./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_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_priority_queue_s_sift_down_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 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 03:21:46,950 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:21:46,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:21:46,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:21:46,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:21:46,990 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:21:46,992 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:21:46,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:21:46,997 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:21:46,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:21:46,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:21:46,999 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:21:46,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:21:47,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:21:47,001 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:21:47,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:21:47,002 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:21:47,003 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:21:47,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:21:47,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:21:47,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:21:47,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:21:47,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:21:47,014 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:21:47,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:21:47,023 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:21:47,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:21:47,024 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:21:47,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:21:47,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:21:47,025 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:21:47,025 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:21:47,026 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:21:47,026 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:21:47,027 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:21:47,027 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:21:47,028 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:21:47,028 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:21:47,028 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:21:47,029 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:21:47,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:21:47,031 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:21:47,058 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:21:47,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:21:47,059 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:21:47,059 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:21:47,061 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:21:47,061 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:21:47,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:21:47,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:21:47,062 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:21:47,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:21:47,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:21:47,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:21:47,064 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:21:47,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:21:47,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:21:47,064 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:21:47,064 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:21:47,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:21:47,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:21:47,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:21:47,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:21:47,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:21:47,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:21:47,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:21:47,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:21:47,066 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:21:47,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:21:47,071 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:21:47,072 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:21:47,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:21:47,072 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 [2021-12-28 03:21:47,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:21:47,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:21:47,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:21:47,434 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:21:47,434 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:21:47,436 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2021-12-28 03:21:47,492 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f32b50003/c578b09cd31644c78cb082a23f9a30e0/FLAG258e64b74 [2021-12-28 03:21:48,224 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:21:48,225 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2021-12-28 03:21:48,262 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f32b50003/c578b09cd31644c78cb082a23f9a30e0/FLAG258e64b74 [2021-12-28 03:21:48,307 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f32b50003/c578b09cd31644c78cb082a23f9a30e0 [2021-12-28 03:21:48,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:21:48,310 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:21:48,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:21:48,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:21:48,313 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:21:48,313 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:21:48" (1/1) ... [2021-12-28 03:21:48,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2db9f6b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:48, skipping insertion in model container [2021-12-28 03:21:48,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:21:48" (1/1) ... [2021-12-28 03:21:48,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:21:48,415 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:21:48,676 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_priority_queue_s_sift_down_harness.i[4504,4517] [2021-12-28 03:21:48,681 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_priority_queue_s_sift_down_harness.i[4564,4577] [2021-12-28 03:21:49,292 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,292 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,293 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,293 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,294 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,311 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,312 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,314 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,314 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,316 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,317 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,318 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,318 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,563 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:21:49,564 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:21:49,565 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:21:49,566 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:21:49,567 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:21:49,569 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:21:49,570 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:21:49,570 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:21:49,571 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:21:49,572 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:21:49,677 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:21:49,694 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,695 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,698 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,703 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,761 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,762 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,762 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,762 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,762 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,763 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,763 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,763 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,764 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,764 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,764 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,764 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,764 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,766 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,767 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,767 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,767 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,769 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,769 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,781 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,782 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,782 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,801 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:21:49,841 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:21:49,866 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_priority_queue_s_sift_down_harness.i[4504,4517] [2021-12-28 03:21:49,867 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_priority_queue_s_sift_down_harness.i[4564,4577] [2021-12-28 03:21:49,922 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,922 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,923 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,923 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,926 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,934 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,935 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,936 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,936 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,938 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,938 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,938 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,939 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:49,974 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:21:49,975 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:21:49,976 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:21:49,977 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:21:49,978 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:21:49,978 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:21:49,979 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:21:49,979 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:21:49,979 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:21:49,980 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:21:49,997 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:21:50,023 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:50,024 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:50,025 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:50,030 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:50,061 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:50,062 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:50,062 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:50,063 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:50,063 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:50,064 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:50,064 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:50,064 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:50,065 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:50,065 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:50,066 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:50,066 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:50,067 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:50,067 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:50,068 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:50,069 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:50,069 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:50,071 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:50,071 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:50,075 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:50,076 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:50,076 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:21:50,090 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:21:50,360 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:21:50,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:50 WrapperNode [2021-12-28 03:21:50,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:21:50,362 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:21:50,362 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:21:50,363 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:21:50,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:50" (1/1) ... [2021-12-28 03:21:50,465 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:50" (1/1) ... [2021-12-28 03:21:50,567 INFO L137 Inliner]: procedures = 697, calls = 1905, calls flagged for inlining = 59, calls inlined = 14, statements flattened = 840 [2021-12-28 03:21:50,568 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:21:50,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:21:50,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:21:50,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:21:50,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:50" (1/1) ... [2021-12-28 03:21:50,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:50" (1/1) ... [2021-12-28 03:21:50,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:50" (1/1) ... [2021-12-28 03:21:50,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:50" (1/1) ... [2021-12-28 03:21:50,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:50" (1/1) ... [2021-12-28 03:21:50,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:50" (1/1) ... [2021-12-28 03:21:50,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:50" (1/1) ... [2021-12-28 03:21:50,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:21:50,682 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:21:50,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:21:50,689 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:21:50,690 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:50" (1/1) ... [2021-12-28 03:21:50,705 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:21:50,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:50,749 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 03:21:50,795 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 03:21:50,802 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2021-12-28 03:21:50,803 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2021-12-28 03:21:50,803 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-12-28 03:21:50,803 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-12-28 03:21:50,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:21:50,803 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-12-28 03:21:50,803 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-12-28 03:21:50,803 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-28 03:21:50,804 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-28 03:21:50,804 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-28 03:21:50,804 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-28 03:21:50,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:21:50,805 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-28 03:21:50,805 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-28 03:21:50,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-28 03:21:50,805 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-28 03:21:50,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:21:50,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:21:50,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:21:50,809 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-12-28 03:21:50,809 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-12-28 03:21:50,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:21:50,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:21:50,810 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-28 03:21:50,810 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-28 03:21:50,810 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2021-12-28 03:21:50,810 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2021-12-28 03:21:50,815 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-28 03:21:50,815 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-28 03:21:50,815 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-12-28 03:21:50,815 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-12-28 03:21:50,815 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-12-28 03:21:50,815 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-12-28 03:21:50,816 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-12-28 03:21:50,816 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-12-28 03:21:50,816 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 03:21:50,816 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 03:21:50,816 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-12-28 03:21:50,816 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-12-28 03:21:50,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:21:50,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:21:50,817 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_down [2021-12-28 03:21:50,817 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_down [2021-12-28 03:21:50,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:21:50,817 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2021-12-28 03:21:50,817 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2021-12-28 03:21:50,817 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-28 03:21:50,817 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-28 03:21:50,817 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-28 03:21:50,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-28 03:21:50,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:21:50,818 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-12-28 03:21:50,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-12-28 03:21:50,818 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2021-12-28 03:21:50,818 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2021-12-28 03:21:50,818 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-28 03:21:50,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-28 03:21:50,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:21:51,100 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:21:51,102 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:21:52,041 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:21:52,050 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:21:52,050 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-28 03:21:52,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:21:52 BoogieIcfgContainer [2021-12-28 03:21:52,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:21:52,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:21:52,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:21:52,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:21:52,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:21:48" (1/3) ... [2021-12-28 03:21:52,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@732a16bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:21:52, skipping insertion in model container [2021-12-28 03:21:52,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:21:50" (2/3) ... [2021-12-28 03:21:52,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@732a16bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:21:52, skipping insertion in model container [2021-12-28 03:21:52,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:21:52" (3/3) ... [2021-12-28 03:21:52,059 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_down_harness.i [2021-12-28 03:21:52,063 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:21:52,063 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:21:52,102 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:21:52,108 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 03:21:52,108 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:21:52,130 INFO L276 IsEmpty]: Start isEmpty. Operand has 326 states, 197 states have (on average 1.233502538071066) internal successors, (243), 198 states have internal predecessors, (243), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2021-12-28 03:21:52,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-28 03:21:52,160 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:52,161 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:21:52,161 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:52,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:52,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1627804587, now seen corresponding path program 1 times [2021-12-28 03:21:52,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:52,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825184889] [2021-12-28 03:21:52,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:52,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:52,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:52,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:21:52,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:52,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:21:52,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:52,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:21:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:52,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 03:21:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:52,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:21:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:52,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 03:21:52,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:52,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:21:52,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:52,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-28 03:21:52,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:52,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-28 03:21:52,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:52,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-28 03:21:52,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:52,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:21:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:52,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 03:21:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:52,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 03:21:52,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:52,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:21:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:52,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 03:21:52,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:52,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 03:21:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:52,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 03:21:52,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:52,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 03:21:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:52,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-28 03:21:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:52,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-28 03:21:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:52,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 03:21:52,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:52,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-28 03:21:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:53,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-28 03:21:53,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:53,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-28 03:21:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:53,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-28 03:21:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:53,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-28 03:21:53,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:53,041 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2021-12-28 03:21:53,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:53,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825184889] [2021-12-28 03:21:53,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825184889] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:21:53,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:21:53,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:21:53,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148786440] [2021-12-28 03:21:53,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:21:53,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:21:53,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:53,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:21:53,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:21:53,082 INFO L87 Difference]: Start difference. First operand has 326 states, 197 states have (on average 1.233502538071066) internal successors, (243), 198 states have internal predecessors, (243), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-28 03:21:54,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:21:54,099 INFO L93 Difference]: Finished difference Result 731 states and 1164 transitions. [2021-12-28 03:21:54,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 03:21:54,101 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 156 [2021-12-28 03:21:54,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:21:54,117 INFO L225 Difference]: With dead ends: 731 [2021-12-28 03:21:54,118 INFO L226 Difference]: Without dead ends: 423 [2021-12-28 03:21:54,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:21:54,127 INFO L933 BasicCegarLoop]: 413 mSDtfsCounter, 127 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-28 03:21:54,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 641 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-28 03:21:54,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2021-12-28 03:21:54,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 321. [2021-12-28 03:21:54,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 193 states have (on average 1.2020725388601037) internal successors, (232), 194 states have internal predecessors, (232), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2021-12-28 03:21:54,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 439 transitions. [2021-12-28 03:21:54,199 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 439 transitions. Word has length 156 [2021-12-28 03:21:54,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:21:54,200 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 439 transitions. [2021-12-28 03:21:54,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-28 03:21:54,201 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 439 transitions. [2021-12-28 03:21:54,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-28 03:21:54,208 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:54,208 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:21:54,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:21:54,209 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:54,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:54,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1159929871, now seen corresponding path program 1 times [2021-12-28 03:21:54,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:54,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169429440] [2021-12-28 03:21:54,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:54,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:54,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:54,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:21:54,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:54,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:21:54,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:54,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:21:54,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:54,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 03:21:54,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:54,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:21:54,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:54,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 03:21:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:54,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:21:54,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:54,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-28 03:21:54,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:54,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-28 03:21:54,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:54,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-28 03:21:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:54,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:21:54,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:54,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 03:21:54,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:54,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 03:21:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:54,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:21:54,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:54,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 03:21:54,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:54,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 03:21:54,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:54,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 03:21:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:54,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 03:21:54,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:54,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-28 03:21:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:54,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-28 03:21:54,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:54,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 03:21:54,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:54,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-28 03:21:54,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:54,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-28 03:21:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:54,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-28 03:21:54,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:54,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-28 03:21:54,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:54,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-28 03:21:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:54,711 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2021-12-28 03:21:54,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:54,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169429440] [2021-12-28 03:21:54,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169429440] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:21:54,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548247820] [2021-12-28 03:21:54,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:54,713 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:54,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:54,719 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:21:54,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 03:21:55,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:55,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 2330 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-28 03:21:55,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:21:55,437 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-28 03:21:55,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:21:55,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548247820] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:21:55,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:21:55,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2021-12-28 03:21:55,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380897041] [2021-12-28 03:21:55,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:21:55,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:21:55,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:55,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:21:55,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-28 03:21:55,441 INFO L87 Difference]: Start difference. First operand 321 states and 439 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-28 03:21:55,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:21:55,669 INFO L93 Difference]: Finished difference Result 596 states and 820 transitions. [2021-12-28 03:21:55,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:21:55,670 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 156 [2021-12-28 03:21:55,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:21:55,676 INFO L225 Difference]: With dead ends: 596 [2021-12-28 03:21:55,676 INFO L226 Difference]: Without dead ends: 323 [2021-12-28 03:21:55,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-12-28 03:21:55,678 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 456 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:21:55,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [464 Valid, 1503 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 03:21:55,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-12-28 03:21:55,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2021-12-28 03:21:55,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 194 states have (on average 1.2010309278350515) internal successors, (233), 196 states have internal predecessors, (233), 104 states have call successors, (104), 23 states have call predecessors, (104), 24 states have return successors, (107), 103 states have call predecessors, (107), 103 states have call successors, (107) [2021-12-28 03:21:55,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 444 transitions. [2021-12-28 03:21:55,708 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 444 transitions. Word has length 156 [2021-12-28 03:21:55,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:21:55,709 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 444 transitions. [2021-12-28 03:21:55,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-28 03:21:55,710 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 444 transitions. [2021-12-28 03:21:55,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-28 03:21:55,712 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:55,713 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:21:55,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-28 03:21:55,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:55,933 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:55,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:55,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1288218285, now seen corresponding path program 1 times [2021-12-28 03:21:55,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:55,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450896685] [2021-12-28 03:21:55,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:55,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:55,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:56,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:21:56,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:56,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-28 03:21:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:56,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 03:21:56,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:56,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 03:21:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:56,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 03:21:56,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:56,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 03:21:56,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:56,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:21:56,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:56,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-28 03:21:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:56,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-28 03:21:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:56,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-28 03:21:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:56,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:21:56,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:56,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 03:21:56,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:56,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 03:21:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:56,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:21:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:56,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-28 03:21:56,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:56,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 03:21:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:56,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:21:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:56,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 03:21:56,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:56,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-28 03:21:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:56,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 03:21:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:56,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-28 03:21:56,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:56,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-28 03:21:56,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:56,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-28 03:21:56,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:56,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-28 03:21:56,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:56,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-28 03:21:56,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:56,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-28 03:21:56,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:56,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-28 03:21:56,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:56,425 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2021-12-28 03:21:56,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:56,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450896685] [2021-12-28 03:21:56,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450896685] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:21:56,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181843861] [2021-12-28 03:21:56,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:56,426 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:56,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:56,428 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:21:56,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 03:21:56,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:56,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 2380 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-28 03:21:56,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:21:57,202 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-28 03:21:57,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:21:57,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181843861] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:21:57,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:21:57,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2021-12-28 03:21:57,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990039471] [2021-12-28 03:21:57,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:21:57,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:21:57,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:57,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:21:57,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2021-12-28 03:21:57,204 INFO L87 Difference]: Start difference. First operand 323 states and 444 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-28 03:21:57,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:21:57,581 INFO L93 Difference]: Finished difference Result 619 states and 867 transitions. [2021-12-28 03:21:57,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:21:57,584 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 164 [2021-12-28 03:21:57,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:21:57,587 INFO L225 Difference]: With dead ends: 619 [2021-12-28 03:21:57,587 INFO L226 Difference]: Without dead ends: 344 [2021-12-28 03:21:57,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2021-12-28 03:21:57,590 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 518 mSDsluCounter, 1793 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 2169 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 03:21:57,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [542 Valid, 2169 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 03:21:57,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-12-28 03:21:57,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 342. [2021-12-28 03:21:57,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 210 states have (on average 1.2142857142857142) internal successors, (255), 212 states have internal predecessors, (255), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2021-12-28 03:21:57,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 481 transitions. [2021-12-28 03:21:57,620 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 481 transitions. Word has length 164 [2021-12-28 03:21:57,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:21:57,621 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 481 transitions. [2021-12-28 03:21:57,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-28 03:21:57,621 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 481 transitions. [2021-12-28 03:21:57,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-28 03:21:57,624 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:57,624 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 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 03:21:57,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 03:21:57,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-28 03:21:57,848 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:57,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:57,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1645223367, now seen corresponding path program 1 times [2021-12-28 03:21:57,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:57,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285995864] [2021-12-28 03:21:57,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:57,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:57,910 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:21:57,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1520578294] [2021-12-28 03:21:57,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:57,911 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:57,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:57,912 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:21:57,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 03:21:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:58,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 2521 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-28 03:21:58,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:21:58,669 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-28 03:21:58,670 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:21:58,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:21:58,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285995864] [2021-12-28 03:21:58,670 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:21:58,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520578294] [2021-12-28 03:21:58,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520578294] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:21:58,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:21:58,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 03:21:58,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018111109] [2021-12-28 03:21:58,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:21:58,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:21:58,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:21:58,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:21:58,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:21:58,673 INFO L87 Difference]: Start difference. First operand 342 states and 481 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2021-12-28 03:21:58,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:21:58,930 INFO L93 Difference]: Finished difference Result 644 states and 916 transitions. [2021-12-28 03:21:58,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:21:58,931 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 179 [2021-12-28 03:21:58,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:21:58,934 INFO L225 Difference]: With dead ends: 644 [2021-12-28 03:21:58,934 INFO L226 Difference]: Without dead ends: 350 [2021-12-28 03:21:58,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-12-28 03:21:58,937 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 480 mSDsluCounter, 1463 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 1847 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:21:58,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [488 Valid, 1847 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 03:21:58,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-12-28 03:21:58,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 342. [2021-12-28 03:21:58,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 210 states have (on average 1.2142857142857142) internal successors, (255), 212 states have internal predecessors, (255), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2021-12-28 03:21:58,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 481 transitions. [2021-12-28 03:21:58,964 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 481 transitions. Word has length 179 [2021-12-28 03:21:58,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:21:58,964 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 481 transitions. [2021-12-28 03:21:58,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2021-12-28 03:21:58,965 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 481 transitions. [2021-12-28 03:21:58,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-12-28 03:21:58,967 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:21:58,968 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:21:58,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-28 03:21:59,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:59,190 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:21:59,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:21:59,190 INFO L85 PathProgramCache]: Analyzing trace with hash 706739126, now seen corresponding path program 1 times [2021-12-28 03:21:59,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:21:59,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333950947] [2021-12-28 03:21:59,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:59,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:21:59,259 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:21:59,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1919555429] [2021-12-28 03:21:59,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:21:59,260 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:21:59,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:21:59,262 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:21:59,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 03:21:59,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:21:59,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 2593 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-28 03:21:59,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:22:00,114 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-12-28 03:22:00,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:22:00,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:22:00,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333950947] [2021-12-28 03:22:00,115 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:22:00,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919555429] [2021-12-28 03:22:00,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919555429] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:22:00,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:22:00,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 03:22:00,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007857738] [2021-12-28 03:22:00,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:22:00,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 03:22:00,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:22:00,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 03:22:00,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 03:22:00,117 INFO L87 Difference]: Start difference. First operand 342 states and 481 transitions. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2021-12-28 03:22:00,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:22:00,555 INFO L93 Difference]: Finished difference Result 654 states and 929 transitions. [2021-12-28 03:22:00,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 03:22:00,556 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) Word has length 195 [2021-12-28 03:22:00,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:22:00,559 INFO L225 Difference]: With dead ends: 654 [2021-12-28 03:22:00,559 INFO L226 Difference]: Without dead ends: 360 [2021-12-28 03:22:00,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-12-28 03:22:00,562 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 551 mSDsluCounter, 2113 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 2482 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 03:22:00,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [575 Valid, 2482 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 03:22:00,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-12-28 03:22:00,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 342. [2021-12-28 03:22:00,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 210 states have (on average 1.2142857142857142) internal successors, (255), 212 states have internal predecessors, (255), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2021-12-28 03:22:00,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 481 transitions. [2021-12-28 03:22:00,614 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 481 transitions. Word has length 195 [2021-12-28 03:22:00,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:22:00,615 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 481 transitions. [2021-12-28 03:22:00,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2021-12-28 03:22:00,615 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 481 transitions. [2021-12-28 03:22:00,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-12-28 03:22:00,619 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:00,619 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:22:00,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-28 03:22:00,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:00,842 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:00,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:00,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1820952612, now seen corresponding path program 2 times [2021-12-28 03:22:00,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:22:00,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315287577] [2021-12-28 03:22:00,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:00,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:22:00,911 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-28 03:22:00,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [335777795] [2021-12-28 03:22:00,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:22:00,912 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:00,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:22:00,914 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:22:00,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-28 03:22:01,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 03:22:01,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:22:01,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 2734 conjuncts, 245 conjunts are in the unsatisfiable core [2021-12-28 03:22:01,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:22:01,813 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-12-28 03:22:01,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:22:01,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:22:01,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:22:01,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:22:01,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:22:01,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:22:01,915 INFO L353 Elim1Store]: treesize reduction 12, result has 78.9 percent of original size [2021-12-28 03:22:01,915 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 44 treesize of output 60 [2021-12-28 03:22:03,889 INFO L353 Elim1Store]: treesize reduction 344, result has 50.1 percent of original size [2021-12-28 03:22:03,891 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 87 select indices, 87 select index equivalence classes, 3655 disjoint index pairs (out of 3741 index pairs), introduced 87 new quantified variables, introduced 86 case distinctions, treesize of input 436 treesize of output 606 [2021-12-28 03:22:19,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:22:19,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315287577] [2021-12-28 03:22:19,107 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-28 03:22:19,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335777795] [2021-12-28 03:22:19,107 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2021-12-28 03:22:19,128 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-28 03:22:19,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:22:19,309 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.OutOfMemoryError: Requested array size exceeds VM limit at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir$ExplicitLhsPolynomialRelations.buildCorrespondingFiniteJunctionForAntiDer(DualJunctionTir.java:684) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir$ExplicitLhsPolynomialRelations.buildBoundConstraint(DualJunctionTir.java:554) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateConjuncts(DualJunctionTir.java:228) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne(DualJunctionTir.java:177) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryExhaustivelyToEliminate(DualJunctionTir.java:142) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminate(DualJunctionTir.java:129) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:904) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:865) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:783) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:425) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:65) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:261) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:247) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:92) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java: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) [2021-12-28 03:22:19,313 INFO L158 Benchmark]: Toolchain (without parser) took 31002.35ms. Allocated memory was 52.4MB in the beginning and 570.4MB in the end (delta: 518.0MB). Free memory was 32.6MB in the beginning and 263.2MB in the end (delta: -230.6MB). Peak memory consumption was 287.1MB. Max. memory is 16.1GB. [2021-12-28 03:22:19,313 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 52.4MB. Free memory was 34.6MB in the beginning and 34.5MB in the end (delta: 38.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 03:22:19,314 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2050.94ms. Allocated memory was 52.4MB in the beginning and 92.3MB in the end (delta: 39.8MB). Free memory was 32.4MB in the beginning and 49.9MB in the end (delta: -17.6MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2021-12-28 03:22:19,314 INFO L158 Benchmark]: Boogie Procedure Inliner took 206.08ms. Allocated memory is still 92.3MB. Free memory was 49.5MB in the beginning and 39.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-28 03:22:19,314 INFO L158 Benchmark]: Boogie Preprocessor took 112.23ms. Allocated memory is still 92.3MB. Free memory was 39.0MB in the beginning and 31.5MB in the end (delta: 7.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-28 03:22:19,314 INFO L158 Benchmark]: RCFGBuilder took 1370.82ms. Allocated memory was 92.3MB in the beginning and 155.2MB in the end (delta: 62.9MB). Free memory was 31.5MB in the beginning and 83.5MB in the end (delta: -52.1MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. [2021-12-28 03:22:19,315 INFO L158 Benchmark]: TraceAbstraction took 27257.90ms. Allocated memory was 155.2MB in the beginning and 570.4MB in the end (delta: 415.2MB). Free memory was 83.5MB in the beginning and 263.2MB in the end (delta: -179.7MB). Peak memory consumption was 236.6MB. Max. memory is 16.1GB. [2021-12-28 03:22:19,316 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 52.4MB. Free memory was 34.6MB in the beginning and 34.5MB in the end (delta: 38.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2050.94ms. Allocated memory was 52.4MB in the beginning and 92.3MB in the end (delta: 39.8MB). Free memory was 32.4MB in the beginning and 49.9MB in the end (delta: -17.6MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 206.08ms. Allocated memory is still 92.3MB. Free memory was 49.5MB in the beginning and 39.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 112.23ms. Allocated memory is still 92.3MB. Free memory was 39.0MB in the beginning and 31.5MB in the end (delta: 7.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1370.82ms. Allocated memory was 92.3MB in the beginning and 155.2MB in the end (delta: 62.9MB). Free memory was 31.5MB in the beginning and 83.5MB in the end (delta: -52.1MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. * TraceAbstraction took 27257.90ms. Allocated memory was 155.2MB in the beginning and 570.4MB in the end (delta: 415.2MB). Free memory was 83.5MB in the beginning and 263.2MB in the end (delta: -179.7MB). Peak memory consumption was 236.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: OutOfMemoryError: Requested array size exceeds VM limit de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: OutOfMemoryError: Requested array size exceeds VM limit: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir$ExplicitLhsPolynomialRelations.buildCorrespondingFiniteJunctionForAntiDer(DualJunctionTir.java:684) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-28 03:22:19,330 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_priority_queue_s_sift_down_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 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 03:22:21,091 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:22:21,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:22:21,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:22:21,128 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:22:21,132 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:22:21,133 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:22:21,136 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:22:21,138 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:22:21,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:22:21,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:22:21,147 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:22:21,147 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:22:21,149 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:22:21,151 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:22:21,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:22:21,154 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:22:21,155 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:22:21,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:22:21,162 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:22:21,163 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:22:21,164 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:22:21,165 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:22:21,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:22:21,173 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:22:21,173 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:22:21,174 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:22:21,175 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:22:21,176 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:22:21,176 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:22:21,177 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:22:21,178 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:22:21,179 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:22:21,180 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:22:21,181 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:22:21,181 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:22:21,182 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:22:21,182 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:22:21,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:22:21,184 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:22:21,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:22:21,189 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-12-28 03:22:21,214 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:22:21,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:22:21,215 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:22:21,215 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:22:21,216 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:22:21,216 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:22:21,217 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:22:21,217 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:22:21,217 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:22:21,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:22:21,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:22:21,219 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:22:21,219 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:22:21,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:22:21,219 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-28 03:22:21,219 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-28 03:22:21,220 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-28 03:22:21,220 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:22:21,220 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:22:21,220 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:22:21,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:22:21,221 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:22:21,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:22:21,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:22:21,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:22:21,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:22:21,227 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:22:21,227 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-28 03:22:21,227 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-28 03:22:21,227 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:22:21,227 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:22:21,228 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:22:21,228 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-28 03:22:21,228 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 [2021-12-28 03:22:21,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:22:21,576 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:22:21,579 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:22:21,579 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:22:21,581 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:22:21,583 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2021-12-28 03:22:21,639 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03bf69542/cee9801199e6405a815ffa7683e5b732/FLAGac056afc9 [2021-12-28 03:22:22,317 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:22:22,317 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2021-12-28 03:22:22,348 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03bf69542/cee9801199e6405a815ffa7683e5b732/FLAGac056afc9 [2021-12-28 03:22:22,658 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03bf69542/cee9801199e6405a815ffa7683e5b732 [2021-12-28 03:22:22,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:22:22,663 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:22:22,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:22:22,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:22:22,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:22:22,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:22:22" (1/1) ... [2021-12-28 03:22:22,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aab5819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:22:22, skipping insertion in model container [2021-12-28 03:22:22,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:22:22" (1/1) ... [2021-12-28 03:22:22,675 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:22:22,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:22:23,006 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_priority_queue_s_sift_down_harness.i[4504,4517] [2021-12-28 03:22:23,013 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_priority_queue_s_sift_down_harness.i[4564,4577] [2021-12-28 03:22:23,603 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:23,604 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:23,604 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:23,606 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:23,607 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:23,620 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:23,621 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:23,622 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:23,623 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:23,624 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:23,625 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:23,625 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:23,626 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:23,886 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:22:23,888 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:22:23,891 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:22:23,892 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:22:23,893 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:22:23,895 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:22:23,895 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:22:23,896 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:22:23,906 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:22:23,907 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:22:24,005 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:22:24,048 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,048 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,052 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,062 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,136 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,138 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,140 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,140 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,141 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,141 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,142 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,142 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,143 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,143 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,143 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,143 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,144 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,146 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,146 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,147 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,147 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,154 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,154 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,163 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,163 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,164 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,188 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:22:24,228 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-28 03:22:24,269 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:22:24,274 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_priority_queue_s_sift_down_harness.i[4504,4517] [2021-12-28 03:22:24,275 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_priority_queue_s_sift_down_harness.i[4564,4577] [2021-12-28 03:22:24,315 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,316 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,316 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,316 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,317 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,323 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,324 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,324 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,325 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,326 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,326 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,327 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,327 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,357 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:22:24,374 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:22:24,375 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:22:24,375 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:22:24,376 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:22:24,376 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:22:24,377 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:22:24,377 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:22:24,377 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:22:24,378 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:22:24,402 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:22:24,413 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,414 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,414 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,418 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,447 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,448 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,452 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,452 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,453 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,453 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,454 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,454 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,454 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,455 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,455 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,456 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,456 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,457 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,457 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,457 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,457 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,460 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,460 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,473 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,474 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,474 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,484 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:22:24,498 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:22:24,514 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_priority_queue_s_sift_down_harness.i[4504,4517] [2021-12-28 03:22:24,515 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_priority_queue_s_sift_down_harness.i[4564,4577] [2021-12-28 03:22:24,542 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,543 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,543 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,544 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,544 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,548 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,548 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,551 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,551 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,552 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,552 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,552 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,553 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,623 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-28 03:22:24,624 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-28 03:22:24,624 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-28 03:22:24,625 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-28 03:22:24,625 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-28 03:22:24,626 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-28 03:22:24,626 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-28 03:22:24,627 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-28 03:22:24,627 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-28 03:22:24,628 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-28 03:22:24,655 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-28 03:22:24,665 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,666 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,666 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,670 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,710 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,711 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,712 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,712 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,712 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,712 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,713 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,713 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,713 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,714 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,714 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,715 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,717 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,728 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,729 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,729 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,730 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,732 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,732 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,737 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,738 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,743 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-28 03:22:24,749 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:22:25,033 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:22:25,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:22:25 WrapperNode [2021-12-28 03:22:25,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:22:25,035 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:22:25,035 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:22:25,035 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:22:25,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:22:25" (1/1) ... [2021-12-28 03:22:25,134 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:22:25" (1/1) ... [2021-12-28 03:22:25,212 INFO L137 Inliner]: procedures = 717, calls = 1905, calls flagged for inlining = 59, calls inlined = 14, statements flattened = 834 [2021-12-28 03:22:25,215 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:22:25,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:22:25,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:22:25,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:22:25,223 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:22:25" (1/1) ... [2021-12-28 03:22:25,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:22:25" (1/1) ... [2021-12-28 03:22:25,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:22:25" (1/1) ... [2021-12-28 03:22:25,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:22:25" (1/1) ... [2021-12-28 03:22:25,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:22:25" (1/1) ... [2021-12-28 03:22:25,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:22:25" (1/1) ... [2021-12-28 03:22:25,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:22:25" (1/1) ... [2021-12-28 03:22:25,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:22:25,350 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:22:25,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:22:25,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:22:25,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:22:25" (1/1) ... [2021-12-28 03:22:25,357 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:22:25,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:22:25,376 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 03:22:25,402 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 03:22:25,416 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2021-12-28 03:22:25,417 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2021-12-28 03:22:25,417 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-12-28 03:22:25,417 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-12-28 03:22:25,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:22:25,417 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-12-28 03:22:25,417 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-12-28 03:22:25,418 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-28 03:22:25,418 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-28 03:22:25,418 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-28 03:22:25,418 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-28 03:22:25,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-28 03:22:25,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-12-28 03:22:25,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-12-28 03:22:25,418 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-28 03:22:25,419 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-28 03:22:25,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-28 03:22:25,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-28 03:22:25,419 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-12-28 03:22:25,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-12-28 03:22:25,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:22:25,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:22:25,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:22:25,420 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-12-28 03:22:25,420 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-12-28 03:22:25,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:22:25,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:22:25,420 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-28 03:22:25,420 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-28 03:22:25,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-28 03:22:25,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-12-28 03:22:25,420 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2021-12-28 03:22:25,421 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2021-12-28 03:22:25,421 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-28 03:22:25,421 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-28 03:22:25,421 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-12-28 03:22:25,421 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-12-28 03:22:25,421 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-12-28 03:22:25,421 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-12-28 03:22:25,421 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-12-28 03:22:25,422 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-12-28 03:22:25,422 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 03:22:25,422 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 03:22:25,422 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-12-28 03:22:25,422 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-12-28 03:22:25,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:22:25,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:22:25,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-12-28 03:22:25,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-28 03:22:25,423 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_down [2021-12-28 03:22:25,423 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_down [2021-12-28 03:22:25,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:22:25,423 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2021-12-28 03:22:25,423 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2021-12-28 03:22:25,423 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-28 03:22:25,423 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-28 03:22:25,423 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-28 03:22:25,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-28 03:22:25,424 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-12-28 03:22:25,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-12-28 03:22:25,424 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2021-12-28 03:22:25,424 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2021-12-28 03:22:25,768 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:22:25,770 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:22:27,583 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:22:27,600 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:22:27,600 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-28 03:22:27,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:22:27 BoogieIcfgContainer [2021-12-28 03:22:27,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:22:27,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:22:27,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:22:27,609 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:22:27,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:22:22" (1/3) ... [2021-12-28 03:22:27,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@181350a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:22:27, skipping insertion in model container [2021-12-28 03:22:27,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:22:25" (2/3) ... [2021-12-28 03:22:27,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@181350a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:22:27, skipping insertion in model container [2021-12-28 03:22:27,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:22:27" (3/3) ... [2021-12-28 03:22:27,612 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_down_harness.i [2021-12-28 03:22:27,624 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:22:27,625 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:22:27,676 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:22:27,684 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 03:22:27,685 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:22:27,708 INFO L276 IsEmpty]: Start isEmpty. Operand has 324 states, 195 states have (on average 1.235897435897436) internal successors, (241), 196 states have internal predecessors, (241), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2021-12-28 03:22:27,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-28 03:22:27,730 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:27,731 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:22:27,734 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:27,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:27,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1926734945, now seen corresponding path program 1 times [2021-12-28 03:22:27,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 03:22:27,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1211227649] [2021-12-28 03:22:27,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:27,755 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 03:22:27,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 03:22:27,757 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 03:22:27,759 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 03:22:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:28,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 1447 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-28 03:22:28,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:22:28,799 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-12-28 03:22:28,800 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:22:28,800 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 03:22:28,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1211227649] [2021-12-28 03:22:28,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1211227649] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:22:28,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:22:28,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 03:22:28,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344599969] [2021-12-28 03:22:28,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:22:28,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-28 03:22:28,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 03:22:28,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-28 03:22:28,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-28 03:22:28,838 INFO L87 Difference]: Start difference. First operand has 324 states, 195 states have (on average 1.235897435897436) internal successors, (241), 196 states have internal predecessors, (241), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-28 03:22:28,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:22:28,893 INFO L93 Difference]: Finished difference Result 625 states and 944 transitions. [2021-12-28 03:22:28,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-28 03:22:28,895 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 156 [2021-12-28 03:22:28,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:22:28,912 INFO L225 Difference]: With dead ends: 625 [2021-12-28 03:22:28,912 INFO L226 Difference]: Without dead ends: 319 [2021-12-28 03:22:28,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 155 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 03:22:28,921 INFO L933 BasicCegarLoop]: 442 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, 442 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 03:22:28,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:22:28,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2021-12-28 03:22:28,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2021-12-28 03:22:28,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 191 states have (on average 1.2041884816753927) internal successors, (230), 192 states have internal predecessors, (230), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2021-12-28 03:22:28,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 437 transitions. [2021-12-28 03:22:28,985 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 437 transitions. Word has length 156 [2021-12-28 03:22:28,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:22:28,986 INFO L470 AbstractCegarLoop]: Abstraction has 319 states and 437 transitions. [2021-12-28 03:22:28,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-28 03:22:28,987 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 437 transitions. [2021-12-28 03:22:28,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-28 03:22:28,989 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:28,989 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:22:29,019 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 03:22:29,211 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 03:22:29,212 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:29,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:29,212 INFO L85 PathProgramCache]: Analyzing trace with hash -860999513, now seen corresponding path program 1 times [2021-12-28 03:22:29,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 03:22:29,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [991694180] [2021-12-28 03:22:29,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:29,215 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 03:22:29,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 03:22:29,216 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 03:22:29,246 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 03:22:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:29,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 1447 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 03:22:29,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:22:30,203 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-28 03:22:30,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:22:30,204 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 03:22:30,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [991694180] [2021-12-28 03:22:30,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [991694180] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:22:30,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:22:30,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:22:30,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023229055] [2021-12-28 03:22:30,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:22:30,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:22:30,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 03:22:30,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:22:30,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:22:30,208 INFO L87 Difference]: Start difference. First operand 319 states and 437 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-28 03:22:30,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:22:30,513 INFO L93 Difference]: Finished difference Result 592 states and 816 transitions. [2021-12-28 03:22:30,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 03:22:30,517 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 156 [2021-12-28 03:22:30,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:22:30,521 INFO L225 Difference]: With dead ends: 592 [2021-12-28 03:22:30,522 INFO L226 Difference]: Without dead ends: 321 [2021-12-28 03:22:30,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 152 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 03:22:30,524 INFO L933 BasicCegarLoop]: 416 mSDtfsCounter, 47 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 1582 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 03:22:30,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 1582 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 03:22:30,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-12-28 03:22:30,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2021-12-28 03:22:30,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 192 states have (on average 1.203125) internal successors, (231), 194 states have internal predecessors, (231), 104 states have call successors, (104), 23 states have call predecessors, (104), 24 states have return successors, (107), 103 states have call predecessors, (107), 103 states have call successors, (107) [2021-12-28 03:22:30,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 442 transitions. [2021-12-28 03:22:30,546 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 442 transitions. Word has length 156 [2021-12-28 03:22:30,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:22:30,547 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 442 transitions. [2021-12-28 03:22:30,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-28 03:22:30,547 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 442 transitions. [2021-12-28 03:22:30,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-28 03:22:30,549 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:30,549 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:22:30,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-28 03:22:30,771 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 03:22:30,772 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:30,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:30,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1740163981, now seen corresponding path program 1 times [2021-12-28 03:22:30,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 03:22:30,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1272138748] [2021-12-28 03:22:30,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:30,775 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 03:22:30,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 03:22:30,776 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 03:22:30,778 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 03:22:31,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:31,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 1477 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 03:22:31,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:22:31,845 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-28 03:22:31,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:22:31,846 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 03:22:31,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1272138748] [2021-12-28 03:22:31,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1272138748] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:22:31,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:22:31,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 03:22:31,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661014598] [2021-12-28 03:22:31,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:22:31,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:22:31,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 03:22:31,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:22:31,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:22:31,849 INFO L87 Difference]: Start difference. First operand 321 states and 442 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-28 03:22:32,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:22:32,493 INFO L93 Difference]: Finished difference Result 615 states and 863 transitions. [2021-12-28 03:22:32,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:22:32,494 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 164 [2021-12-28 03:22:32,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:22:32,497 INFO L225 Difference]: With dead ends: 615 [2021-12-28 03:22:32,497 INFO L226 Difference]: Without dead ends: 342 [2021-12-28 03:22:32,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-28 03:22:32,500 INFO L933 BasicCegarLoop]: 400 mSDtfsCounter, 99 mSDsluCounter, 1890 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 2290 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 03:22:32,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 2290 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-28 03:22:32,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-12-28 03:22:32,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 340. [2021-12-28 03:22:32,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 208 states have (on average 1.2163461538461537) internal successors, (253), 210 states have internal predecessors, (253), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2021-12-28 03:22:32,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 479 transitions. [2021-12-28 03:22:32,523 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 479 transitions. Word has length 164 [2021-12-28 03:22:32,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:22:32,524 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 479 transitions. [2021-12-28 03:22:32,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-28 03:22:32,524 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 479 transitions. [2021-12-28 03:22:32,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-28 03:22:32,527 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:32,527 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 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 03:22:32,557 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 03:22:32,751 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 03:22:32,752 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:32,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:32,752 INFO L85 PathProgramCache]: Analyzing trace with hash 2064550921, now seen corresponding path program 1 times [2021-12-28 03:22:32,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 03:22:32,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [480536970] [2021-12-28 03:22:32,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:32,754 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 03:22:32,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 03:22:32,755 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 03:22:32,756 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 03:22:33,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:33,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 1589 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 03:22:33,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:22:33,917 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-28 03:22:33,917 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:22:33,917 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 03:22:33,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [480536970] [2021-12-28 03:22:33,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [480536970] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:22:33,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:22:33,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:22:33,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126979917] [2021-12-28 03:22:33,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:22:33,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:22:33,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 03:22:33,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:22:33,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:22:33,920 INFO L87 Difference]: Start difference. First operand 340 states and 479 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2021-12-28 03:22:34,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:22:34,394 INFO L93 Difference]: Finished difference Result 640 states and 912 transitions. [2021-12-28 03:22:34,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:22:34,395 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 179 [2021-12-28 03:22:34,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:22:34,398 INFO L225 Difference]: With dead ends: 640 [2021-12-28 03:22:34,398 INFO L226 Difference]: Without dead ends: 348 [2021-12-28 03:22:34,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-28 03:22:34,400 INFO L933 BasicCegarLoop]: 410 mSDtfsCounter, 70 mSDsluCounter, 1539 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 03:22:34,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 1949 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-28 03:22:34,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-12-28 03:22:34,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 340. [2021-12-28 03:22:34,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 208 states have (on average 1.2163461538461537) internal successors, (253), 210 states have internal predecessors, (253), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2021-12-28 03:22:34,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 479 transitions. [2021-12-28 03:22:34,417 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 479 transitions. Word has length 179 [2021-12-28 03:22:34,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:22:34,418 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 479 transitions. [2021-12-28 03:22:34,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2021-12-28 03:22:34,418 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 479 transitions. [2021-12-28 03:22:34,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-12-28 03:22:34,420 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:34,420 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:22:34,462 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-28 03:22:34,643 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 03:22:34,643 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:34,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:34,644 INFO L85 PathProgramCache]: Analyzing trace with hash 587208436, now seen corresponding path program 1 times [2021-12-28 03:22:34,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 03:22:34,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [552658625] [2021-12-28 03:22:34,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:34,646 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 03:22:34,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 03:22:34,647 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 03:22:34,648 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 03:22:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:22:35,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 1637 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-28 03:22:35,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:22:35,960 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-12-28 03:22:35,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:22:35,960 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 03:22:35,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [552658625] [2021-12-28 03:22:35,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [552658625] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:22:35,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:22:35,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 03:22:35,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048364375] [2021-12-28 03:22:35,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:22:35,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:22:35,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 03:22:35,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:22:35,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:22:35,962 INFO L87 Difference]: Start difference. First operand 340 states and 479 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2021-12-28 03:22:36,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:22:36,982 INFO L93 Difference]: Finished difference Result 662 states and 941 transitions. [2021-12-28 03:22:36,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 03:22:36,983 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) Word has length 195 [2021-12-28 03:22:36,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:22:36,985 INFO L225 Difference]: With dead ends: 662 [2021-12-28 03:22:36,985 INFO L226 Difference]: Without dead ends: 370 [2021-12-28 03:22:36,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-12-28 03:22:36,988 INFO L933 BasicCegarLoop]: 401 mSDtfsCounter, 142 mSDsluCounter, 2266 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 2667 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-28 03:22:36,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 2667 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-28 03:22:36,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2021-12-28 03:22:37,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 352. [2021-12-28 03:22:37,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 218 states have (on average 1.224770642201835) internal successors, (267), 220 states have internal predecessors, (267), 107 states have call successors, (107), 24 states have call predecessors, (107), 26 states have return successors, (121), 107 states have call predecessors, (121), 106 states have call successors, (121) [2021-12-28 03:22:37,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 495 transitions. [2021-12-28 03:22:37,012 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 495 transitions. Word has length 195 [2021-12-28 03:22:37,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:22:37,013 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 495 transitions. [2021-12-28 03:22:37,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2021-12-28 03:22:37,013 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 495 transitions. [2021-12-28 03:22:37,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-12-28 03:22:37,018 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:37,018 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:22:37,055 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 03:22:37,231 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 03:22:37,231 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:37,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:37,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1829094874, now seen corresponding path program 2 times [2021-12-28 03:22:37,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 03:22:37,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [7546416] [2021-12-28 03:22:37,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:22:37,234 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 03:22:37,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 03:22:37,240 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 03:22:37,242 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 03:22:40,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 03:22:40,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:22:40,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 1749 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-28 03:22:40,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:22:41,128 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2021-12-28 03:22:41,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:22:41,128 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 03:22:41,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [7546416] [2021-12-28 03:22:41,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [7546416] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:22:41,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:22:41,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:22:41,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205409465] [2021-12-28 03:22:41,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:22:41,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:22:41,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 03:22:41,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:22:41,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:22:41,130 INFO L87 Difference]: Start difference. First operand 352 states and 495 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-28 03:22:43,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:22:43,655 INFO L93 Difference]: Finished difference Result 692 states and 993 transitions. [2021-12-28 03:22:43,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:22:43,657 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 210 [2021-12-28 03:22:43,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:22:43,661 INFO L225 Difference]: With dead ends: 692 [2021-12-28 03:22:43,661 INFO L226 Difference]: Without dead ends: 388 [2021-12-28 03:22:43,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-28 03:22:43,663 INFO L933 BasicCegarLoop]: 438 mSDtfsCounter, 21 mSDsluCounter, 1582 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2020 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:22:43,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 2020 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-28 03:22:43,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-12-28 03:22:43,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 360. [2021-12-28 03:22:43,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 226 states have (on average 1.2256637168141593) internal successors, (277), 228 states have internal predecessors, (277), 107 states have call successors, (107), 24 states have call predecessors, (107), 26 states have return successors, (121), 107 states have call predecessors, (121), 106 states have call successors, (121) [2021-12-28 03:22:43,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 505 transitions. [2021-12-28 03:22:43,692 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 505 transitions. Word has length 210 [2021-12-28 03:22:43,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:22:43,692 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 505 transitions. [2021-12-28 03:22:43,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-28 03:22:43,693 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 505 transitions. [2021-12-28 03:22:43,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-12-28 03:22:43,697 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:22:43,697 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:22:43,749 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 03:22:43,915 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 03:22:43,915 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:22:43,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:22:43,916 INFO L85 PathProgramCache]: Analyzing trace with hash -731767972, now seen corresponding path program 1 times [2021-12-28 03:22:43,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 03:22:43,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1086185082] [2021-12-28 03:22:43,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:22:43,918 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 03:22:43,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 03:22:43,919 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 03:22:43,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process