./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8323600f-485c-4f81-ab2c-90643bd5f2d3/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8323600f-485c-4f81-ab2c-90643bd5f2d3/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8323600f-485c-4f81-ab2c-90643bd5f2d3/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8323600f-485c-4f81-ab2c-90643bd5f2d3/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8323600f-485c-4f81-ab2c-90643bd5f2d3/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8323600f-485c-4f81-ab2c-90643bd5f2d3/bin/utaipan-eEHZpOm5b7 --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 618de5120235c3340e11b4958ef07a29ea7e443f67840fe760124caab804e862 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:14:40,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:14:40,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:14:40,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:14:40,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:14:40,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:14:40,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:14:40,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:14:40,697 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:14:40,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:14:40,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:14:40,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:14:40,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:14:40,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:14:40,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:14:40,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:14:40,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:14:40,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:14:40,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:14:40,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:14:40,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:14:40,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:14:40,725 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:14:40,726 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:14:40,732 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:14:40,732 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:14:40,733 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:14:40,735 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:14:40,735 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:14:40,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:14:40,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:14:40,739 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:14:40,740 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:14:40,742 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:14:40,743 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:14:40,744 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:14:40,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:14:40,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:14:40,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:14:40,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:14:40,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:14:40,755 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8323600f-485c-4f81-ab2c-90643bd5f2d3/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 18:14:40,824 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:14:40,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:14:40,833 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:14:40,834 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:14:40,835 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:14:40,835 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:14:40,835 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:14:40,835 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:14:40,836 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:14:40,837 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:14:40,838 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:14:40,838 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:14:40,839 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:14:40,839 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:14:40,839 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:14:40,840 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:14:40,840 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:14:40,840 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:14:40,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:14:40,842 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:14:40,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:14:40,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:14:40,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:14:40,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:14:40,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:14:40,843 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:14:40,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:14:40,847 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:14:40,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:14:40,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:14:40,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:14:40,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:14:40,849 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:14:40,849 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:14:40,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:14:40,850 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:14:40,850 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:14:40,850 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:14:40,851 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8323600f-485c-4f81-ab2c-90643bd5f2d3/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8323600f-485c-4f81-ab2c-90643bd5f2d3/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 618de5120235c3340e11b4958ef07a29ea7e443f67840fe760124caab804e862 [2021-11-25 18:14:41,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:14:41,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:14:41,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:14:41,191 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:14:41,192 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:14:41,193 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8323600f-485c-4f81-ab2c-90643bd5f2d3/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i [2021-11-25 18:14:41,301 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8323600f-485c-4f81-ab2c-90643bd5f2d3/bin/utaipan-eEHZpOm5b7/data/9d8225386/c54b75cfa3214051ad7e848bffe98b05/FLAG675f0b056 [2021-11-25 18:14:42,331 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:14:42,332 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8323600f-485c-4f81-ab2c-90643bd5f2d3/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i [2021-11-25 18:14:42,392 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8323600f-485c-4f81-ab2c-90643bd5f2d3/bin/utaipan-eEHZpOm5b7/data/9d8225386/c54b75cfa3214051ad7e848bffe98b05/FLAG675f0b056 [2021-11-25 18:14:42,706 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8323600f-485c-4f81-ab2c-90643bd5f2d3/bin/utaipan-eEHZpOm5b7/data/9d8225386/c54b75cfa3214051ad7e848bffe98b05 [2021-11-25 18:14:42,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:14:42,711 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:14:42,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:14:42,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:14:42,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:14:42,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:14:42" (1/1) ... [2021-11-25 18:14:42,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43d61a5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:42, skipping insertion in model container [2021-11-25 18:14:42,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:14:42" (1/1) ... [2021-11-25 18:14:42,732 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:14:42,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:14:43,252 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8323600f-485c-4f81-ab2c-90643bd5f2d3/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4500,4513] [2021-11-25 18:14:43,261 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8323600f-485c-4f81-ab2c-90643bd5f2d3/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4560,4573] [2021-11-25 18:14:44,618 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:14:44,619 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:14:44,620 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:14:44,621 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:14:44,623 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:14:44,642 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:14:44,643 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:14:44,655 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:14:44,656 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:14:45,216 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 18:14:45,218 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 18:14:45,219 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 18:14:45,221 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 18:14:45,223 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 18:14:45,224 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 18:14:45,225 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 18:14:45,226 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 18:14:45,227 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 18:14:45,227 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 18:14:45,498 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 18:14:45,774 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:14:45,777 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:14:45,929 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:14:45,995 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:14:46,012 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8323600f-485c-4f81-ab2c-90643bd5f2d3/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4500,4513] [2021-11-25 18:14:46,013 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8323600f-485c-4f81-ab2c-90643bd5f2d3/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4560,4573] [2021-11-25 18:14:46,071 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:14:46,072 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:14:46,072 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:14:46,073 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:14:46,074 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:14:46,081 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:14:46,086 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:14:46,087 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:14:46,088 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:14:46,149 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 18:14:46,151 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 18:14:46,152 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 18:14:46,153 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 18:14:46,154 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 18:14:46,155 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 18:14:46,155 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 18:14:46,156 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 18:14:46,157 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 18:14:46,157 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 18:14:46,186 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 18:14:46,359 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:14:46,362 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:14:46,434 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:14:46,813 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:14:46,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:46 WrapperNode [2021-11-25 18:14:46,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:14:46,817 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:14:46,817 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:14:46,818 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:14:46,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:46" (1/1) ... [2021-11-25 18:14:47,007 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:46" (1/1) ... [2021-11-25 18:14:47,176 INFO L137 Inliner]: procedures = 690, calls = 2740, calls flagged for inlining = 59, calls inlined = 9, statements flattened = 831 [2021-11-25 18:14:47,177 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:14:47,193 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:14:47,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:14:47,194 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:14:47,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:46" (1/1) ... [2021-11-25 18:14:47,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:46" (1/1) ... [2021-11-25 18:14:47,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:46" (1/1) ... [2021-11-25 18:14:47,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:46" (1/1) ... [2021-11-25 18:14:47,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:46" (1/1) ... [2021-11-25 18:14:47,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:46" (1/1) ... [2021-11-25 18:14:47,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:46" (1/1) ... [2021-11-25 18:14:47,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:14:47,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:14:47,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:14:47,341 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:14:47,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:46" (1/1) ... [2021-11-25 18:14:47,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:14:47,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8323600f-485c-4f81-ab2c-90643bd5f2d3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:14:47,382 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8323600f-485c-4f81-ab2c-90643bd5f2d3/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:14:47,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8323600f-485c-4f81-ab2c-90643bd5f2d3/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:14:47,438 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2021-11-25 18:14:47,438 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2021-11-25 18:14:47,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:14:47,439 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-25 18:14:47,439 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-25 18:14:47,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2021-11-25 18:14:47,439 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-11-25 18:14:47,439 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-11-25 18:14:47,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 18:14:47,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 18:14:47,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:14:47,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 18:14:47,440 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 18:14:47,441 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-25 18:14:47,441 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-25 18:14:47,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 18:14:47,441 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 18:14:47,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:14:47,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:14:47,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:14:47,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:14:47,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:14:47,443 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-25 18:14:47,443 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-25 18:14:47,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 18:14:47,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 18:14:47,443 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-25 18:14:47,444 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-25 18:14:47,444 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 18:14:47,444 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 18:14:47,444 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2021-11-25 18:14:47,444 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2021-11-25 18:14:47,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:14:47,445 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-25 18:14:47,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-25 18:14:47,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:14:47,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:14:47,446 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_new_from_array [2021-11-25 18:14:47,446 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_new_from_array [2021-11-25 18:14:47,446 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-25 18:14:47,446 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-25 18:14:47,447 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-25 18:14:47,447 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-25 18:14:47,447 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-25 18:14:47,447 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-25 18:14:47,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:14:47,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2021-11-25 18:14:47,448 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_new_from_string [2021-11-25 18:14:47,448 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_new_from_string [2021-11-25 18:14:47,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:14:47,858 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:14:47,863 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:14:48,164 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !true; [2021-11-25 18:14:49,603 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:14:49,773 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:14:49,773 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-25 18:14:49,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:14:49 BoogieIcfgContainer [2021-11-25 18:14:49,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:14:49,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:14:49,780 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:14:49,784 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:14:49,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:14:42" (1/3) ... [2021-11-25 18:14:49,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c1832f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:14:49, skipping insertion in model container [2021-11-25 18:14:49,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:14:46" (2/3) ... [2021-11-25 18:14:49,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c1832f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:14:49, skipping insertion in model container [2021-11-25 18:14:49,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:14:49" (3/3) ... [2021-11-25 18:14:49,793 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_string_new_from_string_harness.i [2021-11-25 18:14:49,806 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:14:49,807 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:14:49,884 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:14:49,909 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:14:49,914 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:14:49,940 INFO L276 IsEmpty]: Start isEmpty. Operand has 125 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 69 states have internal predecessors, (83), 39 states have call successors, (39), 16 states have call predecessors, (39), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-11-25 18:14:49,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-25 18:14:49,953 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:14:49,961 INFO L514 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:14:49,962 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:14:49,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:14:49,970 INFO L85 PathProgramCache]: Analyzing trace with hash 832461079, now seen corresponding path program 1 times [2021-11-25 18:14:49,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:14:49,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980719302] [2021-11-25 18:14:49,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:14:49,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:14:50,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:14:51,052 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-25 18:14:51,053 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:14:51,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980719302] [2021-11-25 18:14:51,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980719302] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:14:51,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:14:51,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:14:51,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469227419] [2021-11-25 18:14:51,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:14:51,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 18:14:51,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:14:51,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 18:14:51,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:14:51,129 INFO L87 Difference]: Start difference. First operand has 125 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 69 states have internal predecessors, (83), 39 states have call successors, (39), 16 states have call predecessors, (39), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-25 18:14:51,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:14:51,626 INFO L93 Difference]: Finished difference Result 197 states and 275 transitions. [2021-11-25 18:14:51,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:14:51,630 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 60 [2021-11-25 18:14:51,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:14:51,645 INFO L225 Difference]: With dead ends: 197 [2021-11-25 18:14:51,645 INFO L226 Difference]: Without dead ends: 152 [2021-11-25 18:14:51,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:14:51,655 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 21 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:14:51,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 777 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 18:14:51,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-25 18:14:51,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 130. [2021-11-25 18:14:51,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 70 states have (on average 1.1857142857142857) internal successors, (83), 73 states have internal predecessors, (83), 42 states have call successors, (42), 16 states have call predecessors, (42), 17 states have return successors, (42), 40 states have call predecessors, (42), 41 states have call successors, (42) [2021-11-25 18:14:51,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 167 transitions. [2021-11-25 18:14:51,732 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 167 transitions. Word has length 60 [2021-11-25 18:14:51,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:14:51,734 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 167 transitions. [2021-11-25 18:14:51,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-25 18:14:51,735 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 167 transitions. [2021-11-25 18:14:51,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-25 18:14:51,740 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:14:51,741 INFO L514 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:14:51,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:14:51,741 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:14:51,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:14:51,743 INFO L85 PathProgramCache]: Analyzing trace with hash -557245047, now seen corresponding path program 1 times [2021-11-25 18:14:51,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:14:51,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837893988] [2021-11-25 18:14:51,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:14:51,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:14:51,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:14:52,176 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-25 18:14:52,176 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:14:52,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837893988] [2021-11-25 18:14:52,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837893988] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:14:52,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:14:52,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:14:52,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610504128] [2021-11-25 18:14:52,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:14:52,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:14:52,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:14:52,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:14:52,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:14:52,182 INFO L87 Difference]: Start difference. First operand 130 states and 167 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2021-11-25 18:14:52,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:14:52,366 INFO L93 Difference]: Finished difference Result 174 states and 222 transitions. [2021-11-25 18:14:52,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:14:52,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) Word has length 68 [2021-11-25 18:14:52,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:14:52,371 INFO L225 Difference]: With dead ends: 174 [2021-11-25 18:14:52,371 INFO L226 Difference]: Without dead ends: 134 [2021-11-25 18:14:52,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:14:52,374 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 1 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:14:52,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 552 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:14:52,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-25 18:14:52,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-11-25 18:14:52,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 73 states have (on average 1.178082191780822) internal successors, (86), 76 states have internal predecessors, (86), 42 states have call successors, (42), 16 states have call predecessors, (42), 18 states have return successors, (43), 41 states have call predecessors, (43), 41 states have call successors, (43) [2021-11-25 18:14:52,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 171 transitions. [2021-11-25 18:14:52,401 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 171 transitions. Word has length 68 [2021-11-25 18:14:52,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:14:52,402 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 171 transitions. [2021-11-25 18:14:52,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2021-11-25 18:14:52,403 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 171 transitions. [2021-11-25 18:14:52,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-25 18:14:52,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:14:52,407 INFO L514 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:14:52,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:14:52,408 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:14:52,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:14:52,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1539866196, now seen corresponding path program 1 times [2021-11-25 18:14:52,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:14:52,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406119877] [2021-11-25 18:14:52,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:14:52,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:14:52,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:14:52,769 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-25 18:14:52,769 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:14:52,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406119877] [2021-11-25 18:14:52,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406119877] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:14:52,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:14:52,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 18:14:52,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541717899] [2021-11-25 18:14:52,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:14:52,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 18:14:52,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:14:52,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 18:14:52,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-25 18:14:52,778 INFO L87 Difference]: Start difference. First operand 134 states and 171 transitions. Second operand has 9 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-25 18:14:53,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:14:53,396 INFO L93 Difference]: Finished difference Result 190 states and 247 transitions. [2021-11-25 18:14:53,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 18:14:53,397 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 68 [2021-11-25 18:14:53,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:14:53,400 INFO L225 Difference]: With dead ends: 190 [2021-11-25 18:14:53,400 INFO L226 Difference]: Without dead ends: 154 [2021-11-25 18:14:53,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-11-25 18:14:53,403 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 174 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:14:53,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 871 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 18:14:53,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-11-25 18:14:53,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 130. [2021-11-25 18:14:53,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 71 states have (on average 1.1830985915492958) internal successors, (84), 73 states have internal predecessors, (84), 41 states have call successors, (41), 16 states have call predecessors, (41), 17 states have return successors, (40), 40 states have call predecessors, (40), 39 states have call successors, (40) [2021-11-25 18:14:53,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 165 transitions. [2021-11-25 18:14:53,455 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 165 transitions. Word has length 68 [2021-11-25 18:14:53,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:14:53,456 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 165 transitions. [2021-11-25 18:14:53,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-25 18:14:53,460 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 165 transitions. [2021-11-25 18:14:53,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-25 18:14:53,473 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:14:53,473 INFO L514 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:14:53,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:14:53,474 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:14:53,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:14:53,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1616400264, now seen corresponding path program 1 times [2021-11-25 18:14:53,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:14:53,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993398546] [2021-11-25 18:14:53,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:14:53,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:14:53,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:14:53,902 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-25 18:14:53,902 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:14:53,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993398546] [2021-11-25 18:14:53,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993398546] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:14:53,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:14:53,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:14:53,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204358242] [2021-11-25 18:14:53,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:14:53,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 18:14:53,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:14:53,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 18:14:53,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:14:53,908 INFO L87 Difference]: Start difference. First operand 130 states and 165 transitions. Second operand has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2021-11-25 18:14:54,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:14:54,115 INFO L93 Difference]: Finished difference Result 170 states and 214 transitions. [2021-11-25 18:14:54,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:14:54,116 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) Word has length 68 [2021-11-25 18:14:54,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:14:54,119 INFO L225 Difference]: With dead ends: 170 [2021-11-25 18:14:54,120 INFO L226 Difference]: Without dead ends: 138 [2021-11-25 18:14:54,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:14:54,122 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 1 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:14:54,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 832 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:14:54,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-25 18:14:54,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2021-11-25 18:14:54,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 75 states have (on average 1.1733333333333333) internal successors, (88), 77 states have internal predecessors, (88), 41 states have call successors, (41), 16 states have call predecessors, (41), 19 states have return successors, (42), 42 states have call predecessors, (42), 39 states have call successors, (42) [2021-11-25 18:14:54,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 171 transitions. [2021-11-25 18:14:54,141 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 171 transitions. Word has length 68 [2021-11-25 18:14:54,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:14:54,141 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 171 transitions. [2021-11-25 18:14:54,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2021-11-25 18:14:54,142 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 171 transitions. [2021-11-25 18:14:54,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-25 18:14:54,144 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:14:54,144 INFO L514 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:14:54,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:14:54,145 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:14:54,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:14:54,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1793464088, now seen corresponding path program 1 times [2021-11-25 18:14:54,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:14:54,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82037602] [2021-11-25 18:14:54,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:14:54,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:14:54,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:14:54,733 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 18:14:54,733 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:14:54,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82037602] [2021-11-25 18:14:54,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82037602] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:14:54,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670125192] [2021-11-25 18:14:54,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:14:54,735 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:14:54,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8323600f-485c-4f81-ab2c-90643bd5f2d3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:14:54,737 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8323600f-485c-4f81-ab2c-90643bd5f2d3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:14:54,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8323600f-485c-4f81-ab2c-90643bd5f2d3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:14:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:14:55,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 2660 conjuncts, 94 conjunts are in the unsatisfiable core [2021-11-25 18:14:55,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:14:55,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:15:00,760 INFO L354 Elim1Store]: treesize reduction 120, result has 21.6 percent of original size [2021-11-25 18:15:00,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 176 treesize of output 140 [2021-11-25 18:15:01,478 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-25 18:15:01,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:15:40,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670125192] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:15:40,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1794089860] [2021-11-25 18:15:40,996 INFO L159 IcfgInterpreter]: Started Sifa with 62 locations of interest [2021-11-25 18:15:40,997 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:15:41,004 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:15:41,011 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:15:41,012 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:16:41,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:16:41,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:17:09,266 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_uint64_t with input of size 3239 for LOIs [2021-11-25 18:17:12,551 INFO L197 IcfgInterpreter]: Interpreting procedure bounded_malloc with input of size 3264 for LOIs [2021-11-25 18:17:49,033 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3310 for LOIs [2021-11-25 18:18:13,623 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:19:25,156 WARN L227 SmtUtils]: Spent 1.12m on a formula simplification that was a NOOP. DAG size: 3244 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:20:36,136 WARN L227 SmtUtils]: Spent 1.11m on a formula simplification that was a NOOP. DAG size: 3239 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)