./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 839c364b 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 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:10:10,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:10:10,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:10:10,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:10:10,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:10:10,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:10:10,717 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:10:10,721 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:10:10,723 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:10:10,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:10:10,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:10:10,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:10:10,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:10:10,733 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:10:10,736 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:10:10,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:10:10,740 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:10:10,741 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:10:10,743 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:10:10,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:10:10,752 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:10:10,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:10:10,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:10:10,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:10:10,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:10:10,759 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:10:10,759 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:10:10,760 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:10:10,761 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:10:10,762 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:10:10,762 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:10:10,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:10:10,764 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:10:10,766 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:10:10,767 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:10:10,767 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:10:10,768 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:10:10,768 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:10:10,768 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:10:10,769 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:10:10,770 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:10:10,770 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:10:10,800 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:10:10,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:10:10,801 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:10:10,801 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:10:10,802 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:10:10,802 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:10:10,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:10:10,803 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:10:10,803 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:10:10,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:10:10,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:10:10,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:10:10,804 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:10:10,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:10:10,805 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:10:10,805 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:10:10,805 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:10:10,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:10:10,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:10:10,806 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:10:10,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:10:10,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:10:10,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:10:10,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:10:10,806 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:10:10,807 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:10:10,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:10:10,807 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:10:10,807 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:10:10,807 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:10:10,808 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:10:10,808 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5db0d3c47797ff0a215821e8d5fa38ab9190be93d125d3ffd24136b371560f6c [2021-12-14 17:10:11,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:10:11,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:10:11,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:10:11,070 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:10:11,071 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:10:11,072 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2021-12-14 17:10:11,125 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e12262885/ec608aac2c6943a8b7cee2b397a87596/FLAG269f865f4 [2021-12-14 17:10:11,684 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:10:11,684 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2021-12-14 17:10:11,712 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e12262885/ec608aac2c6943a8b7cee2b397a87596/FLAG269f865f4 [2021-12-14 17:10:11,904 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e12262885/ec608aac2c6943a8b7cee2b397a87596 [2021-12-14 17:10:11,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:10:11,907 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:10:11,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:10:11,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:10:11,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:10:11,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:10:11" (1/1) ... [2021-12-14 17:10:11,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b88afae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:11, skipping insertion in model container [2021-12-14 17:10:11,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:10:11" (1/1) ... [2021-12-14 17:10:11,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:10:11,989 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:10:12,209 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4491,4504] [2021-12-14 17:10:12,216 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4551,4564] [2021-12-14 17:10:12,712 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:12,713 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:12,714 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:12,716 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:12,717 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:12,727 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:12,731 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:12,733 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:12,733 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:12,735 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:12,736 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:12,736 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:12,737 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:12,854 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-14 17:10:12,856 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-14 17:10:12,859 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-14 17:10:12,864 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-14 17:10:12,865 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-14 17:10:12,866 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-14 17:10:12,868 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-14 17:10:12,869 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-14 17:10:12,871 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-14 17:10:12,876 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-14 17:10:12,960 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:10:12,969 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:10:12,990 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4491,4504] [2021-12-14 17:10:13,000 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4551,4564] [2021-12-14 17:10:13,079 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:13,079 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:13,079 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:13,080 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:13,081 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:13,086 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:13,091 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:13,094 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:13,095 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:13,096 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:13,098 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:13,098 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:13,098 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:13,130 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-14 17:10:13,131 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-14 17:10:13,132 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-14 17:10:13,132 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-14 17:10:13,133 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-14 17:10:13,134 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-14 17:10:13,136 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-14 17:10:13,137 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-14 17:10:13,137 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-14 17:10:13,138 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-14 17:10:13,156 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:10:13,254 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:10:13,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:13 WrapperNode [2021-12-14 17:10:13,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:10:13,256 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:10:13,256 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:10:13,256 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:10:13,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:13" (1/1) ... [2021-12-14 17:10:13,344 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:13" (1/1) ... [2021-12-14 17:10:13,399 INFO L137 Inliner]: procedures = 592, calls = 609, calls flagged for inlining = 38, calls inlined = 6, statements flattened = 85 [2021-12-14 17:10:13,401 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:10:13,402 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:10:13,402 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:10:13,402 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:10:13,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:13" (1/1) ... [2021-12-14 17:10:13,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:13" (1/1) ... [2021-12-14 17:10:13,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:13" (1/1) ... [2021-12-14 17:10:13,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:13" (1/1) ... [2021-12-14 17:10:13,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:13" (1/1) ... [2021-12-14 17:10:13,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:13" (1/1) ... [2021-12-14 17:10:13,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:13" (1/1) ... [2021-12-14 17:10:13,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:10:13,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:10:13,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:10:13,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:10:13,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:13" (1/1) ... [2021-12-14 17:10:13,481 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:10:13,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:10:13,504 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 17:10:13,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 17:10:13,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:10:13,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:10:13,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-14 17:10:13,552 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-14 17:10:13,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:10:13,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:10:13,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:10:13,553 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 17:10:13,553 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 17:10:13,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:10:13,554 INFO L130 BoogieDeclarations]: Found specification of procedure assert_all_bytes_are [2021-12-14 17:10:13,555 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_all_bytes_are [2021-12-14 17:10:13,555 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-14 17:10:13,556 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-14 17:10:13,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:10:13,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:10:13,789 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:10:13,791 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:10:14,003 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:10:14,017 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:10:14,021 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-14 17:10:14,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:10:14 BoogieIcfgContainer [2021-12-14 17:10:14,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:10:14,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:10:14,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:10:14,029 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:10:14,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:10:11" (1/3) ... [2021-12-14 17:10:14,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cee2189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:10:14, skipping insertion in model container [2021-12-14 17:10:14,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:13" (2/3) ... [2021-12-14 17:10:14,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cee2189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:10:14, skipping insertion in model container [2021-12-14 17:10:14,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:10:14" (3/3) ... [2021-12-14 17:10:14,032 INFO L111 eAbstractionObserver]: Analyzing ICFG memset_override_0_harness.i [2021-12-14 17:10:14,038 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:10:14,038 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:10:14,081 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:10:14,087 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 17:10:14,087 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:10:14,108 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 40 states have internal predecessors, (49), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-14 17:10:14,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-14 17:10:14,113 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:10:14,113 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:10:14,114 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:10:14,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:10:14,118 INFO L85 PathProgramCache]: Analyzing trace with hash 16590849, now seen corresponding path program 1 times [2021-12-14 17:10:14,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:10:14,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269960453] [2021-12-14 17:10:14,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:10:14,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:10:14,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:14,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:10:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:14,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:10:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:14,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 17:10:14,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:14,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 17:10:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:14,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-14 17:10:14,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:14,533 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-14 17:10:14,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:10:14,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269960453] [2021-12-14 17:10:14,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269960453] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:10:14,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:10:14,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 17:10:14,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395915594] [2021-12-14 17:10:14,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:10:14,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 17:10:14,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:10:14,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 17:10:14,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 17:10:14,587 INFO L87 Difference]: Start difference. First operand has 60 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 40 states have internal predecessors, (49), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 17:10:14,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:10:14,620 INFO L93 Difference]: Finished difference Result 117 states and 167 transitions. [2021-12-14 17:10:14,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 17:10:14,623 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2021-12-14 17:10:14,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:10:14,632 INFO L225 Difference]: With dead ends: 117 [2021-12-14 17:10:14,632 INFO L226 Difference]: Without dead ends: 52 [2021-12-14 17:10:14,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 17:10:14,639 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:10:14,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:10:14,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-12-14 17:10:14,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-12-14 17:10:14,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 34 states have internal predecessors, (38), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-14 17:10:14,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2021-12-14 17:10:14,680 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 36 [2021-12-14 17:10:14,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:10:14,680 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2021-12-14 17:10:14,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 17:10:14,681 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2021-12-14 17:10:14,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-14 17:10:14,682 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:10:14,682 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:10:14,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:10:14,683 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:10:14,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:10:14,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1271235587, now seen corresponding path program 1 times [2021-12-14 17:10:14,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:10:14,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600450086] [2021-12-14 17:10:14,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:10:14,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:10:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:14,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:10:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:15,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:10:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:15,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 17:10:15,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:15,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 17:10:15,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:15,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-14 17:10:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:15,162 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-14 17:10:15,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:10:15,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600450086] [2021-12-14 17:10:15,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600450086] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:10:15,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560066405] [2021-12-14 17:10:15,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:10:15,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:10:15,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:10:15,171 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:10:15,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 17:10:15,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:15,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-14 17:10:15,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:10:15,730 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-14 17:10:15,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:10:16,091 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-14 17:10:16,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560066405] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 17:10:16,096 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 17:10:16,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 14 [2021-12-14 17:10:16,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013358443] [2021-12-14 17:10:16,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 17:10:16,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-14 17:10:16,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:10:16,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-14 17:10:16,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-12-14 17:10:16,099 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-14 17:10:16,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:10:16,314 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2021-12-14 17:10:16,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 17:10:16,315 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 36 [2021-12-14 17:10:16,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:10:16,320 INFO L225 Difference]: With dead ends: 58 [2021-12-14 17:10:16,320 INFO L226 Difference]: Without dead ends: 56 [2021-12-14 17:10:16,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 69 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-12-14 17:10:16,322 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 61 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:10:16,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 502 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:10:16,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-14 17:10:16,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-12-14 17:10:16,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 37 states have internal predecessors, (41), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-14 17:10:16,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2021-12-14 17:10:16,343 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 36 [2021-12-14 17:10:16,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:10:16,345 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2021-12-14 17:10:16,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-14 17:10:16,345 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2021-12-14 17:10:16,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-14 17:10:16,349 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:10:16,349 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:10:16,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-14 17:10:16,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:10:16,564 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:10:16,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:10:16,564 INFO L85 PathProgramCache]: Analyzing trace with hash 2010040638, now seen corresponding path program 1 times [2021-12-14 17:10:16,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:10:16,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054310175] [2021-12-14 17:10:16,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:10:16,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:10:16,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 17:10:16,638 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 17:10:16,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 17:10:16,697 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 17:10:16,698 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-14 17:10:16,699 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-14 17:10:16,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 17:10:16,703 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-14 17:10:16,706 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-14 17:10:16,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 05:10:16 BoogieIcfgContainer [2021-12-14 17:10:16,732 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-14 17:10:16,732 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 17:10:16,732 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 17:10:16,733 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 17:10:16,733 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:10:14" (3/4) ... [2021-12-14 17:10:16,735 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-14 17:10:16,736 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 17:10:16,736 INFO L158 Benchmark]: Toolchain (without parser) took 4829.53ms. Allocated memory was 86.0MB in the beginning and 134.2MB in the end (delta: 48.2MB). Free memory was 61.7MB in the beginning and 73.2MB in the end (delta: -11.5MB). Peak memory consumption was 35.3MB. Max. memory is 16.1GB. [2021-12-14 17:10:16,737 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 86.0MB. Free memory is still 64.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 17:10:16,737 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1347.02ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 61.4MB in the beginning and 50.1MB in the end (delta: 11.2MB). Peak memory consumption was 41.6MB. Max. memory is 16.1GB. [2021-12-14 17:10:16,738 INFO L158 Benchmark]: Boogie Procedure Inliner took 145.60ms. Allocated memory is still 104.9MB. Free memory was 50.1MB in the beginning and 45.4MB in the end (delta: 4.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-14 17:10:16,738 INFO L158 Benchmark]: Boogie Preprocessor took 58.89ms. Allocated memory is still 104.9MB. Free memory was 45.4MB in the beginning and 43.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 17:10:16,738 INFO L158 Benchmark]: RCFGBuilder took 562.85ms. Allocated memory is still 104.9MB. Free memory was 43.3MB in the beginning and 57.0MB in the end (delta: -13.7MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2021-12-14 17:10:16,739 INFO L158 Benchmark]: TraceAbstraction took 2706.28ms. Allocated memory was 104.9MB in the beginning and 134.2MB in the end (delta: 29.4MB). Free memory was 56.2MB in the beginning and 73.2MB in the end (delta: -17.0MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. [2021-12-14 17:10:16,739 INFO L158 Benchmark]: Witness Printer took 3.61ms. Allocated memory is still 134.2MB. Free memory is still 73.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 17:10:16,741 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 86.0MB. Free memory is still 64.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1347.02ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 61.4MB in the beginning and 50.1MB in the end (delta: 11.2MB). Peak memory consumption was 41.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 145.60ms. Allocated memory is still 104.9MB. Free memory was 50.1MB in the beginning and 45.4MB in the end (delta: 4.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.89ms. Allocated memory is still 104.9MB. Free memory was 45.4MB in the beginning and 43.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 562.85ms. Allocated memory is still 104.9MB. Free memory was 43.3MB in the beginning and 57.0MB in the end (delta: -13.7MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. * TraceAbstraction took 2706.28ms. Allocated memory was 104.9MB in the beginning and 134.2MB in the end (delta: 29.4MB). Free memory was 56.2MB in the beginning and 73.2MB in the end (delta: -17.0MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. * Witness Printer took 3.61ms. Allocated memory is still 134.2MB. Free memory is still 73.2MB. 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s 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: [L5919] CALL memset_override_0_harness() [L5906] short d1[160]; [L5907] short d2[160]; [L5908] int c = __VERIFIER_nondet_int(); [L5909] CALL assume_abort_if_not(c == 0) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5909] RET assume_abort_if_not(c == 0) VAL [c=0, d1={6:0}, d2={5:0}] [L5911] unsigned size = __VERIFIER_nondet_uint(); [L5912] CALL assume_abort_if_not((size & 0x7) == 0) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5912] RET assume_abort_if_not((size & 0x7) == 0) VAL [c=0, d1={6:0}, d2={5:0}, size=0] [L5913] CALL assume_abort_if_not(size < 160) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5913] RET assume_abort_if_not(size < 160) VAL [c=0, d1={6:0}, d2={5:0}, size=0] [L5914] CALL memset_impl(d1, c, size) [L5870] CALL assume_abort_if_not((((n) == 0) || (s))) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5870] RET assume_abort_if_not((((n) == 0) || (s))) VAL [c=0, n=0, s={6:0}] [L5871] COND FALSE !(n > 0) VAL [c=0, n=0, s={6:0}] [L5876] return s; VAL [c=0, n=0, s={6:0}] [L5914] RET memset_impl(d1, c, size) [L5915] CALL memset_override_0_impl(d2, c, size) [L5881] CALL assume_abort_if_not((((n) == 0) || (dst))) VAL [\old(cond)=1] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5881] RET assume_abort_if_not((((n) == 0) || (dst))) VAL [c=0, dst={5:0}, n=0] [L5883] CALL __VERIFIER_assert(c == 0) VAL [\old(cond)=1] [L223] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L5883] RET __VERIFIER_assert(c == 0) VAL [c=0, dst={5:0}, n=0] [L5884] size_t num_uint64s = n >> 3; [L5885] size_t rem = n & 0x7; VAL [c=0, dst={5:0}, n=0, num_uint64s=0] [L5886] CALL __VERIFIER_assert(rem == 0) VAL [\old(cond)=0] [L223] COND TRUE !cond VAL [\old(cond)=0, cond=0] [L223] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.6s, OverallIterations: 3, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 61 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 61 mSDsluCounter, 577 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 449 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 158 IncrementalHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 128 mSDtfsCounter, 158 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 107 GetRequests, 86 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 150 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 443 SizeOfPredicates, 13 NumberOfNonLiveVariables, 148 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 124/160 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 [2021-12-14 17:10:16,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/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 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:10:18,743 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:10:18,745 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:10:18,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:10:18,780 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:10:18,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:10:18,783 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:10:18,785 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:10:18,787 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:10:18,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:10:18,790 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:10:18,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:10:18,796 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:10:18,797 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:10:18,798 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:10:18,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:10:18,800 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:10:18,801 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:10:18,802 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:10:18,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:10:18,805 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:10:18,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:10:18,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:10:18,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:10:18,810 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:10:18,810 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:10:18,811 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:10:18,811 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:10:18,812 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:10:18,813 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:10:18,813 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:10:18,814 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:10:18,814 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:10:18,815 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:10:18,816 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:10:18,816 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:10:18,817 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:10:18,817 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:10:18,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:10:18,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:10:18,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:10:18,820 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-12-14 17:10:18,841 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:10:18,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:10:18,841 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:10:18,842 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:10:18,842 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:10:18,843 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:10:18,843 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:10:18,843 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:10:18,844 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:10:18,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:10:18,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:10:18,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:10:18,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:10:18,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:10:18,845 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-14 17:10:18,845 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-14 17:10:18,845 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-14 17:10:18,846 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:10:18,846 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:10:18,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:10:18,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:10:18,846 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:10:18,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:10:18,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:10:18,847 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:10:18,847 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:10:18,848 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:10:18,848 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-14 17:10:18,848 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-14 17:10:18,848 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:10:18,848 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:10:18,849 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:10:18,849 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:10:18,849 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-14 17:10:18,849 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5db0d3c47797ff0a215821e8d5fa38ab9190be93d125d3ffd24136b371560f6c [2021-12-14 17:10:19,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:10:19,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:10:19,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:10:19,203 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:10:19,203 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:10:19,204 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2021-12-14 17:10:19,268 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a827e7390/8b5ad48c565c4a52a49b0e1420fd2436/FLAG56930d33e [2021-12-14 17:10:19,968 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:10:19,969 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2021-12-14 17:10:20,000 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a827e7390/8b5ad48c565c4a52a49b0e1420fd2436/FLAG56930d33e [2021-12-14 17:10:20,144 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a827e7390/8b5ad48c565c4a52a49b0e1420fd2436 [2021-12-14 17:10:20,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:10:20,149 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:10:20,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:10:20,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:10:20,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:10:20,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:10:20" (1/1) ... [2021-12-14 17:10:20,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d64b161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:20, skipping insertion in model container [2021-12-14 17:10:20,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:10:20" (1/1) ... [2021-12-14 17:10:20,163 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:10:20,243 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:10:20,478 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4491,4504] [2021-12-14 17:10:20,485 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4551,4564] [2021-12-14 17:10:20,955 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:20,955 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:20,956 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:20,956 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:20,957 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:20,981 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:20,981 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:20,983 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:20,983 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:20,984 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:20,985 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:20,986 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:20,986 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:21,148 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-14 17:10:21,150 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-14 17:10:21,152 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-14 17:10:21,153 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-14 17:10:21,155 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-14 17:10:21,156 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-14 17:10:21,158 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-14 17:10:21,160 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-14 17:10:21,161 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-14 17:10:21,163 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-14 17:10:21,236 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:10:21,254 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-14 17:10:21,292 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:10:21,297 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4491,4504] [2021-12-14 17:10:21,298 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4551,4564] [2021-12-14 17:10:21,367 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:21,368 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:21,369 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:21,369 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:21,370 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:21,389 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:21,390 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:21,392 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:21,393 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:21,394 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:21,395 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:21,396 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:21,396 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:21,421 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-14 17:10:21,422 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-14 17:10:21,422 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-14 17:10:21,423 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-14 17:10:21,424 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-14 17:10:21,424 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-14 17:10:21,424 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-14 17:10:21,425 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-14 17:10:21,425 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-14 17:10:21,426 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-14 17:10:21,462 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:10:21,472 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:10:21,496 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4491,4504] [2021-12-14 17:10:21,497 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4551,4564] [2021-12-14 17:10:21,550 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:21,550 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:21,551 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:21,552 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:21,552 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:21,557 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:21,557 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:21,558 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:21,558 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:21,558 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:21,559 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:21,559 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:21,560 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:10:21,575 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-14 17:10:21,578 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-14 17:10:21,578 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-14 17:10:21,579 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-14 17:10:21,580 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-14 17:10:21,580 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-14 17:10:21,581 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-14 17:10:21,581 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-14 17:10:21,582 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-14 17:10:21,582 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-14 17:10:21,605 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:10:21,803 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:10:21,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:21 WrapperNode [2021-12-14 17:10:21,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:10:21,805 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:10:21,805 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:10:21,805 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:10:21,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:21" (1/1) ... [2021-12-14 17:10:21,872 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:21" (1/1) ... [2021-12-14 17:10:21,900 INFO L137 Inliner]: procedures = 611, calls = 609, calls flagged for inlining = 38, calls inlined = 6, statements flattened = 85 [2021-12-14 17:10:21,901 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:10:21,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:10:21,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:10:21,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:10:21,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:21" (1/1) ... [2021-12-14 17:10:21,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:21" (1/1) ... [2021-12-14 17:10:21,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:21" (1/1) ... [2021-12-14 17:10:21,922 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:21" (1/1) ... [2021-12-14 17:10:21,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:21" (1/1) ... [2021-12-14 17:10:21,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:21" (1/1) ... [2021-12-14 17:10:21,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:21" (1/1) ... [2021-12-14 17:10:21,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:10:21,967 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:10:21,967 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:10:21,967 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:10:21,968 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:21" (1/1) ... [2021-12-14 17:10:21,974 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:10:21,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:10:22,049 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 17:10:22,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 17:10:22,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:10:22,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-14 17:10:22,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-14 17:10:22,095 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-14 17:10:22,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:10:22,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:10:22,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:10:22,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-14 17:10:22,096 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 17:10:22,096 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 17:10:22,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:10:22,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-12-14 17:10:22,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-14 17:10:22,096 INFO L130 BoogieDeclarations]: Found specification of procedure assert_all_bytes_are [2021-12-14 17:10:22,097 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_all_bytes_are [2021-12-14 17:10:22,097 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-14 17:10:22,097 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-14 17:10:22,322 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:10:22,324 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:10:22,553 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:10:22,564 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:10:22,566 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-14 17:10:22,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:10:22 BoogieIcfgContainer [2021-12-14 17:10:22,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:10:22,570 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:10:22,570 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:10:22,572 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:10:22,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:10:20" (1/3) ... [2021-12-14 17:10:22,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21fa0db2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:10:22, skipping insertion in model container [2021-12-14 17:10:22,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:10:21" (2/3) ... [2021-12-14 17:10:22,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21fa0db2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:10:22, skipping insertion in model container [2021-12-14 17:10:22,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:10:22" (3/3) ... [2021-12-14 17:10:22,577 INFO L111 eAbstractionObserver]: Analyzing ICFG memset_override_0_harness.i [2021-12-14 17:10:22,582 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:10:22,582 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:10:22,629 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:10:22,637 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 17:10:22,638 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:10:22,652 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 40 states have internal predecessors, (49), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-14 17:10:22,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-14 17:10:22,661 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:10:22,662 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:10:22,663 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:10:22,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:10:22,669 INFO L85 PathProgramCache]: Analyzing trace with hash 16590849, now seen corresponding path program 1 times [2021-12-14 17:10:22,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 17:10:22,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239193835] [2021-12-14 17:10:22,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:10:22,682 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 17:10:22,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 17:10:22,699 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) [2021-12-14 17:10:22,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-14 17:10:22,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:22,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-14 17:10:22,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:10:22,984 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-14 17:10:22,985 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:10:22,986 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 17:10:22,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [239193835] [2021-12-14 17:10:22,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [239193835] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:10:22,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:10:22,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 17:10:22,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655184245] [2021-12-14 17:10:22,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:10:22,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 17:10:22,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 17:10:23,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 17:10:23,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 17:10:23,018 INFO L87 Difference]: Start difference. First operand has 60 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 40 states have internal predecessors, (49), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-14 17:10:23,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:10:23,041 INFO L93 Difference]: Finished difference Result 117 states and 167 transitions. [2021-12-14 17:10:23,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 17:10:23,043 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 36 [2021-12-14 17:10:23,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:10:23,049 INFO L225 Difference]: With dead ends: 117 [2021-12-14 17:10:23,050 INFO L226 Difference]: Without dead ends: 52 [2021-12-14 17:10:23,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 17:10:23,056 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:10:23,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:10:23,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-12-14 17:10:23,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-12-14 17:10:23,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 34 states have internal predecessors, (38), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-14 17:10:23,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2021-12-14 17:10:23,093 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 36 [2021-12-14 17:10:23,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:10:23,093 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2021-12-14 17:10:23,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-14 17:10:23,094 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2021-12-14 17:10:23,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-14 17:10:23,095 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:10:23,095 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:10:23,108 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-14 17:10:23,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 17:10:23,297 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:10:23,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:10:23,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1271235587, now seen corresponding path program 1 times [2021-12-14 17:10:23,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 17:10:23,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [28828449] [2021-12-14 17:10:23,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:10:23,299 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 17:10:23,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 17:10:23,300 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) [2021-12-14 17:10:23,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-14 17:10:23,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:23,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-14 17:10:23,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:10:23,578 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-14 17:10:23,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:10:23,751 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-14 17:10:23,751 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 17:10:23,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [28828449] [2021-12-14 17:10:23,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [28828449] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 17:10:23,756 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-14 17:10:23,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-12-14 17:10:23,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515945249] [2021-12-14 17:10:23,758 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-14 17:10:23,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-14 17:10:23,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 17:10:23,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-14 17:10:23,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-14 17:10:23,761 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-14 17:10:23,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:10:23,955 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2021-12-14 17:10:23,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 17:10:23,956 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 36 [2021-12-14 17:10:23,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:10:23,957 INFO L225 Difference]: With dead ends: 58 [2021-12-14 17:10:23,957 INFO L226 Difference]: Without dead ends: 56 [2021-12-14 17:10:23,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-12-14 17:10:23,959 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 46 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:10:23,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 262 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:10:23,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-14 17:10:23,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-12-14 17:10:23,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 37 states have internal predecessors, (41), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-14 17:10:23,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2021-12-14 17:10:23,969 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 36 [2021-12-14 17:10:23,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:10:23,970 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2021-12-14 17:10:23,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-14 17:10:23,971 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2021-12-14 17:10:23,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-14 17:10:23,972 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:10:23,972 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:10:23,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-14 17:10:24,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 17:10:24,193 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:10:24,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:10:24,194 INFO L85 PathProgramCache]: Analyzing trace with hash 2010040638, now seen corresponding path program 1 times [2021-12-14 17:10:24,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 17:10:24,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [679684211] [2021-12-14 17:10:24,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:10:24,195 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 17:10:24,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 17:10:24,197 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) [2021-12-14 17:10:24,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-14 17:10:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:24,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-14 17:10:24,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:10:24,586 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-14 17:10:24,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:10:24,857 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-14 17:10:24,857 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 17:10:24,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [679684211] [2021-12-14 17:10:24,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [679684211] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 17:10:24,858 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-14 17:10:24,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-12-14 17:10:24,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653546921] [2021-12-14 17:10:24,858 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-14 17:10:24,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-14 17:10:24,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 17:10:24,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-14 17:10:24,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-14 17:10:24,864 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand has 14 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 6 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-12-14 17:10:25,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:10:25,080 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2021-12-14 17:10:25,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 17:10:25,081 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 6 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 42 [2021-12-14 17:10:25,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:10:25,082 INFO L225 Difference]: With dead ends: 62 [2021-12-14 17:10:25,082 INFO L226 Difference]: Without dead ends: 60 [2021-12-14 17:10:25,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-12-14 17:10:25,083 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 13 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:10:25,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 503 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 28 Unchecked, 0.1s Time] [2021-12-14 17:10:25,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-12-14 17:10:25,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-12-14 17:10:25,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 40 states have internal predecessors, (44), 15 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-14 17:10:25,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2021-12-14 17:10:25,092 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 42 [2021-12-14 17:10:25,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:10:25,093 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2021-12-14 17:10:25,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 6 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-12-14 17:10:25,093 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2021-12-14 17:10:25,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-14 17:10:25,094 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:10:25,095 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:10:25,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-14 17:10:25,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 17:10:25,308 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:10:25,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:10:25,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1110629482, now seen corresponding path program 1 times [2021-12-14 17:10:25,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 17:10:25,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1711280657] [2021-12-14 17:10:25,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:10:25,310 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 17:10:25,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 17:10:25,311 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) [2021-12-14 17:10:25,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-14 17:10:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:25,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-14 17:10:25,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:10:25,663 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-12-14 17:10:25,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:10:25,664 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 17:10:25,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1711280657] [2021-12-14 17:10:25,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1711280657] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:10:25,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:10:25,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:10:25,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431941185] [2021-12-14 17:10:25,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:10:25,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:10:25,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 17:10:25,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:10:25,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:10:25,673 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-14 17:10:25,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:10:25,777 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2021-12-14 17:10:25,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 17:10:25,777 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 51 [2021-12-14 17:10:25,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:10:25,778 INFO L225 Difference]: With dead ends: 66 [2021-12-14 17:10:25,778 INFO L226 Difference]: Without dead ends: 64 [2021-12-14 17:10:25,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:10:25,779 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 24 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:10:25,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 256 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:10:25,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-12-14 17:10:25,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-12-14 17:10:25,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 42 states have (on average 1.119047619047619) internal successors, (47), 43 states have internal predecessors, (47), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-14 17:10:25,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2021-12-14 17:10:25,788 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 51 [2021-12-14 17:10:25,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:10:25,788 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2021-12-14 17:10:25,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-14 17:10:25,789 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2021-12-14 17:10:25,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-14 17:10:25,790 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:10:25,790 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:10:25,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-14 17:10:26,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 17:10:26,003 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:10:26,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:10:26,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1132287315, now seen corresponding path program 1 times [2021-12-14 17:10:26,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 17:10:26,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [678359027] [2021-12-14 17:10:26,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:10:26,005 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 17:10:26,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 17:10:26,006 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) [2021-12-14 17:10:26,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-14 17:10:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:26,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-14 17:10:26,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:10:26,439 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-14 17:10:26,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:10:26,626 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-14 17:10:26,626 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 17:10:26,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [678359027] [2021-12-14 17:10:26,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [678359027] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-14 17:10:26,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:10:26,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2021-12-14 17:10:26,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155732292] [2021-12-14 17:10:26,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:10:26,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:10:26,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 17:10:26,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:10:26,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-12-14 17:10:26,628 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-12-14 17:10:26,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:10:26,726 INFO L93 Difference]: Finished difference Result 107 states and 126 transitions. [2021-12-14 17:10:26,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:10:26,727 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 68 [2021-12-14 17:10:26,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:10:26,728 INFO L225 Difference]: With dead ends: 107 [2021-12-14 17:10:26,728 INFO L226 Difference]: Without dead ends: 79 [2021-12-14 17:10:26,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-12-14 17:10:26,730 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 30 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:10:26,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 194 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:10:26,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-12-14 17:10:26,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2021-12-14 17:10:26,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 52 states have internal predecessors, (57), 19 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-12-14 17:10:26,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 93 transitions. [2021-12-14 17:10:26,741 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 93 transitions. Word has length 68 [2021-12-14 17:10:26,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:10:26,741 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 93 transitions. [2021-12-14 17:10:26,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-12-14 17:10:26,742 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 93 transitions. [2021-12-14 17:10:26,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-14 17:10:26,744 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:10:26,744 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:10:26,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-14 17:10:26,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 17:10:26,952 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:10:26,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:10:26,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1524731977, now seen corresponding path program 1 times [2021-12-14 17:10:26,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 17:10:26,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1638161708] [2021-12-14 17:10:26,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:10:26,953 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 17:10:26,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 17:10:26,954 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) [2021-12-14 17:10:26,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-14 17:10:27,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:27,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-14 17:10:27,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:10:27,329 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 38 proven. 6 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-14 17:10:27,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:10:27,492 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-14 17:10:27,493 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 17:10:27,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1638161708] [2021-12-14 17:10:27,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1638161708] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-14 17:10:27,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:10:27,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-12-14 17:10:27,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103546898] [2021-12-14 17:10:27,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:10:27,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:10:27,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 17:10:27,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:10:27,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:10:27,494 INFO L87 Difference]: Start difference. First operand 77 states and 93 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-14 17:10:27,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:10:27,520 INFO L93 Difference]: Finished difference Result 131 states and 153 transitions. [2021-12-14 17:10:27,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:10:27,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 69 [2021-12-14 17:10:27,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:10:27,522 INFO L225 Difference]: With dead ends: 131 [2021-12-14 17:10:27,522 INFO L226 Difference]: Without dead ends: 78 [2021-12-14 17:10:27,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:10:27,524 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 1 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:10:27,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 124 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:10:27,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-12-14 17:10:27,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-12-14 17:10:27,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 53 states have internal predecessors, (58), 19 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-12-14 17:10:27,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 94 transitions. [2021-12-14 17:10:27,533 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 94 transitions. Word has length 69 [2021-12-14 17:10:27,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:10:27,534 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 94 transitions. [2021-12-14 17:10:27,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-14 17:10:27,534 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 94 transitions. [2021-12-14 17:10:27,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-14 17:10:27,536 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:10:27,536 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:10:27,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-14 17:10:27,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 17:10:27,749 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:10:27,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:10:27,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1383518092, now seen corresponding path program 1 times [2021-12-14 17:10:27,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 17:10:27,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709896729] [2021-12-14 17:10:27,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:10:27,750 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 17:10:27,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 17:10:27,751 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) [2021-12-14 17:10:27,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-14 17:10:27,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:27,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-14 17:10:27,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:10:28,162 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-14 17:10:28,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:10:28,394 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-14 17:10:28,394 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 17:10:28,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1709896729] [2021-12-14 17:10:28,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1709896729] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-14 17:10:28,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:10:28,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 13 [2021-12-14 17:10:28,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380489251] [2021-12-14 17:10:28,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:10:28,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:10:28,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 17:10:28,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:10:28,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-12-14 17:10:28,396 INFO L87 Difference]: Start difference. First operand 78 states and 94 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 4 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-12-14 17:10:28,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:10:28,499 INFO L93 Difference]: Finished difference Result 100 states and 115 transitions. [2021-12-14 17:10:28,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 17:10:28,500 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 4 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 72 [2021-12-14 17:10:28,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:10:28,501 INFO L225 Difference]: With dead ends: 100 [2021-12-14 17:10:28,501 INFO L226 Difference]: Without dead ends: 65 [2021-12-14 17:10:28,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-12-14 17:10:28,502 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 25 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:10:28,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 272 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:10:28,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-12-14 17:10:28,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-12-14 17:10:28,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 43 states have (on average 1.0930232558139534) internal successors, (47), 44 states have internal predecessors, (47), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-14 17:10:28,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2021-12-14 17:10:28,510 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 72 [2021-12-14 17:10:28,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:10:28,511 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2021-12-14 17:10:28,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 4 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-12-14 17:10:28,511 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2021-12-14 17:10:28,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-14 17:10:28,512 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:10:28,512 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:10:28,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-14 17:10:28,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 17:10:28,730 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:10:28,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:10:28,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1069315495, now seen corresponding path program 1 times [2021-12-14 17:10:28,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 17:10:28,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [203633555] [2021-12-14 17:10:28,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:10:28,732 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 17:10:28,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 17:10:28,733 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) [2021-12-14 17:10:28,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-14 17:10:28,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:28,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-14 17:10:28,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:10:29,178 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 38 proven. 7 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-14 17:10:29,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:10:29,527 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-12-14 17:10:29,528 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 17:10:29,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [203633555] [2021-12-14 17:10:29,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [203633555] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 17:10:29,528 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-14 17:10:29,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2021-12-14 17:10:29,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507645525] [2021-12-14 17:10:29,529 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-14 17:10:29,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-14 17:10:29,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 17:10:29,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-14 17:10:29,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-12-14 17:10:29,530 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 11 states have internal predecessors, (46), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2021-12-14 17:10:29,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:10:29,703 INFO L93 Difference]: Finished difference Result 122 states and 139 transitions. [2021-12-14 17:10:29,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 17:10:29,704 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 11 states have internal predecessors, (46), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) Word has length 71 [2021-12-14 17:10:29,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:10:29,705 INFO L225 Difference]: With dead ends: 122 [2021-12-14 17:10:29,705 INFO L226 Difference]: Without dead ends: 69 [2021-12-14 17:10:29,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-12-14 17:10:29,707 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 4 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:10:29,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 491 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 15 Unchecked, 0.1s Time] [2021-12-14 17:10:29,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-12-14 17:10:29,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-12-14 17:10:29,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 48 states have internal predecessors, (51), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-14 17:10:29,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2021-12-14 17:10:29,714 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 71 [2021-12-14 17:10:29,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:10:29,715 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2021-12-14 17:10:29,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 11 states have internal predecessors, (46), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2021-12-14 17:10:29,715 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2021-12-14 17:10:29,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-14 17:10:29,716 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:10:29,716 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:10:29,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-14 17:10:29,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 17:10:29,930 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:10:29,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:10:29,931 INFO L85 PathProgramCache]: Analyzing trace with hash 511671837, now seen corresponding path program 2 times [2021-12-14 17:10:29,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 17:10:29,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [448532814] [2021-12-14 17:10:29,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 17:10:29,932 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 17:10:29,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 17:10:29,933 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) [2021-12-14 17:10:29,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-14 17:10:30,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-14 17:10:30,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 17:10:30,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-14 17:10:30,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:10:30,568 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 38 proven. 15 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-14 17:10:30,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:10:31,177 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-12-14 17:10:31,177 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 17:10:31,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [448532814] [2021-12-14 17:10:31,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [448532814] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 17:10:31,177 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-14 17:10:31,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2021-12-14 17:10:31,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121804385] [2021-12-14 17:10:31,177 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-14 17:10:31,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-14 17:10:31,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 17:10:31,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-14 17:10:31,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-12-14 17:10:31,179 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2021-12-14 17:10:31,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:10:31,804 INFO L93 Difference]: Finished difference Result 130 states and 149 transitions. [2021-12-14 17:10:31,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-14 17:10:31,805 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) Word has length 75 [2021-12-14 17:10:31,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:10:31,806 INFO L225 Difference]: With dead ends: 130 [2021-12-14 17:10:31,806 INFO L226 Difference]: Without dead ends: 77 [2021-12-14 17:10:31,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-14 17:10:31,807 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 6 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:10:31,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 507 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 21 Unchecked, 0.1s Time] [2021-12-14 17:10:31,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-12-14 17:10:31,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-12-14 17:10:31,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 55 states have (on average 1.0727272727272728) internal successors, (59), 56 states have internal predecessors, (59), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-14 17:10:31,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2021-12-14 17:10:31,814 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 75 [2021-12-14 17:10:31,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:10:31,815 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2021-12-14 17:10:31,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2021-12-14 17:10:31,815 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2021-12-14 17:10:31,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-14 17:10:31,816 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:10:31,817 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:10:31,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-12-14 17:10:32,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 17:10:32,034 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:10:32,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:10:32,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1085153371, now seen corresponding path program 3 times [2021-12-14 17:10:32,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 17:10:32,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [25296895] [2021-12-14 17:10:32,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-14 17:10:32,035 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 17:10:32,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 17:10:32,036 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) [2021-12-14 17:10:32,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-14 17:10:32,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-14 17:10:32,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 17:10:32,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-14 17:10:32,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:10:32,440 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 29 proven. 3 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-12-14 17:10:32,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:10:32,786 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-12-14 17:10:32,786 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 17:10:32,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [25296895] [2021-12-14 17:10:32,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [25296895] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 17:10:32,787 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-14 17:10:32,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-12-14 17:10:32,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665295247] [2021-12-14 17:10:32,787 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-14 17:10:32,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-14 17:10:32,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 17:10:32,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-14 17:10:32,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-12-14 17:10:32,788 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand has 16 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 8 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2021-12-14 17:10:33,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:10:33,581 INFO L93 Difference]: Finished difference Result 113 states and 128 transitions. [2021-12-14 17:10:33,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 17:10:33,581 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 8 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) Word has length 83 [2021-12-14 17:10:33,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:10:33,582 INFO L225 Difference]: With dead ends: 113 [2021-12-14 17:10:33,582 INFO L226 Difference]: Without dead ends: 85 [2021-12-14 17:10:33,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2021-12-14 17:10:33,584 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 61 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-14 17:10:33,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 445 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 111 Invalid, 0 Unknown, 16 Unchecked, 0.6s Time] [2021-12-14 17:10:33,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-12-14 17:10:33,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 82. [2021-12-14 17:10:33,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 60 states have internal predecessors, (64), 16 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-14 17:10:33,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 94 transitions. [2021-12-14 17:10:33,595 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 94 transitions. Word has length 83 [2021-12-14 17:10:33,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:10:33,596 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 94 transitions. [2021-12-14 17:10:33,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 8 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2021-12-14 17:10:33,596 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 94 transitions. [2021-12-14 17:10:33,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-14 17:10:33,597 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:10:33,597 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:10:33,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-12-14 17:10:33,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 17:10:33,807 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:10:33,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:10:33,808 INFO L85 PathProgramCache]: Analyzing trace with hash -2075883641, now seen corresponding path program 1 times [2021-12-14 17:10:33,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 17:10:33,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [871247219] [2021-12-14 17:10:33,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:10:33,809 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 17:10:33,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 17:10:33,810 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) [2021-12-14 17:10:33,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-14 17:10:34,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:10:34,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-14 17:10:34,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:10:34,771 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 38 proven. 55 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-14 17:10:34,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:10:35,689 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 9 proven. 61 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-12-14 17:10:35,689 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 17:10:35,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [871247219] [2021-12-14 17:10:35,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [871247219] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 17:10:35,689 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-14 17:10:35,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 26 [2021-12-14 17:10:35,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495526103] [2021-12-14 17:10:35,690 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-14 17:10:35,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-14 17:10:35,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 17:10:35,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-14 17:10:35,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2021-12-14 17:10:35,691 INFO L87 Difference]: Start difference. First operand 82 states and 94 transitions. Second operand has 26 states, 25 states have (on average 2.88) internal successors, (72), 23 states have internal predecessors, (72), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2021-12-14 17:10:35,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:10:35,970 INFO L93 Difference]: Finished difference Result 142 states and 162 transitions. [2021-12-14 17:10:35,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-14 17:10:35,972 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.88) internal successors, (72), 23 states have internal predecessors, (72), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) Word has length 85 [2021-12-14 17:10:35,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:10:35,972 INFO L225 Difference]: With dead ends: 142 [2021-12-14 17:10:35,972 INFO L226 Difference]: Without dead ends: 84 [2021-12-14 17:10:35,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2021-12-14 17:10:35,973 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 6 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:10:35,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 762 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 125 Invalid, 0 Unknown, 38 Unchecked, 0.2s Time] [2021-12-14 17:10:35,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-12-14 17:10:35,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-12-14 17:10:35,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 62 states have internal predecessors, (66), 16 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-14 17:10:35,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 96 transitions. [2021-12-14 17:10:35,981 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 96 transitions. Word has length 85 [2021-12-14 17:10:35,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:10:35,981 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 96 transitions. [2021-12-14 17:10:35,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.88) internal successors, (72), 23 states have internal predecessors, (72), 6 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2021-12-14 17:10:35,982 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 96 transitions. [2021-12-14 17:10:35,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-14 17:10:35,983 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:10:35,983 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:10:35,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-12-14 17:10:36,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 17:10:36,196 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:10:36,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:10:36,196 INFO L85 PathProgramCache]: Analyzing trace with hash 24387113, now seen corresponding path program 2 times [2021-12-14 17:10:36,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 17:10:36,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1019949698] [2021-12-14 17:10:36,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 17:10:36,197 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 17:10:36,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 17:10:36,198 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) [2021-12-14 17:10:36,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-14 17:10:36,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-14 17:10:36,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 17:10:36,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 94 conjunts are in the unsatisfiable core [2021-12-14 17:10:36,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:10:36,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2021-12-14 17:10:37,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-14 17:10:37,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:37,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-14 17:10:37,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:37,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:37,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:37,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2021-12-14 17:10:38,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:38,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:38,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:38,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:38,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:38,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:38,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 48 [2021-12-14 17:10:38,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:38,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:38,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:38,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:38,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:38,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:38,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:38,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:38,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:38,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:38,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 62 [2021-12-14 17:10:38,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:38,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:38,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:38,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:38,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:38,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:38,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:38,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:38,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:38,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:38,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:38,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:38,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:38,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:38,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:38,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 76 [2021-12-14 17:10:39,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 87 [2021-12-14 17:10:39,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:39,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 29 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 93 [2021-12-14 17:10:42,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:42,248 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 17:10:42,248 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 17:10:42,249 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 17:10:42,249 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 17:10:42,250 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 17:10:42,250 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 17:10:42,251 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 17:10:42,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 57 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 173 [2021-12-14 17:10:46,701 INFO L354 Elim1Store]: treesize reduction 122, result has 5.4 percent of original size [2021-12-14 17:10:46,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 18 select indices, 18 select index equivalence classes, 29 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 16 case distinctions, treesize of input 127 treesize of output 61 [2021-12-14 17:10:46,856 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 35 proven. 89 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-14 17:10:46,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:10:47,369 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 17:10:47,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1019949698] [2021-12-14 17:10:47,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1019949698] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:10:47,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1420383141] [2021-12-14 17:10:47,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 17:10:47,370 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-14 17:10:47,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-14 17:10:47,371 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-14 17:10:47,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-12-14 17:10:48,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-14 17:10:48,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 17:10:48,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 88 conjunts are in the unsatisfiable core [2021-12-14 17:10:48,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:10:48,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2021-12-14 17:10:49,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:49,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-12-14 17:10:49,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:49,611 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 17:10:49,620 INFO L354 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2021-12-14 17:10:49,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-12-14 17:10:50,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:50,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:50,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:50,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:50,047 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 17:10:50,050 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-14 17:10:50,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 45 [2021-12-14 17:10:50,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:50,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:50,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:50,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:50,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:50,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:50,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:50,538 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 17:10:50,542 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-14 17:10:50,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 58 [2021-12-14 17:10:51,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:51,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:51,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:51,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:51,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:51,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:51,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:51,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:51,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:51,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:51,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:51,217 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 17:10:51,220 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-14 17:10:51,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 61 treesize of output 72 [2021-12-14 17:10:51,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:51,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:51,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:51,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:51,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:51,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:51,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:51,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:51,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:51,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:51,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:51,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:51,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:51,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:51,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:51,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:51,827 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 17:10:51,831 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-14 17:10:51,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 70 treesize of output 84 [2021-12-14 17:10:52,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:52,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:52,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:52,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:52,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:52,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:52,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:52,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:52,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:52,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:52,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:52,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:52,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:52,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:52,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:52,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:52,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:52,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:52,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:52,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:52,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:52,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:52,493 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 17:10:52,496 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-14 17:10:52,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 81 treesize of output 98 [2021-12-14 17:10:53,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:53,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:53,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:53,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:53,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:53,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:53,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:53,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:53,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:53,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:53,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:53,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:53,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:53,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:53,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:53,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:53,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:53,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:53,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:53,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:53,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:53,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:53,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:53,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:53,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:53,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:53,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:53,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:53,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:53,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:53,209 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 17:10:53,213 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-14 17:10:53,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 29 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 7 case distinctions, treesize of input 82 treesize of output 102 [2021-12-14 17:10:58,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,100 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 17:10:58,100 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 17:10:58,100 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 17:10:58,101 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 17:10:58,101 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 17:10:58,101 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 17:10:58,102 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 17:10:58,104 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 17:10:58,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:10:58,106 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 17:10:58,123 INFO L354 Elim1Store]: treesize reduction 26, result has 21.2 percent of original size [2021-12-14 17:10:58,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 57 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 9 case distinctions, treesize of input 132 treesize of output 183 [2021-12-14 17:11:05,678 INFO L354 Elim1Store]: treesize reduction 162, result has 4.1 percent of original size [2021-12-14 17:11:05,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 19 select indices, 19 select index equivalence classes, 29 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 34 case distinctions, treesize of input 134 treesize of output 64 [2021-12-14 17:11:05,702 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 41 proven. 83 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-14 17:11:05,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:11:05,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1420383141] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:11:05,749 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-14 17:11:05,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 37] total 72 [2021-12-14 17:11:05,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138191532] [2021-12-14 17:11:05,749 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-14 17:11:05,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2021-12-14 17:11:05,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 17:11:05,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-12-14 17:11:05,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=5497, Unknown=0, NotChecked=0, Total=5852 [2021-12-14 17:11:05,751 INFO L87 Difference]: Start difference. First operand 84 states and 96 transitions. Second operand has 72 states, 68 states have (on average 1.6323529411764706) internal successors, (111), 67 states have internal predecessors, (111), 12 states have call successors, (21), 7 states have call predecessors, (21), 10 states have return successors, (20), 12 states have call predecessors, (20), 11 states have call successors, (20)