./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 ae007674 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-dev-ae00767 [2021-12-28 03:23:22,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:23:22,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:23:22,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:23:22,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:23:22,437 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:23:22,439 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:23:22,444 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:23:22,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:23:22,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:23:22,452 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:23:22,453 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:23:22,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:23:22,455 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:23:22,456 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:23:22,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:23:22,460 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:23:22,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:23:22,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:23:22,469 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:23:22,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:23:22,471 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:23:22,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:23:22,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:23:22,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:23:22,478 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:23:22,478 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:23:22,479 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:23:22,480 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:23:22,480 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:23:22,481 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:23:22,482 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:23:22,483 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:23:22,483 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:23:22,484 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:23:22,484 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:23:22,485 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:23:22,485 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:23:22,485 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:23:22,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:23:22,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:23:22,488 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:23:22,521 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:23:22,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:23:22,522 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:23:22,522 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:23:22,523 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:23:22,523 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:23:22,524 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:23:22,524 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:23:22,524 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:23:22,525 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:23:22,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:23:22,526 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:23:22,526 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:23:22,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:23:22,526 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:23:22,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:23:22,526 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:23:22,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:23:22,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:23:22,527 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:23:22,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:23:22,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:23:22,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:23:22,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:23:22,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:23:22,528 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:23:22,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:23:22,528 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:23:22,528 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:23:22,528 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:23:22,529 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5db0d3c47797ff0a215821e8d5fa38ab9190be93d125d3ffd24136b371560f6c [2021-12-28 03:23:22,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:23:22,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:23:22,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:23:22,771 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:23:22,771 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:23:22,772 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2021-12-28 03:23:22,826 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d2a0ff36/95c7527ca63e43438dbe70f1d629698d/FLAG35eda27f0 [2021-12-28 03:23:23,399 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:23:23,400 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2021-12-28 03:23:23,420 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d2a0ff36/95c7527ca63e43438dbe70f1d629698d/FLAG35eda27f0 [2021-12-28 03:23:23,800 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d2a0ff36/95c7527ca63e43438dbe70f1d629698d [2021-12-28 03:23:23,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:23:23,802 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:23:23,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:23:23,804 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:23:23,806 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:23:23,807 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:23:23" (1/1) ... [2021-12-28 03:23:23,807 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@723bebf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:23:23, skipping insertion in model container [2021-12-28 03:23:23,808 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:23:23" (1/1) ... [2021-12-28 03:23:23,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:23:23,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:23:24,047 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] [2021-12-28 03:23:24,065 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] [2021-12-28 03:23:24,379 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:24,380 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:24,380 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:24,381 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:24,382 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:24,397 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:24,397 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:24,402 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:24,403 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:24,404 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:24,405 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:24,405 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:24,405 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:24,510 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:23:24,511 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:23:24,511 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:23:24,512 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:23:24,513 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:23:24,513 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:23:24,514 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:23:24,514 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:23:24,515 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:23:24,515 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:23:24,585 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:23:24,602 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:23:24,624 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] [2021-12-28 03:23:24,626 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] [2021-12-28 03:23:24,656 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:24,656 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:24,656 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:24,657 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:24,657 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:24,661 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:24,662 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:24,662 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:24,662 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:24,663 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:24,664 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:24,664 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:24,664 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:24,680 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:23:24,681 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:23:24,681 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:23:24,682 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:23:24,682 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:23:24,682 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:23:24,683 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:23:24,683 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:23:24,683 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:23:24,684 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:23:24,694 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:23:24,800 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:23:24,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:23:24 WrapperNode [2021-12-28 03:23:24,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:23:24,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:23:24,802 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:23:24,802 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:23:24,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:23:24" (1/1) ... [2021-12-28 03:23:24,854 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:23:24" (1/1) ... [2021-12-28 03:23:24,888 INFO L137 Inliner]: procedures = 592, calls = 609, calls flagged for inlining = 38, calls inlined = 6, statements flattened = 85 [2021-12-28 03:23:24,888 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:23:24,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:23:24,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:23:24,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:23:24,894 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:23:24" (1/1) ... [2021-12-28 03:23:24,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:23:24" (1/1) ... [2021-12-28 03:23:24,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:23:24" (1/1) ... [2021-12-28 03:23:24,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:23:24" (1/1) ... [2021-12-28 03:23:24,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:23:24" (1/1) ... [2021-12-28 03:23:24,908 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:23:24" (1/1) ... [2021-12-28 03:23:24,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:23:24" (1/1) ... [2021-12-28 03:23:24,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:23:24,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:23:24,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:23:24,914 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:23:24,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:23:24" (1/1) ... [2021-12-28 03:23:24,920 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:23:24,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:23:24,940 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) [2021-12-28 03:23:24,966 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 [2021-12-28 03:23:24,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:23:24,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:23:24,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-28 03:23:24,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-28 03:23:24,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:23:24,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:23:24,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:23:24,988 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 03:23:24,988 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 03:23:24,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:23:24,989 INFO L130 BoogieDeclarations]: Found specification of procedure assert_all_bytes_are [2021-12-28 03:23:24,989 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_all_bytes_are [2021-12-28 03:23:24,990 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-28 03:23:24,990 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-28 03:23:24,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:23:24,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:23:25,180 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:23:25,181 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:23:25,333 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:23:25,338 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:23:25,338 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-28 03:23:25,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:23:25 BoogieIcfgContainer [2021-12-28 03:23:25,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:23:25,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:23:25,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:23:25,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:23:25,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:23:23" (1/3) ... [2021-12-28 03:23:25,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@503e1975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:23:25, skipping insertion in model container [2021-12-28 03:23:25,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:23:24" (2/3) ... [2021-12-28 03:23:25,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@503e1975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:23:25, skipping insertion in model container [2021-12-28 03:23:25,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:23:25" (3/3) ... [2021-12-28 03:23:25,345 INFO L111 eAbstractionObserver]: Analyzing ICFG memset_override_0_harness.i [2021-12-28 03:23:25,348 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:23:25,348 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:23:25,378 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:23:25,383 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 [2021-12-28 03:23:25,383 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:23:25,395 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) [2021-12-28 03:23:25,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-28 03:23:25,400 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:23:25,400 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] [2021-12-28 03:23:25,401 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:23:25,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:23:25,407 INFO L85 PathProgramCache]: Analyzing trace with hash 16590849, now seen corresponding path program 1 times [2021-12-28 03:23:25,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:23:25,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921762006] [2021-12-28 03:23:25,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:23:25,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:23:25,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:25,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:23:25,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:25,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:23:25,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:25,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 03:23:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:25,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-28 03:23:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:25,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 03:23:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:25,721 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-28 03:23:25,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:23:25,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921762006] [2021-12-28 03:23:25,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921762006] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:23:25,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:23:25,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 03:23:25,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120217993] [2021-12-28 03:23:25,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:23:25,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-28 03:23:25,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:23:25,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-28 03:23:25,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-28 03:23:25,746 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) [2021-12-28 03:23:25,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:23:25,763 INFO L93 Difference]: Finished difference Result 117 states and 167 transitions. [2021-12-28 03:23:25,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-28 03:23:25,765 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 [2021-12-28 03:23:25,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:23:25,772 INFO L225 Difference]: With dead ends: 117 [2021-12-28 03:23:25,772 INFO L226 Difference]: Without dead ends: 52 [2021-12-28 03:23:25,776 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 [2021-12-28 03:23:25,781 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 [2021-12-28 03:23:25,785 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] [2021-12-28 03:23:25,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-12-28 03:23:25,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-12-28 03:23:25,819 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) [2021-12-28 03:23:25,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2021-12-28 03:23:25,824 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 36 [2021-12-28 03:23:25,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:23:25,824 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2021-12-28 03:23:25,824 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) [2021-12-28 03:23:25,824 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2021-12-28 03:23:25,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-28 03:23:25,826 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:23:25,827 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] [2021-12-28 03:23:25,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:23:25,827 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:23:25,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:23:25,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1271235587, now seen corresponding path program 1 times [2021-12-28 03:23:25,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:23:25,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499188216] [2021-12-28 03:23:25,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:23:25,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:23:25,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:26,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:23:26,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:26,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:23:26,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:26,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-28 03:23:26,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:26,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-28 03:23:26,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:26,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 03:23:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:26,219 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-28 03:23:26,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:23:26,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499188216] [2021-12-28 03:23:26,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499188216] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:23:26,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253384670] [2021-12-28 03:23:26,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:23:26,222 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:23:26,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:23:26,224 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) [2021-12-28 03:23:26,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 03:23:26,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:26,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-28 03:23:26,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:23:26,641 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-28 03:23:26,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:23:26,913 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-28 03:23:26,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253384670] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:23:26,914 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 03:23:26,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 14 [2021-12-28 03:23:26,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423037776] [2021-12-28 03:23:26,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 03:23:26,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-28 03:23:26,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:23:26,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-28 03:23:26,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-12-28 03:23:26,916 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) [2021-12-28 03:23:27,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:23:27,092 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2021-12-28 03:23:27,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:23:27,092 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 [2021-12-28 03:23:27,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:23:27,095 INFO L225 Difference]: With dead ends: 58 [2021-12-28 03:23:27,095 INFO L226 Difference]: Without dead ends: 56 [2021-12-28 03:23:27,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 69 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-12-28 03:23:27,098 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 [2021-12-28 03:23:27,098 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] [2021-12-28 03:23:27,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-28 03:23:27,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-12-28 03:23:27,107 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) [2021-12-28 03:23:27,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2021-12-28 03:23:27,108 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 36 [2021-12-28 03:23:27,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:23:27,109 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2021-12-28 03:23:27,109 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) [2021-12-28 03:23:27,109 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2021-12-28 03:23:27,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-28 03:23:27,110 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:23:27,110 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] [2021-12-28 03:23:27,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-28 03:23:27,328 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 [2021-12-28 03:23:27,328 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:23:27,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:23:27,329 INFO L85 PathProgramCache]: Analyzing trace with hash 2010040638, now seen corresponding path program 1 times [2021-12-28 03:23:27,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:23:27,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430777681] [2021-12-28 03:23:27,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:23:27,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:23:27,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 03:23:27,374 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 03:23:27,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 03:23:27,448 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 03:23:27,448 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-28 03:23:27,449 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-28 03:23:27,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 03:23:27,453 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-28 03:23:27,455 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-28 03:23:27,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.12 03:23:27 BoogieIcfgContainer [2021-12-28 03:23:27,475 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-28 03:23:27,476 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-28 03:23:27,476 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-28 03:23:27,476 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-28 03:23:27,476 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:23:25" (3/4) ... [2021-12-28 03:23:27,478 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-28 03:23:27,478 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-28 03:23:27,479 INFO L158 Benchmark]: Toolchain (without parser) took 3676.40ms. Allocated memory was 69.2MB in the beginning and 132.1MB in the end (delta: 62.9MB). Free memory was 50.9MB in the beginning and 95.6MB in the end (delta: -44.7MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. [2021-12-28 03:23:27,479 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 52.4MB. Free memory was 34.3MB in the beginning and 34.2MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 03:23:27,480 INFO L158 Benchmark]: CACSL2BoogieTranslator took 997.87ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 50.7MB in the beginning and 53.2MB in the end (delta: -2.5MB). Peak memory consumption was 35.6MB. Max. memory is 16.1GB. [2021-12-28 03:23:27,480 INFO L158 Benchmark]: Boogie Procedure Inliner took 86.33ms. Allocated memory is still 83.9MB. Free memory was 53.2MB in the beginning and 48.6MB in the end (delta: 4.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-28 03:23:27,480 INFO L158 Benchmark]: Boogie Preprocessor took 24.85ms. Allocated memory is still 83.9MB. Free memory was 48.6MB in the beginning and 46.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 03:23:27,481 INFO L158 Benchmark]: RCFGBuilder took 425.87ms. Allocated memory is still 83.9MB. Free memory was 46.5MB in the beginning and 48.4MB in the end (delta: -2.0MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. [2021-12-28 03:23:27,481 INFO L158 Benchmark]: TraceAbstraction took 2134.25ms. Allocated memory was 83.9MB in the beginning and 132.1MB in the end (delta: 48.2MB). Free memory was 47.6MB in the beginning and 95.6MB in the end (delta: -47.9MB). Peak memory consumption was 36.3MB. Max. memory is 16.1GB. [2021-12-28 03:23:27,481 INFO L158 Benchmark]: Witness Printer took 2.98ms. Allocated memory is still 132.1MB. Free memory is still 95.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 03:23:27,483 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 52.4MB. Free memory was 34.3MB in the beginning and 34.2MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 997.87ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 50.7MB in the beginning and 53.2MB in the end (delta: -2.5MB). Peak memory consumption was 35.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 86.33ms. Allocated memory is still 83.9MB. Free memory was 53.2MB in the beginning and 48.6MB in the end (delta: 4.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.85ms. Allocated memory is still 83.9MB. Free memory was 48.6MB in the beginning and 46.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 425.87ms. Allocated memory is still 83.9MB. Free memory was 46.5MB in the beginning and 48.4MB in the end (delta: -2.0MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2134.25ms. Allocated memory was 83.9MB in the beginning and 132.1MB in the end (delta: 48.2MB). Free memory was 47.6MB in the beginning and 95.6MB in the end (delta: -47.9MB). Peak memory consumption was 36.3MB. Max. memory is 16.1GB. * Witness Printer took 2.98ms. Allocated memory is still 132.1MB. Free memory is still 95.6MB. 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: 2.1s, OverallIterations: 3, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, 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, 0.1s 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, 1.0s InterpolantComputationTime, 150 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 445 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 [2021-12-28 03:23:27,511 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-dev-ae00767 [2021-12-28 03:23:29,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:23:29,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:23:29,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:23:29,227 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:23:29,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:23:29,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:23:29,235 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:23:29,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:23:29,240 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:23:29,241 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:23:29,244 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:23:29,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:23:29,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:23:29,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:23:29,257 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:23:29,258 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:23:29,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:23:29,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:23:29,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:23:29,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:23:29,264 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:23:29,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:23:29,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:23:29,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:23:29,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:23:29,270 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:23:29,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:23:29,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:23:29,272 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:23:29,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:23:29,273 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:23:29,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:23:29,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:23:29,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:23:29,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:23:29,277 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:23:29,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:23:29,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:23:29,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:23:29,279 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:23:29,282 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-12-28 03:23:29,307 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:23:29,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:23:29,308 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:23:29,308 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:23:29,309 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:23:29,309 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:23:29,310 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:23:29,311 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:23:29,311 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:23:29,311 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:23:29,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:23:29,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:23:29,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:23:29,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:23:29,312 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-28 03:23:29,312 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-28 03:23:29,312 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-28 03:23:29,313 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:23:29,313 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:23:29,313 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:23:29,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:23:29,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:23:29,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:23:29,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:23:29,314 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:23:29,314 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:23:29,314 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:23:29,314 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-28 03:23:29,314 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-28 03:23:29,315 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:23:29,315 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:23:29,315 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:23:29,315 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-28 03:23:29,315 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5db0d3c47797ff0a215821e8d5fa38ab9190be93d125d3ffd24136b371560f6c [2021-12-28 03:23:29,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:23:29,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:23:29,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:23:29,609 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:23:29,609 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:23:29,611 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2021-12-28 03:23:29,667 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/182308569/783ad2145f604af5abc95f3f177ae919/FLAG5150348e5 [2021-12-28 03:23:30,166 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:23:30,166 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2021-12-28 03:23:30,192 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/182308569/783ad2145f604af5abc95f3f177ae919/FLAG5150348e5 [2021-12-28 03:23:30,692 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/182308569/783ad2145f604af5abc95f3f177ae919 [2021-12-28 03:23:30,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:23:30,697 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:23:30,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:23:30,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:23:30,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:23:30,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:23:30" (1/1) ... [2021-12-28 03:23:30,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59dccbf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:23:30, skipping insertion in model container [2021-12-28 03:23:30,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:23:30" (1/1) ... [2021-12-28 03:23:30,716 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:23:30,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:23:30,952 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] [2021-12-28 03:23:30,957 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] [2021-12-28 03:23:31,417 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:31,418 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:31,418 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:31,419 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:31,419 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:31,428 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:31,428 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:31,429 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:31,429 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:31,431 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:31,431 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:31,432 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:31,432 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:31,538 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:23:31,540 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:23:31,548 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:23:31,549 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:23:31,551 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:23:31,552 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:23:31,554 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:23:31,557 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:23:31,557 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:23:31,559 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:23:31,617 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:23:31,633 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-28 03:23:31,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:23:31,658 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] [2021-12-28 03:23:31,659 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] [2021-12-28 03:23:31,728 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:31,731 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:31,732 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:31,732 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:31,733 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:31,739 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:31,740 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:31,741 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:31,741 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:31,742 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:31,744 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:31,744 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:31,744 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:31,760 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:23:31,766 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:23:31,767 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:23:31,768 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:23:31,768 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:23:31,769 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:23:31,769 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:23:31,769 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:23:31,770 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:23:31,770 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:23:31,803 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:23:31,811 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:23:31,829 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] [2021-12-28 03:23:31,835 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] [2021-12-28 03:23:31,867 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:31,868 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:31,868 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:31,868 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:31,868 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:31,872 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:31,873 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:31,874 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:31,874 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:31,874 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:31,875 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:31,875 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:31,875 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:23:31,891 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:23:31,892 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:23:31,892 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:23:31,893 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:23:31,894 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:23:31,895 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:23:31,895 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:23:31,896 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:23:31,896 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:23:31,897 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:23:31,916 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:23:32,044 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:23:32,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:23:32 WrapperNode [2021-12-28 03:23:32,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:23:32,046 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:23:32,046 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:23:32,046 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:23:32,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:23:32" (1/1) ... [2021-12-28 03:23:32,113 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:23:32" (1/1) ... [2021-12-28 03:23:32,142 INFO L137 Inliner]: procedures = 611, calls = 609, calls flagged for inlining = 38, calls inlined = 6, statements flattened = 85 [2021-12-28 03:23:32,148 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:23:32,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:23:32,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:23:32,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:23:32,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:23:32" (1/1) ... [2021-12-28 03:23:32,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:23:32" (1/1) ... [2021-12-28 03:23:32,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:23:32" (1/1) ... [2021-12-28 03:23:32,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:23:32" (1/1) ... [2021-12-28 03:23:32,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:23:32" (1/1) ... [2021-12-28 03:23:32,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:23:32" (1/1) ... [2021-12-28 03:23:32,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:23:32" (1/1) ... [2021-12-28 03:23:32,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:23:32,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:23:32,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:23:32,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:23:32,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:23:32" (1/1) ... [2021-12-28 03:23:32,216 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:23:32,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:23:32,261 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) [2021-12-28 03:23:32,281 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 [2021-12-28 03:23:32,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:23:32,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-28 03:23:32,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-28 03:23:32,289 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-28 03:23:32,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:23:32,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:23:32,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:23:32,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-28 03:23:32,289 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 03:23:32,289 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 03:23:32,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:23:32,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-12-28 03:23:32,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-28 03:23:32,290 INFO L130 BoogieDeclarations]: Found specification of procedure assert_all_bytes_are [2021-12-28 03:23:32,290 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_all_bytes_are [2021-12-28 03:23:32,290 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-28 03:23:32,290 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-28 03:23:32,450 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:23:32,452 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:23:32,717 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:23:32,724 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:23:32,725 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-28 03:23:32,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:23:32 BoogieIcfgContainer [2021-12-28 03:23:32,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:23:32,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:23:32,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:23:32,730 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:23:32,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:23:30" (1/3) ... [2021-12-28 03:23:32,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f09d575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:23:32, skipping insertion in model container [2021-12-28 03:23:32,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:23:32" (2/3) ... [2021-12-28 03:23:32,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f09d575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:23:32, skipping insertion in model container [2021-12-28 03:23:32,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:23:32" (3/3) ... [2021-12-28 03:23:32,733 INFO L111 eAbstractionObserver]: Analyzing ICFG memset_override_0_harness.i [2021-12-28 03:23:32,739 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:23:32,739 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:23:32,787 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:23:32,793 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 [2021-12-28 03:23:32,794 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:23:32,807 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) [2021-12-28 03:23:32,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-28 03:23:32,813 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:23:32,816 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] [2021-12-28 03:23:32,816 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:23:32,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:23:32,821 INFO L85 PathProgramCache]: Analyzing trace with hash 16590849, now seen corresponding path program 1 times [2021-12-28 03:23:32,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 03:23:32,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [655585518] [2021-12-28 03:23:32,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:23:32,834 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 03:23:32,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 03:23:32,840 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) [2021-12-28 03:23:32,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-28 03:23:32,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:32,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-28 03:23:32,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:23:33,071 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-28 03:23:33,071 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:23:33,072 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 03:23:33,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [655585518] [2021-12-28 03:23:33,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [655585518] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:23:33,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:23:33,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 03:23:33,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795814974] [2021-12-28 03:23:33,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:23:33,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-28 03:23:33,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 03:23:33,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-28 03:23:33,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-28 03:23:33,116 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) [2021-12-28 03:23:33,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:23:33,134 INFO L93 Difference]: Finished difference Result 117 states and 167 transitions. [2021-12-28 03:23:33,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-28 03:23:33,136 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 [2021-12-28 03:23:33,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:23:33,141 INFO L225 Difference]: With dead ends: 117 [2021-12-28 03:23:33,141 INFO L226 Difference]: Without dead ends: 52 [2021-12-28 03:23:33,144 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 [2021-12-28 03:23:33,146 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 [2021-12-28 03:23:33,147 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] [2021-12-28 03:23:33,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-12-28 03:23:33,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-12-28 03:23:33,188 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) [2021-12-28 03:23:33,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2021-12-28 03:23:33,191 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 36 [2021-12-28 03:23:33,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:23:33,192 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2021-12-28 03:23:33,192 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) [2021-12-28 03:23:33,192 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2021-12-28 03:23:33,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-28 03:23:33,193 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:23:33,194 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] [2021-12-28 03:23:33,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-28 03:23:33,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 03:23:33,404 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:23:33,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:23:33,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1271235587, now seen corresponding path program 1 times [2021-12-28 03:23:33,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 03:23:33,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1419185834] [2021-12-28 03:23:33,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:23:33,406 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 03:23:33,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 03:23:33,407 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) [2021-12-28 03:23:33,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-28 03:23:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:33,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-28 03:23:33,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:23:33,620 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-28 03:23:33,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:23:33,735 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-28 03:23:33,736 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 03:23:33,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1419185834] [2021-12-28 03:23:33,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1419185834] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:23:33,736 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:23:33,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-12-28 03:23:33,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021947261] [2021-12-28 03:23:33,736 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 03:23:33,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-28 03:23:33,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 03:23:33,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-28 03:23:33,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-28 03:23:33,738 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) [2021-12-28 03:23:33,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:23:33,866 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2021-12-28 03:23:33,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:23:33,866 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 [2021-12-28 03:23:33,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:23:33,869 INFO L225 Difference]: With dead ends: 58 [2021-12-28 03:23:33,870 INFO L226 Difference]: Without dead ends: 56 [2021-12-28 03:23:33,871 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 [2021-12-28 03:23:33,872 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 [2021-12-28 03:23:33,872 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] [2021-12-28 03:23:33,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-28 03:23:33,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-12-28 03:23:33,886 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) [2021-12-28 03:23:33,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2021-12-28 03:23:33,892 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 36 [2021-12-28 03:23:33,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:23:33,893 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2021-12-28 03:23:33,893 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) [2021-12-28 03:23:33,893 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2021-12-28 03:23:33,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-28 03:23:33,896 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:23:33,896 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] [2021-12-28 03:23:33,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-28 03:23:34,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 03:23:34,107 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:23:34,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:23:34,107 INFO L85 PathProgramCache]: Analyzing trace with hash 2010040638, now seen corresponding path program 1 times [2021-12-28 03:23:34,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 03:23:34,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [620379409] [2021-12-28 03:23:34,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:23:34,108 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 03:23:34,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 03:23:34,109 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) [2021-12-28 03:23:34,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-28 03:23:34,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:34,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-28 03:23:34,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:23:34,441 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-28 03:23:34,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:23:35,744 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-28 03:23:35,744 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 03:23:35,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [620379409] [2021-12-28 03:23:35,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [620379409] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:23:35,745 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:23:35,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-12-28 03:23:35,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870918679] [2021-12-28 03:23:35,745 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 03:23:35,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-28 03:23:35,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 03:23:35,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-28 03:23:35,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=149, Unknown=1, NotChecked=0, Total=182 [2021-12-28 03:23:35,746 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) [2021-12-28 03:23:35,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:23:35,909 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2021-12-28 03:23:35,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 03:23:35,910 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 [2021-12-28 03:23:35,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:23:35,910 INFO L225 Difference]: With dead ends: 62 [2021-12-28 03:23:35,911 INFO L226 Difference]: Without dead ends: 60 [2021-12-28 03:23:35,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=223, Unknown=1, NotChecked=0, Total=272 [2021-12-28 03:23:35,912 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 13 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:23:35,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 502 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 29 Unchecked, 0.1s Time] [2021-12-28 03:23:35,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-12-28 03:23:35,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-12-28 03:23:35,917 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) [2021-12-28 03:23:35,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2021-12-28 03:23:35,918 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 42 [2021-12-28 03:23:35,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:23:35,918 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2021-12-28 03:23:35,918 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) [2021-12-28 03:23:35,918 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2021-12-28 03:23:35,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-28 03:23:35,919 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:23:35,919 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] [2021-12-28 03:23:35,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-28 03:23:36,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 03:23:36,130 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:23:36,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:23:36,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1110629482, now seen corresponding path program 1 times [2021-12-28 03:23:36,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 03:23:36,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1871671138] [2021-12-28 03:23:36,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:23:36,132 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 03:23:36,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 03:23:36,133 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) [2021-12-28 03:23:36,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-28 03:23:36,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:36,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-28 03:23:36,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:23:36,381 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-12-28 03:23:36,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:23:36,382 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 03:23:36,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1871671138] [2021-12-28 03:23:36,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1871671138] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:23:36,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:23:36,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:23:36,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742856577] [2021-12-28 03:23:36,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:23:36,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:23:36,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 03:23:36,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:23:36,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:23:36,389 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) [2021-12-28 03:23:36,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:23:36,462 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2021-12-28 03:23:36,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:23:36,462 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 [2021-12-28 03:23:36,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:23:36,463 INFO L225 Difference]: With dead ends: 66 [2021-12-28 03:23:36,463 INFO L226 Difference]: Without dead ends: 64 [2021-12-28 03:23:36,463 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 [2021-12-28 03:23:36,464 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 24 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:23:36,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 256 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:23:36,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-12-28 03:23:36,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-12-28 03:23:36,468 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) [2021-12-28 03:23:36,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2021-12-28 03:23:36,469 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 51 [2021-12-28 03:23:36,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:23:36,469 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2021-12-28 03:23:36,469 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) [2021-12-28 03:23:36,469 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2021-12-28 03:23:36,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-28 03:23:36,470 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:23:36,471 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] [2021-12-28 03:23:36,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-28 03:23:36,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 03:23:36,684 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:23:36,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:23:36,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1132287315, now seen corresponding path program 1 times [2021-12-28 03:23:36,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 03:23:36,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1678103866] [2021-12-28 03:23:36,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:23:36,686 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 03:23:36,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 03:23:36,686 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) [2021-12-28 03:23:36,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-28 03:23:36,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:36,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-28 03:23:36,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:23:37,037 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-28 03:23:37,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:23:37,174 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-28 03:23:37,174 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 03:23:37,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1678103866] [2021-12-28 03:23:37,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1678103866] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-28 03:23:37,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:23:37,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2021-12-28 03:23:37,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730803671] [2021-12-28 03:23:37,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:23:37,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:23:37,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 03:23:37,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:23:37,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-12-28 03:23:37,176 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) [2021-12-28 03:23:37,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:23:37,252 INFO L93 Difference]: Finished difference Result 107 states and 126 transitions. [2021-12-28 03:23:37,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:23:37,253 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 [2021-12-28 03:23:37,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:23:37,253 INFO L225 Difference]: With dead ends: 107 [2021-12-28 03:23:37,254 INFO L226 Difference]: Without dead ends: 79 [2021-12-28 03:23:37,254 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 [2021-12-28 03:23:37,254 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 30 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2021-12-28 03:23:37,255 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] [2021-12-28 03:23:37,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-12-28 03:23:37,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2021-12-28 03:23:37,262 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) [2021-12-28 03:23:37,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 93 transitions. [2021-12-28 03:23:37,262 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 93 transitions. Word has length 68 [2021-12-28 03:23:37,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:23:37,263 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 93 transitions. [2021-12-28 03:23:37,263 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) [2021-12-28 03:23:37,263 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 93 transitions. [2021-12-28 03:23:37,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-28 03:23:37,264 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:23:37,264 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] [2021-12-28 03:23:37,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-28 03:23:37,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 03:23:37,475 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:23:37,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:23:37,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1524731977, now seen corresponding path program 1 times [2021-12-28 03:23:37,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 03:23:37,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250113374] [2021-12-28 03:23:37,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:23:37,476 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 03:23:37,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 03:23:37,477 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) [2021-12-28 03:23:37,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-28 03:23:37,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:37,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-28 03:23:37,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:23:37,782 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 38 proven. 6 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-28 03:23:37,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:23:37,914 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-28 03:23:37,915 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 03:23:37,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250113374] [2021-12-28 03:23:37,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [250113374] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-28 03:23:37,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:23:37,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-12-28 03:23:37,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199293246] [2021-12-28 03:23:37,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:23:37,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:23:37,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 03:23:37,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:23:37,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-28 03:23:37,916 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) [2021-12-28 03:23:37,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:23:37,940 INFO L93 Difference]: Finished difference Result 131 states and 153 transitions. [2021-12-28 03:23:37,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:23:37,944 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 [2021-12-28 03:23:37,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:23:37,945 INFO L225 Difference]: With dead ends: 131 [2021-12-28 03:23:37,945 INFO L226 Difference]: Without dead ends: 78 [2021-12-28 03:23:37,945 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 [2021-12-28 03:23:37,946 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 [2021-12-28 03:23:37,946 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] [2021-12-28 03:23:37,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-12-28 03:23:37,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-12-28 03:23:37,952 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) [2021-12-28 03:23:37,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 94 transitions. [2021-12-28 03:23:37,952 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 94 transitions. Word has length 69 [2021-12-28 03:23:37,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:23:37,953 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 94 transitions. [2021-12-28 03:23:37,953 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) [2021-12-28 03:23:37,953 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 94 transitions. [2021-12-28 03:23:37,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-28 03:23:37,954 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:23:37,954 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] [2021-12-28 03:23:37,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-28 03:23:38,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 03:23:38,166 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:23:38,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:23:38,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1383518092, now seen corresponding path program 1 times [2021-12-28 03:23:38,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 03:23:38,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [47165916] [2021-12-28 03:23:38,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:23:38,167 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 03:23:38,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 03:23:38,169 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) [2021-12-28 03:23:38,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-28 03:23:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:38,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-28 03:23:38,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:23:38,530 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-28 03:23:38,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:23:38,742 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-28 03:23:38,743 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 03:23:38,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [47165916] [2021-12-28 03:23:38,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [47165916] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-28 03:23:38,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:23:38,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 13 [2021-12-28 03:23:38,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613476418] [2021-12-28 03:23:38,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:23:38,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:23:38,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 03:23:38,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:23:38,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-12-28 03:23:38,744 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) [2021-12-28 03:23:38,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:23:38,833 INFO L93 Difference]: Finished difference Result 100 states and 115 transitions. [2021-12-28 03:23:38,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:23:38,834 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 [2021-12-28 03:23:38,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:23:38,835 INFO L225 Difference]: With dead ends: 100 [2021-12-28 03:23:38,835 INFO L226 Difference]: Without dead ends: 65 [2021-12-28 03:23:38,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-12-28 03:23:38,836 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 [2021-12-28 03:23:38,836 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] [2021-12-28 03:23:38,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-12-28 03:23:38,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-12-28 03:23:38,841 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) [2021-12-28 03:23:38,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2021-12-28 03:23:38,841 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 72 [2021-12-28 03:23:38,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:23:38,841 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2021-12-28 03:23:38,842 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) [2021-12-28 03:23:38,842 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2021-12-28 03:23:38,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-28 03:23:38,842 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:23:38,843 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] [2021-12-28 03:23:38,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-28 03:23:39,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 03:23:39,053 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:23:39,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:23:39,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1069315495, now seen corresponding path program 1 times [2021-12-28 03:23:39,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 03:23:39,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2012517239] [2021-12-28 03:23:39,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:23:39,054 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 03:23:39,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 03:23:39,054 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) [2021-12-28 03:23:39,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-28 03:23:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:39,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-28 03:23:39,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:23:39,430 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 38 proven. 7 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-28 03:23:39,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:23:39,738 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-12-28 03:23:39,739 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 03:23:39,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2012517239] [2021-12-28 03:23:39,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2012517239] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:23:39,739 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:23:39,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2021-12-28 03:23:39,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61644028] [2021-12-28 03:23:39,739 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 03:23:39,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-28 03:23:39,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 03:23:39,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-28 03:23:39,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-12-28 03:23:39,740 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) [2021-12-28 03:23:39,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:23:39,874 INFO L93 Difference]: Finished difference Result 122 states and 139 transitions. [2021-12-28 03:23:39,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-28 03:23:39,875 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 [2021-12-28 03:23:39,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:23:39,876 INFO L225 Difference]: With dead ends: 122 [2021-12-28 03:23:39,876 INFO L226 Difference]: Without dead ends: 69 [2021-12-28 03:23:39,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-12-28 03:23:39,877 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 [2021-12-28 03:23:39,877 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] [2021-12-28 03:23:39,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-12-28 03:23:39,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-12-28 03:23:39,882 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) [2021-12-28 03:23:39,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2021-12-28 03:23:39,882 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 71 [2021-12-28 03:23:39,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:23:39,883 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2021-12-28 03:23:39,883 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) [2021-12-28 03:23:39,883 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2021-12-28 03:23:39,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-28 03:23:39,884 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:23:39,884 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] [2021-12-28 03:23:39,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-28 03:23:40,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 03:23:40,099 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:23:40,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:23:40,100 INFO L85 PathProgramCache]: Analyzing trace with hash 511671837, now seen corresponding path program 2 times [2021-12-28 03:23:40,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 03:23:40,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [14045555] [2021-12-28 03:23:40,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:23:40,101 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 03:23:40,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 03:23:40,101 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) [2021-12-28 03:23:40,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-28 03:23:40,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 03:23:40,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:23:40,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-28 03:23:40,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:23:40,645 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 38 proven. 15 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-28 03:23:40,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:23:41,171 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-12-28 03:23:41,171 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 03:23:41,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [14045555] [2021-12-28 03:23:41,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [14045555] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:23:41,171 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:23:41,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2021-12-28 03:23:41,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172674237] [2021-12-28 03:23:41,172 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 03:23:41,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-28 03:23:41,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 03:23:41,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-28 03:23:41,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:23:41,173 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) [2021-12-28 03:23:41,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:23:41,740 INFO L93 Difference]: Finished difference Result 130 states and 149 transitions. [2021-12-28 03:23:41,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-28 03:23:41,741 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 [2021-12-28 03:23:41,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:23:41,742 INFO L225 Difference]: With dead ends: 130 [2021-12-28 03:23:41,742 INFO L226 Difference]: Without dead ends: 77 [2021-12-28 03:23:41,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-28 03:23:41,743 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 [2021-12-28 03:23:41,743 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] [2021-12-28 03:23:41,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-12-28 03:23:41,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-12-28 03:23:41,748 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) [2021-12-28 03:23:41,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2021-12-28 03:23:41,748 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 75 [2021-12-28 03:23:41,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:23:41,749 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2021-12-28 03:23:41,749 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) [2021-12-28 03:23:41,749 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2021-12-28 03:23:41,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-28 03:23:41,750 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:23:41,750 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] [2021-12-28 03:23:41,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-12-28 03:23:41,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 03:23:41,960 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:23:41,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:23:41,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1085153371, now seen corresponding path program 3 times [2021-12-28 03:23:41,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 03:23:41,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1869655125] [2021-12-28 03:23:41,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-28 03:23:41,961 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 03:23:41,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 03:23:41,962 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) [2021-12-28 03:23:41,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-28 03:23:42,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-28 03:23:42,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:23:42,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-28 03:23:42,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:23:42,286 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 29 proven. 3 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-12-28 03:23:42,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:23:42,635 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-12-28 03:23:42,636 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 03:23:42,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1869655125] [2021-12-28 03:23:42,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1869655125] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:23:42,636 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:23:42,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-12-28 03:23:42,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303449023] [2021-12-28 03:23:42,637 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 03:23:42,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-28 03:23:42,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 03:23:42,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-28 03:23:42,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-12-28 03:23:42,638 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) [2021-12-28 03:23:43,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:23:43,332 INFO L93 Difference]: Finished difference Result 113 states and 128 transitions. [2021-12-28 03:23:43,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 03:23:43,333 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 [2021-12-28 03:23:43,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:23:43,334 INFO L225 Difference]: With dead ends: 113 [2021-12-28 03:23:43,334 INFO L226 Difference]: Without dead ends: 85 [2021-12-28 03:23:43,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2021-12-28 03:23:43,335 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 61 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 03:23:43,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 445 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 111 Invalid, 0 Unknown, 16 Unchecked, 0.5s Time] [2021-12-28 03:23:43,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-12-28 03:23:43,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 82. [2021-12-28 03:23:43,340 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) [2021-12-28 03:23:43,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 94 transitions. [2021-12-28 03:23:43,340 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 94 transitions. Word has length 83 [2021-12-28 03:23:43,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:23:43,341 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 94 transitions. [2021-12-28 03:23:43,341 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) [2021-12-28 03:23:43,341 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 94 transitions. [2021-12-28 03:23:43,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-28 03:23:43,342 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:23:43,342 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] [2021-12-28 03:23:43,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-12-28 03:23:43,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 03:23:43,550 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:23:43,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:23:43,550 INFO L85 PathProgramCache]: Analyzing trace with hash -2075883641, now seen corresponding path program 1 times [2021-12-28 03:23:43,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 03:23:43,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273828390] [2021-12-28 03:23:43,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:23:43,551 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 03:23:43,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 03:23:43,557 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) [2021-12-28 03:23:43,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-28 03:23:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:23:43,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-28 03:23:43,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:23:44,451 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 38 proven. 55 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-28 03:23:44,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:23:45,344 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 9 proven. 61 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-12-28 03:23:45,344 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 03:23:45,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273828390] [2021-12-28 03:23:45,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1273828390] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:23:45,344 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:23:45,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 26 [2021-12-28 03:23:45,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161643109] [2021-12-28 03:23:45,344 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 03:23:45,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-28 03:23:45,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 03:23:45,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-28 03:23:45,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2021-12-28 03:23:45,346 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) [2021-12-28 03:23:45,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:23:45,566 INFO L93 Difference]: Finished difference Result 142 states and 162 transitions. [2021-12-28 03:23:45,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-28 03:23:45,567 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 [2021-12-28 03:23:45,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:23:45,568 INFO L225 Difference]: With dead ends: 142 [2021-12-28 03:23:45,568 INFO L226 Difference]: Without dead ends: 84 [2021-12-28 03:23:45,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2021-12-28 03:23:45,569 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 6 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2021-12-28 03:23:45,569 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] [2021-12-28 03:23:45,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-12-28 03:23:45,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-12-28 03:23:45,574 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) [2021-12-28 03:23:45,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 96 transitions. [2021-12-28 03:23:45,575 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 96 transitions. Word has length 85 [2021-12-28 03:23:45,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:23:45,577 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 96 transitions. [2021-12-28 03:23:45,577 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) [2021-12-28 03:23:45,577 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 96 transitions. [2021-12-28 03:23:45,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-28 03:23:45,579 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:23:45,579 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] [2021-12-28 03:23:45,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-12-28 03:23:45,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 03:23:45,790 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:23:45,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:23:45,791 INFO L85 PathProgramCache]: Analyzing trace with hash 24387113, now seen corresponding path program 2 times [2021-12-28 03:23:45,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 03:23:45,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [921945866] [2021-12-28 03:23:45,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:23:45,791 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 03:23:45,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 03:23:45,792 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) [2021-12-28 03:23:45,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-28 03:23:46,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 03:23:46,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:23:46,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 94 conjunts are in the unsatisfiable core [2021-12-28 03:23:46,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:23:46,578 INFO L387 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 10 treesize of output 8 [2021-12-28 03:23:46,925 INFO L387 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 [2021-12-28 03:23:47,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:47,132 INFO L387 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 [2021-12-28 03:23:47,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:47,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:47,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:47,399 INFO L387 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 [2021-12-28 03:23:47,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:47,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:47,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:47,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:47,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:47,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:47,668 INFO L387 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 [2021-12-28 03:23:48,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,038 INFO L387 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 [2021-12-28 03:23:48,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,443 INFO L387 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 [2021-12-28 03:23:48,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:48,859 INFO L387 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 [2021-12-28 03:23:49,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:49,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:49,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:49,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:49,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:49,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:49,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:49,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:49,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:49,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:49,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:49,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:49,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:49,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:49,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:49,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:49,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:49,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:49,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:49,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:49,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:49,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:49,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:49,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:49,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:49,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:49,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:49,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:49,366 INFO L387 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 [2021-12-28 03:23:52,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:52,255 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-28 03:23:52,256 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-28 03:23:52,256 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-28 03:23:52,256 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-28 03:23:52,257 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-28 03:23:52,257 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-28 03:23:52,257 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-28 03:23:52,264 INFO L387 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 [2021-12-28 03:23:57,431 INFO L353 Elim1Store]: treesize reduction 122, result has 5.4 percent of original size [2021-12-28 03:23:57,432 INFO L387 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 [2021-12-28 03:23:57,597 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 35 proven. 89 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-28 03:23:57,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:23:58,125 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 03:23:58,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [921945866] [2021-12-28 03:23:58,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [921945866] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:23:58,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1082892718] [2021-12-28 03:23:58,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:23:58,126 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-28 03:23:58,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-28 03:23:58,127 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) [2021-12-28 03:23:58,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-12-28 03:23:59,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 03:23:59,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:23:59,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 88 conjunts are in the unsatisfiable core [2021-12-28 03:23:59,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:23:59,117 INFO L387 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 10 treesize of output 8 [2021-12-28 03:23:59,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:23:59,940 INFO L387 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 [2021-12-28 03:24:00,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:00,342 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-28 03:24:00,351 INFO L353 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2021-12-28 03:24:00,351 INFO L387 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 [2021-12-28 03:24:00,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:00,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:00,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:00,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:00,815 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-28 03:24:00,818 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-28 03:24:00,819 INFO L387 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 [2021-12-28 03:24:01,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:01,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:01,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:01,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:01,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:01,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:01,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:01,333 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-28 03:24:01,336 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-28 03:24:01,336 INFO L387 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 [2021-12-28 03:24:01,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:01,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:01,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:01,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:01,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:01,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:01,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:01,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:01,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:01,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:01,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:01,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-28 03:24:01,948 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-28 03:24:01,949 INFO L387 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 [2021-12-28 03:24:02,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:02,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:02,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:02,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:02,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:02,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:02,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:02,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:02,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:02,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:02,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:02,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:02,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:02,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:02,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:02,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:02,667 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-28 03:24:02,670 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-28 03:24:02,670 INFO L387 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 72 treesize of output 86 [2021-12-28 03:24:03,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:03,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:03,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:03,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:03,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:03,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:03,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:03,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:03,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:03,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:03,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:03,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:03,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:03,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:03,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:03,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:03,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:03,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:03,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:03,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:03,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:03,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:03,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-28 03:24:03,519 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-28 03:24:03,519 INFO L387 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 83 treesize of output 100 [2021-12-28 03:24:04,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:04,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:04,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:04,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:04,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:04,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:04,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:04,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:04,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:04,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:04,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:04,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:04,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:04,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:04,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:04,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:04,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:04,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:04,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:04,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:04,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:04,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:04,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:04,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:04,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:04,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:04,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:04,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:04,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:04,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:04,365 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-28 03:24:04,387 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-28 03:24:04,388 INFO L387 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 [2021-12-28 03:24:09,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,952 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-28 03:24:09,952 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-28 03:24:09,952 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-28 03:24:09,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-28 03:24:09,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-28 03:24:09,954 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-28 03:24:09,954 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-28 03:24:09,956 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-28 03:24:09,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:24:09,958 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-28 03:24:09,968 INFO L353 Elim1Store]: treesize reduction 26, result has 21.2 percent of original size [2021-12-28 03:24:09,969 INFO L387 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 [2021-12-28 03:24:17,624 INFO L353 Elim1Store]: treesize reduction 162, result has 4.1 percent of original size [2021-12-28 03:24:17,625 INFO L387 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 [2021-12-28 03:24:17,638 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 41 proven. 83 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-28 03:24:17,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:24:17,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1082892718] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:24:17,689 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:24:17,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 37] total 72 [2021-12-28 03:24:17,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329275650] [2021-12-28 03:24:17,690 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 03:24:17,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2021-12-28 03:24:17,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 03:24:17,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-12-28 03:24:17,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=5497, Unknown=0, NotChecked=0, Total=5852 [2021-12-28 03:24:17,692 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)