./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 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16511c6d-786a-4229-b8ad-cbeed97e8b7f/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16511c6d-786a-4229-b8ad-cbeed97e8b7f/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16511c6d-786a-4229-b8ad-cbeed97e8b7f/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16511c6d-786a-4229-b8ad-cbeed97e8b7f/bin/utaipan-7li7fVZpFI/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_16511c6d-786a-4229-b8ad-cbeed97e8b7f/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16511c6d-786a-4229-b8ad-cbeed97e8b7f/bin/utaipan-7li7fVZpFI --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 01:52:40,714 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:52:40,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:52:40,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:52:40,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:52:40,743 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:52:40,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:52:40,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:52:40,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:52:40,749 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:52:40,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:52:40,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:52:40,752 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:52:40,753 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:52:40,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:52:40,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:52:40,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:52:40,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:52:40,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:52:40,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:52:40,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:52:40,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:52:40,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:52:40,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:52:40,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:52:40,770 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:52:40,770 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:52:40,771 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:52:40,772 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:52:40,773 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:52:40,773 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:52:40,774 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:52:40,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:52:40,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:52:40,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:52:40,777 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:52:40,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:52:40,779 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:52:40,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:52:40,780 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:52:40,781 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:52:40,784 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16511c6d-786a-4229-b8ad-cbeed97e8b7f/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 01:52:40,813 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:52:40,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:52:40,821 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:52:40,821 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:52:40,822 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:52:40,822 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:52:40,822 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:52:40,823 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:52:40,823 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:52:40,823 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:52:40,824 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:52:40,824 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:52:40,824 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:52:40,825 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:52:40,825 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:52:40,825 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:52:40,825 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:52:40,826 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:52:40,826 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:52:40,827 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:52:40,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:52:40,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:52:40,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:52:40,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:52:40,828 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:52:40,828 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:52:40,828 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:52:40,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:52:40,828 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:52:40,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:52:40,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:52:40,829 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:52:40,830 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:52:40,830 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:52:40,830 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:52:40,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:52:40,830 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:52:40,831 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:52:40,832 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16511c6d-786a-4229-b8ad-cbeed97e8b7f/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16511c6d-786a-4229-b8ad-cbeed97e8b7f/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 618de5120235c3340e11b4958ef07a29ea7e443f67840fe760124caab804e862 [2022-11-03 01:52:41,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:52:41,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:52:41,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:52:41,089 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:52:41,089 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:52:41,091 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16511c6d-786a-4229-b8ad-cbeed97e8b7f/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i [2022-11-03 01:52:41,164 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16511c6d-786a-4229-b8ad-cbeed97e8b7f/bin/utaipan-7li7fVZpFI/data/6803e7f8b/550df7114a1245e384b7133842e3ec4e/FLAG28570f633 [2022-11-03 01:52:41,871 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:52:41,875 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16511c6d-786a-4229-b8ad-cbeed97e8b7f/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i [2022-11-03 01:52:41,925 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16511c6d-786a-4229-b8ad-cbeed97e8b7f/bin/utaipan-7li7fVZpFI/data/6803e7f8b/550df7114a1245e384b7133842e3ec4e/FLAG28570f633 [2022-11-03 01:52:42,001 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16511c6d-786a-4229-b8ad-cbeed97e8b7f/bin/utaipan-7li7fVZpFI/data/6803e7f8b/550df7114a1245e384b7133842e3ec4e [2022-11-03 01:52:42,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:52:42,008 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:52:42,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:52:42,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:52:42,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:52:42,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:52:42" (1/1) ... [2022-11-03 01:52:42,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@301b2c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:42, skipping insertion in model container [2022-11-03 01:52:42,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:52:42" (1/1) ... [2022-11-03 01:52:42,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:52:42,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:52:42,450 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_16511c6d-786a-4229-b8ad-cbeed97e8b7f/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4500,4513] [2022-11-03 01:52:42,456 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_16511c6d-786a-4229-b8ad-cbeed97e8b7f/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4560,4573] [2022-11-03 01:52:43,392 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:52:43,392 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:52:43,393 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:52:43,394 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:52:43,395 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:52:43,417 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:52:43,418 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:52:43,421 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:52:43,422 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:52:43,860 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-03 01:52:43,861 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-03 01:52:43,863 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-03 01:52:43,864 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-03 01:52:43,865 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-03 01:52:43,866 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-03 01:52:43,867 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-03 01:52:43,867 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-03 01:52:43,868 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-03 01:52:43,869 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-03 01:52:44,125 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-03 01:52:44,251 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:52:44,251 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:52:44,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:52:44,382 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:52:44,410 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_16511c6d-786a-4229-b8ad-cbeed97e8b7f/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4500,4513] [2022-11-03 01:52:44,411 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_16511c6d-786a-4229-b8ad-cbeed97e8b7f/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4560,4573] [2022-11-03 01:52:44,466 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:52:44,466 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:52:44,466 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:52:44,467 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:52:44,468 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:52:44,483 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:52:44,484 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:52:44,485 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:52:44,487 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:52:44,567 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-03 01:52:44,569 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-03 01:52:44,570 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-03 01:52:44,570 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-03 01:52:44,571 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-03 01:52:44,572 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-03 01:52:44,572 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-03 01:52:44,572 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-03 01:52:44,573 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-03 01:52:44,573 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-03 01:52:44,597 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-03 01:52:44,673 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:52:44,673 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:52:44,724 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:52:44,950 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:52:44,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:44 WrapperNode [2022-11-03 01:52:44,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:52:44,952 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:52:44,952 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:52:44,952 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:52:44,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:44" (1/1) ... [2022-11-03 01:52:45,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:44" (1/1) ... [2022-11-03 01:52:45,165 INFO L138 Inliner]: procedures = 690, calls = 2740, calls flagged for inlining = 59, calls inlined = 9, statements flattened = 831 [2022-11-03 01:52:45,165 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:52:45,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:52:45,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:52:45,166 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:52:45,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:44" (1/1) ... [2022-11-03 01:52:45,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:44" (1/1) ... [2022-11-03 01:52:45,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:44" (1/1) ... [2022-11-03 01:52:45,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:44" (1/1) ... [2022-11-03 01:52:45,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:44" (1/1) ... [2022-11-03 01:52:45,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:44" (1/1) ... [2022-11-03 01:52:45,308 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:44" (1/1) ... [2022-11-03 01:52:45,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:44" (1/1) ... [2022-11-03 01:52:45,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:52:45,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:52:45,325 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:52:45,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:52:45,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:44" (1/1) ... [2022-11-03 01:52:45,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:52:45,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16511c6d-786a-4229-b8ad-cbeed97e8b7f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:52:45,376 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16511c6d-786a-4229-b8ad-cbeed97e8b7f/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:52:45,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16511c6d-786a-4229-b8ad-cbeed97e8b7f/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:52:45,433 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2022-11-03 01:52:45,433 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2022-11-03 01:52:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:52:45,435 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-03 01:52:45,435 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-03 01:52:45,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2022-11-03 01:52:45,436 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-11-03 01:52:45,437 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-11-03 01:52:45,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 01:52:45,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 01:52:45,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:52:45,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 01:52:45,437 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 01:52:45,438 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-03 01:52:45,438 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-03 01:52:45,438 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-03 01:52:45,438 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-03 01:52:45,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:52:45,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:52:45,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 01:52:45,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:52:45,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:52:45,440 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-03 01:52:45,440 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-03 01:52:45,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 01:52:45,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 01:52:45,440 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-03 01:52:45,440 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-03 01:52:45,440 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 01:52:45,441 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 01:52:45,441 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-11-03 01:52:45,442 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-11-03 01:52:45,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:52:45,442 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-11-03 01:52:45,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-11-03 01:52:45,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 01:52:45,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 01:52:45,443 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_new_from_array [2022-11-03 01:52:45,443 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_new_from_array [2022-11-03 01:52:45,443 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-03 01:52:45,443 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-03 01:52:45,443 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-11-03 01:52:45,443 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-11-03 01:52:45,443 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-03 01:52:45,444 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-03 01:52:45,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:52:45,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2022-11-03 01:52:45,446 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_new_from_string [2022-11-03 01:52:45,446 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_new_from_string [2022-11-03 01:52:45,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:52:45,792 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:52:45,795 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:52:46,071 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !true; [2022-11-03 01:52:47,366 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:52:47,574 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:52:47,575 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-03 01:52:47,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:52:47 BoogieIcfgContainer [2022-11-03 01:52:47,579 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:52:47,582 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:52:47,583 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:52:47,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:52:47,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:52:42" (1/3) ... [2022-11-03 01:52:47,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c35ad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:52:47, skipping insertion in model container [2022-11-03 01:52:47,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:52:44" (2/3) ... [2022-11-03 01:52:47,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c35ad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:52:47, skipping insertion in model container [2022-11-03 01:52:47,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:52:47" (3/3) ... [2022-11-03 01:52:47,596 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_string_new_from_string_harness.i [2022-11-03 01:52:47,616 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:52:47,617 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:52:47,702 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:52:47,713 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@73eb229b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:52:47,714 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:52:47,718 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) [2022-11-03 01:52:47,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-03 01:52:47,735 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:47,736 INFO L195 NwaCegarLoop]: 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] [2022-11-03 01:52:47,737 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:52:47,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:47,745 INFO L85 PathProgramCache]: Analyzing trace with hash 832461079, now seen corresponding path program 1 times [2022-11-03 01:52:47,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:52:47,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631935823] [2022-11-03 01:52:47,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:47,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:52:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:49,608 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 01:52:49,609 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:52:49,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631935823] [2022-11-03 01:52:49,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631935823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:52:49,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:52:49,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:52:49,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735793361] [2022-11-03 01:52:49,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:52:49,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:52:49,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:52:49,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:52:49,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:52:49,660 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) [2022-11-03 01:52:50,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:50,088 INFO L93 Difference]: Finished difference Result 197 states and 275 transitions. [2022-11-03 01:52:50,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:52:50,091 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 [2022-11-03 01:52:50,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:50,104 INFO L225 Difference]: With dead ends: 197 [2022-11-03 01:52:50,104 INFO L226 Difference]: Without dead ends: 152 [2022-11-03 01:52:50,107 INFO L412 NwaCegarLoop]: 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 [2022-11-03 01:52:50,117 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 21 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:50,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 768 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:52:50,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-11-03 01:52:50,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 130. [2022-11-03 01:52:50,214 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) [2022-11-03 01:52:50,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 167 transitions. [2022-11-03 01:52:50,223 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 167 transitions. Word has length 60 [2022-11-03 01:52:50,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:50,224 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 167 transitions. [2022-11-03 01:52:50,225 INFO L496 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) [2022-11-03 01:52:50,225 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 167 transitions. [2022-11-03 01:52:50,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-03 01:52:50,228 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:50,228 INFO L195 NwaCegarLoop]: 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] [2022-11-03 01:52:50,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:52:50,229 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:52:50,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:50,229 INFO L85 PathProgramCache]: Analyzing trace with hash -557245047, now seen corresponding path program 1 times [2022-11-03 01:52:50,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:52:50,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606413792] [2022-11-03 01:52:50,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:50,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:52:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:50,834 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 01:52:50,834 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:52:50,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606413792] [2022-11-03 01:52:50,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606413792] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:52:50,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:52:50,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:52:50,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304561036] [2022-11-03 01:52:50,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:52:50,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:52:50,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:52:50,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:52:50,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:52:50,840 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) [2022-11-03 01:52:51,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:51,036 INFO L93 Difference]: Finished difference Result 174 states and 222 transitions. [2022-11-03 01:52:51,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:52:51,038 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 [2022-11-03 01:52:51,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:51,040 INFO L225 Difference]: With dead ends: 174 [2022-11-03 01:52:51,040 INFO L226 Difference]: Without dead ends: 134 [2022-11-03 01:52:51,041 INFO L412 NwaCegarLoop]: 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 [2022-11-03 01:52:51,042 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 1 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:51,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 551 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:52:51,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-03 01:52:51,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2022-11-03 01:52:51,055 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) [2022-11-03 01:52:51,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 171 transitions. [2022-11-03 01:52:51,058 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 171 transitions. Word has length 68 [2022-11-03 01:52:51,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:51,058 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 171 transitions. [2022-11-03 01:52:51,058 INFO L496 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) [2022-11-03 01:52:51,059 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 171 transitions. [2022-11-03 01:52:51,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-03 01:52:51,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:51,061 INFO L195 NwaCegarLoop]: 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] [2022-11-03 01:52:51,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:52:51,062 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:52:51,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:51,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1539866196, now seen corresponding path program 1 times [2022-11-03 01:52:51,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:52:51,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862854256] [2022-11-03 01:52:51,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:51,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:52:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:51,788 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 01:52:51,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:52:51,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862854256] [2022-11-03 01:52:51,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862854256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:52:51,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:52:51,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 01:52:51,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61727776] [2022-11-03 01:52:51,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:52:51,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 01:52:51,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:52:51,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 01:52:51,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:52:51,793 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) [2022-11-03 01:52:52,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:52,354 INFO L93 Difference]: Finished difference Result 190 states and 247 transitions. [2022-11-03 01:52:52,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:52:52,355 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 [2022-11-03 01:52:52,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:52,357 INFO L225 Difference]: With dead ends: 190 [2022-11-03 01:52:52,357 INFO L226 Difference]: Without dead ends: 154 [2022-11-03 01:52:52,358 INFO L412 NwaCegarLoop]: 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 [2022-11-03 01:52:52,358 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 174 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:52,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 861 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:52:52,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-11-03 01:52:52,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 130. [2022-11-03 01:52:52,374 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) [2022-11-03 01:52:52,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 165 transitions. [2022-11-03 01:52:52,375 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 165 transitions. Word has length 68 [2022-11-03 01:52:52,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:52,376 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 165 transitions. [2022-11-03 01:52:52,376 INFO L496 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) [2022-11-03 01:52:52,376 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 165 transitions. [2022-11-03 01:52:52,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-03 01:52:52,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:52,378 INFO L195 NwaCegarLoop]: 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] [2022-11-03 01:52:52,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:52:52,378 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:52:52,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:52,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1616400264, now seen corresponding path program 1 times [2022-11-03 01:52:52,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:52:52,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243547624] [2022-11-03 01:52:52,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:52,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:52:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:53,115 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 01:52:53,116 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:52:53,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243547624] [2022-11-03 01:52:53,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243547624] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:52:53,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:52:53,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:52:53,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548062523] [2022-11-03 01:52:53,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:52:53,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:52:53,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:52:53,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:52:53,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:52:53,119 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) [2022-11-03 01:52:53,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:53,316 INFO L93 Difference]: Finished difference Result 170 states and 214 transitions. [2022-11-03 01:52:53,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:52:53,317 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 [2022-11-03 01:52:53,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:53,319 INFO L225 Difference]: With dead ends: 170 [2022-11-03 01:52:53,319 INFO L226 Difference]: Without dead ends: 138 [2022-11-03 01:52:53,320 INFO L412 NwaCegarLoop]: 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 [2022-11-03 01:52:53,321 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 1 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:53,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 829 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:52:53,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-11-03 01:52:53,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2022-11-03 01:52:53,335 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) [2022-11-03 01:52:53,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 171 transitions. [2022-11-03 01:52:53,336 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 171 transitions. Word has length 68 [2022-11-03 01:52:53,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:53,337 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 171 transitions. [2022-11-03 01:52:53,337 INFO L496 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) [2022-11-03 01:52:53,337 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 171 transitions. [2022-11-03 01:52:53,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-03 01:52:53,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:53,339 INFO L195 NwaCegarLoop]: 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] [2022-11-03 01:52:53,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 01:52:53,340 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:52:53,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:53,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1793464088, now seen corresponding path program 1 times [2022-11-03 01:52:53,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:52:53,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22346730] [2022-11-03 01:52:53,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:53,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:52:53,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:56,562 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 01:52:56,564 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:52:56,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22346730] [2022-11-03 01:52:56,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22346730] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:52:56,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964764664] [2022-11-03 01:52:56,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:56,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:52:56,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16511c6d-786a-4229-b8ad-cbeed97e8b7f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:52:56,571 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16511c6d-786a-4229-b8ad-cbeed97e8b7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:52:56,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16511c6d-786a-4229-b8ad-cbeed97e8b7f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:52:57,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:57,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 2660 conjuncts, 100 conjunts are in the unsatisfiable core [2022-11-03 01:52:57,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:52:57,363 INFO L390 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 [2022-11-03 01:53:01,186 INFO L356 Elim1Store]: treesize reduction 168, result has 24.0 percent of original size [2022-11-03 01:53:01,186 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 21 case distinctions, treesize of input 187 treesize of output 171 [2022-11-03 01:53:01,433 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 01:53:01,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:54:14,207 WARN L234 SmtUtils]: Spent 58.21s on a formula simplification. DAG size of input: 152 DAG size of output: 102 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:54:16,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964764664] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:54:16,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1383600948] [2022-11-03 01:54:16,031 INFO L159 IcfgInterpreter]: Started Sifa with 62 locations of interest [2022-11-03 01:54:16,031 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:54:16,035 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:54:16,040 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:54:16,041 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:55:16,521 INFO L390 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 8 treesize of output 7 [2022-11-03 01:55:16,527 INFO L390 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 [2022-11-03 01:55:47,993 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_uint64_t with input of size 3239 for LOIs [2022-11-03 01:55:51,658 INFO L197 IcfgInterpreter]: Interpreting procedure bounded_malloc with input of size 3264 for LOIs [2022-11-03 01:56:33,817 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3310 for LOIs [2022-11-03 01:57:05,928 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:58:18,011 WARN L234 SmtUtils]: Spent 1.14m 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) [2022-11-03 01:59:28,856 WARN L234 SmtUtils]: Spent 1.13m 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)