./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF --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 66fb9bfec5c458b51d86deb6748dd65f162e7ac6a772af5f3fec59d101a18d8d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:15:40,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:15:40,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:15:40,612 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:15:40,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:15:40,614 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:15:40,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:15:40,618 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:15:40,620 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:15:40,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:15:40,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:15:40,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:15:40,624 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:15:40,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:15:40,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:15:40,628 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:15:40,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:15:40,630 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:15:40,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:15:40,635 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:15:40,636 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:15:40,638 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:15:40,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:15:40,640 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:15:40,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:15:40,644 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:15:40,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:15:40,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:15:40,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:15:40,647 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:15:40,648 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:15:40,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:15:40,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:15:40,650 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:15:40,651 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:15:40,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:15:40,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:15:40,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:15:40,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:15:40,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:15:40,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:15:40,656 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 22:15:40,682 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:15:40,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:15:40,683 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:15:40,683 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:15:40,684 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:15:40,684 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:15:40,684 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:15:40,684 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:15:40,685 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:15:40,685 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:15:40,685 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:15:40,685 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:15:40,686 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:15:40,686 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:15:40,686 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:15:40,686 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:15:40,687 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:15:40,687 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:15:40,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:15:40,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:15:40,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:15:40,688 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:15:40,688 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:15:40,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:15:40,688 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:15:40,689 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:15:40,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:15:40,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:15:40,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:15:40,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:15:40,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:15:40,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:15:40,690 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:15:40,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:15:40,690 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:15:40,691 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:15:40,691 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:15:40,691 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_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66fb9bfec5c458b51d86deb6748dd65f162e7ac6a772af5f3fec59d101a18d8d [2021-11-12 22:15:40,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:15:40,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:15:40,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:15:40,990 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:15:40,990 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:15:40,992 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i [2021-11-12 22:15:41,059 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/data/d5315a454/011f9dfe6eb24c50856d85c2e23ce25b/FLAG1d1e61935 [2021-11-12 22:15:42,101 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:15:42,102 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i [2021-11-12 22:15:42,148 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/data/d5315a454/011f9dfe6eb24c50856d85c2e23ce25b/FLAG1d1e61935 [2021-11-12 22:15:42,506 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/data/d5315a454/011f9dfe6eb24c50856d85c2e23ce25b [2021-11-12 22:15:42,509 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:15:42,513 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:15:42,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:15:42,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:15:42,518 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:15:42,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:15:42" (1/1) ... [2021-11-12 22:15:42,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d0e6c70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:15:42, skipping insertion in model container [2021-11-12 22:15:42,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:15:42" (1/1) ... [2021-11-12 22:15:42,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:15:42,627 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:15:42,964 WARN L228 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_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i[4492,4505] [2021-11-12 22:15:42,972 WARN L228 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_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i[4552,4565] [2021-11-12 22:15:42,996 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:15:43,001 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:15:43,952 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:43,952 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:43,953 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:43,954 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:43,955 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:43,967 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:43,968 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:43,970 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:43,971 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:44,439 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:15:44,440 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:15:44,443 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:15:44,445 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:15:44,454 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:15:44,455 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:15:44,456 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:15:44,458 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:15:44,460 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:15:44,462 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:15:44,679 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:15:44,783 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:44,783 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:44,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:15:44,988 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 22:15:44,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1918f941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:15:44, skipping insertion in model container [2021-11-12 22:15:44,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:15:44,992 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 22:15:44,994 INFO L158 Benchmark]: Toolchain (without parser) took 2479.48ms. Allocated memory was 102.8MB in the beginning and 155.2MB in the end (delta: 52.4MB). Free memory was 74.9MB in the beginning and 98.2MB in the end (delta: -23.3MB). Peak memory consumption was 37.6MB. Max. memory is 16.1GB. [2021-11-12 22:15:44,995 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 102.8MB. Free memory is still 79.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:15:44,996 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2476.77ms. Allocated memory was 102.8MB in the beginning and 155.2MB in the end (delta: 52.4MB). Free memory was 74.9MB in the beginning and 98.2MB in the end (delta: -23.3MB). Peak memory consumption was 37.6MB. Max. memory is 16.1GB. [2021-11-12 22:15:45,000 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 102.8MB. Free memory is still 79.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2476.77ms. Allocated memory was 102.8MB in the beginning and 155.2MB in the end (delta: 52.4MB). Free memory was 74.9MB in the beginning and 98.2MB in the end (delta: -23.3MB). Peak memory consumption was 37.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6990]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF --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 66fb9bfec5c458b51d86deb6748dd65f162e7ac6a772af5f3fec59d101a18d8d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:15:47,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:15:47,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:15:47,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:15:47,314 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:15:47,316 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:15:47,317 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:15:47,320 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:15:47,322 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:15:47,323 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:15:47,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:15:47,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:15:47,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:15:47,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:15:47,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:15:47,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:15:47,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:15:47,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:15:47,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:15:47,339 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:15:47,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:15:47,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:15:47,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:15:47,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:15:47,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:15:47,351 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:15:47,351 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:15:47,352 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:15:47,353 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:15:47,354 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:15:47,355 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:15:47,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:15:47,357 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:15:47,358 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:15:47,359 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:15:47,359 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:15:47,360 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:15:47,361 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:15:47,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:15:47,362 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:15:47,363 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:15:47,364 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 22:15:47,394 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:15:47,398 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:15:47,400 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:15:47,400 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:15:47,400 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:15:47,400 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:15:47,401 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:15:47,401 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:15:47,401 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:15:47,401 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:15:47,404 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:15:47,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:15:47,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:15:47,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:15:47,405 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:15:47,405 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:15:47,405 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:15:47,405 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:15:47,406 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:15:47,406 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:15:47,406 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:15:47,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:15:47,406 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:15:47,407 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:15:47,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:15:47,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:15:47,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:15:47,408 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:15:47,408 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:15:47,408 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:15:47,408 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:15:47,409 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:15:47,409 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:15:47,409 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66fb9bfec5c458b51d86deb6748dd65f162e7ac6a772af5f3fec59d101a18d8d [2021-11-12 22:15:47,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:15:47,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:15:47,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:15:47,809 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:15:47,810 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:15:47,812 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i [2021-11-12 22:15:47,894 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/data/07342b55d/c2030adec9cc4945a6fc5531a99e65aa/FLAGf24e57d60 [2021-11-12 22:15:48,913 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:15:48,914 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i [2021-11-12 22:15:48,959 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/data/07342b55d/c2030adec9cc4945a6fc5531a99e65aa/FLAGf24e57d60 [2021-11-12 22:15:49,317 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/data/07342b55d/c2030adec9cc4945a6fc5531a99e65aa [2021-11-12 22:15:49,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:15:49,320 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:15:49,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:15:49,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:15:49,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:15:49,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:15:49" (1/1) ... [2021-11-12 22:15:49,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cc088f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:15:49, skipping insertion in model container [2021-11-12 22:15:49,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:15:49" (1/1) ... [2021-11-12 22:15:49,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:15:49,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:15:49,811 WARN L228 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_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i[4492,4505] [2021-11-12 22:15:49,818 WARN L228 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_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i[4552,4565] [2021-11-12 22:15:49,844 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:15:49,850 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:15:51,278 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:51,279 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:51,280 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:51,281 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:51,282 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:51,296 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:51,297 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:51,299 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:51,300 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:51,777 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:15:51,779 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:15:51,780 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:15:51,781 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:15:51,783 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:15:51,784 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:15:51,785 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:15:51,785 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:15:51,786 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:15:51,787 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:15:51,978 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:15:52,079 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:52,080 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:52,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:15:52,258 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 22:15:52,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:15:52,344 WARN L228 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_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i[4492,4505] [2021-11-12 22:15:52,345 WARN L228 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_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i[4552,4565] [2021-11-12 22:15:52,346 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:15:52,347 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:15:52,379 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:52,380 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:52,380 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:52,381 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:52,381 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:52,396 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:52,396 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:52,397 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:52,398 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:52,462 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:15:52,462 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:15:52,463 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:15:52,464 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:15:52,466 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:15:52,467 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:15:52,469 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:15:52,473 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:15:52,473 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:15:52,474 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:15:52,501 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:15:52,602 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:52,603 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:52,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:15:52,764 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:15:52,789 WARN L228 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_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i[4492,4505] [2021-11-12 22:15:52,790 WARN L228 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_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i[4552,4565] [2021-11-12 22:15:52,791 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:15:52,792 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:15:52,844 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:52,844 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:52,845 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:52,845 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:52,845 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:52,851 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:52,852 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:52,852 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:52,853 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:52,885 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:15:52,886 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:15:52,886 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:15:52,887 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:15:52,888 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:15:52,888 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:15:52,889 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:15:52,889 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:15:52,890 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:15:52,890 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:15:52,908 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:15:52,960 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:52,960 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:15:52,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:15:53,391 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:15:53,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:15:53 WrapperNode [2021-11-12 22:15:53,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:15:53,393 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:15:53,394 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:15:53,394 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:15:53,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:15:53" (1/1) ... [2021-11-12 22:15:53,550 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:15:53" (1/1) ... [2021-11-12 22:15:53,696 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:15:53,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:15:53,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:15:53,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:15:53,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:15:53" (1/1) ... [2021-11-12 22:15:53,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:15:53" (1/1) ... [2021-11-12 22:15:53,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:15:53" (1/1) ... [2021-11-12 22:15:53,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:15:53" (1/1) ... [2021-11-12 22:15:53,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:15:53" (1/1) ... [2021-11-12 22:15:53,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:15:53" (1/1) ... [2021-11-12 22:15:53,833 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:15:53" (1/1) ... [2021-11-12 22:15:53,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:15:53,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:15:53,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:15:53,858 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:15:53,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:15:53" (1/1) ... [2021-11-12 22:15:53,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:15:53,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:15:53,895 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:15:53,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:15:53,946 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2021-11-12 22:15:53,946 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2021-11-12 22:15:53,946 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_compare [2021-11-12 22:15:53,946 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_compare [2021-11-12 22:15:53,946 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2021-11-12 22:15:53,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2021-11-12 22:15:53,947 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-12 22:15:53,947 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-12 22:15:53,948 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-12 22:15:53,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:15:53,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 22:15:53,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 22:15:53,949 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 22:15:53,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 22:15:53,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 22:15:53,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:15:53,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:15:53,950 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-12 22:15:53,950 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-12 22:15:53,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 22:15:53,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 22:15:53,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-12 22:15:53,951 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_bytes [2021-11-12 22:15:53,951 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_bytes [2021-11-12 22:15:53,951 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 22:15:53,951 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 22:15:53,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:15:53,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 22:15:53,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 22:15:53,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 22:15:53,952 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-12 22:15:53,952 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-12 22:15:53,952 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-12 22:15:53,953 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-12 22:16:07,924 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:16:07,924 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 22:16:07,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:16:07 BoogieIcfgContainer [2021-11-12 22:16:07,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:16:07,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:16:07,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:16:07,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:16:07,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:15:49" (1/3) ... [2021-11-12 22:16:07,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1815171d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:16:07, skipping insertion in model container [2021-11-12 22:16:07,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:15:53" (2/3) ... [2021-11-12 22:16:07,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1815171d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:16:07, skipping insertion in model container [2021-11-12 22:16:07,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:16:07" (3/3) ... [2021-11-12 22:16:07,945 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_string_compare_harness.i [2021-11-12 22:16:07,951 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:16:07,957 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:16:08,027 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:16:08,038 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 [2021-11-12 22:16:08,038 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:16:08,061 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 79 states have (on average 1.3037974683544304) internal successors, (103), 80 states have internal predecessors, (103), 33 states have call successors, (33), 10 states have call predecessors, (33), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-12 22:16:08,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-12 22:16:08,074 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:16:08,075 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:16:08,076 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:16:08,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:16:08,082 INFO L85 PathProgramCache]: Analyzing trace with hash 2002868872, now seen corresponding path program 1 times [2021-11-12 22:16:08,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:16:08,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [319195621] [2021-11-12 22:16:08,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:16:08,105 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:16:08,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:16:08,108 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:16:08,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:16:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:16:12,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 1784 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 22:16:12,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:16:12,687 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-12 22:16:12,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:16:12,909 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-12 22:16:12,910 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:16:12,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [319195621] [2021-11-12 22:16:12,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [319195621] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:16:12,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:16:12,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-12 22:16:12,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288256928] [2021-11-12 22:16:12,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:16:12,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 22:16:12,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:16:12,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 22:16:12,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:16:12,952 INFO L87 Difference]: Start difference. First operand has 124 states, 79 states have (on average 1.3037974683544304) internal successors, (103), 80 states have internal predecessors, (103), 33 states have call successors, (33), 10 states have call predecessors, (33), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-12 22:16:13,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:16:13,020 INFO L93 Difference]: Finished difference Result 243 states and 348 transitions. [2021-11-12 22:16:13,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 22:16:13,022 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 51 [2021-11-12 22:16:13,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:16:13,040 INFO L225 Difference]: With dead ends: 243 [2021-11-12 22:16:13,040 INFO L226 Difference]: Without dead ends: 119 [2021-11-12 22:16:13,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:16:13,053 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.05ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 22:16:13,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 5.05ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 22:16:13,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-12 22:16:13,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-11-12 22:16:13,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 75 states have (on average 1.28) internal successors, (96), 76 states have internal predecessors, (96), 33 states have call successors, (33), 10 states have call predecessors, (33), 10 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-11-12 22:16:13,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 161 transitions. [2021-11-12 22:16:13,133 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 161 transitions. Word has length 51 [2021-11-12 22:16:13,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:16:13,135 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 161 transitions. [2021-11-12 22:16:13,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-12 22:16:13,136 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 161 transitions. [2021-11-12 22:16:13,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-12 22:16:13,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:16:13,147 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:16:13,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:16:13,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:16:13,362 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:16:13,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:16:13,363 INFO L85 PathProgramCache]: Analyzing trace with hash 598414408, now seen corresponding path program 1 times [2021-11-12 22:16:13,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:16:13,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [210160385] [2021-11-12 22:16:13,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:16:13,366 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:16:13,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:16:13,367 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:16:13,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:16:17,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:16:17,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 1784 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:16:17,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:16:17,710 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-12 22:16:17,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:16:17,848 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-12 22:16:17,848 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:16:17,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [210160385] [2021-11-12 22:16:17,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [210160385] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:16:17,849 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:16:17,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:16:17,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577282929] [2021-11-12 22:16:17,849 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:16:17,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:16:17,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:16:17,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:16:17,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:16:17,852 INFO L87 Difference]: Start difference. First operand 119 states and 161 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-12 22:16:17,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:16:17,905 INFO L93 Difference]: Finished difference Result 165 states and 221 transitions. [2021-11-12 22:16:17,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:16:17,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 51 [2021-11-12 22:16:17,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:16:17,913 INFO L225 Difference]: With dead ends: 165 [2021-11-12 22:16:17,914 INFO L226 Difference]: Without dead ends: 129 [2021-11-12 22:16:17,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:16:17,915 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 6 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.80ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.50ms IncrementalHoareTripleChecker+Time [2021-11-12 22:16:17,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 331 Invalid, 6 Unknown, 0 Unchecked, 3.80ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 32.50ms Time] [2021-11-12 22:16:17,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-11-12 22:16:17,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 122. [2021-11-12 22:16:17,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 77 states have (on average 1.2857142857142858) internal successors, (99), 78 states have internal predecessors, (99), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-12 22:16:17,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 166 transitions. [2021-11-12 22:16:17,932 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 166 transitions. Word has length 51 [2021-11-12 22:16:17,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:16:17,933 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 166 transitions. [2021-11-12 22:16:17,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-12 22:16:17,933 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 166 transitions. [2021-11-12 22:16:17,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-12 22:16:17,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:16:17,936 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:16:17,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:16:18,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:16:18,162 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:16:18,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:16:18,163 INFO L85 PathProgramCache]: Analyzing trace with hash 536374794, now seen corresponding path program 1 times [2021-11-12 22:16:18,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:16:18,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71647250] [2021-11-12 22:16:18,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:16:18,166 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:16:18,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:16:18,170 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:16:18,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:16:22,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:16:22,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 1784 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:16:22,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:16:22,651 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-12 22:16:22,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:16:22,946 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-12 22:16:22,946 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:16:22,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71647250] [2021-11-12 22:16:22,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [71647250] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:16:22,946 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:16:22,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 22:16:22,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853660720] [2021-11-12 22:16:22,947 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:16:22,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:16:22,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:16:22,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:16:22,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:16:22,948 INFO L87 Difference]: Start difference. First operand 122 states and 166 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-12 22:16:23,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:16:23,047 INFO L93 Difference]: Finished difference Result 180 states and 245 transitions. [2021-11-12 22:16:23,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:16:23,047 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 51 [2021-11-12 22:16:23,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:16:23,050 INFO L225 Difference]: With dead ends: 180 [2021-11-12 22:16:23,050 INFO L226 Difference]: Without dead ends: 144 [2021-11-12 22:16:23,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:16:23,052 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 8 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.84ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 77.91ms IncrementalHoareTripleChecker+Time [2021-11-12 22:16:23,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 474 Invalid, 21 Unknown, 0 Unchecked, 4.84ms Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 77.91ms Time] [2021-11-12 22:16:23,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-11-12 22:16:23,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 138. [2021-11-12 22:16:23,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 88 states have (on average 1.2954545454545454) internal successors, (114), 89 states have internal predecessors, (114), 39 states have call successors, (39), 10 states have call predecessors, (39), 10 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-11-12 22:16:23,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 191 transitions. [2021-11-12 22:16:23,070 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 191 transitions. Word has length 51 [2021-11-12 22:16:23,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:16:23,070 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 191 transitions. [2021-11-12 22:16:23,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-12 22:16:23,071 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 191 transitions. [2021-11-12 22:16:23,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-12 22:16:23,073 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:16:23,073 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:16:23,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 22:16:23,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:16:23,274 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:16:23,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:16:23,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1692368516, now seen corresponding path program 1 times [2021-11-12 22:16:23,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:16:23,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [821550155] [2021-11-12 22:16:23,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:16:23,278 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:16:23,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:16:23,279 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:16:23,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 22:16:27,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:16:27,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 1791 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:16:27,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:16:27,495 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-12 22:16:27,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:16:27,692 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-12 22:16:27,692 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:16:27,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [821550155] [2021-11-12 22:16:27,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [821550155] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:16:27,692 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:16:27,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 22:16:27,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383610867] [2021-11-12 22:16:27,692 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:16:27,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:16:27,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:16:27,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:16:27,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:16:27,694 INFO L87 Difference]: Start difference. First operand 138 states and 191 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-12 22:16:27,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:16:27,745 INFO L93 Difference]: Finished difference Result 164 states and 226 transitions. [2021-11-12 22:16:27,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:16:27,750 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 60 [2021-11-12 22:16:27,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:16:27,753 INFO L225 Difference]: With dead ends: 164 [2021-11-12 22:16:27,753 INFO L226 Difference]: Without dead ends: 143 [2021-11-12 22:16:27,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:16:27,755 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 0 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.69ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.41ms IncrementalHoareTripleChecker+Time [2021-11-12 22:16:27,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 471 Invalid, 11 Unknown, 0 Unchecked, 2.69ms Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 40.41ms Time] [2021-11-12 22:16:27,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-12 22:16:27,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2021-11-12 22:16:27,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 92 states have (on average 1.2826086956521738) internal successors, (118), 91 states have internal predecessors, (118), 39 states have call successors, (39), 10 states have call predecessors, (39), 11 states have return successors, (41), 41 states have call predecessors, (41), 38 states have call successors, (41) [2021-11-12 22:16:27,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 198 transitions. [2021-11-12 22:16:27,771 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 198 transitions. Word has length 60 [2021-11-12 22:16:27,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:16:27,772 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 198 transitions. [2021-11-12 22:16:27,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-12 22:16:27,773 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 198 transitions. [2021-11-12 22:16:27,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-12 22:16:27,774 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:16:27,775 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:16:27,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 22:16:27,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:16:27,975 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:16:27,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:16:27,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1323998280, now seen corresponding path program 1 times [2021-11-12 22:16:27,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:16:27,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [395172331] [2021-11-12 22:16:27,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:16:27,980 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:16:27,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:16:27,981 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:16:27,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 22:16:31,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:16:32,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 1792 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:16:32,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:16:32,356 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-12 22:16:32,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:16:32,624 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-12 22:16:32,624 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:16:32,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [395172331] [2021-11-12 22:16:32,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [395172331] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:16:32,625 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:16:32,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-12 22:16:32,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034237763] [2021-11-12 22:16:32,625 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:16:32,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:16:32,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:16:32,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:16:32,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:16:32,627 INFO L87 Difference]: Start difference. First operand 143 states and 198 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-12 22:16:32,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:16:32,773 INFO L93 Difference]: Finished difference Result 207 states and 286 transitions. [2021-11-12 22:16:32,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:16:32,776 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 61 [2021-11-12 22:16:32,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:16:32,778 INFO L225 Difference]: With dead ends: 207 [2021-11-12 22:16:32,778 INFO L226 Difference]: Without dead ends: 165 [2021-11-12 22:16:32,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:16:32,779 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 5 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.79ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 90.29ms IncrementalHoareTripleChecker+Time [2021-11-12 22:16:32,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 658 Invalid, 24 Unknown, 0 Unchecked, 3.79ms Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 90.29ms Time] [2021-11-12 22:16:32,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-11-12 22:16:32,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 161. [2021-11-12 22:16:32,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 104 states have (on average 1.2788461538461537) internal successors, (133), 104 states have internal predecessors, (133), 45 states have call successors, (45), 10 states have call predecessors, (45), 11 states have return successors, (46), 46 states have call predecessors, (46), 42 states have call successors, (46) [2021-11-12 22:16:32,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 224 transitions. [2021-11-12 22:16:32,820 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 224 transitions. Word has length 61 [2021-11-12 22:16:32,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:16:32,821 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 224 transitions. [2021-11-12 22:16:32,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-12 22:16:32,821 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 224 transitions. [2021-11-12 22:16:32,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-12 22:16:32,823 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:16:32,823 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:16:32,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 22:16:33,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:16:33,039 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:16:33,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:16:33,040 INFO L85 PathProgramCache]: Analyzing trace with hash -921581174, now seen corresponding path program 1 times [2021-11-12 22:16:33,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:16:33,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [365592029] [2021-11-12 22:16:33,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:16:33,043 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:16:33,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:16:33,044 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:16:33,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 22:16:36,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:16:36,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 1792 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-12 22:16:36,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:16:37,405 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-12 22:16:37,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:16:37,696 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-12 22:16:37,697 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:16:37,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [365592029] [2021-11-12 22:16:37,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [365592029] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:16:37,697 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:16:37,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-12 22:16:37,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670543876] [2021-11-12 22:16:37,698 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:16:37,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 22:16:37,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:16:37,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 22:16:37,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:16:37,699 INFO L87 Difference]: Start difference. First operand 161 states and 224 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-11-12 22:16:38,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:16:38,073 INFO L93 Difference]: Finished difference Result 189 states and 259 transitions. [2021-11-12 22:16:38,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-12 22:16:38,074 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 61 [2021-11-12 22:16:38,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:16:38,076 INFO L225 Difference]: With dead ends: 189 [2021-11-12 22:16:38,076 INFO L226 Difference]: Without dead ends: 169 [2021-11-12 22:16:38,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-12 22:16:38,078 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 27 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 191.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.23ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 212.80ms IncrementalHoareTripleChecker+Time [2021-11-12 22:16:38,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 983 Invalid, 70 Unknown, 0 Unchecked, 6.23ms Time], IncrementalHoareTripleChecker [6 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 212.80ms Time] [2021-11-12 22:16:38,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-11-12 22:16:38,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 160. [2021-11-12 22:16:38,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 103 states have (on average 1.2815533980582525) internal successors, (132), 103 states have internal predecessors, (132), 45 states have call successors, (45), 10 states have call predecessors, (45), 11 states have return successors, (46), 46 states have call predecessors, (46), 42 states have call successors, (46) [2021-11-12 22:16:38,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 223 transitions. [2021-11-12 22:16:38,092 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 223 transitions. Word has length 61 [2021-11-12 22:16:38,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:16:38,093 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 223 transitions. [2021-11-12 22:16:38,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-11-12 22:16:38,093 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 223 transitions. [2021-11-12 22:16:38,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-12 22:16:38,095 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:16:38,096 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:16:38,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 22:16:38,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:16:38,311 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:16:38,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:16:38,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1231915283, now seen corresponding path program 1 times [2021-11-12 22:16:38,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:16:38,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [538602126] [2021-11-12 22:16:38,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:16:38,315 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:16:38,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:16:38,316 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:16:38,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 22:16:42,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:16:42,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 1857 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-12 22:16:42,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:16:43,132 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-12 22:16:43,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:16:45,377 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-12 22:16:45,378 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:16:45,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [538602126] [2021-11-12 22:16:45,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [538602126] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:16:45,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:16:45,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 16 [2021-11-12 22:16:45,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221076960] [2021-11-12 22:16:45,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:16:45,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 22:16:45,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:16:45,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 22:16:45,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-11-12 22:16:45,381 INFO L87 Difference]: Start difference. First operand 160 states and 223 transitions. Second operand has 10 states, 8 states have (on average 6.5) internal successors, (52), 9 states have internal predecessors, (52), 6 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2021-11-12 22:16:46,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:16:46,080 INFO L93 Difference]: Finished difference Result 249 states and 345 transitions. [2021-11-12 22:16:46,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-12 22:16:46,081 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.5) internal successors, (52), 9 states have internal predecessors, (52), 6 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 89 [2021-11-12 22:16:46,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:16:46,083 INFO L225 Difference]: With dead ends: 249 [2021-11-12 22:16:46,083 INFO L226 Difference]: Without dead ends: 147 [2021-11-12 22:16:46,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2021-11-12 22:16:46,085 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 11 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 293.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.41ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 319.27ms IncrementalHoareTripleChecker+Time [2021-11-12 22:16:46,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 1273 Invalid, 117 Unknown, 0 Unchecked, 6.41ms Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 21 Unchecked, 319.27ms Time] [2021-11-12 22:16:46,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-11-12 22:16:46,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2021-11-12 22:16:46,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 94 states have (on average 1.2659574468085106) internal successors, (119), 95 states have internal predecessors, (119), 41 states have call successors, (41), 10 states have call predecessors, (41), 11 states have return successors, (41), 41 states have call predecessors, (41), 38 states have call successors, (41) [2021-11-12 22:16:46,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 201 transitions. [2021-11-12 22:16:46,099 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 201 transitions. Word has length 89 [2021-11-12 22:16:46,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:16:46,099 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 201 transitions. [2021-11-12 22:16:46,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.5) internal successors, (52), 9 states have internal predecessors, (52), 6 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2021-11-12 22:16:46,099 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 201 transitions. [2021-11-12 22:16:46,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-12 22:16:46,101 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:16:46,102 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:16:46,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-12 22:16:46,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:16:46,316 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:16:46,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:16:46,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1509060067, now seen corresponding path program 1 times [2021-11-12 22:16:46,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:16:46,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377619572] [2021-11-12 22:16:46,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:16:46,320 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:16:46,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:16:46,321 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:16:46,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 22:16:50,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:16:50,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 1858 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-12 22:16:50,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:16:51,124 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-12 22:16:51,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:16:53,130 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-12 22:16:53,130 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:16:53,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377619572] [2021-11-12 22:16:53,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377619572] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:16:53,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:16:53,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 16 [2021-11-12 22:16:53,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831283671] [2021-11-12 22:16:53,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:16:53,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 22:16:53,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:16:53,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 22:16:53,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-11-12 22:16:53,133 INFO L87 Difference]: Start difference. First operand 147 states and 201 transitions. Second operand has 10 states, 8 states have (on average 5.75) internal successors, (46), 9 states have internal predecessors, (46), 6 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2021-11-12 22:16:53,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:16:53,695 INFO L93 Difference]: Finished difference Result 208 states and 277 transitions. [2021-11-12 22:16:53,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-12 22:16:53,696 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.75) internal successors, (46), 9 states have internal predecessors, (46), 6 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 85 [2021-11-12 22:16:53,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:16:53,698 INFO L225 Difference]: With dead ends: 208 [2021-11-12 22:16:53,698 INFO L226 Difference]: Without dead ends: 65 [2021-11-12 22:16:53,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2021-11-12 22:16:53,700 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 11 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 208.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.80ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 227.10ms IncrementalHoareTripleChecker+Time [2021-11-12 22:16:53,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 991 Invalid, 101 Unknown, 0 Unchecked, 4.80ms Time], IncrementalHoareTripleChecker [3 Valid, 80 Invalid, 0 Unknown, 18 Unchecked, 227.10ms Time] [2021-11-12 22:16:53,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-12 22:16:53,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-11-12 22:16:53,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 42 states have (on average 1.1904761904761905) internal successors, (50), 43 states have internal predecessors, (50), 17 states have call successors, (17), 6 states have call predecessors, (17), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-12 22:16:53,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 82 transitions. [2021-11-12 22:16:53,708 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 82 transitions. Word has length 85 [2021-11-12 22:16:53,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:16:53,709 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 82 transitions. [2021-11-12 22:16:53,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.75) internal successors, (46), 9 states have internal predecessors, (46), 6 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2021-11-12 22:16:53,710 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 82 transitions. [2021-11-12 22:16:53,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-12 22:16:53,711 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:16:53,712 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:16:53,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-12 22:16:53,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:16:53,921 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:16:53,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:16:53,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1836992773, now seen corresponding path program 1 times [2021-11-12 22:16:53,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:16:53,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1519417126] [2021-11-12 22:16:53,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:16:53,925 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:16:53,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:16:53,926 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:16:53,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 22:16:57,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:16:58,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 1863 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-12 22:16:58,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:16:58,834 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-12 22:16:58,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:16:59,291 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-12 22:16:59,291 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:16:59,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1519417126] [2021-11-12 22:16:59,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1519417126] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:16:59,291 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:16:59,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 5] imperfect sequences [] total 10 [2021-11-12 22:16:59,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36143678] [2021-11-12 22:16:59,292 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:16:59,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 22:16:59,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:16:59,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 22:16:59,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:16:59,294 INFO L87 Difference]: Start difference. First operand 65 states and 82 transitions. Second operand has 10 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 7 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2021-11-12 22:16:59,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:16:59,532 INFO L93 Difference]: Finished difference Result 113 states and 142 transitions. [2021-11-12 22:16:59,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 22:16:59,533 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 7 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 96 [2021-11-12 22:16:59,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:16:59,534 INFO L225 Difference]: With dead ends: 113 [2021-11-12 22:16:59,535 INFO L226 Difference]: Without dead ends: 65 [2021-11-12 22:16:59,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-12 22:16:59,536 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 25 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 144.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.49ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 173.02ms IncrementalHoareTripleChecker+Time [2021-11-12 22:16:59,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 639 Invalid, 63 Unknown, 0 Unchecked, 3.49ms Time], IncrementalHoareTripleChecker [10 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 173.02ms Time] [2021-11-12 22:16:59,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-12 22:16:59,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-11-12 22:16:59,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 43 states have internal predecessors, (49), 17 states have call successors, (17), 6 states have call predecessors, (17), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-12 22:16:59,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 81 transitions. [2021-11-12 22:16:59,542 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 81 transitions. Word has length 96 [2021-11-12 22:16:59,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:16:59,543 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 81 transitions. [2021-11-12 22:16:59,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 7 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2021-11-12 22:16:59,543 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 81 transitions. [2021-11-12 22:16:59,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-12 22:16:59,545 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:16:59,545 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:16:59,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 22:16:59,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:16:59,762 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:16:59,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:16:59,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1490623869, now seen corresponding path program 1 times [2021-11-12 22:16:59,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:16:59,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1718043904] [2021-11-12 22:16:59,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:16:59,770 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:16:59,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:16:59,770 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:16:59,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 22:17:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:17:03,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 1863 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-12 22:17:03,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:17:04,675 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-12 22:17:04,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:17:05,351 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-12 22:17:05,352 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:17:05,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1718043904] [2021-11-12 22:17:05,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1718043904] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:17:05,352 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:17:05,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 16 [2021-11-12 22:17:05,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342827735] [2021-11-12 22:17:05,353 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:17:05,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-12 22:17:05,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:17:05,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-12 22:17:05,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-11-12 22:17:05,354 INFO L87 Difference]: Start difference. First operand 65 states and 81 transitions. Second operand has 16 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 9 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2021-11-12 22:17:05,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:17:05,754 INFO L93 Difference]: Finished difference Result 76 states and 92 transitions. [2021-11-12 22:17:05,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-12 22:17:05,755 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 9 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) Word has length 96 [2021-11-12 22:17:05,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:17:05,756 INFO L225 Difference]: With dead ends: 76 [2021-11-12 22:17:05,756 INFO L226 Difference]: Without dead ends: 0 [2021-11-12 22:17:05,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2021-11-12 22:17:05,757 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 29 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 204.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.20ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 222.52ms IncrementalHoareTripleChecker+Time [2021-11-12 22:17:05,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 485 Invalid, 112 Unknown, 0 Unchecked, 2.20ms Time], IncrementalHoareTripleChecker [14 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 222.52ms Time] [2021-11-12 22:17:05,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-12 22:17:05,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-12 22:17:05,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:17:05,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-12 22:17:05,759 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 96 [2021-11-12 22:17:05,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:17:05,759 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-12 22:17:05,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 9 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2021-11-12 22:17:05,760 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-12 22:17:05,760 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-12 22:17:05,762 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 22:17:05,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 22:17:05,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:17:05,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-12 22:17:07,063 INFO L854 garLoopResultBuilder]: At program point L6815(lines 6806 6816) the Hoare annotation is: (exists ((|ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1| (_ BitVec 64))) (and (bvult |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1| |ensure_string_is_allocated_bounded_length_#in~max_size#1|) (bvule (bvadd (_ bv9223372036853541257 64) |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1|) (_ bv36028797018963967 64)))) [2021-11-12 22:17:07,063 INFO L858 garLoopResultBuilder]: For program point ensure_string_is_allocated_bounded_lengthEXIT(lines 6800 6804) no Hoare annotation was computed. [2021-11-12 22:17:07,063 INFO L854 garLoopResultBuilder]: At program point L6810(line 6810) the Hoare annotation is: (and (exists ((|ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1| (_ BitVec 64))) (and (bvult |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1| |ensure_string_is_allocated_bounded_length_#in~max_size#1|) (bvule (bvadd (_ bv9223372036853541257 64) |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1|) (_ bv36028797018963967 64)))) (bvult |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1| |ensure_string_is_allocated_bounded_length_#in~max_size#1|) (= |ensure_string_is_allocated_bounded_length_~max_size#1| |ensure_string_is_allocated_bounded_length_#in~max_size#1|) (bvult |ensure_string_is_allocated_bounded_length_~len~1#1| |ensure_string_is_allocated_bounded_length_#in~max_size#1|)) [2021-11-12 22:17:07,063 INFO L858 garLoopResultBuilder]: For program point L6807-1(line 6807) no Hoare annotation was computed. [2021-11-12 22:17:07,063 INFO L854 garLoopResultBuilder]: At program point L6807(line 6807) the Hoare annotation is: (and (bvult |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1| |ensure_string_is_allocated_bounded_length_#in~max_size#1|) (= |ensure_string_is_allocated_bounded_length_~max_size#1| |ensure_string_is_allocated_bounded_length_#in~max_size#1|) (bvult |ensure_string_is_allocated_bounded_length_~len~1#1| |ensure_string_is_allocated_bounded_length_#in~max_size#1|)) [2021-11-12 22:17:07,064 INFO L858 garLoopResultBuilder]: For program point L6810-3(line 6810) no Hoare annotation was computed. [2021-11-12 22:17:07,064 INFO L854 garLoopResultBuilder]: At program point L6810-2(line 6810) the Hoare annotation is: (exists ((|ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1| (_ BitVec 64))) (and (bvult |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1| |ensure_string_is_allocated_bounded_length_#in~max_size#1|) (bvule (bvadd (_ bv9223372036853541257 64) |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1|) (_ bv36028797018963967 64)))) [2021-11-12 22:17:07,064 INFO L858 garLoopResultBuilder]: For program point L6810-1(lines 6810 6811) no Hoare annotation was computed. [2021-11-12 22:17:07,064 INFO L854 garLoopResultBuilder]: At program point L6802(line 6802) the Hoare annotation is: (= |ensure_string_is_allocated_bounded_length_~max_size#1| |ensure_string_is_allocated_bounded_length_#in~max_size#1|) [2021-11-12 22:17:07,064 INFO L861 garLoopResultBuilder]: At program point ensure_string_is_allocated_bounded_lengthENTRY(lines 6800 6804) the Hoare annotation is: true [2021-11-12 22:17:07,064 INFO L858 garLoopResultBuilder]: For program point L6810-5(lines 6810 6811) no Hoare annotation was computed. [2021-11-12 22:17:07,064 INFO L858 garLoopResultBuilder]: For program point L6801-1(line 6801) no Hoare annotation was computed. [2021-11-12 22:17:07,064 INFO L854 garLoopResultBuilder]: At program point L6801(line 6801) the Hoare annotation is: (= |ensure_string_is_allocated_bounded_length_~max_size#1| |ensure_string_is_allocated_bounded_length_#in~max_size#1|) [2021-11-12 22:17:07,065 INFO L858 garLoopResultBuilder]: For program point L6802-1(line 6802) no Hoare annotation was computed. [2021-11-12 22:17:07,065 INFO L858 garLoopResultBuilder]: For program point ensure_string_is_allocated_bounded_lengthFINAL(lines 6800 6804) no Hoare annotation was computed. [2021-11-12 22:17:07,065 INFO L861 garLoopResultBuilder]: At program point bounded_mallocENTRY(lines 6882 6887) the Hoare annotation is: true [2021-11-12 22:17:07,065 INFO L858 garLoopResultBuilder]: For program point bounded_mallocFINAL(lines 6882 6887) no Hoare annotation was computed. [2021-11-12 22:17:07,066 INFO L858 garLoopResultBuilder]: For program point bounded_mallocEXIT(lines 6882 6887) no Hoare annotation was computed. [2021-11-12 22:17:07,066 INFO L858 garLoopResultBuilder]: For program point L6883-1(lines 6883 6885) no Hoare annotation was computed. [2021-11-12 22:17:07,066 INFO L854 garLoopResultBuilder]: At program point L6883(lines 6883 6885) the Hoare annotation is: (= bounded_malloc_~size |bounded_malloc_#in~size|) [2021-11-12 22:17:07,066 INFO L858 garLoopResultBuilder]: For program point nondet_boolFINAL(line 261) no Hoare annotation was computed. [2021-11-12 22:17:07,066 INFO L858 garLoopResultBuilder]: For program point nondet_boolEXIT(line 261) no Hoare annotation was computed. [2021-11-12 22:17:07,066 INFO L861 garLoopResultBuilder]: At program point nondet_boolENTRY(line 261) the Hoare annotation is: true [2021-11-12 22:17:07,067 INFO L861 garLoopResultBuilder]: At program point aws_string_bytesENTRY(lines 6242 6246) the Hoare annotation is: true [2021-11-12 22:17:07,067 INFO L858 garLoopResultBuilder]: For program point aws_string_bytesEXIT(lines 6242 6246) no Hoare annotation was computed. [2021-11-12 22:17:07,067 INFO L858 garLoopResultBuilder]: For program point aws_string_bytesFINAL(lines 6242 6246) no Hoare annotation was computed. [2021-11-12 22:17:07,067 INFO L861 garLoopResultBuilder]: At program point L6244-1(line 6244) the Hoare annotation is: true [2021-11-12 22:17:07,067 INFO L858 garLoopResultBuilder]: For program point L6244-2(line 6244) no Hoare annotation was computed. [2021-11-12 22:17:07,067 INFO L861 garLoopResultBuilder]: At program point L6244(line 6244) the Hoare annotation is: true [2021-11-12 22:17:07,068 INFO L858 garLoopResultBuilder]: For program point L211-2(lines 210 212) no Hoare annotation was computed. [2021-11-12 22:17:07,068 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 210 212) the Hoare annotation is: true [2021-11-12 22:17:07,068 INFO L858 garLoopResultBuilder]: For program point L211(line 211) no Hoare annotation was computed. [2021-11-12 22:17:07,068 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 210 212) no Hoare annotation was computed. [2021-11-12 22:17:07,068 INFO L858 garLoopResultBuilder]: For program point can_fail_allocatorFINAL(lines 6889 6891) no Hoare annotation was computed. [2021-11-12 22:17:07,068 INFO L858 garLoopResultBuilder]: For program point can_fail_allocatorEXIT(lines 6889 6891) no Hoare annotation was computed. [2021-11-12 22:17:07,069 INFO L861 garLoopResultBuilder]: At program point can_fail_allocatorENTRY(lines 6889 6891) the Hoare annotation is: true [2021-11-12 22:17:07,069 INFO L861 garLoopResultBuilder]: At program point aws_string_is_validENTRY(lines 6252 6257) the Hoare annotation is: true [2021-11-12 22:17:07,069 INFO L858 garLoopResultBuilder]: For program point L6256-2(line 6256) no Hoare annotation was computed. [2021-11-12 22:17:07,069 INFO L858 garLoopResultBuilder]: For program point L6256(line 6256) no Hoare annotation was computed. [2021-11-12 22:17:07,069 INFO L858 garLoopResultBuilder]: For program point L6256-5(line 6256) no Hoare annotation was computed. [2021-11-12 22:17:07,069 INFO L858 garLoopResultBuilder]: For program point aws_string_is_validFINAL(lines 6252 6257) no Hoare annotation was computed. [2021-11-12 22:17:07,070 INFO L858 garLoopResultBuilder]: For program point L6256-3(line 6256) no Hoare annotation was computed. [2021-11-12 22:17:07,070 INFO L858 garLoopResultBuilder]: For program point aws_string_is_validEXIT(lines 6252 6257) no Hoare annotation was computed. [2021-11-12 22:17:07,070 INFO L858 garLoopResultBuilder]: For program point nondet_uint64_tEXIT(line 266) no Hoare annotation was computed. [2021-11-12 22:17:07,070 INFO L861 garLoopResultBuilder]: At program point nondet_uint64_tENTRY(line 266) the Hoare annotation is: true [2021-11-12 22:17:07,070 INFO L858 garLoopResultBuilder]: For program point nondet_uint64_tFINAL(line 266) no Hoare annotation was computed. [2021-11-12 22:17:07,070 INFO L858 garLoopResultBuilder]: For program point L7100-1(lines 7099 7112) no Hoare annotation was computed. [2021-11-12 22:17:07,071 INFO L854 garLoopResultBuilder]: At program point L7100(line 7100) the Hoare annotation is: false [2021-11-12 22:17:07,071 INFO L854 garLoopResultBuilder]: At program point L9557(line 9557) the Hoare annotation is: false [2021-11-12 22:17:07,071 INFO L854 garLoopResultBuilder]: At program point L9557-1(line 9557) the Hoare annotation is: false [2021-11-12 22:17:07,071 INFO L858 garLoopResultBuilder]: For program point L9557-2(line 9557) no Hoare annotation was computed. [2021-11-12 22:17:07,071 INFO L858 garLoopResultBuilder]: For program point L9549(lines 9549 9551) no Hoare annotation was computed. [2021-11-12 22:17:07,071 INFO L858 garLoopResultBuilder]: For program point L9553-1(lines 9537 9559) no Hoare annotation was computed. [2021-11-12 22:17:07,071 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-12 22:17:07,072 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-12 22:17:07,072 INFO L858 garLoopResultBuilder]: For program point L9537(lines 9537 9559) no Hoare annotation was computed. [2021-11-12 22:17:07,072 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-12 22:17:07,072 INFO L854 garLoopResultBuilder]: At program point L9554(line 9554) the Hoare annotation is: false [2021-11-12 22:17:07,072 INFO L854 garLoopResultBuilder]: At program point L9554-1(line 9554) the Hoare annotation is: false [2021-11-12 22:17:07,072 INFO L858 garLoopResultBuilder]: For program point L9554-2(line 9554) no Hoare annotation was computed. [2021-11-12 22:17:07,073 INFO L858 garLoopResultBuilder]: For program point L9542-1(lines 9542 9544) no Hoare annotation was computed. [2021-11-12 22:17:07,073 INFO L854 garLoopResultBuilder]: At program point L7110(line 7110) the Hoare annotation is: false [2021-11-12 22:17:07,073 INFO L854 garLoopResultBuilder]: At program point L9542-2(line 9542) the Hoare annotation is: (and (= (_ bv0 64) |ULTIMATE.start_aws_string_compare_harness_~str_a~1#1.base|) (= |ULTIMATE.start_aws_string_compare_harness_~str_a~1#1.offset| (_ bv0 64))) [2021-11-12 22:17:07,073 INFO L858 garLoopResultBuilder]: For program point L9542-3(lines 9542 9543) no Hoare annotation was computed. [2021-11-12 22:17:07,073 INFO L861 garLoopResultBuilder]: At program point L9538(line 9538) the Hoare annotation is: true [2021-11-12 22:17:07,073 INFO L854 garLoopResultBuilder]: At program point L7106(line 7106) the Hoare annotation is: false [2021-11-12 22:17:07,074 INFO L854 garLoopResultBuilder]: At program point L9542(line 9542) the Hoare annotation is: (and (= (_ bv0 64) |ULTIMATE.start_aws_string_compare_harness_~str_a~1#1.base|) (= |ULTIMATE.start_aws_string_compare_harness_~str_a~1#1.offset| (_ bv0 64))) [2021-11-12 22:17:07,074 INFO L858 garLoopResultBuilder]: For program point L7110-1(line 7110) no Hoare annotation was computed. [2021-11-12 22:17:07,074 INFO L858 garLoopResultBuilder]: For program point L9538-5(lines 9538 9539) no Hoare annotation was computed. [2021-11-12 22:17:07,074 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-12 22:17:07,074 INFO L858 garLoopResultBuilder]: For program point L7106-1(line 7106) no Hoare annotation was computed. [2021-11-12 22:17:07,074 INFO L858 garLoopResultBuilder]: For program point L9538-1(lines 9538 9539) no Hoare annotation was computed. [2021-11-12 22:17:07,074 INFO L858 garLoopResultBuilder]: For program point L9542-5(lines 9542 9543) no Hoare annotation was computed. [2021-11-12 22:17:07,075 INFO L861 garLoopResultBuilder]: At program point L9538-2(line 9538) the Hoare annotation is: true [2021-11-12 22:17:07,075 INFO L858 garLoopResultBuilder]: For program point L9538-3(line 9538) no Hoare annotation was computed. [2021-11-12 22:17:07,075 INFO L858 garLoopResultBuilder]: For program point L9542-7(lines 9542 9544) no Hoare annotation was computed. [2021-11-12 22:17:07,075 INFO L854 garLoopResultBuilder]: At program point L9547(line 9547) the Hoare annotation is: (and (= (_ bv0 64) |ULTIMATE.start_aws_string_compare_harness_~str_a~1#1.base|) (= |ULTIMATE.start_aws_string_compare_harness_~str_a~1#1.offset| (_ bv0 64)) (= |ULTIMATE.start_aws_string_compare_harness_~str_b~1#1.offset| (_ bv0 64)) (= (_ bv0 64) |ULTIMATE.start_aws_string_compare_harness_~str_b~1#1.base|)) [2021-11-12 22:17:07,075 INFO L858 garLoopResultBuilder]: For program point L9547-1(line 9547) no Hoare annotation was computed. [2021-11-12 22:17:07,075 INFO L858 garLoopResultBuilder]: For program point L7107-1(lines 7107 7109) no Hoare annotation was computed. [2021-11-12 22:17:07,076 INFO L854 garLoopResultBuilder]: At program point L7107(lines 7107 7109) the Hoare annotation is: false [2021-11-12 22:17:07,076 INFO L858 garLoopResultBuilder]: For program point L7099(lines 7099 7112) no Hoare annotation was computed. [2021-11-12 22:17:07,076 INFO L861 garLoopResultBuilder]: At program point L9560(line 9560) the Hoare annotation is: true [2021-11-12 22:17:07,076 INFO L858 garLoopResultBuilder]: For program point L9548(line 9548) no Hoare annotation was computed. [2021-11-12 22:17:07,076 INFO L854 garLoopResultBuilder]: At program point L9548-2(line 9548) the Hoare annotation is: (and (= (_ bv0 64) |ULTIMATE.start_aws_string_compare_harness_#t~ite1554#1.offset|) (= (_ bv0 64) |ULTIMATE.start_aws_string_compare_harness_~str_a~1#1.base|) (= |ULTIMATE.start_aws_string_compare_harness_~str_a~1#1.offset| (_ bv0 64)) (= (_ bv0 64) |ULTIMATE.start_aws_string_compare_harness_#t~ite1554#1.base|) (= |ULTIMATE.start_aws_string_compare_harness_~str_b~1#1.offset| (_ bv0 64)) (= (_ bv0 64) |ULTIMATE.start_aws_string_compare_harness_~str_b~1#1.base|)) [2021-11-12 22:17:07,076 INFO L858 garLoopResultBuilder]: For program point L9548-3(lines 9548 9552) no Hoare annotation was computed. [2021-11-12 22:17:07,077 INFO L861 garLoopResultBuilder]: At program point L9544(line 9544) the Hoare annotation is: true [2021-11-12 22:17:07,077 INFO L858 garLoopResultBuilder]: For program point L9548-4(lines 9537 9559) no Hoare annotation was computed. [2021-11-12 22:17:07,077 INFO L858 garLoopResultBuilder]: For program point L9544-1(line 9544) no Hoare annotation was computed. [2021-11-12 22:17:07,077 INFO L858 garLoopResultBuilder]: For program point L223(line 223) no Hoare annotation was computed. [2021-11-12 22:17:07,077 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 222 224) the Hoare annotation is: true [2021-11-12 22:17:07,077 INFO L858 garLoopResultBuilder]: For program point L223-1(line 223) no Hoare annotation was computed. [2021-11-12 22:17:07,077 INFO L858 garLoopResultBuilder]: For program point L223-3(lines 222 224) no Hoare annotation was computed. [2021-11-12 22:17:07,078 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 222 224) no Hoare annotation was computed. [2021-11-12 22:17:07,078 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 223) no Hoare annotation was computed. [2021-11-12 22:17:07,078 INFO L861 garLoopResultBuilder]: At program point aws_string_compareENTRY(lines 9218 9252) the Hoare annotation is: true [2021-11-12 22:17:07,078 INFO L858 garLoopResultBuilder]: For program point L9239-2(line 9239) no Hoare annotation was computed. [2021-11-12 22:17:07,078 INFO L854 garLoopResultBuilder]: At program point L9239(line 9239) the Hoare annotation is: (or (not (= |aws_string_compare_#in~a.offset| |aws_string_compare_#in~b.offset|)) (not (= |aws_string_compare_#in~a.base| |aws_string_compare_#in~b.base|)) (not (= (_ bv0 64) |aws_string_compare_#in~a.base|)) (not (= |aws_string_compare_#in~a.offset| (_ bv0 64)))) [2021-11-12 22:17:07,079 INFO L854 garLoopResultBuilder]: At program point L9239-1(line 9239) the Hoare annotation is: (or (not (= |aws_string_compare_#in~a.offset| |aws_string_compare_#in~b.offset|)) (not (= |aws_string_compare_#in~a.base| |aws_string_compare_#in~b.base|)) (not (= (_ bv0 64) |aws_string_compare_#in~a.base|)) (not (= |aws_string_compare_#in~a.offset| (_ bv0 64)))) [2021-11-12 22:17:07,079 INFO L858 garLoopResultBuilder]: For program point L9219(line 9219) no Hoare annotation was computed. [2021-11-12 22:17:07,079 INFO L854 garLoopResultBuilder]: At program point L9219-2(line 9219) the Hoare annotation is: (or (not (= (_ bv0 64) |aws_string_compare_#in~b.base|)) (and (= (_ bv0 64) aws_string_compare_~b.base) (= aws_string_compare_~b.offset (_ bv0 64)) (= (_ bv0 64) aws_string_compare_~a.offset) (= (_ bv0 64) aws_string_compare_~a.base)) (not (= (_ bv0 64) |aws_string_compare_#in~a.base|)) (not (= (_ bv0 64) |aws_string_compare_#in~b.offset|)) (not (= |aws_string_compare_#in~a.offset| (_ bv0 64)))) [2021-11-12 22:17:07,079 INFO L858 garLoopResultBuilder]: For program point L9219-3(line 9219) no Hoare annotation was computed. [2021-11-12 22:17:07,079 INFO L858 garLoopResultBuilder]: For program point L9248(lines 9248 9250) no Hoare annotation was computed. [2021-11-12 22:17:07,079 INFO L854 garLoopResultBuilder]: At program point L9219-4(line 9219) the Hoare annotation is: (or (not (= (_ bv0 64) |aws_string_compare_#in~b.base|)) (and (= (_ bv0 64) aws_string_compare_~b.base) (= aws_string_compare_~b.offset (_ bv0 64)) (= (_ bv0 64) aws_string_compare_~a.offset) (= (_ bv0 64) aws_string_compare_~a.base)) (not (= (_ bv0 64) |aws_string_compare_#in~a.base|)) (not (= (_ bv0 64) |aws_string_compare_#in~b.offset|)) (not (= |aws_string_compare_#in~a.offset| (_ bv0 64)))) [2021-11-12 22:17:07,079 INFO L858 garLoopResultBuilder]: For program point L9219-5(line 9219) no Hoare annotation was computed. [2021-11-12 22:17:07,080 INFO L854 garLoopResultBuilder]: At program point L9240(line 9240) the Hoare annotation is: (or (not (= |aws_string_compare_#in~a.offset| |aws_string_compare_#in~b.offset|)) (not (= |aws_string_compare_#in~a.base| |aws_string_compare_#in~b.base|)) (not (= (_ bv0 64) |aws_string_compare_#in~a.base|)) (not (= |aws_string_compare_#in~a.offset| (_ bv0 64)))) [2021-11-12 22:17:07,080 INFO L854 garLoopResultBuilder]: At program point L9240-1(line 9240) the Hoare annotation is: (or (not (= |aws_string_compare_#in~a.offset| |aws_string_compare_#in~b.offset|)) (not (= |aws_string_compare_#in~a.base| |aws_string_compare_#in~b.base|)) (not (= (_ bv0 64) |aws_string_compare_#in~a.base|)) (not (= |aws_string_compare_#in~a.offset| (_ bv0 64)))) [2021-11-12 22:17:07,080 INFO L858 garLoopResultBuilder]: For program point L9240-2(line 9240) no Hoare annotation was computed. [2021-11-12 22:17:07,080 INFO L858 garLoopResultBuilder]: For program point L9220(line 9220) no Hoare annotation was computed. [2021-11-12 22:17:07,080 INFO L854 garLoopResultBuilder]: At program point L9220-2(line 9220) the Hoare annotation is: (or (not (= (_ bv0 64) |aws_string_compare_#in~b.base|)) (and (= (_ bv0 64) aws_string_compare_~b.base) (= aws_string_compare_~b.offset (_ bv0 64)) (= (_ bv0 64) aws_string_compare_~a.offset) (= (_ bv0 64) aws_string_compare_~a.base)) (not (= (_ bv0 64) |aws_string_compare_#in~a.base|)) (not (= (_ bv0 64) |aws_string_compare_#in~b.offset|)) (not (= |aws_string_compare_#in~a.offset| (_ bv0 64)))) [2021-11-12 22:17:07,080 INFO L858 garLoopResultBuilder]: For program point L9224(lines 9224 9228) no Hoare annotation was computed. [2021-11-12 22:17:07,081 INFO L858 garLoopResultBuilder]: For program point L9245(lines 9245 9247) no Hoare annotation was computed. [2021-11-12 22:17:07,081 INFO L858 garLoopResultBuilder]: For program point L9220-3(line 9220) no Hoare annotation was computed. [2021-11-12 22:17:07,081 INFO L854 garLoopResultBuilder]: At program point L9220-4(line 9220) the Hoare annotation is: (or (not (= (_ bv0 64) |aws_string_compare_#in~b.base|)) (and (= (_ bv0 64) aws_string_compare_~b.base) (= aws_string_compare_~b.offset (_ bv0 64)) (= (_ bv0 64) aws_string_compare_~a.offset) (= (_ bv0 64) aws_string_compare_~a.base)) (not (= (_ bv0 64) |aws_string_compare_#in~a.base|)) (not (= (_ bv0 64) |aws_string_compare_#in~b.offset|)) (not (= |aws_string_compare_#in~a.offset| (_ bv0 64)))) [2021-11-12 22:17:07,081 INFO L858 garLoopResultBuilder]: For program point L9220-5(line 9220) no Hoare annotation was computed. [2021-11-12 22:17:07,081 INFO L858 garLoopResultBuilder]: For program point L9237(line 9237) no Hoare annotation was computed. [2021-11-12 22:17:07,081 INFO L858 garLoopResultBuilder]: For program point L9237-2(line 9237) no Hoare annotation was computed. [2021-11-12 22:17:07,082 INFO L854 garLoopResultBuilder]: At program point L9241(line 9241) the Hoare annotation is: (or (not (= |aws_string_compare_#in~a.offset| |aws_string_compare_#in~b.offset|)) (not (= |aws_string_compare_#in~a.base| |aws_string_compare_#in~b.base|)) (not (= (_ bv0 64) |aws_string_compare_#in~a.base|)) (not (= |aws_string_compare_#in~a.offset| (_ bv0 64)))) [2021-11-12 22:17:07,082 INFO L854 garLoopResultBuilder]: At program point L9241-1(line 9241) the Hoare annotation is: (or (not (= |aws_string_compare_#in~a.offset| |aws_string_compare_#in~b.offset|)) (not (= |aws_string_compare_#in~a.base| |aws_string_compare_#in~b.base|)) (not (= (_ bv0 64) |aws_string_compare_#in~a.base|)) (not (= |aws_string_compare_#in~a.offset| (_ bv0 64)))) [2021-11-12 22:17:07,082 INFO L858 garLoopResultBuilder]: For program point L9241-2(line 9241) no Hoare annotation was computed. [2021-11-12 22:17:07,082 INFO L858 garLoopResultBuilder]: For program point L9229(lines 9229 9233) no Hoare annotation was computed. [2021-11-12 22:17:07,082 INFO L858 garLoopResultBuilder]: For program point L9221(lines 9221 9223) no Hoare annotation was computed. [2021-11-12 22:17:07,082 INFO L858 garLoopResultBuilder]: For program point L9242(lines 9242 9244) no Hoare annotation was computed. [2021-11-12 22:17:07,082 INFO L858 garLoopResultBuilder]: For program point aws_string_compareEXIT(lines 9218 9252) no Hoare annotation was computed. [2021-11-12 22:17:07,083 INFO L858 garLoopResultBuilder]: For program point aws_string_compareFINAL(lines 9218 9252) no Hoare annotation was computed. [2021-11-12 22:17:07,086 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:17:07,087 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 22:17:07,093 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1,QUANTIFIED] [2021-11-12 22:17:07,094 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1,QUANTIFIED] [2021-11-12 22:17:07,098 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1,QUANTIFIED] [2021-11-12 22:17:07,098 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1,QUANTIFIED] [2021-11-12 22:17:07,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 10:17:07 BoogieIcfgContainer [2021-11-12 22:17:07,100 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 22:17:07,100 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 22:17:07,100 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 22:17:07,100 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 22:17:07,101 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:16:07" (3/4) ... [2021-11-12 22:17:07,103 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-12 22:17:07,109 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ensure_string_is_allocated_bounded_length [2021-11-12 22:17:07,109 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure bounded_malloc [2021-11-12 22:17:07,109 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_uint64_t [2021-11-12 22:17:07,109 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_bool [2021-11-12 22:17:07,109 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_string_bytes [2021-11-12 22:17:07,110 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-11-12 22:17:07,110 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-11-12 22:17:07,110 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_string_compare [2021-11-12 22:17:07,110 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure can_fail_allocator [2021-11-12 22:17:07,110 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_string_is_valid [2021-11-12 22:17:07,125 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 125 nodes and edges [2021-11-12 22:17:07,127 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 57 nodes and edges [2021-11-12 22:17:07,128 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2021-11-12 22:17:07,130 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-11-12 22:17:07,132 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-12 22:17:07,133 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-12 22:17:07,135 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-12 22:17:07,137 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-12 22:17:07,168 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1 : bv64 :: ~bvult64(ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1, \old(max_size)) && ~bvule64(~bvadd16(9223372036853541257bv64, ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1), 36028797018963967bv64)) [2021-11-12 22:17:08,010 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-12 22:17:08,011 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 22:17:08,012 INFO L158 Benchmark]: Toolchain (without parser) took 78691.20ms. Allocated memory was 65.0MB in the beginning and 752.9MB in the end (delta: 687.9MB). Free memory was 36.0MB in the beginning and 670.8MB in the end (delta: -634.8MB). Peak memory consumption was 494.4MB. Max. memory is 16.1GB. [2021-11-12 22:17:08,012 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 65.0MB. Free memory was 46.9MB in the beginning and 46.9MB in the end (delta: 44.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:17:08,012 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4071.20ms. Allocated memory was 65.0MB in the beginning and 121.6MB in the end (delta: 56.6MB). Free memory was 35.8MB in the beginning and 46.7MB in the end (delta: -11.0MB). Peak memory consumption was 77.1MB. Max. memory is 16.1GB. [2021-11-12 22:17:08,013 INFO L158 Benchmark]: Boogie Procedure Inliner took 302.63ms. Allocated memory is still 121.6MB. Free memory was 46.7MB in the beginning and 72.1MB in the end (delta: -25.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-12 22:17:08,013 INFO L158 Benchmark]: Boogie Preprocessor took 159.02ms. Allocated memory is still 121.6MB. Free memory was 72.1MB in the beginning and 62.1MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 22:17:08,014 INFO L158 Benchmark]: RCFGBuilder took 14069.80ms. Allocated memory was 121.6MB in the beginning and 597.7MB in the end (delta: 476.1MB). Free memory was 62.1MB in the beginning and 303.4MB in the end (delta: -241.3MB). Peak memory consumption was 355.1MB. Max. memory is 16.1GB. [2021-11-12 22:17:08,014 INFO L158 Benchmark]: TraceAbstraction took 59169.41ms. Allocated memory was 597.7MB in the beginning and 752.9MB in the end (delta: 155.2MB). Free memory was 302.4MB in the beginning and 641.9MB in the end (delta: -339.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:17:08,015 INFO L158 Benchmark]: Witness Printer took 910.62ms. Allocated memory is still 752.9MB. Free memory was 641.9MB in the beginning and 670.8MB in the end (delta: -28.9MB). Peak memory consumption was 413.0MB. Max. memory is 16.1GB. [2021-11-12 22:17:08,017 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 65.0MB. Free memory was 46.9MB in the beginning and 46.9MB in the end (delta: 44.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4071.20ms. Allocated memory was 65.0MB in the beginning and 121.6MB in the end (delta: 56.6MB). Free memory was 35.8MB in the beginning and 46.7MB in the end (delta: -11.0MB). Peak memory consumption was 77.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 302.63ms. Allocated memory is still 121.6MB. Free memory was 46.7MB in the beginning and 72.1MB in the end (delta: -25.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 159.02ms. Allocated memory is still 121.6MB. Free memory was 72.1MB in the beginning and 62.1MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 14069.80ms. Allocated memory was 121.6MB in the beginning and 597.7MB in the end (delta: 476.1MB). Free memory was 62.1MB in the beginning and 303.4MB in the end (delta: -241.3MB). Peak memory consumption was 355.1MB. Max. memory is 16.1GB. * TraceAbstraction took 59169.41ms. Allocated memory was 597.7MB in the beginning and 752.9MB in the end (delta: 155.2MB). Free memory was 302.4MB in the beginning and 641.9MB in the end (delta: -339.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 910.62ms. Allocated memory is still 752.9MB. Free memory was 641.9MB in the beginning and 670.8MB in the end (delta: -28.9MB). Peak memory consumption was 413.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 223]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 124 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 59.1s, OverallIterations: 10, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 140 SdHoareTripleChecker+Valid, 1395.82ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 122 mSDsluCounter, 6472 SdHoareTripleChecker+Invalid, 1244.84ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 39 IncrementalHoareTripleChecker+Unchecked, 5081 mSDsCounter, 40 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 446 IncrementalHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 40 mSolverCounterUnsat, 1391 mSDtfsCounter, 446 mSolverCounterSat, 43.30ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1401 GetRequests, 1319 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=161occurred in iteration=5, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 26 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 45 LocationsWithAnnotation, 306 PreInvPairs, 330 NumberOfFragments, 351 HoareAnnotationTreeSize, 306 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 45 FomulaSimplificationsInter, 384 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 1.1s SsaConstructionTime, 36.9s SatisfiabilityAnalysisTime, 13.1s InterpolantComputationTime, 701 NumberOfCodeBlocks, 701 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1382 ConstructedInterpolants, 20 QuantifiedInterpolants, 2846 SizeOfPredicates, 38 NumberOfNonLiveVariables, 18168 ConjunctsInSsa, 89 ConjunctsInUnsatCore, 20 InterpolantComputations, 17 PerfectInterpolantSequences, 706/732 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 6806]: Loop Invariant [2021-11-12 22:17:08,026 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1,QUANTIFIED] [2021-11-12 22:17:08,026 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1,QUANTIFIED] [2021-11-12 22:17:08,026 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1,QUANTIFIED] [2021-11-12 22:17:08,026 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1,QUANTIFIED] Derived loop invariant: (\exists ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1 : bv64 :: ~bvult64(ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1, \old(max_size)) && ~bvule64(~bvadd16(9223372036853541257bv64, ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1), 36028797018963967bv64)) - InvariantResult [Line: 9560]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-12 22:17:08,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef22fdcd-59d8-416f-be29-8bcc8f5eb0d1/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE