./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_table_eq_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/aws_hash_table_eq_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 66d360c8c29bda7e5219dac4b14837aec8d465009822b05f671b68702d836670 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 03:18:33,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:18:33,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:18:33,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:18:33,453 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:18:33,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:18:33,456 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:18:33,459 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:18:33,461 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:18:33,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:18:33,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:18:33,467 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:18:33,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:18:33,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:18:33,470 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:18:33,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:18:33,473 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:18:33,473 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:18:33,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:18:33,479 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:18:33,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:18:33,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:18:33,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:18:33,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:18:33,486 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:18:33,487 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:18:33,487 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:18:33,488 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:18:33,488 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:18:33,489 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:18:33,489 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:18:33,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:18:33,491 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:18:33,491 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:18:33,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:18:33,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:18:33,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:18:33,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:18:33,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:18:33,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:18:33,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:18:33,495 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:18:33,529 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:18:33,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:18:33,530 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:18:33,530 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:18:33,531 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:18:33,531 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:18:33,532 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:18:33,532 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:18:33,533 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:18:33,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:18:33,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:18:33,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:18:33,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:18:33,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:18:33,534 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:18:33,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:18:33,534 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:18:33,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:18:33,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:18:33,535 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:18:33,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:18:33,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:18:33,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:18:33,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:18:33,536 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:18:33,536 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:18:33,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:18:33,536 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:18:33,536 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:18:33,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:18:33,537 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66d360c8c29bda7e5219dac4b14837aec8d465009822b05f671b68702d836670 [2021-12-28 03:18:33,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:18:33,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:18:33,820 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:18:33,821 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:18:33,822 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:18:33,823 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i [2021-12-28 03:18:33,868 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0b89c582/23fe2156161e4354a239d108405acb08/FLAG95d47739b [2021-12-28 03:18:34,487 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:18:34,488 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i [2021-12-28 03:18:34,521 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0b89c582/23fe2156161e4354a239d108405acb08/FLAG95d47739b [2021-12-28 03:18:34,897 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0b89c582/23fe2156161e4354a239d108405acb08 [2021-12-28 03:18:34,899 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:18:34,900 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:18:34,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:18:34,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:18:34,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:18:34,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:18:34" (1/1) ... [2021-12-28 03:18:34,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@713cc5df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:34, skipping insertion in model container [2021-12-28 03:18:34,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:18:34" (1/1) ... [2021-12-28 03:18:34,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:18:35,001 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:18:35,182 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i[4491,4504] [2021-12-28 03:18:35,186 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i[4551,4564] [2021-12-28 03:18:35,849 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:35,851 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:35,851 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:35,852 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:35,854 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:35,864 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:35,867 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:35,869 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:35,869 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:35,870 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:35,871 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:35,871 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:35,872 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:36,156 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:18:36,157 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:18:36,158 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:18:36,166 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:18:36,167 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:18:36,167 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:18:36,168 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:18:36,168 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:18:36,168 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:18:36,169 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:18:36,275 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:18:36,523 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:36,525 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:36,549 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:36,551 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:36,556 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:36,557 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:36,574 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:36,574 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:36,575 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:36,576 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:36,576 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:36,576 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:36,576 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:36,623 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:18:36,658 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:18:36,680 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i[4491,4504] [2021-12-28 03:18:36,681 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i[4551,4564] [2021-12-28 03:18:36,702 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:36,702 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:36,703 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:36,703 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:36,703 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:36,711 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:36,712 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:36,713 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:36,713 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:36,715 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:36,716 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:36,716 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:36,716 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:36,736 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:18:36,737 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:18:36,737 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:18:36,738 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:18:36,739 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:18:36,739 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:18:36,741 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:18:36,741 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:18:36,742 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:18:36,742 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:18:36,764 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:18:36,844 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:36,845 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:36,849 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:36,849 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:36,851 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:36,852 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:36,861 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:36,862 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:36,862 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:36,862 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:36,862 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:36,863 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:36,864 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:36,878 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:18:37,062 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:18:37,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:37 WrapperNode [2021-12-28 03:18:37,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:18:37,064 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:18:37,064 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:18:37,064 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:18:37,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:37" (1/1) ... [2021-12-28 03:18:37,174 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:37" (1/1) ... [2021-12-28 03:18:37,254 INFO L137 Inliner]: procedures = 774, calls = 2455, calls flagged for inlining = 68, calls inlined = 18, statements flattened = 945 [2021-12-28 03:18:37,257 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:18:37,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:18:37,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:18:37,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:18:37,264 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:37" (1/1) ... [2021-12-28 03:18:37,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:37" (1/1) ... [2021-12-28 03:18:37,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:37" (1/1) ... [2021-12-28 03:18:37,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:37" (1/1) ... [2021-12-28 03:18:37,334 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:37" (1/1) ... [2021-12-28 03:18:37,347 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:37" (1/1) ... [2021-12-28 03:18:37,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:37" (1/1) ... [2021-12-28 03:18:37,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:18:37,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:18:37,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:18:37,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:18:37,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:37" (1/1) ... [2021-12-28 03:18:37,395 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:18:37,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:18:37,445 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 03:18:37,502 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 03:18:37,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-28 03:18:37,534 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_hash_table [2021-12-28 03:18:37,534 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_hash_table [2021-12-28 03:18:37,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:18:37,534 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-28 03:18:37,534 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-28 03:18:37,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-28 03:18:37,535 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-28 03:18:37,535 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-12-28 03:18:37,535 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-12-28 03:18:37,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:18:37,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:18:37,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:18:37,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:18:37,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:18:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-28 03:18:37,536 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-28 03:18:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-28 03:18:37,536 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-28 03:18:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:18:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-12-28 03:18:37,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-12-28 03:18:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:18:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-28 03:18:37,537 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-28 03:18:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:18:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2021-12-28 03:18:37,537 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2021-12-28 03:18:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-12-28 03:18:37,537 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-12-28 03:18:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2021-12-28 03:18:37,537 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2021-12-28 03:18:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2021-12-28 03:18:37,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2021-12-28 03:18:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:18:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_get_entry_count [2021-12-28 03:18:37,538 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_get_entry_count [2021-12-28 03:18:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-12-28 03:18:37,539 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-12-28 03:18:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2021-12-28 03:18:37,539 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2021-12-28 03:18:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2021-12-28 03:18:37,539 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2021-12-28 03:18:37,540 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2021-12-28 03:18:37,542 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2021-12-28 03:18:37,542 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 03:18:37,542 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 03:18:37,542 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-12-28 03:18:37,543 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-12-28 03:18:37,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:18:37,543 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_allocated_hash_table [2021-12-28 03:18:37,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_allocated_hash_table [2021-12-28 03:18:37,544 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-28 03:18:37,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-28 03:18:37,548 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-12-28 03:18:37,548 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-12-28 03:18:37,548 INFO L130 BoogieDeclarations]: Found specification of procedure check_hash_table_unchanged [2021-12-28 03:18:37,549 INFO L138 BoogieDeclarations]: Found implementation of procedure check_hash_table_unchanged [2021-12-28 03:18:37,549 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-28 03:18:37,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-28 03:18:37,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:18:37,818 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:18:37,822 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:18:37,920 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2021-12-28 03:18:37,962 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2021-12-28 03:18:38,460 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##39: assume !true; [2021-12-28 03:18:38,460 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !true; [2021-12-28 03:18:38,460 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2021-12-28 03:18:38,461 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##60: assume !true; [2021-12-28 03:18:38,461 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##51: assume !true; [2021-12-28 03:18:38,490 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:18:38,496 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:18:38,496 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-12-28 03:18:38,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:18:38 BoogieIcfgContainer [2021-12-28 03:18:38,498 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:18:38,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:18:38,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:18:38,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:18:38,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:18:34" (1/3) ... [2021-12-28 03:18:38,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f7760d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:18:38, skipping insertion in model container [2021-12-28 03:18:38,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:37" (2/3) ... [2021-12-28 03:18:38,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f7760d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:18:38, skipping insertion in model container [2021-12-28 03:18:38,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:18:38" (3/3) ... [2021-12-28 03:18:38,503 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_eq_harness.i [2021-12-28 03:18:38,527 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:18:38,527 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:18:38,556 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:18:38,560 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 03:18:38,560 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:18:38,574 INFO L276 IsEmpty]: Start isEmpty. Operand has 291 states, 183 states have (on average 1.2185792349726776) internal successors, (223), 177 states have internal predecessors, (223), 89 states have call successors, (89), 24 states have call predecessors, (89), 24 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2021-12-28 03:18:38,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2021-12-28 03:18:38,584 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:38,585 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:38,585 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:38,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:38,589 INFO L85 PathProgramCache]: Analyzing trace with hash 2061328642, now seen corresponding path program 1 times [2021-12-28 03:18:38,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:18:38,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104596638] [2021-12-28 03:18:38,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:38,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:18:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:38,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:18:38,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:39,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:18:39,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:39,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 03:18:39,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:39,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-28 03:18:39,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:39,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 03:18:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:39,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-28 03:18:39,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:18:39,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:18:39,084 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig$NestedTraceCheckException: UNKNOWN during nested interpolation. I don't know how to continue at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:396) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck$TraceCheckLock@5cf70e73 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.lockAndPrepareSolverForTraceCheck(TraceCheck.java:493) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.checkTrace(TraceCheck.java:294) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:211) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:91) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:379) ... 31 more [2021-12-28 03:18:39,090 INFO L158 Benchmark]: Toolchain (without parser) took 4188.66ms. Allocated memory was 65.0MB in the beginning and 142.6MB in the end (delta: 77.6MB). Free memory was 34.7MB in the beginning and 44.9MB in the end (delta: -10.2MB). Peak memory consumption was 67.7MB. Max. memory is 16.1GB. [2021-12-28 03:18:39,090 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 65.0MB. Free memory was 46.5MB in the beginning and 46.5MB in the end (delta: 49.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 03:18:39,094 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2160.48ms. Allocated memory was 65.0MB in the beginning and 117.4MB in the end (delta: 52.4MB). Free memory was 34.5MB in the beginning and 57.3MB in the end (delta: -22.8MB). Peak memory consumption was 59.2MB. Max. memory is 16.1GB. [2021-12-28 03:18:39,094 INFO L158 Benchmark]: Boogie Procedure Inliner took 193.26ms. Allocated memory is still 117.4MB. Free memory was 57.3MB in the beginning and 45.3MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-28 03:18:39,095 INFO L158 Benchmark]: Boogie Preprocessor took 127.36ms. Allocated memory is still 117.4MB. Free memory was 45.3MB in the beginning and 63.8MB in the end (delta: -18.4MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. [2021-12-28 03:18:39,095 INFO L158 Benchmark]: RCFGBuilder took 1112.99ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 63.8MB in the beginning and 45.1MB in the end (delta: 18.6MB). Peak memory consumption was 43.4MB. Max. memory is 16.1GB. [2021-12-28 03:18:39,095 INFO L158 Benchmark]: TraceAbstraction took 589.01ms. Allocated memory is still 142.6MB. Free memory was 45.1MB in the beginning and 44.9MB in the end (delta: 235.3kB). Peak memory consumption was 1.1MB. Max. memory is 16.1GB. [2021-12-28 03:18:39,102 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 65.0MB. Free memory was 46.5MB in the beginning and 46.5MB in the end (delta: 49.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2160.48ms. Allocated memory was 65.0MB in the beginning and 117.4MB in the end (delta: 52.4MB). Free memory was 34.5MB in the beginning and 57.3MB in the end (delta: -22.8MB). Peak memory consumption was 59.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 193.26ms. Allocated memory is still 117.4MB. Free memory was 57.3MB in the beginning and 45.3MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 127.36ms. Allocated memory is still 117.4MB. Free memory was 45.3MB in the beginning and 63.8MB in the end (delta: -18.4MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. * RCFGBuilder took 1112.99ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 63.8MB in the beginning and 45.1MB in the end (delta: 18.6MB). Peak memory consumption was 43.4MB. Max. memory is 16.1GB. * TraceAbstraction took 589.01ms. Allocated memory is still 142.6MB. Free memory was 45.1MB in the beginning and 44.9MB in the end (delta: 235.3kB). Peak memory consumption was 1.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NestedTraceCheckException: UNKNOWN during nested interpolation. I don't know how to continue de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NestedTraceCheckException: UNKNOWN during nested interpolation. I don't know how to continue: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:396) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-28 03:18:39,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_hash_table_eq_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 66d360c8c29bda7e5219dac4b14837aec8d465009822b05f671b68702d836670 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 03:18:40,855 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:18:40,856 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:18:40,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:18:40,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:18:40,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:18:40,889 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:18:40,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:18:40,891 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:18:40,892 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:18:40,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:18:40,893 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:18:40,893 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:18:40,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:18:40,895 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:18:40,895 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:18:40,896 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:18:40,897 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:18:40,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:18:40,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:18:40,900 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:18:40,900 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:18:40,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:18:40,902 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:18:40,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:18:40,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:18:40,904 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:18:40,905 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:18:40,905 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:18:40,906 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:18:40,906 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:18:40,906 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:18:40,907 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:18:40,907 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:18:40,908 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:18:40,908 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:18:40,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:18:40,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:18:40,909 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:18:40,910 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:18:40,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:18:40,911 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-12-28 03:18:40,926 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:18:40,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:18:40,926 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:18:40,926 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:18:40,927 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:18:40,927 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:18:40,928 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:18:40,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:18:40,928 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:18:40,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:18:40,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:18:40,928 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:18:40,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:18:40,929 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:18:40,929 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-28 03:18:40,929 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-28 03:18:40,929 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-28 03:18:40,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:18:40,929 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:18:40,929 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:18:40,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:18:40,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:18:40,930 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:18:40,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:18:40,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:18:40,930 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:18:40,930 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:18:40,931 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-28 03:18:40,931 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-28 03:18:40,931 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:18:40,931 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:18:40,931 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:18:40,931 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-28 03:18:40,931 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66d360c8c29bda7e5219dac4b14837aec8d465009822b05f671b68702d836670 [2021-12-28 03:18:41,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:18:41,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:18:41,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:18:41,178 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:18:41,179 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:18:41,180 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i [2021-12-28 03:18:41,230 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d87ede29/31a401ccd5374c52bef58c490e0ca8e1/FLAG93d0bb5c8 [2021-12-28 03:18:41,870 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:18:41,871 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i [2021-12-28 03:18:41,903 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d87ede29/31a401ccd5374c52bef58c490e0ca8e1/FLAG93d0bb5c8 [2021-12-28 03:18:42,267 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d87ede29/31a401ccd5374c52bef58c490e0ca8e1 [2021-12-28 03:18:42,271 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:18:42,272 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:18:42,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:18:42,275 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:18:42,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:18:42,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:18:42" (1/1) ... [2021-12-28 03:18:42,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@391c732 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:42, skipping insertion in model container [2021-12-28 03:18:42,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:18:42" (1/1) ... [2021-12-28 03:18:42,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:18:42,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:18:42,631 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i[4491,4504] [2021-12-28 03:18:42,638 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i[4551,4564] [2021-12-28 03:18:43,236 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:43,237 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:43,238 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:43,238 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:43,239 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:43,252 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:43,255 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:43,257 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:43,259 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:43,261 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:43,262 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:43,264 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:43,265 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:43,569 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:18:43,570 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:18:43,571 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:18:43,571 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:18:43,572 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:18:43,573 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:18:43,573 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:18:43,574 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:18:43,574 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:18:43,575 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:18:43,701 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:18:43,922 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:43,923 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:43,946 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:43,948 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:43,953 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:43,953 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:43,970 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:43,971 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:43,971 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:43,972 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:43,972 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:43,972 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:43,972 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,009 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:18:44,042 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-28 03:18:44,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:18:44,089 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i[4491,4504] [2021-12-28 03:18:44,089 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i[4551,4564] [2021-12-28 03:18:44,118 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,118 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,119 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,119 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,119 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,123 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,124 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,124 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,124 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,126 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,127 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,128 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,128 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,157 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:18:44,158 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:18:44,158 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:18:44,159 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:18:44,160 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:18:44,160 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:18:44,162 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:18:44,162 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:18:44,162 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:18:44,163 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:18:44,182 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:18:44,265 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,266 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,270 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,271 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,272 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,273 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,280 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,281 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,282 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,282 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,282 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,282 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,283 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,297 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:18:44,320 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:18:44,336 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i[4491,4504] [2021-12-28 03:18:44,336 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i[4551,4564] [2021-12-28 03:18:44,362 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,362 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,362 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,363 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,363 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,366 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,366 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,367 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,367 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,368 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,368 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,369 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,369 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,394 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:18:44,395 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:18:44,395 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:18:44,396 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:18:44,396 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:18:44,397 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:18:44,399 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:18:44,399 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:18:44,400 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:18:44,400 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:18:44,410 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:18:44,498 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,499 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,524 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,525 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,536 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,536 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,542 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,543 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,549 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,549 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,550 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,550 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,550 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:18:44,576 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:18:44,918 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:18:44,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:44 WrapperNode [2021-12-28 03:18:44,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:18:44,936 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:18:44,936 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:18:44,936 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:18:44,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:44" (1/1) ... [2021-12-28 03:18:45,089 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:44" (1/1) ... [2021-12-28 03:18:45,188 INFO L137 Inliner]: procedures = 794, calls = 2455, calls flagged for inlining = 70, calls inlined = 17, statements flattened = 931 [2021-12-28 03:18:45,189 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:18:45,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:18:45,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:18:45,204 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:18:45,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:44" (1/1) ... [2021-12-28 03:18:45,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:44" (1/1) ... [2021-12-28 03:18:45,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:44" (1/1) ... [2021-12-28 03:18:45,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:44" (1/1) ... [2021-12-28 03:18:45,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:44" (1/1) ... [2021-12-28 03:18:45,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:44" (1/1) ... [2021-12-28 03:18:45,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:44" (1/1) ... [2021-12-28 03:18:45,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:18:45,352 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:18:45,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:18:45,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:18:45,353 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:44" (1/1) ... [2021-12-28 03:18:45,358 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:18:45,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:18:45,407 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 03:18:45,412 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 03:18:45,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-12-28 03:18:45,430 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_hash_table [2021-12-28 03:18:45,430 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_hash_table [2021-12-28 03:18:45,430 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-28 03:18:45,430 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-28 03:18:45,431 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-28 03:18:45,431 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-28 03:18:45,431 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-12-28 03:18:45,431 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-12-28 03:18:45,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:18:45,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:18:45,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:18:45,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:18:45,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:18:45,432 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-28 03:18:45,432 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-28 03:18:45,432 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-28 03:18:45,432 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-28 03:18:45,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:18:45,432 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-12-28 03:18:45,432 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-12-28 03:18:45,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:18:45,433 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-28 03:18:45,433 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-28 03:18:45,433 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2021-12-28 03:18:45,433 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2021-12-28 03:18:45,433 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-12-28 03:18:45,433 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-12-28 03:18:45,433 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2021-12-28 03:18:45,433 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2021-12-28 03:18:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2021-12-28 03:18:45,434 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2021-12-28 03:18:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:18:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-28 03:18:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-12-28 03:18:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_get_entry_count [2021-12-28 03:18:45,434 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_get_entry_count [2021-12-28 03:18:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-12-28 03:18:45,434 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-12-28 03:18:45,435 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2021-12-28 03:18:45,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2021-12-28 03:18:45,435 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2021-12-28 03:18:45,435 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2021-12-28 03:18:45,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-28 03:18:45,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-12-28 03:18:45,435 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2021-12-28 03:18:45,435 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2021-12-28 03:18:45,436 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 03:18:45,436 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 03:18:45,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-12-28 03:18:45,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-28 03:18:45,436 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-12-28 03:18:45,436 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-12-28 03:18:45,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:18:45,436 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_allocated_hash_table [2021-12-28 03:18:45,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_allocated_hash_table [2021-12-28 03:18:45,437 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-28 03:18:45,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-28 03:18:45,437 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-12-28 03:18:45,437 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-12-28 03:18:45,437 INFO L130 BoogieDeclarations]: Found specification of procedure check_hash_table_unchanged [2021-12-28 03:18:45,437 INFO L138 BoogieDeclarations]: Found implementation of procedure check_hash_table_unchanged [2021-12-28 03:18:45,702 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:18:45,703 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:18:45,914 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2021-12-28 03:18:46,215 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2021-12-28 03:18:47,388 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##39: assume !true; [2021-12-28 03:18:47,388 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !true; [2021-12-28 03:18:47,389 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2021-12-28 03:18:47,389 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##60: assume !true; [2021-12-28 03:18:47,389 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##51: assume !true; [2021-12-28 03:18:47,405 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:18:47,417 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:18:47,418 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-12-28 03:18:47,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:18:47 BoogieIcfgContainer [2021-12-28 03:18:47,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:18:47,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:18:47,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:18:47,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:18:47,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:18:42" (1/3) ... [2021-12-28 03:18:47,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bedf95f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:18:47, skipping insertion in model container [2021-12-28 03:18:47,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:18:44" (2/3) ... [2021-12-28 03:18:47,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bedf95f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:18:47, skipping insertion in model container [2021-12-28 03:18:47,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:18:47" (3/3) ... [2021-12-28 03:18:47,426 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_eq_harness.i [2021-12-28 03:18:47,432 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:18:47,432 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:18:47,472 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:18:47,476 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 03:18:47,477 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:18:47,496 INFO L276 IsEmpty]: Start isEmpty. Operand has 276 states, 172 states have (on average 1.2267441860465116) internal successors, (211), 166 states have internal predecessors, (211), 86 states have call successors, (86), 23 states have call predecessors, (86), 23 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2021-12-28 03:18:47,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-12-28 03:18:47,515 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:47,516 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:47,516 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:47,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:47,520 INFO L85 PathProgramCache]: Analyzing trace with hash 448295814, now seen corresponding path program 1 times [2021-12-28 03:18:47,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 03:18:47,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1647460443] [2021-12-28 03:18:47,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:47,533 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 03:18:47,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 03:18:47,542 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 03:18:47,543 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 03:18:48,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:48,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 2155 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-28 03:18:48,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:18:49,121 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 503 trivial. 0 not checked. [2021-12-28 03:18:49,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:18:49,122 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 03:18:49,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1647460443] [2021-12-28 03:18:49,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1647460443] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:18:49,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:18:49,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 03:18:49,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490889924] [2021-12-28 03:18:49,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:18:49,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-28 03:18:49,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 03:18:49,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-28 03:18:49,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-28 03:18:49,145 INFO L87 Difference]: Start difference. First operand has 276 states, 172 states have (on average 1.2267441860465116) internal successors, (211), 166 states have internal predecessors, (211), 86 states have call successors, (86), 23 states have call predecessors, (86), 23 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) Second operand has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-28 03:18:49,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:18:49,180 INFO L93 Difference]: Finished difference Result 548 states and 807 transitions. [2021-12-28 03:18:49,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-28 03:18:49,182 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 281 [2021-12-28 03:18:49,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:18:49,198 INFO L225 Difference]: With dead ends: 548 [2021-12-28 03:18:49,199 INFO L226 Difference]: Without dead ends: 270 [2021-12-28 03:18:49,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 280 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 03:18:49,205 INFO L933 BasicCegarLoop]: 370 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, 370 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 03:18:49,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:18:49,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-12-28 03:18:49,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2021-12-28 03:18:49,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 160 states have (on average 1.2125) internal successors, (194), 161 states have internal predecessors, (194), 86 states have call successors, (86), 23 states have call predecessors, (86), 23 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2021-12-28 03:18:49,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 365 transitions. [2021-12-28 03:18:49,244 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 365 transitions. Word has length 281 [2021-12-28 03:18:49,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:18:49,244 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 365 transitions. [2021-12-28 03:18:49,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-28 03:18:49,245 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 365 transitions. [2021-12-28 03:18:49,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-12-28 03:18:49,247 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:49,247 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:49,287 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 03:18:49,463 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 03:18:49,464 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:49,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:49,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1090035532, now seen corresponding path program 1 times [2021-12-28 03:18:49,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 03:18:49,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1784044121] [2021-12-28 03:18:49,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:49,466 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 03:18:49,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 03:18:49,467 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 03:18:49,469 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 03:18:50,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:50,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 2155 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 03:18:50,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:18:51,001 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 641 trivial. 0 not checked. [2021-12-28 03:18:51,001 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:18:51,002 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 03:18:51,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1784044121] [2021-12-28 03:18:51,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1784044121] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:18:51,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:18:51,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:18:51,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294911834] [2021-12-28 03:18:51,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:18:51,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:18:51,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 03:18:51,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:18:51,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:18:51,007 INFO L87 Difference]: Start difference. First operand 270 states and 365 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) [2021-12-28 03:18:51,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:18:51,096 INFO L93 Difference]: Finished difference Result 541 states and 737 transitions. [2021-12-28 03:18:51,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:18:51,097 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) Word has length 281 [2021-12-28 03:18:51,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:18:51,103 INFO L225 Difference]: With dead ends: 541 [2021-12-28 03:18:51,104 INFO L226 Difference]: Without dead ends: 274 [2021-12-28 03:18:51,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:18:51,107 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 2 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:18:51,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1448 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:18:51,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-12-28 03:18:51,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2021-12-28 03:18:51,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 163 states have (on average 1.2085889570552146) internal successors, (197), 164 states have internal predecessors, (197), 86 states have call successors, (86), 23 states have call predecessors, (86), 24 states have return successors, (86), 86 states have call predecessors, (86), 85 states have call successors, (86) [2021-12-28 03:18:51,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 369 transitions. [2021-12-28 03:18:51,137 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 369 transitions. Word has length 281 [2021-12-28 03:18:51,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:18:51,139 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 369 transitions. [2021-12-28 03:18:51,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) [2021-12-28 03:18:51,139 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 369 transitions. [2021-12-28 03:18:51,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2021-12-28 03:18:51,147 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:51,148 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:51,209 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 03:18:51,363 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 03:18:51,363 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:51,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:51,364 INFO L85 PathProgramCache]: Analyzing trace with hash 224607552, now seen corresponding path program 1 times [2021-12-28 03:18:51,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 03:18:51,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462785892] [2021-12-28 03:18:51,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:51,367 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 03:18:51,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 03:18:51,368 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 03:18:51,369 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 03:18:52,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:52,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 2075 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-28 03:18:52,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:18:52,647 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 249 proven. 0 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2021-12-28 03:18:52,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:18:52,647 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 03:18:52,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462785892] [2021-12-28 03:18:52,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462785892] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:18:52,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:18:52,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:18:52,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079387024] [2021-12-28 03:18:52,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:18:52,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:18:52,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 03:18:52,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:18:52,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:18:52,650 INFO L87 Difference]: Start difference. First operand 274 states and 369 transitions. Second operand has 6 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-12-28 03:18:52,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:18:52,843 INFO L93 Difference]: Finished difference Result 548 states and 741 transitions. [2021-12-28 03:18:52,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:18:52,844 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 305 [2021-12-28 03:18:52,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:18:52,846 INFO L225 Difference]: With dead ends: 548 [2021-12-28 03:18:52,846 INFO L226 Difference]: Without dead ends: 276 [2021-12-28 03:18:52,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:18:52,848 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 2 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:18:52,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1672 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 03:18:52,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-12-28 03:18:52,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2021-12-28 03:18:52,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 164 states have (on average 1.2073170731707317) internal successors, (198), 166 states have internal predecessors, (198), 86 states have call successors, (86), 23 states have call predecessors, (86), 25 states have return successors, (87), 86 states have call predecessors, (87), 85 states have call successors, (87) [2021-12-28 03:18:52,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 371 transitions. [2021-12-28 03:18:52,860 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 371 transitions. Word has length 305 [2021-12-28 03:18:52,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:18:52,860 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 371 transitions. [2021-12-28 03:18:52,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-12-28 03:18:52,861 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 371 transitions. [2021-12-28 03:18:52,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-12-28 03:18:52,863 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:52,863 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:52,894 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 03:18:53,078 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 03:18:53,078 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:53,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:53,079 INFO L85 PathProgramCache]: Analyzing trace with hash 947024628, now seen corresponding path program 1 times [2021-12-28 03:18:53,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 03:18:53,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229719254] [2021-12-28 03:18:53,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:53,081 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 03:18:53,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 03:18:53,102 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 03:18:53,104 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 03:18:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:54,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 2281 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-28 03:18:54,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:18:54,453 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-28 03:18:55,273 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 328 proven. 0 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2021-12-28 03:18:55,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:18:55,273 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 03:18:55,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1229719254] [2021-12-28 03:18:55,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1229719254] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:18:55,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:18:55,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-28 03:18:55,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529117536] [2021-12-28 03:18:55,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:18:55,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 03:18:55,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 03:18:55,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 03:18:55,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-28 03:18:55,275 INFO L87 Difference]: Start difference. First operand 276 states and 371 transitions. Second operand has 12 states, 11 states have (on average 9.454545454545455) internal successors, (104), 9 states have internal predecessors, (104), 4 states have call successors, (48), 3 states have call predecessors, (48), 5 states have return successors, (47), 5 states have call predecessors, (47), 4 states have call successors, (47) [2021-12-28 03:18:56,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:18:56,185 INFO L93 Difference]: Finished difference Result 560 states and 751 transitions. [2021-12-28 03:18:56,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-28 03:18:56,186 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 9.454545454545455) internal successors, (104), 9 states have internal predecessors, (104), 4 states have call successors, (48), 3 states have call predecessors, (48), 5 states have return successors, (47), 5 states have call predecessors, (47), 4 states have call successors, (47) Word has length 315 [2021-12-28 03:18:56,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:18:56,188 INFO L225 Difference]: With dead ends: 560 [2021-12-28 03:18:56,188 INFO L226 Difference]: Without dead ends: 285 [2021-12-28 03:18:56,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-12-28 03:18:56,190 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 17 mSDsluCounter, 1999 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2360 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 152 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-28 03:18:56,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 2360 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 152 Unchecked, 0.8s Time] [2021-12-28 03:18:56,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-12-28 03:18:56,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2021-12-28 03:18:56,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 172 states have (on average 1.2093023255813953) internal successors, (208), 174 states have internal predecessors, (208), 86 states have call successors, (86), 24 states have call predecessors, (86), 26 states have return successors, (88), 86 states have call predecessors, (88), 85 states have call successors, (88) [2021-12-28 03:18:56,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 382 transitions. [2021-12-28 03:18:56,210 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 382 transitions. Word has length 315 [2021-12-28 03:18:56,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:18:56,210 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 382 transitions. [2021-12-28 03:18:56,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 9.454545454545455) internal successors, (104), 9 states have internal predecessors, (104), 4 states have call successors, (48), 3 states have call predecessors, (48), 5 states have return successors, (47), 5 states have call predecessors, (47), 4 states have call successors, (47) [2021-12-28 03:18:56,211 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 382 transitions. [2021-12-28 03:18:56,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-12-28 03:18:56,213 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:56,213 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:56,255 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 03:18:56,438 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 03:18:56,439 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:56,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:56,439 INFO L85 PathProgramCache]: Analyzing trace with hash 605345714, now seen corresponding path program 1 times [2021-12-28 03:18:56,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 03:18:56,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [385290692] [2021-12-28 03:18:56,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:56,441 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 03:18:56,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 03:18:56,442 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 03:18:56,444 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 03:18:57,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:57,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 2278 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-28 03:18:57,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:18:58,021 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 328 proven. 0 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2021-12-28 03:18:58,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:18:58,021 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 03:18:58,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [385290692] [2021-12-28 03:18:58,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [385290692] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:18:58,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:18:58,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:18:58,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962026170] [2021-12-28 03:18:58,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:18:58,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:18:58,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 03:18:58,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:18:58,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:18:58,023 INFO L87 Difference]: Start difference. First operand 285 states and 382 transitions. Second operand has 5 states, 4 states have (on average 26.0) internal successors, (104), 5 states have internal predecessors, (104), 3 states have call successors, (48), 2 states have call predecessors, (48), 3 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2021-12-28 03:18:58,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:18:58,143 INFO L93 Difference]: Finished difference Result 564 states and 773 transitions. [2021-12-28 03:18:58,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:18:58,143 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 26.0) internal successors, (104), 5 states have internal predecessors, (104), 3 states have call successors, (48), 2 states have call predecessors, (48), 3 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) Word has length 315 [2021-12-28 03:18:58,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:18:58,146 INFO L225 Difference]: With dead ends: 564 [2021-12-28 03:18:58,146 INFO L226 Difference]: Without dead ends: 287 [2021-12-28 03:18:58,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:18:58,147 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 61 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:18:58,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 978 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:18:58,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-12-28 03:18:58,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-12-28 03:18:58,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 173 states have (on average 1.2023121387283238) internal successors, (208), 175 states have internal predecessors, (208), 87 states have call successors, (87), 24 states have call predecessors, (87), 26 states have return successors, (103), 87 states have call predecessors, (103), 86 states have call successors, (103) [2021-12-28 03:18:58,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 398 transitions. [2021-12-28 03:18:58,182 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 398 transitions. Word has length 315 [2021-12-28 03:18:58,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:18:58,182 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 398 transitions. [2021-12-28 03:18:58,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 26.0) internal successors, (104), 5 states have internal predecessors, (104), 3 states have call successors, (48), 2 states have call predecessors, (48), 3 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2021-12-28 03:18:58,183 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 398 transitions. [2021-12-28 03:18:58,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2021-12-28 03:18:58,185 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:18:58,185 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:18:58,226 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 03:18:58,411 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 03:18:58,411 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:18:58,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:18:58,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1717919787, now seen corresponding path program 1 times [2021-12-28 03:18:58,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 03:18:58,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1343197310] [2021-12-28 03:18:58,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:18:58,413 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 03:18:58,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 03:18:58,415 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 03:18:58,416 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 03:18:59,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:18:59,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 2295 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-28 03:18:59,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:18:59,814 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-28 03:19:00,795 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 328 proven. 0 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2021-12-28 03:19:00,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:19:00,796 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 03:19:00,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1343197310] [2021-12-28 03:19:00,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1343197310] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:19:00,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:19:00,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-28 03:19:00,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025334890] [2021-12-28 03:19:00,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:19:00,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-28 03:19:00,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 03:19:00,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-28 03:19:00,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-12-28 03:19:00,798 INFO L87 Difference]: Start difference. First operand 287 states and 398 transitions. Second operand has 13 states, 11 states have (on average 9.818181818181818) internal successors, (108), 10 states have internal predecessors, (108), 5 states have call successors, (49), 3 states have call predecessors, (49), 6 states have return successors, (48), 6 states have call predecessors, (48), 5 states have call successors, (48) [2021-12-28 03:19:01,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:19:01,075 INFO L93 Difference]: Finished difference Result 575 states and 797 transitions. [2021-12-28 03:19:01,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 03:19:01,076 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 9.818181818181818) internal successors, (108), 10 states have internal predecessors, (108), 5 states have call successors, (49), 3 states have call predecessors, (49), 6 states have return successors, (48), 6 states have call predecessors, (48), 5 states have call successors, (48) Word has length 321 [2021-12-28 03:19:01,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:19:01,078 INFO L225 Difference]: With dead ends: 575 [2021-12-28 03:19:01,078 INFO L226 Difference]: Without dead ends: 290 [2021-12-28 03:19:01,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 309 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-12-28 03:19:01,080 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 9 mSDsluCounter, 1695 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2053 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 141 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:19:01,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 2053 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 141 Unchecked, 0.2s Time] [2021-12-28 03:19:01,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-12-28 03:19:01,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2021-12-28 03:19:01,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 175 states have (on average 1.2) internal successors, (210), 177 states have internal predecessors, (210), 88 states have call successors, (88), 25 states have call predecessors, (88), 26 states have return successors, (104), 87 states have call predecessors, (104), 87 states have call successors, (104) [2021-12-28 03:19:01,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 402 transitions. [2021-12-28 03:19:01,091 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 402 transitions. Word has length 321 [2021-12-28 03:19:01,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:19:01,091 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 402 transitions. [2021-12-28 03:19:01,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 9.818181818181818) internal successors, (108), 10 states have internal predecessors, (108), 5 states have call successors, (49), 3 states have call predecessors, (49), 6 states have return successors, (48), 6 states have call predecessors, (48), 5 states have call successors, (48) [2021-12-28 03:19:01,092 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 402 transitions. [2021-12-28 03:19:01,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2021-12-28 03:19:01,093 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:19:01,093 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:19:01,135 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 03:19:01,315 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 03:19:01,315 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:19:01,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:19:01,316 INFO L85 PathProgramCache]: Analyzing trace with hash 870325970, now seen corresponding path program 1 times [2021-12-28 03:19:01,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 03:19:01,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [906033937] [2021-12-28 03:19:01,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:19:01,318 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 03:19:01,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 03:19:01,319 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 03:19:01,321 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 03:19:02,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:19:02,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 2312 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-28 03:19:02,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:19:03,127 INFO L134 CoverageAnalysis]: Checked inductivity of 834 backedges. 427 proven. 0 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2021-12-28 03:19:03,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:19:03,128 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 03:19:03,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [906033937] [2021-12-28 03:19:03,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [906033937] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:19:03,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:19:03,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:19:03,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840582523] [2021-12-28 03:19:03,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:19:03,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:19:03,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 03:19:03,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:19:03,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:19:03,132 INFO L87 Difference]: Start difference. First operand 290 states and 402 transitions. Second operand has 6 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 3 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2021-12-28 03:19:03,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:19:03,293 INFO L93 Difference]: Finished difference Result 567 states and 789 transitions. [2021-12-28 03:19:03,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:19:03,294 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 3 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) Word has length 326 [2021-12-28 03:19:03,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:19:03,295 INFO L225 Difference]: With dead ends: 567 [2021-12-28 03:19:03,296 INFO L226 Difference]: Without dead ends: 288 [2021-12-28 03:19:03,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:19:03,297 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 2 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:19:03,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1672 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:19:03,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-12-28 03:19:03,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 284. [2021-12-28 03:19:03,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 171 states have (on average 1.1929824561403508) internal successors, (204), 172 states have internal predecessors, (204), 88 states have call successors, (88), 25 states have call predecessors, (88), 24 states have return successors, (102), 86 states have call predecessors, (102), 87 states have call successors, (102) [2021-12-28 03:19:03,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 394 transitions. [2021-12-28 03:19:03,305 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 394 transitions. Word has length 326 [2021-12-28 03:19:03,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:19:03,306 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 394 transitions. [2021-12-28 03:19:03,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 3 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2021-12-28 03:19:03,306 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 394 transitions. [2021-12-28 03:19:03,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2021-12-28 03:19:03,308 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:19:03,308 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:19:03,349 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 03:19:03,524 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 03:19:03,525 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:19:03,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:19:03,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1951086534, now seen corresponding path program 1 times [2021-12-28 03:19:03,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 03:19:03,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903037918] [2021-12-28 03:19:03,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:19:03,527 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 03:19:03,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 03:19:03,528 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 03:19:03,530 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 03:19:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:19:05,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 2518 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-28 03:19:05,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:19:05,877 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-28 03:19:06,551 INFO L134 CoverageAnalysis]: Checked inductivity of 883 backedges. 455 proven. 0 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2021-12-28 03:19:06,551 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:19:06,552 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 03:19:06,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903037918] [2021-12-28 03:19:06,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903037918] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:19:06,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:19:06,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-28 03:19:06,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361842154] [2021-12-28 03:19:06,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:19:06,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 03:19:06,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 03:19:06,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 03:19:06,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-28 03:19:06,553 INFO L87 Difference]: Start difference. First operand 284 states and 394 transitions. Second operand has 12 states, 11 states have (on average 9.909090909090908) internal successors, (109), 9 states have internal predecessors, (109), 4 states have call successors, (50), 3 states have call predecessors, (50), 5 states have return successors, (49), 5 states have call predecessors, (49), 4 states have call successors, (49) [2021-12-28 03:19:07,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:19:07,314 INFO L93 Difference]: Finished difference Result 541 states and 751 transitions. [2021-12-28 03:19:07,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-28 03:19:07,316 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 9.909090909090908) internal successors, (109), 9 states have internal predecessors, (109), 4 states have call successors, (50), 3 states have call predecessors, (50), 5 states have return successors, (49), 5 states have call predecessors, (49), 4 states have call successors, (49) Word has length 336 [2021-12-28 03:19:07,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:19:07,317 INFO L225 Difference]: With dead ends: 541 [2021-12-28 03:19:07,318 INFO L226 Difference]: Without dead ends: 293 [2021-12-28 03:19:07,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-12-28 03:19:07,319 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 19 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-28 03:19:07,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 1748 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 47 Unchecked, 0.7s Time] [2021-12-28 03:19:07,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-12-28 03:19:07,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2021-12-28 03:19:07,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 179 states have (on average 1.1955307262569832) internal successors, (214), 180 states have internal predecessors, (214), 88 states have call successors, (88), 26 states have call predecessors, (88), 25 states have return successors, (103), 86 states have call predecessors, (103), 87 states have call successors, (103) [2021-12-28 03:19:07,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 405 transitions. [2021-12-28 03:19:07,330 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 405 transitions. Word has length 336 [2021-12-28 03:19:07,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:19:07,331 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 405 transitions. [2021-12-28 03:19:07,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 9.909090909090908) internal successors, (109), 9 states have internal predecessors, (109), 4 states have call successors, (50), 3 states have call predecessors, (50), 5 states have return successors, (49), 5 states have call predecessors, (49), 4 states have call successors, (49) [2021-12-28 03:19:07,331 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 405 transitions. [2021-12-28 03:19:07,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2021-12-28 03:19:07,333 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:19:07,333 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:19:07,405 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 03:19:07,547 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 03:19:07,548 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:19:07,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:19:07,548 INFO L85 PathProgramCache]: Analyzing trace with hash 726440312, now seen corresponding path program 1 times [2021-12-28 03:19:07,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 03:19:07,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1302895374] [2021-12-28 03:19:07,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:19:07,550 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 03:19:07,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 03:19:07,551 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 03:19:07,552 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 03:19:09,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:19:09,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 2515 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-28 03:19:09,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:19:09,950 INFO L134 CoverageAnalysis]: Checked inductivity of 883 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2021-12-28 03:19:09,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:19:09,950 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 03:19:09,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1302895374] [2021-12-28 03:19:09,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1302895374] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:19:09,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:19:09,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:19:09,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670455162] [2021-12-28 03:19:09,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:19:09,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:19:09,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 03:19:09,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:19:09,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:19:09,952 INFO L87 Difference]: Start difference. First operand 293 states and 405 transitions. Second operand has 5 states, 4 states have (on average 25.25) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-12-28 03:19:10,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:19:10,113 INFO L93 Difference]: Finished difference Result 538 states and 747 transitions. [2021-12-28 03:19:10,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:19:10,113 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 25.25) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 336 [2021-12-28 03:19:10,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:19:10,115 INFO L225 Difference]: With dead ends: 538 [2021-12-28 03:19:10,115 INFO L226 Difference]: Without dead ends: 288 [2021-12-28 03:19:10,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:19:10,117 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 59 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:19:10,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 981 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:19:10,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-12-28 03:19:10,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2021-12-28 03:19:10,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 175 states have (on average 1.1885714285714286) internal successors, (208), 175 states have internal predecessors, (208), 88 states have call successors, (88), 26 states have call predecessors, (88), 24 states have return successors, (99), 86 states have call predecessors, (99), 87 states have call successors, (99) [2021-12-28 03:19:10,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 395 transitions. [2021-12-28 03:19:10,144 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 395 transitions. Word has length 336 [2021-12-28 03:19:10,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:19:10,146 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 395 transitions. [2021-12-28 03:19:10,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 25.25) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-12-28 03:19:10,148 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 395 transitions. [2021-12-28 03:19:10,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2021-12-28 03:19:10,150 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:19:10,150 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:19:10,205 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 03:19:10,356 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 03:19:10,357 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:19:10,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:19:10,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1622214181, now seen corresponding path program 1 times [2021-12-28 03:19:10,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 03:19:10,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [622839554] [2021-12-28 03:19:10,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:19:10,375 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 03:19:10,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 03:19:10,376 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 03:19:10,378 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 03:19:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:19:12,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 2532 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-28 03:19:12,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:19:12,721 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-28 03:19:13,336 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 461 proven. 0 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2021-12-28 03:19:13,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:19:13,336 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 03:19:13,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [622839554] [2021-12-28 03:19:13,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [622839554] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:19:13,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:19:13,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-28 03:19:13,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657263520] [2021-12-28 03:19:13,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:19:13,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-28 03:19:13,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 03:19:13,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-28 03:19:13,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-12-28 03:19:13,338 INFO L87 Difference]: Start difference. First operand 288 states and 395 transitions. Second operand has 13 states, 11 states have (on average 10.272727272727273) internal successors, (113), 10 states have internal predecessors, (113), 5 states have call successors, (51), 3 states have call predecessors, (51), 6 states have return successors, (50), 6 states have call predecessors, (50), 5 states have call successors, (50) [2021-12-28 03:19:14,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:19:14,132 INFO L93 Difference]: Finished difference Result 542 states and 746 transitions. [2021-12-28 03:19:14,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 03:19:14,133 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 10.272727272727273) internal successors, (113), 10 states have internal predecessors, (113), 5 states have call successors, (51), 3 states have call predecessors, (51), 6 states have return successors, (50), 6 states have call predecessors, (50), 5 states have call successors, (50) Word has length 342 [2021-12-28 03:19:14,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:19:14,135 INFO L225 Difference]: With dead ends: 542 [2021-12-28 03:19:14,135 INFO L226 Difference]: Without dead ends: 291 [2021-12-28 03:19:14,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-12-28 03:19:14,136 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 9 mSDsluCounter, 2032 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2399 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 159 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-28 03:19:14,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 2399 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 159 Unchecked, 0.7s Time] [2021-12-28 03:19:14,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-12-28 03:19:14,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 284. [2021-12-28 03:19:14,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 171 states have (on average 1.1929824561403508) internal successors, (204), 172 states have internal predecessors, (204), 88 states have call successors, (88), 25 states have call predecessors, (88), 24 states have return successors, (99), 86 states have call predecessors, (99), 87 states have call successors, (99) [2021-12-28 03:19:14,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 391 transitions. [2021-12-28 03:19:14,145 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 391 transitions. Word has length 342 [2021-12-28 03:19:14,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:19:14,145 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 391 transitions. [2021-12-28 03:19:14,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 10.272727272727273) internal successors, (113), 10 states have internal predecessors, (113), 5 states have call successors, (51), 3 states have call predecessors, (51), 6 states have return successors, (50), 6 states have call predecessors, (50), 5 states have call successors, (50) [2021-12-28 03:19:14,146 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 391 transitions. [2021-12-28 03:19:14,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2021-12-28 03:19:14,147 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:19:14,147 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:19:14,197 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-12-28 03:19:14,353 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 03:19:14,354 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:19:14,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:19:14,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1674881120, now seen corresponding path program 2 times [2021-12-28 03:19:14,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 03:19:14,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1567142218] [2021-12-28 03:19:14,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:19:14,357 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 03:19:14,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 03:19:14,358 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-28 03:19:14,359 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 03:19:18,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 03:19:18,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:19:18,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 2549 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 03:19:18,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:19:19,031 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 334 proven. 0 refuted. 0 times theorem prover too weak. 566 trivial. 0 not checked. [2021-12-28 03:19:19,031 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:19:19,031 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 03:19:19,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1567142218] [2021-12-28 03:19:19,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1567142218] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:19:19,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:19:19,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 03:19:19,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929803425] [2021-12-28 03:19:19,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:19:19,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:19:19,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 03:19:19,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:19:19,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:19:19,033 INFO L87 Difference]: Start difference. First operand 284 states and 391 transitions. Second operand has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-12-28 03:19:19,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:19:19,220 INFO L93 Difference]: Finished difference Result 487 states and 707 transitions. [2021-12-28 03:19:19,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:19:19,221 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 347 [2021-12-28 03:19:19,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:19:19,222 INFO L225 Difference]: With dead ends: 487 [2021-12-28 03:19:19,222 INFO L226 Difference]: Without dead ends: 290 [2021-12-28 03:19:19,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:19:19,224 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 2 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:19:19,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2005 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 03:19:19,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-12-28 03:19:19,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 287. [2021-12-28 03:19:19,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 173 states have (on average 1.1907514450867052) internal successors, (206), 175 states have internal predecessors, (206), 88 states have call successors, (88), 25 states have call predecessors, (88), 25 states have return successors, (114), 86 states have call predecessors, (114), 87 states have call successors, (114) [2021-12-28 03:19:19,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 408 transitions. [2021-12-28 03:19:19,267 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 408 transitions. Word has length 347 [2021-12-28 03:19:19,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:19:19,268 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 408 transitions. [2021-12-28 03:19:19,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-12-28 03:19:19,268 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 408 transitions. [2021-12-28 03:19:19,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2021-12-28 03:19:19,273 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:19:19,273 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:19:19,337 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 03:19:19,495 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 03:19:19,495 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:19:19,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:19:19,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1222453825, now seen corresponding path program 2 times [2021-12-28 03:19:19,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 03:19:19,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [824020910] [2021-12-28 03:19:19,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:19:19,498 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 03:19:19,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 03:19:19,499 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 03:19:19,501 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 03:19:23,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 03:19:23,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:19:24,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 2563 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-28 03:19:24,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:19:25,072 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 334 proven. 0 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2021-12-28 03:19:25,072 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:19:25,072 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 03:19:25,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [824020910] [2021-12-28 03:19:25,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [824020910] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:19:25,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:19:25,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 03:19:25,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714609905] [2021-12-28 03:19:25,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:19:25,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:19:25,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 03:19:25,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:19:25,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:19:25,074 INFO L87 Difference]: Start difference. First operand 287 states and 408 transitions. Second operand has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 3 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (37), 2 states have call predecessors, (37), 3 states have call successors, (37) [2021-12-28 03:19:26,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:19:26,196 INFO L93 Difference]: Finished difference Result 491 states and 730 transitions. [2021-12-28 03:19:26,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:19:26,212 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 3 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (37), 2 states have call predecessors, (37), 3 states have call successors, (37) Word has length 353 [2021-12-28 03:19:26,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:19:26,214 INFO L225 Difference]: With dead ends: 491 [2021-12-28 03:19:26,214 INFO L226 Difference]: Without dead ends: 289 [2021-12-28 03:19:26,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-28 03:19:26,215 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 7 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1999 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 123 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-28 03:19:26,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1999 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 123 Unchecked, 0.9s Time] [2021-12-28 03:19:26,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-12-28 03:19:26,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 286. [2021-12-28 03:19:26,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 173 states have (on average 1.1907514450867052) internal successors, (206), 174 states have internal predecessors, (206), 87 states have call successors, (87), 25 states have call predecessors, (87), 25 states have return successors, (113), 86 states have call predecessors, (113), 86 states have call successors, (113) [2021-12-28 03:19:26,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 406 transitions. [2021-12-28 03:19:26,228 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 406 transitions. Word has length 353 [2021-12-28 03:19:26,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:19:26,230 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 406 transitions. [2021-12-28 03:19:26,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 3 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (37), 2 states have call predecessors, (37), 3 states have call successors, (37) [2021-12-28 03:19:26,239 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 406 transitions. [2021-12-28 03:19:26,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2021-12-28 03:19:26,242 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:19:26,242 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:19:26,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-12-28 03:19:26,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 03:19:26,442 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:19:26,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:19:26,443 INFO L85 PathProgramCache]: Analyzing trace with hash 132787104, now seen corresponding path program 3 times [2021-12-28 03:19:26,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 03:19:26,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1607565310] [2021-12-28 03:19:26,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-28 03:19:26,445 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 03:19:26,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 03:19:26,460 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-28 03:19:26,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-28 03:19:29,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-28 03:19:29,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:19:29,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 1455 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 03:19:29,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:19:29,892 INFO L134 CoverageAnalysis]: Checked inductivity of 928 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2021-12-28 03:19:29,892 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:19:29,892 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 03:19:29,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1607565310] [2021-12-28 03:19:29,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1607565310] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:19:29,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:19:29,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 03:19:29,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386683937] [2021-12-28 03:19:29,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:19:29,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:19:29,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 03:19:29,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:19:29,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:19:29,894 INFO L87 Difference]: Start difference. First operand 286 states and 406 transitions. Second operand has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-12-28 03:19:30,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:19:30,043 INFO L93 Difference]: Finished difference Result 482 states and 703 transitions. [2021-12-28 03:19:30,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:19:30,043 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 358 [2021-12-28 03:19:30,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:19:30,045 INFO L225 Difference]: With dead ends: 482 [2021-12-28 03:19:30,045 INFO L226 Difference]: Without dead ends: 289 [2021-12-28 03:19:30,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:19:30,046 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 2 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:19:30,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2005 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:19:30,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-12-28 03:19:30,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2021-12-28 03:19:30,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 175 states have (on average 1.1885714285714286) internal successors, (208), 177 states have internal predecessors, (208), 87 states have call successors, (87), 25 states have call predecessors, (87), 26 states have return successors, (123), 86 states have call predecessors, (123), 86 states have call successors, (123) [2021-12-28 03:19:30,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 418 transitions. [2021-12-28 03:19:30,060 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 418 transitions. Word has length 358 [2021-12-28 03:19:30,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:19:30,061 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 418 transitions. [2021-12-28 03:19:30,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-12-28 03:19:30,061 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 418 transitions. [2021-12-28 03:19:30,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2021-12-28 03:19:30,062 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:19:30,063 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:19:30,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-12-28 03:19:30,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 03:19:30,263 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:19:30,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:19:30,264 INFO L85 PathProgramCache]: Analyzing trace with hash 2107400608, now seen corresponding path program 4 times [2021-12-28 03:19:30,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 03:19:30,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [461330290] [2021-12-28 03:19:30,266 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-28 03:19:30,266 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 03:19:30,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 03:19:30,267 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-28 03:19:30,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-28 03:19:32,586 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-28 03:19:32,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:19:32,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 2611 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 03:19:32,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:19:33,256 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 339 proven. 0 refuted. 0 times theorem prover too weak. 628 trivial. 0 not checked. [2021-12-28 03:19:33,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:19:33,256 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 03:19:33,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [461330290] [2021-12-28 03:19:33,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [461330290] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:19:33,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:19:33,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 03:19:33,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415594306] [2021-12-28 03:19:33,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:19:33,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:19:33,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 03:19:33,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:19:33,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:19:33,258 INFO L87 Difference]: Start difference. First operand 289 states and 418 transitions. Second operand has 7 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (39), 2 states have call predecessors, (39), 4 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2021-12-28 03:19:33,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:19:33,424 INFO L93 Difference]: Finished difference Result 491 states and 727 transitions. [2021-12-28 03:19:33,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:19:33,425 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (39), 2 states have call predecessors, (39), 4 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 369 [2021-12-28 03:19:33,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:19:33,427 INFO L225 Difference]: With dead ends: 491 [2021-12-28 03:19:33,427 INFO L226 Difference]: Without dead ends: 289 [2021-12-28 03:19:33,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:19:33,428 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 2 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:19:33,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2005 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 03:19:33,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-12-28 03:19:33,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2021-12-28 03:19:33,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 175 states have (on average 1.1885714285714286) internal successors, (208), 177 states have internal predecessors, (208), 87 states have call successors, (87), 25 states have call predecessors, (87), 26 states have return successors, (122), 86 states have call predecessors, (122), 86 states have call successors, (122) [2021-12-28 03:19:33,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 417 transitions. [2021-12-28 03:19:33,437 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 417 transitions. Word has length 369 [2021-12-28 03:19:33,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:19:33,438 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 417 transitions. [2021-12-28 03:19:33,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (39), 2 states have call predecessors, (39), 4 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2021-12-28 03:19:33,438 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 417 transitions. [2021-12-28 03:19:33,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2021-12-28 03:19:33,440 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:19:33,440 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:19:33,512 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-12-28 03:19:33,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 03:19:33,663 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:19:33,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:19:33,664 INFO L85 PathProgramCache]: Analyzing trace with hash -133143286, now seen corresponding path program 5 times [2021-12-28 03:19:33,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 03:19:33,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1571142723] [2021-12-28 03:19:33,666 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-28 03:19:33,666 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 03:19:33,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 03:19:33,668 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-28 03:19:33,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process