 22:27:20,004 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 22:27:20,006 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i [2022-07-22 22:27:20,059 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15443e356/5e82eea11b02425bab4aec0550bb251e/FLAG522cfed34 [2022-07-22 22:27:20,709 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 22:27:20,709 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i [2022-07-22 22:27:20,743 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15443e356/5e82eea11b02425bab4aec0550bb251e/FLAG522cfed34 [2022-07-22 22:27:21,085 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15443e356/5e82eea11b02425bab4aec0550bb251e [2022-07-22 22:27:21,087 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 22:27:21,088 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 22:27:21,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 22:27:21,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 22:27:21,092 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 22:27:21,093 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:27:21" (1/1) ... [2022-07-22 22:27:21,094 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c7886c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:27:21, skipping insertion in model container [2022-07-22 22:27:21,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:27:21" (1/1) ... [2022-07-22 22:27:21,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 22:27:21,186 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 22:27:21,445 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i[4498,4511] [2022-07-22 22:27:21,451 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_back_harness.i[4558,4571] [2022-07-22 22:27:22,121 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:22,124 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:22,125 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:22,126 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:22,127 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:22,138 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:22,138 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:22,142 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:22,142 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:22,145 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:22,147 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:22,148 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:22,149 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:27:22,364 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:27:22,365 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:27:22,366 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:27:22,367 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:27:22,368 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:27:22,368 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:27:22,369 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:27:22,369 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:27:22,370 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:27:22,371 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:27:22,460 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:27:22,473 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.ArithmeticException: BigInteger out of int range at java.base/java.math.BigInteger.intValueExact(BigInteger.java:4784) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.checkIfNecessaryMemoryModelAdaption(CHandler.java:1009) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:968) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:279) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1384) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:249) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.translateInitializer(CHandler.java:2978) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleIASTDeclarator(CHandler.java:2836) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2138) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:143) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1135) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:211) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1470) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2361) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:601) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-22 22:27:22,478 INFO L158 Benchmark]: Toolchain (without parser) took 1388.29ms. Allocated memory was 65.0MB in the beginning and 83.9MB in the end (delta: 18.9MB). Free memory was 38.0MB in the beginning and 50.0MB in the end (delta: -12.0MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. [2022-07-22 22:27:22,478 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 65.0MB. Free memory was 45.7MB in the beginning and 45.6MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 22:27:22,479 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1386.84ms. Allocated memory was 65.0MB in the beginning and 83.9MB in the end (delta: 18.9MB). Free memory was 37.8MB in the beginning and 50.0MB in the end (delta: -12.2MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. [2022-07-22 22:27:22,481 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 65.0MB. Free memory was 45.7MB in the beginning and 45.6MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1386.84ms. Allocated memory was 65.0MB in the beginning and 83.9MB in the end (delta: 18.9MB). Free memory was 37.8MB in the beginning and 50.0MB in the end (delta: -12.2MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: ArithmeticException: BigInteger out of int range de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: ArithmeticException: BigInteger out of int range: java.base/java.math.BigInteger.intValueExact(BigInteger.java:4784) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: ArithmeticException: BigInteger out of int range