./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/memset_override_0_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/memset_override_0_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 5db0d3c47797ff0a215821e8d5fa38ab9190be93d125d3ffd24136b371560f6c --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 10:18:01,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 10:18:01,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 10:18:01,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 10:18:01,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 10:18:01,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 10:18:01,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 10:18:01,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 10:18:01,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 10:18:01,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 10:18:01,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 10:18:01,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 10:18:01,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 10:18:01,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 10:18:01,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 10:18:01,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 10:18:01,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 10:18:01,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 10:18:01,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 10:18:01,712 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 10:18:01,716 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 10:18:01,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 10:18:01,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 10:18:01,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 10:18:01,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 10:18:01,722 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 10:18:01,722 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 10:18:01,723 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 10:18:01,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 10:18:01,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 10:18:01,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 10:18:01,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 10:18:01,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 10:18:01,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 10:18:01,728 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 10:18:01,728 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 10:18:01,729 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 10:18:01,729 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 10:18:01,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 10:18:01,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 10:18:01,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 10:18:01,731 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 10:18:01,751 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 10:18:01,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 10:18:01,752 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 10:18:01,752 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 10:18:01,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 10:18:01,753 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 10:18:01,753 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 10:18:01,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 10:18:01,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 10:18:01,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 10:18:01,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 10:18:01,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 10:18:01,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 10:18:01,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 10:18:01,755 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 10:18:01,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 10:18:01,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 10:18:01,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 10:18:01,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 10:18:01,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 10:18:01,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 10:18:01,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 10:18:01,756 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 10:18:01,756 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 10:18:01,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 10:18:01,756 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 10:18:01,756 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 10:18:01,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 10:18:01,757 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 10:18:01,757 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5db0d3c47797ff0a215821e8d5fa38ab9190be93d125d3ffd24136b371560f6c [2021-11-07 10:18:01,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 10:18:01,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 10:18:01,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 10:18:01,991 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 10:18:01,992 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 10:18:01,993 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2021-11-07 10:18:02,061 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/789468760/afff8aeb145b4e27afe8b67a9c03785f/FLAGd0460480d [2021-11-07 10:18:02,640 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 10:18:02,642 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2021-11-07 10:18:02,683 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/789468760/afff8aeb145b4e27afe8b67a9c03785f/FLAGd0460480d [2021-11-07 10:18:03,037 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/789468760/afff8aeb145b4e27afe8b67a9c03785f [2021-11-07 10:18:03,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 10:18:03,041 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 10:18:03,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 10:18:03,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 10:18:03,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 10:18:03,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:18:03" (1/1) ... [2021-11-07 10:18:03,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c1e6e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:18:03, skipping insertion in model container [2021-11-07 10:18:03,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:18:03" (1/1) ... [2021-11-07 10:18:03,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 10:18:03,113 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 10:18:03,326 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4491,4504] [2021-11-07 10:18:03,330 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4551,4564] [2021-11-07 10:18:03,340 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 10:18:03,343 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 10:18:03,735 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:03,736 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:03,736 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:03,737 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:03,738 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:03,748 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:03,750 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:03,751 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:03,752 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:03,753 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:03,753 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:03,754 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:03,754 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:03,864 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 10:18:03,865 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 10:18:03,866 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 10:18:03,867 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 10:18:03,868 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 10:18:03,869 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 10:18:03,870 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 10:18:03,870 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 10:18:03,871 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 10:18:03,871 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 10:18:03,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 10:18:03,931 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 10:18:03,939 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4491,4504] [2021-11-07 10:18:03,940 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4551,4564] [2021-11-07 10:18:03,941 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 10:18:03,955 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 10:18:03,980 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:03,981 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:03,981 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:03,982 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:03,982 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:03,987 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:03,988 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:03,989 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:03,989 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:03,990 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:03,990 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:03,991 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:03,991 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:04,006 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 10:18:04,017 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 10:18:04,018 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 10:18:04,019 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 10:18:04,021 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 10:18:04,022 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 10:18:04,022 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 10:18:04,023 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 10:18:04,024 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 10:18:04,024 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 10:18:04,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 10:18:04,176 INFO L208 MainTranslator]: Completed translation [2021-11-07 10:18:04,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:18:04 WrapperNode [2021-11-07 10:18:04,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 10:18:04,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 10:18:04,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 10:18:04,177 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 10:18:04,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:18:04" (1/1) ... [2021-11-07 10:18:04,229 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:18:04" (1/1) ... [2021-11-07 10:18:04,259 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 10:18:04,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 10:18:04,265 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 10:18:04,265 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 10:18:04,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:18:04" (1/1) ... [2021-11-07 10:18:04,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:18:04" (1/1) ... [2021-11-07 10:18:04,287 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:18:04" (1/1) ... [2021-11-07 10:18:04,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:18:04" (1/1) ... [2021-11-07 10:18:04,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:18:04" (1/1) ... [2021-11-07 10:18:04,319 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:18:04" (1/1) ... [2021-11-07 10:18:04,321 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:18:04" (1/1) ... [2021-11-07 10:18:04,331 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 10:18:04,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 10:18:04,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 10:18:04,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 10:18:04,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:18:04" (1/1) ... [2021-11-07 10:18:04,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 10:18:04,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:18:04,369 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 10:18:04,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 10:18:04,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 10:18:04,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 10:18:04,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 10:18:04,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 10:18:04,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 10:18:04,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 10:18:04,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 10:18:04,832 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 10:18:04,833 INFO L299 CfgBuilder]: Removed 44 assume(true) statements. [2021-11-07 10:18:04,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:18:04 BoogieIcfgContainer [2021-11-07 10:18:04,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 10:18:04,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 10:18:04,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 10:18:04,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 10:18:04,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 10:18:03" (1/3) ... [2021-11-07 10:18:04,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e8946d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:18:04, skipping insertion in model container [2021-11-07 10:18:04,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:18:04" (2/3) ... [2021-11-07 10:18:04,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e8946d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:18:04, skipping insertion in model container [2021-11-07 10:18:04,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:18:04" (3/3) ... [2021-11-07 10:18:04,847 INFO L111 eAbstractionObserver]: Analyzing ICFG memset_override_0_harness.i [2021-11-07 10:18:04,852 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 10:18:04,853 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-07 10:18:04,893 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 10:18:04,898 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 10:18:04,899 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-07 10:18:04,913 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 47 states have (on average 1.5106382978723405) internal successors, (71), 52 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:04,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 10:18:04,918 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:18:04,919 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:18:04,920 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 10:18:04,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:18:04,929 INFO L85 PathProgramCache]: Analyzing trace with hash -2009978325, now seen corresponding path program 1 times [2021-11-07 10:18:04,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:18:04,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919655824] [2021-11-07 10:18:04,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:18:04,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:18:05,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:18:05,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:18:05,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:18:05,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919655824] [2021-11-07 10:18:05,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919655824] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:18:05,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:18:05,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 10:18:05,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434439112] [2021-11-07 10:18:05,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:18:05,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 10:18:05,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:18:05,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 10:18:05,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 10:18:05,300 INFO L87 Difference]: Start difference. First operand has 53 states, 47 states have (on average 1.5106382978723405) internal successors, (71), 52 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:05,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:18:05,325 INFO L93 Difference]: Finished difference Result 103 states and 138 transitions. [2021-11-07 10:18:05,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 10:18:05,327 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-07 10:18:05,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:18:05,333 INFO L225 Difference]: With dead ends: 103 [2021-11-07 10:18:05,334 INFO L226 Difference]: Without dead ends: 47 [2021-11-07 10:18:05,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 10:18:05,342 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.43ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 10:18:05,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 2.43ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 10:18:05,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-07 10:18:05,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-11-07 10:18:05,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.1904761904761905) internal successors, (50), 46 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:05,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2021-11-07 10:18:05,381 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 16 [2021-11-07 10:18:05,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:18:05,382 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2021-11-07 10:18:05,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:05,383 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2021-11-07 10:18:05,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 10:18:05,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:18:05,387 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:18:05,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 10:18:05,388 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 10:18:05,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:18:05,391 INFO L85 PathProgramCache]: Analyzing trace with hash 329723105, now seen corresponding path program 1 times [2021-11-07 10:18:05,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:18:05,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818266674] [2021-11-07 10:18:05,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:18:05,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:18:05,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:18:05,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:18:05,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:18:05,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818266674] [2021-11-07 10:18:05,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818266674] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:18:05,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:18:05,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 10:18:05,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291433830] [2021-11-07 10:18:05,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:18:05,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 10:18:05,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:18:05,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 10:18:05,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 10:18:05,704 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:05,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:18:05,820 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2021-11-07 10:18:05,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 10:18:05,821 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-07 10:18:05,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:18:05,822 INFO L225 Difference]: With dead ends: 47 [2021-11-07 10:18:05,822 INFO L226 Difference]: Without dead ends: 45 [2021-11-07 10:18:05,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 73.73ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 10:18:05,824 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 70 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.07ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.79ms IncrementalHoareTripleChecker+Time [2021-11-07 10:18:05,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 118 Invalid, 39 Unknown, 0 Unchecked, 5.07ms Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 57.79ms Time] [2021-11-07 10:18:05,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-07 10:18:05,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-11-07 10:18:05,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 41 states have (on average 1.170731707317073) internal successors, (48), 44 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:05,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2021-11-07 10:18:05,829 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 16 [2021-11-07 10:18:05,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:18:05,829 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2021-11-07 10:18:05,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:05,830 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2021-11-07 10:18:05,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-07 10:18:05,830 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:18:05,830 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:18:05,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 10:18:05,831 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 10:18:05,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:18:05,832 INFO L85 PathProgramCache]: Analyzing trace with hash -963549789, now seen corresponding path program 1 times [2021-11-07 10:18:05,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:18:05,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944729240] [2021-11-07 10:18:05,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:18:05,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:18:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 10:18:05,881 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 10:18:05,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 10:18:05,972 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 10:18:05,973 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-07 10:18:05,974 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2021-11-07 10:18:05,975 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2021-11-07 10:18:05,975 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2021-11-07 10:18:05,975 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2021-11-07 10:18:05,976 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2021-11-07 10:18:05,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 10:18:05,978 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-07 10:18:05,980 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 10:18:06,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 10:18:06 BoogieIcfgContainer [2021-11-07 10:18:06,014 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 10:18:06,015 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 10:18:06,017 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 10:18:06,017 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 10:18:06,018 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:18:04" (3/4) ... [2021-11-07 10:18:06,021 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 10:18:06,021 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 10:18:06,022 INFO L158 Benchmark]: Toolchain (without parser) took 2980.61ms. Allocated memory was 90.2MB in the beginning and 151.0MB in the end (delta: 60.8MB). Free memory was 54.5MB in the beginning and 107.8MB in the end (delta: -53.4MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. [2021-11-07 10:18:06,022 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 90.2MB. Free memory was 49.6MB in the beginning and 49.6MB in the end (delta: 37.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-07 10:18:06,023 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1132.85ms. Allocated memory was 90.2MB in the beginning and 119.5MB in the end (delta: 29.4MB). Free memory was 54.3MB in the beginning and 80.7MB in the end (delta: -26.4MB). Peak memory consumption was 46.4MB. Max. memory is 16.1GB. [2021-11-07 10:18:06,027 INFO L158 Benchmark]: Boogie Procedure Inliner took 86.76ms. Allocated memory is still 119.5MB. Free memory was 80.7MB in the beginning and 75.9MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-07 10:18:06,030 INFO L158 Benchmark]: Boogie Preprocessor took 67.10ms. Allocated memory is still 119.5MB. Free memory was 75.9MB in the beginning and 73.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-07 10:18:06,031 INFO L158 Benchmark]: RCFGBuilder took 503.81ms. Allocated memory is still 119.5MB. Free memory was 73.8MB in the beginning and 57.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-07 10:18:06,031 INFO L158 Benchmark]: TraceAbstraction took 1176.66ms. Allocated memory was 119.5MB in the beginning and 151.0MB in the end (delta: 31.5MB). Free memory was 56.2MB in the beginning and 107.8MB in the end (delta: -51.6MB). Peak memory consumption was 25.8MB. Max. memory is 16.1GB. [2021-11-07 10:18:06,031 INFO L158 Benchmark]: Witness Printer took 6.26ms. Allocated memory is still 151.0MB. Free memory is still 107.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-07 10:18:06,037 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 90.2MB. Free memory was 49.6MB in the beginning and 49.6MB in the end (delta: 37.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1132.85ms. Allocated memory was 90.2MB in the beginning and 119.5MB in the end (delta: 29.4MB). Free memory was 54.3MB in the beginning and 80.7MB in the end (delta: -26.4MB). Peak memory consumption was 46.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 86.76ms. Allocated memory is still 119.5MB. Free memory was 80.7MB in the beginning and 75.9MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.10ms. Allocated memory is still 119.5MB. Free memory was 75.9MB in the beginning and 73.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 503.81ms. Allocated memory is still 119.5MB. Free memory was 73.8MB in the beginning and 57.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1176.66ms. Allocated memory was 119.5MB in the beginning and 151.0MB in the end (delta: 31.5MB). Free memory was 56.2MB in the beginning and 107.8MB in the end (delta: -51.6MB). Peak memory consumption was 25.8MB. Max. memory is 16.1GB. * Witness Printer took 6.26ms. Allocated memory is still 151.0MB. Free memory is still 107.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 5885. Possible FailurePath: [L5906] short d1[160]; [L5907] short d2[160]; [L5908] int c = __VERIFIER_nondet_int(); [L211] COND FALSE !(!cond) [L5911] unsigned size = __VERIFIER_nondet_uint(); [L211] COND FALSE !(!cond) [L211] COND FALSE !(!cond) [L211] COND FALSE !(!cond) [L5871] COND FALSE !(n > 0) [L5876] return s; [L211] COND FALSE !(!cond) [L223] COND FALSE !(!cond) [L5884] size_t num_uint64s = n >> 3; [L5885] size_t rem = n & 0x7; [L223] COND TRUE !cond [L223] reach_error() - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 53 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 1088.04ms, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 15.11ms, AutomataDifference: 203.46ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 8.56ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 70 SdHoareTripleChecker+Valid, 57.79ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 70 mSDsluCounter, 175 SdHoareTripleChecker+Invalid, 46.25ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 76 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 39 IncrementalHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 99 mSDtfsCounter, 39 mSolverCounterSat, 7.50ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 73.77ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 26.78ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 24.13ms SsaConstructionTime, 179.10ms SatisfiabilityAnalysisTime, 296.95ms InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 75 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-07 10:18:06,072 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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/memset_override_0_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 5db0d3c47797ff0a215821e8d5fa38ab9190be93d125d3ffd24136b371560f6c --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 10:18:08,324 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 10:18:08,328 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 10:18:08,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 10:18:08,371 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 10:18:08,375 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 10:18:08,377 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 10:18:08,383 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 10:18:08,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 10:18:08,391 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 10:18:08,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 10:18:08,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 10:18:08,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 10:18:08,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 10:18:08,403 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 10:18:08,407 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 10:18:08,408 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 10:18:08,409 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 10:18:08,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 10:18:08,419 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 10:18:08,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 10:18:08,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 10:18:08,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 10:18:08,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 10:18:08,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 10:18:08,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 10:18:08,434 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 10:18:08,435 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 10:18:08,435 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 10:18:08,436 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 10:18:08,437 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 10:18:08,437 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 10:18:08,439 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 10:18:08,440 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 10:18:08,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 10:18:08,441 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 10:18:08,442 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 10:18:08,442 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 10:18:08,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 10:18:08,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 10:18:08,445 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 10:18:08,446 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-07 10:18:08,488 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 10:18:08,489 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 10:18:08,490 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 10:18:08,490 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 10:18:08,493 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 10:18:08,493 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 10:18:08,493 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 10:18:08,493 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 10:18:08,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 10:18:08,494 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 10:18:08,495 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 10:18:08,495 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 10:18:08,495 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 10:18:08,495 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 10:18:08,495 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 10:18:08,496 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 10:18:08,496 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 10:18:08,496 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 10:18:08,496 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 10:18:08,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 10:18:08,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 10:18:08,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 10:18:08,497 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 10:18:08,497 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 10:18:08,497 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-07 10:18:08,503 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 10:18:08,503 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 10:18:08,504 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 10:18:08,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 10:18:08,504 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 10:18:08,504 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 10:18:08,504 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5db0d3c47797ff0a215821e8d5fa38ab9190be93d125d3ffd24136b371560f6c [2021-11-07 10:18:08,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 10:18:08,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 10:18:08,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 10:18:08,891 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 10:18:08,892 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 10:18:08,893 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2021-11-07 10:18:08,962 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9faadeba8/f2a3db49584e44e2b9f94dfe11d4c144/FLAGc97809775 [2021-11-07 10:18:09,492 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 10:18:09,493 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2021-11-07 10:18:09,515 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9faadeba8/f2a3db49584e44e2b9f94dfe11d4c144/FLAGc97809775 [2021-11-07 10:18:09,774 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9faadeba8/f2a3db49584e44e2b9f94dfe11d4c144 [2021-11-07 10:18:09,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 10:18:09,779 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 10:18:09,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 10:18:09,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 10:18:09,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 10:18:09,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:18:09" (1/1) ... [2021-11-07 10:18:09,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39062973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:18:09, skipping insertion in model container [2021-11-07 10:18:09,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:18:09" (1/1) ... [2021-11-07 10:18:09,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 10:18:09,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 10:18:10,113 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4491,4504] [2021-11-07 10:18:10,118 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4551,4564] [2021-11-07 10:18:10,132 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 10:18:10,136 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 10:18:10,726 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:10,730 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:10,731 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:10,734 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:10,735 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:10,746 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:10,746 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:10,747 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:10,748 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:10,749 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:10,749 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:10,750 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:10,750 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:10,900 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 10:18:10,901 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 10:18:10,938 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 10:18:10,939 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 10:18:10,940 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 10:18:10,940 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 10:18:10,941 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 10:18:10,941 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 10:18:10,941 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 10:18:10,942 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 10:18:10,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 10:18:11,005 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 10:18:11,015 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4491,4504] [2021-11-07 10:18:11,016 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4551,4564] [2021-11-07 10:18:11,017 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 10:18:11,018 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 10:18:11,082 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:11,083 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:11,083 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:11,084 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:11,084 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:11,093 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:11,106 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:11,108 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:11,108 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:11,109 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:11,110 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:11,110 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:11,111 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 10:18:11,131 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 10:18:11,152 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 10:18:11,155 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 10:18:11,156 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 10:18:11,157 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 10:18:11,158 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 10:18:11,159 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 10:18:11,160 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 10:18:11,160 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 10:18:11,161 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 10:18:11,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 10:18:11,373 INFO L208 MainTranslator]: Completed translation [2021-11-07 10:18:11,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:18:11 WrapperNode [2021-11-07 10:18:11,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 10:18:11,375 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 10:18:11,375 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 10:18:11,375 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 10:18:11,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:18:11" (1/1) ... [2021-11-07 10:18:11,448 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:18:11" (1/1) ... [2021-11-07 10:18:11,499 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 10:18:11,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 10:18:11,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 10:18:11,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 10:18:11,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:18:11" (1/1) ... [2021-11-07 10:18:11,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:18:11" (1/1) ... [2021-11-07 10:18:11,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:18:11" (1/1) ... [2021-11-07 10:18:11,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:18:11" (1/1) ... [2021-11-07 10:18:11,531 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:18:11" (1/1) ... [2021-11-07 10:18:11,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:18:11" (1/1) ... [2021-11-07 10:18:11,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:18:11" (1/1) ... [2021-11-07 10:18:11,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 10:18:11,566 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 10:18:11,566 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 10:18:11,566 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 10:18:11,567 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:18:11" (1/1) ... [2021-11-07 10:18:11,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 10:18:11,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:18:11,597 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 10:18:11,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 10:18:11,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 10:18:11,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 10:18:11,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 10:18:11,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 10:18:11,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 10:18:11,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 10:18:11,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 10:18:11,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 10:18:12,132 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 10:18:12,132 INFO L299 CfgBuilder]: Removed 44 assume(true) statements. [2021-11-07 10:18:12,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:18:12 BoogieIcfgContainer [2021-11-07 10:18:12,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 10:18:12,135 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 10:18:12,135 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 10:18:12,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 10:18:12,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 10:18:09" (1/3) ... [2021-11-07 10:18:12,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29de1493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:18:12, skipping insertion in model container [2021-11-07 10:18:12,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:18:11" (2/3) ... [2021-11-07 10:18:12,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29de1493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:18:12, skipping insertion in model container [2021-11-07 10:18:12,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:18:12" (3/3) ... [2021-11-07 10:18:12,158 INFO L111 eAbstractionObserver]: Analyzing ICFG memset_override_0_harness.i [2021-11-07 10:18:12,163 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 10:18:12,163 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-07 10:18:12,201 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 10:18:12,207 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 10:18:12,208 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-07 10:18:12,223 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 47 states have (on average 1.5106382978723405) internal successors, (71), 52 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:12,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 10:18:12,228 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:18:12,229 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:18:12,230 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 10:18:12,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:18:12,240 INFO L85 PathProgramCache]: Analyzing trace with hash -2009978325, now seen corresponding path program 1 times [2021-11-07 10:18:12,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 10:18:12,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1489025433] [2021-11-07 10:18:12,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:18:12,256 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 10:18:12,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 10:18:12,259 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 10:18:12,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 10:18:12,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:18:12,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 10:18:12,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:18:12,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:18:12,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 10:18:12,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:18:12,525 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 10:18:12,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1489025433] [2021-11-07 10:18:12,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1489025433] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 10:18:12,526 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:18:12,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 10:18:12,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082324331] [2021-11-07 10:18:12,529 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 10:18:12,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 10:18:12,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 10:18:12,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 10:18:12,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 10:18:12,557 INFO L87 Difference]: Start difference. First operand has 53 states, 47 states have (on average 1.5106382978723405) internal successors, (71), 52 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:12,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:18:12,577 INFO L93 Difference]: Finished difference Result 103 states and 138 transitions. [2021-11-07 10:18:12,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 10:18:12,580 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-07 10:18:12,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:18:12,586 INFO L225 Difference]: With dead ends: 103 [2021-11-07 10:18:12,586 INFO L226 Difference]: Without dead ends: 47 [2021-11-07 10:18:12,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.14ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 10:18:12,593 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.01ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 10:18:12,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 1.01ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 10:18:12,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-07 10:18:12,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-11-07 10:18:12,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.1904761904761905) internal successors, (50), 46 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:12,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2021-11-07 10:18:12,629 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 16 [2021-11-07 10:18:12,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:18:12,630 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2021-11-07 10:18:12,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:12,631 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2021-11-07 10:18:12,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 10:18:12,635 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:18:12,635 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:18:12,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 10:18:12,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 10:18:12,841 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 10:18:12,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:18:12,842 INFO L85 PathProgramCache]: Analyzing trace with hash 329723105, now seen corresponding path program 1 times [2021-11-07 10:18:12,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 10:18:12,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1368026718] [2021-11-07 10:18:12,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:18:12,843 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 10:18:12,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 10:18:12,845 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 10:18:12,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 10:18:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:18:12,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 10:18:12,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:18:13,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:18:13,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 10:18:13,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:18:13,222 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 10:18:13,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1368026718] [2021-11-07 10:18:13,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1368026718] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 10:18:13,224 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:18:13,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-07 10:18:13,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329831135] [2021-11-07 10:18:13,226 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 10:18:13,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 10:18:13,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 10:18:13,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 10:18:13,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 10:18:13,231 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:13,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:18:13,363 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2021-11-07 10:18:13,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 10:18:13,364 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-07 10:18:13,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:18:13,365 INFO L225 Difference]: With dead ends: 47 [2021-11-07 10:18:13,365 INFO L226 Difference]: Without dead ends: 45 [2021-11-07 10:18:13,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.35ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-07 10:18:13,367 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 128 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.62ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.72ms IncrementalHoareTripleChecker+Time [2021-11-07 10:18:13,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 136 Invalid, 54 Unknown, 0 Unchecked, 6.62ms Time], IncrementalHoareTripleChecker [4 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 64.72ms Time] [2021-11-07 10:18:13,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-07 10:18:13,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-11-07 10:18:13,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 41 states have (on average 1.170731707317073) internal successors, (48), 44 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:13,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2021-11-07 10:18:13,381 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 16 [2021-11-07 10:18:13,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:18:13,381 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2021-11-07 10:18:13,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:13,382 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2021-11-07 10:18:13,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-07 10:18:13,383 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:18:13,383 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:18:13,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-07 10:18:13,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 10:18:13,593 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 10:18:13,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:18:13,594 INFO L85 PathProgramCache]: Analyzing trace with hash -963549789, now seen corresponding path program 1 times [2021-11-07 10:18:13,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 10:18:13,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1529132491] [2021-11-07 10:18:13,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:18:13,595 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 10:18:13,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 10:18:13,598 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 10:18:13,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 10:18:13,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:18:13,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 10:18:13,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:18:13,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:18:13,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 10:18:14,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:18:14,065 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 10:18:14,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1529132491] [2021-11-07 10:18:14,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1529132491] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 10:18:14,066 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:18:14,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-07 10:18:14,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072979773] [2021-11-07 10:18:14,066 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 10:18:14,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 10:18:14,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 10:18:14,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 10:18:14,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-07 10:18:14,068 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:14,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:18:14,180 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2021-11-07 10:18:14,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 10:18:14,195 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-07 10:18:14,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:18:14,196 INFO L225 Difference]: With dead ends: 45 [2021-11-07 10:18:14,196 INFO L226 Difference]: Without dead ends: 43 [2021-11-07 10:18:14,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 174.76ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-07 10:18:14,197 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 38 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.64ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 54.66ms IncrementalHoareTripleChecker+Time [2021-11-07 10:18:14,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 183 Invalid, 53 Unknown, 0 Unchecked, 1.64ms Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 8 Unchecked, 54.66ms Time] [2021-11-07 10:18:14,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-07 10:18:14,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-11-07 10:18:14,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 40 states have (on average 1.15) internal successors, (46), 42 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:14,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2021-11-07 10:18:14,203 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 18 [2021-11-07 10:18:14,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:18:14,204 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2021-11-07 10:18:14,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:14,204 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2021-11-07 10:18:14,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 10:18:14,205 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:18:14,205 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:18:14,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 10:18:14,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 10:18:14,418 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 10:18:14,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:18:14,418 INFO L85 PathProgramCache]: Analyzing trace with hash -59070895, now seen corresponding path program 1 times [2021-11-07 10:18:14,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 10:18:14,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1596379414] [2021-11-07 10:18:14,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:18:14,420 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 10:18:14,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 10:18:14,436 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 10:18:14,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 10:18:14,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:18:14,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 10:18:14,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:18:14,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:18:14,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 10:18:14,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:18:14,873 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 10:18:14,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1596379414] [2021-11-07 10:18:14,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1596379414] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 10:18:14,874 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:18:14,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 10:18:14,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58717731] [2021-11-07 10:18:14,874 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 10:18:14,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 10:18:14,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 10:18:14,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 10:18:14,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:18:14,876 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:14,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:18:14,940 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2021-11-07 10:18:14,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 10:18:14,941 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-07 10:18:14,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:18:14,942 INFO L225 Difference]: With dead ends: 48 [2021-11-07 10:18:14,942 INFO L226 Difference]: Without dead ends: 46 [2021-11-07 10:18:14,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.36ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 10:18:14,943 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 47 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.63ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.11ms IncrementalHoareTripleChecker+Time [2021-11-07 10:18:14,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 83 Invalid, 29 Unknown, 0 Unchecked, 0.63ms Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 36.11ms Time] [2021-11-07 10:18:14,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-07 10:18:14,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2021-11-07 10:18:14,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 40 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:14,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2021-11-07 10:18:14,947 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 23 [2021-11-07 10:18:14,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:18:14,948 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2021-11-07 10:18:14,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:14,948 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2021-11-07 10:18:14,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-07 10:18:14,949 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:18:14,949 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:18:14,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 10:18:15,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 10:18:15,162 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 10:18:15,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:18:15,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1945883960, now seen corresponding path program 1 times [2021-11-07 10:18:15,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 10:18:15,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1564320634] [2021-11-07 10:18:15,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:18:15,164 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 10:18:15,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 10:18:15,165 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 10:18:15,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 10:18:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:18:15,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 10:18:15,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:18:15,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:18:15,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 10:18:15,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:18:15,609 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 10:18:15,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1564320634] [2021-11-07 10:18:15,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1564320634] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 10:18:15,610 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:18:15,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 5] imperfect sequences [] total 11 [2021-11-07 10:18:15,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343313676] [2021-11-07 10:18:15,610 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 10:18:15,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 10:18:15,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 10:18:15,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 10:18:15,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-07 10:18:15,612 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:15,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:18:15,901 INFO L93 Difference]: Finished difference Result 78 states and 81 transitions. [2021-11-07 10:18:15,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 10:18:15,902 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-07 10:18:15,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:18:15,903 INFO L225 Difference]: With dead ends: 78 [2021-11-07 10:18:15,903 INFO L226 Difference]: Without dead ends: 63 [2021-11-07 10:18:15,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 309.51ms TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-07 10:18:15,904 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 172 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 83.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.48ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 98.65ms IncrementalHoareTripleChecker+Time [2021-11-07 10:18:15,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 175 Invalid, 88 Unknown, 0 Unchecked, 1.48ms Time], IncrementalHoareTripleChecker [5 Valid, 82 Invalid, 0 Unknown, 1 Unchecked, 98.65ms Time] [2021-11-07 10:18:15,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-11-07 10:18:15,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 55. [2021-11-07 10:18:15,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 53 states have (on average 1.1132075471698113) internal successors, (59), 54 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:15,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2021-11-07 10:18:15,912 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 28 [2021-11-07 10:18:15,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:18:15,912 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2021-11-07 10:18:15,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:15,912 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2021-11-07 10:18:15,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-07 10:18:15,913 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:18:15,913 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:18:15,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-07 10:18:16,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 10:18:16,128 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 10:18:16,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:18:16,129 INFO L85 PathProgramCache]: Analyzing trace with hash -20878187, now seen corresponding path program 1 times [2021-11-07 10:18:16,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 10:18:16,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345419784] [2021-11-07 10:18:16,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:18:16,130 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 10:18:16,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 10:18:16,131 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 10:18:16,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 10:18:16,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:18:16,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 10:18:16,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:18:16,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:18:16,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 10:18:16,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:18:16,585 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 10:18:16,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1345419784] [2021-11-07 10:18:16,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1345419784] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 10:18:16,585 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:18:16,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 3] imperfect sequences [] total 9 [2021-11-07 10:18:16,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64799018] [2021-11-07 10:18:16,586 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 10:18:16,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 10:18:16,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 10:18:16,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 10:18:16,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-07 10:18:16,587 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:16,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:18:16,718 INFO L93 Difference]: Finished difference Result 85 states and 91 transitions. [2021-11-07 10:18:16,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 10:18:16,718 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-07 10:18:16,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:18:16,719 INFO L225 Difference]: With dead ends: 85 [2021-11-07 10:18:16,719 INFO L226 Difference]: Without dead ends: 56 [2021-11-07 10:18:16,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 214.58ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-07 10:18:16,720 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 5 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.83ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 49.61ms IncrementalHoareTripleChecker+Time [2021-11-07 10:18:16,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 198 Invalid, 50 Unknown, 0 Unchecked, 0.83ms Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 15 Unchecked, 49.61ms Time] [2021-11-07 10:18:16,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-07 10:18:16,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-11-07 10:18:16,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 54 states have (on average 1.1111111111111112) internal successors, (60), 55 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:16,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2021-11-07 10:18:16,726 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 29 [2021-11-07 10:18:16,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:18:16,726 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2021-11-07 10:18:16,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:16,727 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2021-11-07 10:18:16,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 10:18:16,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:18:16,728 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:18:16,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-07 10:18:16,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 10:18:16,943 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 10:18:16,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:18:16,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1012014150, now seen corresponding path program 1 times [2021-11-07 10:18:16,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 10:18:16,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [28974263] [2021-11-07 10:18:16,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:18:16,945 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 10:18:16,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 10:18:16,946 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 10:18:16,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 10:18:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:18:17,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 10:18:17,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:18:17,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:18:17,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 10:18:17,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:18:17,317 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 10:18:17,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [28974263] [2021-11-07 10:18:17,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [28974263] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 10:18:17,318 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:18:17,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 5] imperfect sequences [] total 11 [2021-11-07 10:18:17,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338226916] [2021-11-07 10:18:17,318 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 10:18:17,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 10:18:17,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 10:18:17,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 10:18:17,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-07 10:18:17,319 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:17,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:18:17,524 INFO L93 Difference]: Finished difference Result 64 states and 67 transitions. [2021-11-07 10:18:17,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 10:18:17,526 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-07 10:18:17,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:18:17,526 INFO L225 Difference]: With dead ends: 64 [2021-11-07 10:18:17,526 INFO L226 Difference]: Without dead ends: 42 [2021-11-07 10:18:17,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 221.49ms TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-07 10:18:17,527 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 87 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.81ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 85.07ms IncrementalHoareTripleChecker+Time [2021-11-07 10:18:17,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 146 Invalid, 92 Unknown, 0 Unchecked, 0.81ms Time], IncrementalHoareTripleChecker [6 Valid, 71 Invalid, 0 Unknown, 15 Unchecked, 85.07ms Time] [2021-11-07 10:18:17,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-07 10:18:17,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-11-07 10:18:17,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 40 states have (on average 1.1) internal successors, (44), 41 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:17,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2021-11-07 10:18:17,530 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 30 [2021-11-07 10:18:17,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:18:17,530 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2021-11-07 10:18:17,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:17,530 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2021-11-07 10:18:17,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 10:18:17,530 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:18:17,531 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:18:17,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 10:18:17,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 10:18:17,746 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 10:18:17,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:18:17,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1013503085, now seen corresponding path program 1 times [2021-11-07 10:18:17,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 10:18:17,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [30758072] [2021-11-07 10:18:17,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:18:17,748 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 10:18:17,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 10:18:17,749 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 10:18:17,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 10:18:17,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:18:17,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 10:18:17,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:18:18,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:18:18,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 10:18:18,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:18:18,401 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 10:18:18,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [30758072] [2021-11-07 10:18:18,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [30758072] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 10:18:18,401 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 10:18:18,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2021-11-07 10:18:18,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259985677] [2021-11-07 10:18:18,401 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 10:18:18,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 10:18:18,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 10:18:18,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 10:18:18,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-11-07 10:18:18,403 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:18,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:18:18,518 INFO L93 Difference]: Finished difference Result 75 states and 80 transitions. [2021-11-07 10:18:18,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 10:18:18,519 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-07 10:18:18,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:18:18,520 INFO L225 Difference]: With dead ends: 75 [2021-11-07 10:18:18,520 INFO L226 Difference]: Without dead ends: 46 [2021-11-07 10:18:18,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 327.27ms TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2021-11-07 10:18:18,520 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 6 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.54ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 45.07ms IncrementalHoareTripleChecker+Time [2021-11-07 10:18:18,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 224 Invalid, 54 Unknown, 0 Unchecked, 0.54ms Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 6 Unchecked, 45.07ms Time] [2021-11-07 10:18:18,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-07 10:18:18,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-11-07 10:18:18,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 44 states have (on average 1.0909090909090908) internal successors, (48), 45 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:18,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2021-11-07 10:18:18,523 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 31 [2021-11-07 10:18:18,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:18:18,523 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2021-11-07 10:18:18,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:18,524 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2021-11-07 10:18:18,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-07 10:18:18,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:18:18,524 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 10:18:18,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-07 10:18:18,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 10:18:18,732 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 10:18:18,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:18:18,732 INFO L85 PathProgramCache]: Analyzing trace with hash 2142974735, now seen corresponding path program 2 times [2021-11-07 10:18:18,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 10:18:18,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94686307] [2021-11-07 10:18:18,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 10:18:18,733 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 10:18:18,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 10:18:18,734 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 10:18:18,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 10:18:18,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 10:18:18,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 10:18:18,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-07 10:18:18,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:18:19,412 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 10:18:19,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 10:18:19,655 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 10:18:19,655 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 10:18:19,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94686307] [2021-11-07 10:18:19,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [94686307] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 10:18:19,655 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:18:19,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 9] imperfect sequences [] total 18 [2021-11-07 10:18:19,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806352603] [2021-11-07 10:18:19,656 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 10:18:19,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 10:18:19,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 10:18:19,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 10:18:19,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-11-07 10:18:19,662 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:19,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:18:19,861 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2021-11-07 10:18:19,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 10:18:19,862 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-07 10:18:19,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:18:19,862 INFO L225 Difference]: With dead ends: 66 [2021-11-07 10:18:19,862 INFO L226 Difference]: Without dead ends: 47 [2021-11-07 10:18:19,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 520.56ms TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2021-11-07 10:18:19,863 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 51 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.15ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 82.19ms IncrementalHoareTripleChecker+Time [2021-11-07 10:18:19,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 275 Invalid, 79 Unknown, 0 Unchecked, 1.15ms Time], IncrementalHoareTripleChecker [6 Valid, 53 Invalid, 0 Unknown, 20 Unchecked, 82.19ms Time] [2021-11-07 10:18:19,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-07 10:18:19,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-11-07 10:18:19,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 45 states have (on average 1.0888888888888888) internal successors, (49), 46 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:19,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2021-11-07 10:18:19,867 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 35 [2021-11-07 10:18:19,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:18:19,867 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2021-11-07 10:18:19,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:19,870 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2021-11-07 10:18:19,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-07 10:18:19,872 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:18:19,873 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 10:18:19,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 10:18:20,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 10:18:20,074 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 10:18:20,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:18:20,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1210339247, now seen corresponding path program 1 times [2021-11-07 10:18:20,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 10:18:20,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1190367222] [2021-11-07 10:18:20,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:18:20,075 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 10:18:20,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 10:18:20,082 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 10:18:20,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 10:18:20,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:18:20,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-07 10:18:20,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:18:20,688 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 10:18:20,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 10:18:21,279 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 10:18:21,280 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 10:18:21,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1190367222] [2021-11-07 10:18:21,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1190367222] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 10:18:21,280 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 10:18:21,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-11-07 10:18:21,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639984336] [2021-11-07 10:18:21,281 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 10:18:21,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 10:18:21,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 10:18:21,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 10:18:21,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-11-07 10:18:21,282 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:22,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:18:22,145 INFO L93 Difference]: Finished difference Result 85 states and 92 transitions. [2021-11-07 10:18:22,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-07 10:18:22,145 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-07 10:18:22,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:18:22,146 INFO L225 Difference]: With dead ends: 85 [2021-11-07 10:18:22,146 INFO L226 Difference]: Without dead ends: 55 [2021-11-07 10:18:22,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1476.60ms TimeCoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2021-11-07 10:18:22,147 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 7 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.18ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 74.71ms IncrementalHoareTripleChecker+Time [2021-11-07 10:18:22,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 338 Invalid, 75 Unknown, 0 Unchecked, 1.18ms Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 24 Unchecked, 74.71ms Time] [2021-11-07 10:18:22,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-11-07 10:18:22,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-11-07 10:18:22,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 54 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:22,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2021-11-07 10:18:22,153 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 37 [2021-11-07 10:18:22,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:18:22,153 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2021-11-07 10:18:22,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:22,153 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2021-11-07 10:18:22,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 10:18:22,154 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:18:22,154 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:18:22,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 10:18:22,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 10:18:22,355 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 10:18:22,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:18:22,355 INFO L85 PathProgramCache]: Analyzing trace with hash -219084983, now seen corresponding path program 2 times [2021-11-07 10:18:22,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 10:18:22,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [379666171] [2021-11-07 10:18:22,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 10:18:22,356 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 10:18:22,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 10:18:22,358 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 10:18:22,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 10:18:22,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 10:18:22,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 10:18:22,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 10:18:22,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:18:23,519 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 10:18:23,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 10:18:24,674 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 10:18:24,674 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 10:18:24,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [379666171] [2021-11-07 10:18:24,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [379666171] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 10:18:24,674 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 10:18:24,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 26 [2021-11-07 10:18:24,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396056237] [2021-11-07 10:18:24,675 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 10:18:24,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-07 10:18:24,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 10:18:24,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-07 10:18:24,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2021-11-07 10:18:24,676 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 26 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:24,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:18:24,909 INFO L93 Difference]: Finished difference Result 87 states and 91 transitions. [2021-11-07 10:18:24,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 10:18:24,910 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 26 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-07 10:18:24,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:18:24,911 INFO L225 Difference]: With dead ends: 87 [2021-11-07 10:18:24,911 INFO L226 Difference]: Without dead ends: 57 [2021-11-07 10:18:24,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1597.49ms TimeCoverageRelationStatistics Valid=135, Invalid=677, Unknown=0, NotChecked=0, Total=812 [2021-11-07 10:18:24,915 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 6 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 85.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.26ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 99.29ms IncrementalHoareTripleChecker+Time [2021-11-07 10:18:24,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 508 Invalid, 97 Unknown, 0 Unchecked, 1.26ms Time], IncrementalHoareTripleChecker [5 Valid, 60 Invalid, 0 Unknown, 32 Unchecked, 99.29ms Time] [2021-11-07 10:18:24,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-07 10:18:24,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-11-07 10:18:24,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 55 states have (on average 1.0727272727272728) internal successors, (59), 56 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:24,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2021-11-07 10:18:24,921 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 45 [2021-11-07 10:18:24,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:18:24,922 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2021-11-07 10:18:24,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 26 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:18:24,922 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2021-11-07 10:18:24,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-07 10:18:24,922 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:18:24,923 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:18:24,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 10:18:25,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 10:18:25,136 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 10:18:25,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:18:25,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1995109817, now seen corresponding path program 3 times [2021-11-07 10:18:25,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 10:18:25,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2104194031] [2021-11-07 10:18:25,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 10:18:25,137 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 10:18:25,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 10:18:25,147 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 10:18:25,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 10:18:25,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-07 10:18:25,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-11-07 10:18:25,925 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 10:18:26,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 10:18:26,542 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-07 10:18:26,543 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-07 10:18:26,543 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2021-11-07 10:18:26,544 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2021-11-07 10:18:26,545 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2021-11-07 10:18:26,545 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2021-11-07 10:18:26,545 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2021-11-07 10:18:26,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 10:18:26,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 10:18:26,748 INFO L732 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:18:26,750 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 10:18:26,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 10:18:26 BoogieIcfgContainer [2021-11-07 10:18:26,806 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 10:18:26,807 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 10:18:26,807 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 10:18:26,807 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 10:18:26,807 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:18:12" (3/4) ... [2021-11-07 10:18:26,809 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-07 10:18:26,879 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-11-07 10:18:26,880 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 10:18:26,880 INFO L158 Benchmark]: Toolchain (without parser) took 17101.37ms. Allocated memory was 54.5MB in the beginning and 157.3MB in the end (delta: 102.8MB). Free memory was 26.3MB in the beginning and 118.1MB in the end (delta: -91.8MB). Peak memory consumption was 86.4MB. Max. memory is 16.1GB. [2021-11-07 10:18:26,880 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 54.5MB. Free memory is still 36.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-07 10:18:26,881 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1592.09ms. Allocated memory was 54.5MB in the beginning and 86.0MB in the end (delta: 31.5MB). Free memory was 26.1MB in the beginning and 48.7MB in the end (delta: -22.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-11-07 10:18:26,881 INFO L158 Benchmark]: Boogie Procedure Inliner took 125.24ms. Allocated memory is still 86.0MB. Free memory was 48.7MB in the beginning and 43.7MB in the end (delta: 5.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-07 10:18:26,881 INFO L158 Benchmark]: Boogie Preprocessor took 64.70ms. Allocated memory is still 86.0MB. Free memory was 43.7MB in the beginning and 40.8MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-07 10:18:26,882 INFO L158 Benchmark]: RCFGBuilder took 568.18ms. Allocated memory is still 86.0MB. Free memory was 40.8MB in the beginning and 41.5MB in the end (delta: -756.5kB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. [2021-11-07 10:18:26,882 INFO L158 Benchmark]: TraceAbstraction took 14670.92ms. Allocated memory was 86.0MB in the beginning and 157.3MB in the end (delta: 71.3MB). Free memory was 41.1MB in the beginning and 44.2MB in the end (delta: -3.2MB). Peak memory consumption was 67.8MB. Max. memory is 16.1GB. [2021-11-07 10:18:26,882 INFO L158 Benchmark]: Witness Printer took 73.20ms. Allocated memory is still 157.3MB. Free memory was 44.2MB in the beginning and 118.1MB in the end (delta: -73.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-07 10:18:26,883 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 54.5MB. Free memory is still 36.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1592.09ms. Allocated memory was 54.5MB in the beginning and 86.0MB in the end (delta: 31.5MB). Free memory was 26.1MB in the beginning and 48.7MB in the end (delta: -22.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 125.24ms. Allocated memory is still 86.0MB. Free memory was 48.7MB in the beginning and 43.7MB in the end (delta: 5.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.70ms. Allocated memory is still 86.0MB. Free memory was 43.7MB in the beginning and 40.8MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 568.18ms. Allocated memory is still 86.0MB. Free memory was 40.8MB in the beginning and 41.5MB in the end (delta: -756.5kB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. * TraceAbstraction took 14670.92ms. Allocated memory was 86.0MB in the beginning and 157.3MB in the end (delta: 71.3MB). Free memory was 41.1MB in the beginning and 44.2MB in the end (delta: -3.2MB). Peak memory consumption was 67.8MB. Max. memory is 16.1GB. * Witness Printer took 73.20ms. Allocated memory is still 157.3MB. Free memory was 44.2MB in the beginning and 118.1MB in the end (delta: -73.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 223]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L5906] short d1[160]; [L5907] short d2[160]; [L5908] int c = __VERIFIER_nondet_int(); [L211] COND FALSE !(!cond) [L5911] unsigned size = __VERIFIER_nondet_uint(); [L211] COND FALSE !(!cond) [L211] COND FALSE !(!cond) [L211] COND FALSE !(!cond) [L5871] COND TRUE n > 0 [L5872] char *sp = (char *)s; [L5873] unsigned long i = 0; [L5873] COND TRUE i < n [L5874] sp[i] = c [L5873] i++ [L5873] COND TRUE i < n [L5874] sp[i] = c [L5873] i++ [L5873] COND TRUE i < n [L5874] sp[i] = c [L5873] i++ [L5873] COND TRUE i < n [L5874] sp[i] = c [L5873] i++ [L5873] COND TRUE i < n [L5874] sp[i] = c [L5873] i++ [L5873] COND TRUE i < n [L5874] sp[i] = c [L5873] i++ [L5873] COND TRUE i < n [L5874] sp[i] = c [L5873] i++ [L5873] COND TRUE i < n [L5874] sp[i] = c [L5873] i++ [L5873] COND FALSE !(i < n) [L5876] return s; [L211] COND FALSE !(!cond) [L223] COND FALSE !(!cond) [L5884] size_t num_uint64s = n >> 3; [L5885] size_t rem = n & 0x7; [L223] COND FALSE !(!cond) [L5888] uint64_t *d = (uint64_t *)dst; [L5890] size_t i = 0; [L5890] COND TRUE i < num_uint64s [L5891] d[i] = 0 [L5890] ++i [L5890] COND FALSE !(i < num_uint64s) [L5894] return dst; [L223] COND FALSE !(!cond) [L5655-L5658] COND TRUE len > 0 && a != ((void *)0) && b != ((void *)0) [L266] return __VERIFIER_nondet_ulong(); [L5660] size_t i = nondet_uint64_t(); [L211] COND FALSE !(!cond) [L5664] a[i] [L5664] b[i] [L223] COND TRUE !cond [L223] reach_error() - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 53 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 14549.60ms, OverallIterations: 12, TraceHistogramMax: 8, PathProgramHistogramMax: 3, EmptinessCheckTime: 20.21ms, AutomataDifference: 2476.65ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 11.23ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 547 SdHoareTripleChecker+Valid, 690.10ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 547 mSDsluCounter, 2323 SdHoareTripleChecker+Invalid, 567.79ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 121 IncrementalHoareTripleChecker+Unchecked, 1897 mSDsCounter, 45 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 505 IncrementalHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 45 mSolverCounterUnsat, 426 mSDtfsCounter, 505 mSolverCounterSat, 17.14ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 632 GetRequests, 484 SyntacticMatches, 1 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 514 ImplicationChecksByTransitivity, 4999.12ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=11, InterpolantAutomatonStates: 105, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 71.41ms AutomataMinimizationTime, 11 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 140.66ms SsaConstructionTime, 1460.06ms SatisfiabilityAnalysisTime, 6497.24ms InterpolantComputationTime, 355 NumberOfCodeBlocks, 349 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 594 ConstructedInterpolants, 48 QuantifiedInterpolants, 3086 SizeOfPredicates, 83 NumberOfNonLiveVariables, 1209 ConjunctsInSsa, 120 ConjunctsInUnsatCore, 22 InterpolantComputations, 16 PerfectInterpolantSequences, 22/140 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-07 10:18:26,933 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 Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE