./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reset_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_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/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_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reset_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/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_d3ee79c0-928b-4216-96b6-9fa307df446c/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 26dd1e590401fc7cb1a23c07b0d1f52f89cca75ab7679d1aa0110320620b8ebd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:09:39,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:09:39,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:09:39,612 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:09:39,613 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:09:39,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:09:39,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:09:39,624 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:09:39,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:09:39,632 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:09:39,634 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:09:39,636 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:09:39,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:09:39,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:09:39,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:09:39,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:09:39,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:09:39,650 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:09:39,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:09:39,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:09:39,663 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:09:39,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:09:39,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:09:39,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:09:39,682 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:09:39,682 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:09:39,683 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:09:39,685 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:09:39,686 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:09:39,688 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:09:39,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:09:39,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:09:39,692 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:09:39,693 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:09:39,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:09:39,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:09:39,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:09:39,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:09:39,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:09:39,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:09:39,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:09:39,700 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 23:09:39,743 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:09:39,744 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:09:39,744 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:09:39,745 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:09:39,745 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:09:39,745 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:09:39,746 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:09:39,746 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:09:39,746 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:09:39,746 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:09:39,747 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:09:39,747 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:09:39,747 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:09:39,747 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:09:39,748 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:09:39,748 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:09:39,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:09:39,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:09:39,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:09:39,750 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:09:39,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:09:39,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:09:39,750 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:09:39,751 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:09:39,751 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:09:39,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:09:39,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:09:39,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:09:39,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:09:39,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:09:39,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:09:39,753 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:09:39,753 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:09:39,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:09:39,754 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:09:39,754 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:09:39,754 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:09:39,754 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_d3ee79c0-928b-4216-96b6-9fa307df446c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26dd1e590401fc7cb1a23c07b0d1f52f89cca75ab7679d1aa0110320620b8ebd [2021-11-12 23:09:40,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:09:40,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:09:40,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:09:40,114 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:09:40,114 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:09:40,115 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reset_harness.i [2021-11-12 23:09:40,232 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/data/9d2004a18/b7c6fdb98e6e44efa7c3681d77df14ab/FLAG07aa38b94 [2021-11-12 23:09:41,254 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:09:41,255 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/sv-benchmarks/c/aws-c-common/aws_byte_buf_reset_harness.i [2021-11-12 23:09:41,306 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/data/9d2004a18/b7c6fdb98e6e44efa7c3681d77df14ab/FLAG07aa38b94 [2021-11-12 23:09:41,644 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/data/9d2004a18/b7c6fdb98e6e44efa7c3681d77df14ab [2021-11-12 23:09:41,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:09:41,648 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:09:41,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:09:41,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:09:41,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:09:41,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:09:41" (1/1) ... [2021-11-12 23:09:41,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67a1b7f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:41, skipping insertion in model container [2021-11-12 23:09:41,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:09:41" (1/1) ... [2021-11-12 23:09:41,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:09:41,790 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:09:42,122 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_d3ee79c0-928b-4216-96b6-9fa307df446c/sv-benchmarks/c/aws-c-common/aws_byte_buf_reset_harness.i[4492,4505] [2021-11-12 23:09:42,130 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_d3ee79c0-928b-4216-96b6-9fa307df446c/sv-benchmarks/c/aws-c-common/aws_byte_buf_reset_harness.i[4552,4565] [2021-11-12 23:09:42,158 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:09:42,165 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:09:43,276 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:43,277 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:43,278 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:43,279 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:43,280 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:43,317 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:43,319 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:43,321 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:43,322 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:43,839 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:09:43,841 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:09:43,842 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:09:43,844 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:09:43,846 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:09:43,847 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:09:43,848 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:09:43,849 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:09:43,850 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:09:43,851 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:09:44,089 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:09:44,266 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:44,267 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:44,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:09:44,486 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 23:09:44,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2a077867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:44, skipping insertion in model container [2021-11-12 23:09:44,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:09:44,488 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:09:44,490 INFO L158 Benchmark]: Toolchain (without parser) took 2841.01ms. Allocated memory is still 130.0MB. Free memory was 83.1MB in the beginning and 91.5MB in the end (delta: -8.4MB). Peak memory consumption was 42.3MB. Max. memory is 16.1GB. [2021-11-12 23:09:44,491 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 130.0MB. Free memory was 103.5MB in the beginning and 103.5MB in the end (delta: 25.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:09:44,510 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2829.79ms. Allocated memory is still 130.0MB. Free memory was 83.1MB in the beginning and 91.5MB in the end (delta: -8.4MB). Peak memory consumption was 42.3MB. Max. memory is 16.1GB. [2021-11-12 23:09:44,513 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 130.0MB. Free memory was 103.5MB in the beginning and 103.5MB in the end (delta: 25.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2829.79ms. Allocated memory is still 130.0MB. Free memory was 83.1MB in the beginning and 91.5MB in the end (delta: -8.4MB). Peak memory consumption was 42.3MB. 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_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/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_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reset_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/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_d3ee79c0-928b-4216-96b6-9fa307df446c/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 26dd1e590401fc7cb1a23c07b0d1f52f89cca75ab7679d1aa0110320620b8ebd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:09:46,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:09:46,949 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:09:47,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:09:47,015 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:09:47,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:09:47,023 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:09:47,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:09:47,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:09:47,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:09:47,042 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:09:47,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:09:47,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:09:47,048 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:09:47,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:09:47,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:09:47,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:09:47,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:09:47,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:09:47,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:09:47,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:09:47,075 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:09:47,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:09:47,081 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:09:47,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:09:47,092 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:09:47,093 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:09:47,095 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:09:47,096 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:09:47,097 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:09:47,097 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:09:47,099 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:09:47,101 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:09:47,102 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:09:47,104 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:09:47,105 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:09:47,106 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:09:47,106 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:09:47,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:09:47,109 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:09:47,110 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:09:47,111 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 23:09:47,160 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:09:47,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:09:47,162 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:09:47,162 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:09:47,162 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:09:47,163 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:09:47,163 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:09:47,163 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:09:47,163 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:09:47,164 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:09:47,166 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:09:47,167 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:09:47,167 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:09:47,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:09:47,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:09:47,168 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:09:47,168 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:09:47,168 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:09:47,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:09:47,168 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:09:47,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:09:47,169 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:09:47,169 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:09:47,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:09:47,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:09:47,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:09:47,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:09:47,171 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:09:47,171 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:09:47,171 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:09:47,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:09:47,171 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:09:47,172 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:09:47,172 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_d3ee79c0-928b-4216-96b6-9fa307df446c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26dd1e590401fc7cb1a23c07b0d1f52f89cca75ab7679d1aa0110320620b8ebd [2021-11-12 23:09:47,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:09:47,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:09:47,675 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:09:47,677 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:09:47,678 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:09:47,679 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reset_harness.i [2021-11-12 23:09:47,769 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/data/111b5fe0c/8d7072e0f87f4f2287edbcaeef563ede/FLAG4c15d0e88 [2021-11-12 23:09:48,754 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:09:48,756 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/sv-benchmarks/c/aws-c-common/aws_byte_buf_reset_harness.i [2021-11-12 23:09:48,803 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/data/111b5fe0c/8d7072e0f87f4f2287edbcaeef563ede/FLAG4c15d0e88 [2021-11-12 23:09:49,163 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/data/111b5fe0c/8d7072e0f87f4f2287edbcaeef563ede [2021-11-12 23:09:49,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:09:49,167 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:09:49,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:09:49,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:09:49,174 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:09:49,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:09:49" (1/1) ... [2021-11-12 23:09:49,176 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@729a229a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:49, skipping insertion in model container [2021-11-12 23:09:49,176 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:09:49" (1/1) ... [2021-11-12 23:09:49,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:09:49,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:09:49,679 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_d3ee79c0-928b-4216-96b6-9fa307df446c/sv-benchmarks/c/aws-c-common/aws_byte_buf_reset_harness.i[4492,4505] [2021-11-12 23:09:49,687 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_d3ee79c0-928b-4216-96b6-9fa307df446c/sv-benchmarks/c/aws-c-common/aws_byte_buf_reset_harness.i[4552,4565] [2021-11-12 23:09:49,723 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:09:49,734 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:09:50,905 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:50,906 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:50,907 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:50,908 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:50,917 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:50,942 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:50,943 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:50,945 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:50,946 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:51,521 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:09:51,523 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:09:51,525 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:09:51,526 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:09:51,533 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:09:51,535 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:09:51,537 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:09:51,539 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:09:51,541 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:09:51,542 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:09:51,808 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:09:52,018 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:52,020 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:52,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:09:52,167 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:09:52,282 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:09:52,287 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_d3ee79c0-928b-4216-96b6-9fa307df446c/sv-benchmarks/c/aws-c-common/aws_byte_buf_reset_harness.i[4492,4505] [2021-11-12 23:09:52,288 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_d3ee79c0-928b-4216-96b6-9fa307df446c/sv-benchmarks/c/aws-c-common/aws_byte_buf_reset_harness.i[4552,4565] [2021-11-12 23:09:52,289 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:09:52,290 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:09:52,328 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:52,329 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:52,329 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:52,330 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:52,331 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:52,339 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:52,340 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:52,341 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:52,342 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:52,386 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:09:52,387 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:09:52,387 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:09:52,389 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:09:52,390 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:09:52,390 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:09:52,391 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:09:52,392 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:09:52,392 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:09:52,393 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:09:52,418 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:09:52,508 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:52,509 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:52,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:09:52,594 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:09:52,622 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_d3ee79c0-928b-4216-96b6-9fa307df446c/sv-benchmarks/c/aws-c-common/aws_byte_buf_reset_harness.i[4492,4505] [2021-11-12 23:09:52,622 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_d3ee79c0-928b-4216-96b6-9fa307df446c/sv-benchmarks/c/aws-c-common/aws_byte_buf_reset_harness.i[4552,4565] [2021-11-12 23:09:52,624 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:09:52,625 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:09:52,673 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:52,674 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:52,674 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:52,675 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:52,675 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:52,681 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:52,682 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:52,683 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:52,683 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:52,726 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:09:52,727 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:09:52,727 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:09:52,728 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:09:52,729 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:09:52,730 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:09:52,731 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:09:52,732 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:09:52,732 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:09:52,733 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:09:52,766 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:09:52,886 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:52,887 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:09:52,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:09:53,279 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:09:53,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:53 WrapperNode [2021-11-12 23:09:53,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:09:53,281 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:09:53,281 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:09:53,282 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:09:53,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:53" (1/1) ... [2021-11-12 23:09:53,473 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:53" (1/1) ... [2021-11-12 23:09:53,556 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:09:53,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:09:53,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:09:53,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:09:53,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:53" (1/1) ... [2021-11-12 23:09:53,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:53" (1/1) ... [2021-11-12 23:09:53,586 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:53" (1/1) ... [2021-11-12 23:09:53,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:53" (1/1) ... [2021-11-12 23:09:53,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:53" (1/1) ... [2021-11-12 23:09:53,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:53" (1/1) ... [2021-11-12 23:09:53,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:53" (1/1) ... [2021-11-12 23:09:53,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:09:53,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:09:53,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:09:53,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:09:53,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:53" (1/1) ... [2021-11-12 23:09:53,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:09:53,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:09:53,763 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:09:53,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:09:53,815 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-12 23:09:53,815 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-12 23:09:53,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:09:53,815 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-12 23:09:53,815 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-12 23:09:53,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:09:53,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 23:09:53,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 23:09:53,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 23:09:53,816 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 23:09:53,817 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_secure_zero [2021-11-12 23:09:53,817 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_secure_zero [2021-11-12 23:09:53,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:09:53,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:09:53,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:09:53,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:09:53,818 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-12 23:09:53,818 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-12 23:09:53,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:09:53,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 23:09:53,818 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 23:09:53,818 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 23:09:53,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:09:53,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:09:53,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 23:09:53,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 23:09:53,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 23:09:53,820 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-12 23:09:53,820 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-12 23:09:53,820 INFO L130 BoogieDeclarations]: Found specification of procedure assert_all_bytes_are [2021-11-12 23:09:53,820 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_all_bytes_are [2021-11-12 23:09:53,820 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-12 23:09:53,820 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-12 23:09:53,821 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2021-11-12 23:09:53,821 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2021-11-12 23:09:53,821 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2021-11-12 23:09:53,821 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2021-11-12 23:10:08,610 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:10:08,611 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 23:10:08,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:10:08 BoogieIcfgContainer [2021-11-12 23:10:08,614 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:10:08,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:10:08,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:10:08,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:10:08,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:09:49" (1/3) ... [2021-11-12 23:10:08,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fb9059e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:10:08, skipping insertion in model container [2021-11-12 23:10:08,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:53" (2/3) ... [2021-11-12 23:10:08,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fb9059e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:10:08, skipping insertion in model container [2021-11-12 23:10:08,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:10:08" (3/3) ... [2021-11-12 23:10:08,625 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_reset_harness.i [2021-11-12 23:10:08,632 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:10:08,633 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:10:08,728 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:10:08,735 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 23:10:08,735 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:10:08,764 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 78 states have (on average 1.2307692307692308) internal successors, (96), 80 states have internal predecessors, (96), 23 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-12 23:10:08,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-12 23:10:08,772 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:10:08,773 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:10:08,774 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:10:08,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:10:08,782 INFO L85 PathProgramCache]: Analyzing trace with hash 676321730, now seen corresponding path program 1 times [2021-11-12 23:10:08,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:10:08,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1411980421] [2021-11-12 23:10:08,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:10:08,811 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:10:08,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:10:08,817 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:10:08,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:10:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:10:13,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 1772 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:10:13,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:10:13,959 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-12 23:10:13,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:10:14,213 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-12 23:10:14,214 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:10:14,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1411980421] [2021-11-12 23:10:14,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1411980421] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:10:14,216 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:10:14,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:10:14,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025533740] [2021-11-12 23:10:14,219 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:10:14,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:10:14,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:10:14,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:10:14,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:10:14,259 INFO L87 Difference]: Start difference. First operand has 114 states, 78 states have (on average 1.2307692307692308) internal successors, (96), 80 states have internal predecessors, (96), 23 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) 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, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-12 23:10:14,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:10:14,304 INFO L93 Difference]: Finished difference Result 224 states and 296 transitions. [2021-11-12 23:10:14,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:10:14,307 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, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 46 [2021-11-12 23:10:14,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:10:14,332 INFO L225 Difference]: With dead ends: 224 [2021-11-12 23:10:14,333 INFO L226 Difference]: Without dead ends: 105 [2021-11-12 23:10:14,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 90 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 23:10:14,342 INFO L933 BasicCegarLoop]: 139 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, 139 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.28ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:10:14,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 2.28ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:10:14,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-11-12 23:10:14,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2021-11-12 23:10:14,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 71 states have (on average 1.1830985915492958) internal successors, (84), 73 states have internal predecessors, (84), 23 states have call successors, (23), 11 states have call predecessors, (23), 10 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-12 23:10:14,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 128 transitions. [2021-11-12 23:10:14,407 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 128 transitions. Word has length 46 [2021-11-12 23:10:14,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:10:14,408 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 128 transitions. [2021-11-12 23:10:14,409 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, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-11-12 23:10:14,409 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 128 transitions. [2021-11-12 23:10:14,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-12 23:10:14,412 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:10:14,413 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:10:14,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:10:14,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:10:14,638 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:10:14,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:10:14,639 INFO L85 PathProgramCache]: Analyzing trace with hash -570706232, now seen corresponding path program 1 times [2021-11-12 23:10:14,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:10:14,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146320963] [2021-11-12 23:10:14,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:10:14,648 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:10:14,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:10:14,650 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:10:14,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:10:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:10:19,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 1772 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:10:19,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:10:20,256 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:10:20,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:10:20,755 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-12 23:10:20,755 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:10:20,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146320963] [2021-11-12 23:10:20,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [146320963] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:10:20,756 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:10:20,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-12 23:10:20,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23391316] [2021-11-12 23:10:20,756 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:10:20,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:10:20,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:10:20,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:10:20,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:10:20,760 INFO L87 Difference]: Start difference. First operand 105 states and 128 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-12 23:10:21,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:10:21,087 INFO L93 Difference]: Finished difference Result 188 states and 232 transitions. [2021-11-12 23:10:21,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:10:21,093 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 46 [2021-11-12 23:10:21,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:10:21,098 INFO L225 Difference]: With dead ends: 188 [2021-11-12 23:10:21,099 INFO L226 Difference]: Without dead ends: 108 [2021-11-12 23:10:21,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:10:21,104 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 33 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 218.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.46ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 281.99ms IncrementalHoareTripleChecker+Time [2021-11-12 23:10:21,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 322 Invalid, 31 Unknown, 0 Unchecked, 9.46ms Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 281.99ms Time] [2021-11-12 23:10:21,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-11-12 23:10:21,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2021-11-12 23:10:21,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 73 states have (on average 1.178082191780822) internal successors, (86), 76 states have internal predecessors, (86), 23 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (23), 21 states have call predecessors, (23), 21 states have call successors, (23) [2021-11-12 23:10:21,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 132 transitions. [2021-11-12 23:10:21,153 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 132 transitions. Word has length 46 [2021-11-12 23:10:21,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:10:21,155 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 132 transitions. [2021-11-12 23:10:21,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-12 23:10:21,156 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 132 transitions. [2021-11-12 23:10:21,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-12 23:10:21,162 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:10:21,162 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:10:21,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:10:21,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:10:21,378 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:10:21,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:10:21,379 INFO L85 PathProgramCache]: Analyzing trace with hash -918947589, now seen corresponding path program 1 times [2021-11-12 23:10:21,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:10:21,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618970461] [2021-11-12 23:10:21,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:10:21,385 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:10:21,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:10:21,387 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:10:21,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:10:26,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:10:26,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 1782 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:10:26,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:10:26,607 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:10:26,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:10:26,821 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-12 23:10:26,821 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:10:26,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618970461] [2021-11-12 23:10:26,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618970461] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:10:26,822 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:10:26,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 23:10:26,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631623400] [2021-11-12 23:10:26,823 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:10:26,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:10:26,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:10:26,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:10:26,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:10:26,825 INFO L87 Difference]: Start difference. First operand 108 states and 132 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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 23:10:26,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:10:26,939 INFO L93 Difference]: Finished difference Result 201 states and 253 transitions. [2021-11-12 23:10:26,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:10:26,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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 52 [2021-11-12 23:10:26,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:10:26,945 INFO L225 Difference]: With dead ends: 201 [2021-11-12 23:10:26,948 INFO L226 Difference]: Without dead ends: 118 [2021-11-12 23:10:26,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:10:26,951 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 29 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.35ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75.06ms IncrementalHoareTripleChecker+Time [2021-11-12 23:10:26,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 365 Invalid, 15 Unknown, 0 Unchecked, 4.35ms Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 75.06ms Time] [2021-11-12 23:10:26,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-11-12 23:10:26,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 110. [2021-11-12 23:10:26,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 75 states have (on average 1.1733333333333333) internal successors, (88), 78 states have internal predecessors, (88), 23 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (23), 21 states have call predecessors, (23), 21 states have call successors, (23) [2021-11-12 23:10:26,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 134 transitions. [2021-11-12 23:10:26,976 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 134 transitions. Word has length 52 [2021-11-12 23:10:26,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:10:26,976 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 134 transitions. [2021-11-12 23:10:26,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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 23:10:26,977 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 134 transitions. [2021-11-12 23:10:26,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-12 23:10:26,981 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:10:26,982 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:10:27,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:10:27,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:10:27,190 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:10:27,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:10:27,190 INFO L85 PathProgramCache]: Analyzing trace with hash -101299139, now seen corresponding path program 1 times [2021-11-12 23:10:27,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:10:27,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1657661257] [2021-11-12 23:10:27,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:10:27,195 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:10:27,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:10:27,196 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:10:27,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:10:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:10:32,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 1785 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-12 23:10:32,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:10:32,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-12 23:10:33,739 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:10:33,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:10:34,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2021-11-12 23:10:35,309 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-12 23:10:35,310 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:10:35,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1657661257] [2021-11-12 23:10:35,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1657661257] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:10:35,310 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:10:35,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 10] imperfect sequences [] total 19 [2021-11-12 23:10:35,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216579864] [2021-11-12 23:10:35,311 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:10:35,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-12 23:10:35,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:10:35,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-12 23:10:35,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-11-12 23:10:35,314 INFO L87 Difference]: Start difference. First operand 110 states and 134 transitions. Second operand has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 16 states have internal predecessors, (53), 7 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2021-11-12 23:10:37,608 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:10:39,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:10:39,022 INFO L93 Difference]: Finished difference Result 216 states and 264 transitions. [2021-11-12 23:10:39,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 23:10:39,024 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 16 states have internal predecessors, (53), 7 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) Word has length 52 [2021-11-12 23:10:39,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:10:39,027 INFO L225 Difference]: With dead ends: 216 [2021-11-12 23:10:39,027 INFO L226 Difference]: Without dead ends: 124 [2021-11-12 23:10:39,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-11-12 23:10:39,030 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 63 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3397.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.42ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 74 IncrementalHoareTripleChecker+Unchecked, 3550.24ms IncrementalHoareTripleChecker+Time [2021-11-12 23:10:39,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 1161 Invalid, 202 Unknown, 0 Unchecked, 13.42ms Time], IncrementalHoareTripleChecker [21 Valid, 106 Invalid, 1 Unknown, 74 Unchecked, 3550.24ms Time] [2021-11-12 23:10:39,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-12 23:10:39,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 116. [2021-11-12 23:10:39,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 81 states have (on average 1.1851851851851851) internal successors, (96), 83 states have internal predecessors, (96), 23 states have call successors, (23), 12 states have call predecessors, (23), 11 states have return successors, (23), 21 states have call predecessors, (23), 21 states have call successors, (23) [2021-11-12 23:10:39,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 142 transitions. [2021-11-12 23:10:39,065 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 142 transitions. Word has length 52 [2021-11-12 23:10:39,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:10:39,066 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 142 transitions. [2021-11-12 23:10:39,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 16 states have internal predecessors, (53), 7 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2021-11-12 23:10:39,067 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 142 transitions. [2021-11-12 23:10:39,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-12 23:10:39,068 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:10:39,069 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:10:39,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:10:39,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:10:39,290 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:10:39,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:10:39,290 INFO L85 PathProgramCache]: Analyzing trace with hash -891681165, now seen corresponding path program 1 times [2021-11-12 23:10:39,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:10:39,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [84188017] [2021-11-12 23:10:39,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:10:39,295 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:10:39,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:10:39,296 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:10:39,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:10:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:10:44,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 1791 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:10:44,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:10:44,846 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:10:44,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:10:45,501 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-12 23:10:45,502 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:10:45,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [84188017] [2021-11-12 23:10:45,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [84188017] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:10:45,503 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:10:45,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-12 23:10:45,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63340488] [2021-11-12 23:10:45,503 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:10:45,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:10:45,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:10:45,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:10:45,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:10:45,505 INFO L87 Difference]: Start difference. First operand 116 states and 142 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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 23:10:47,740 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:10:49,755 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:10:51,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:10:51,098 INFO L93 Difference]: Finished difference Result 232 states and 293 transitions. [2021-11-12 23:10:51,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:10:51,100 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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 56 [2021-11-12 23:10:51,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:10:51,102 INFO L225 Difference]: With dead ends: 232 [2021-11-12 23:10:51,103 INFO L226 Difference]: Without dead ends: 146 [2021-11-12 23:10:51,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:10:51,105 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 70 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5062.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.45ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 5250.52ms IncrementalHoareTripleChecker+Time [2021-11-12 23:10:51,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 586 Invalid, 122 Unknown, 0 Unchecked, 4.45ms Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 2 Unknown, 34 Unchecked, 5250.52ms Time] [2021-11-12 23:10:51,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-11-12 23:10:51,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 125. [2021-11-12 23:10:51,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 90 states have (on average 1.2) internal successors, (108), 92 states have internal predecessors, (108), 23 states have call successors, (23), 12 states have call predecessors, (23), 11 states have return successors, (23), 21 states have call predecessors, (23), 21 states have call successors, (23) [2021-11-12 23:10:51,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 154 transitions. [2021-11-12 23:10:51,120 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 154 transitions. Word has length 56 [2021-11-12 23:10:51,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:10:51,121 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 154 transitions. [2021-11-12 23:10:51,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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 23:10:51,122 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 154 transitions. [2021-11-12 23:10:51,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-12 23:10:51,123 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:10:51,123 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:10:51,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:10:51,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:10:51,338 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:10:51,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:10:51,338 INFO L85 PathProgramCache]: Analyzing trace with hash -468979339, now seen corresponding path program 1 times [2021-11-12 23:10:51,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:10:51,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [486298521] [2021-11-12 23:10:51,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:10:51,342 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:10:51,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:10:51,343 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:10:51,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:10:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:10:55,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 1788 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-12 23:10:55,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:10:57,521 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-12 23:10:57,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:10:59,868 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-12 23:10:59,868 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:10:59,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [486298521] [2021-11-12 23:10:59,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [486298521] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:10:59,869 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:10:59,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 19 [2021-11-12 23:10:59,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450828961] [2021-11-12 23:10:59,869 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:10:59,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-12 23:10:59,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:10:59,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-12 23:10:59,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-11-12 23:10:59,871 INFO L87 Difference]: Start difference. First operand 125 states and 154 transitions. Second operand has 19 states, 18 states have (on average 2.888888888888889) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-12 23:11:02,146 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:11:06,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:11:06,680 INFO L93 Difference]: Finished difference Result 240 states and 304 transitions. [2021-11-12 23:11:06,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-12 23:11:06,683 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.888888888888889) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 56 [2021-11-12 23:11:06,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:11:06,685 INFO L225 Difference]: With dead ends: 240 [2021-11-12 23:11:06,685 INFO L226 Difference]: Without dead ends: 144 [2021-11-12 23:11:06,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=115, Invalid=641, Unknown=0, NotChecked=0, Total=756 [2021-11-12 23:11:06,688 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 84 mSDsluCounter, 1432 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3828.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 1553 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.71ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 152 IncrementalHoareTripleChecker+Unchecked, 4056.61ms IncrementalHoareTripleChecker+Time [2021-11-12 23:11:06,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 1553 Invalid, 474 Unknown, 0 Unchecked, 9.71ms Time], IncrementalHoareTripleChecker [13 Valid, 308 Invalid, 1 Unknown, 152 Unchecked, 4056.61ms Time] [2021-11-12 23:11:06,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-11-12 23:11:06,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 126. [2021-11-12 23:11:06,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 91 states have (on average 1.1758241758241759) internal successors, (107), 93 states have internal predecessors, (107), 23 states have call successors, (23), 12 states have call predecessors, (23), 11 states have return successors, (23), 21 states have call predecessors, (23), 21 states have call successors, (23) [2021-11-12 23:11:06,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 153 transitions. [2021-11-12 23:11:06,703 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 153 transitions. Word has length 56 [2021-11-12 23:11:06,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:11:06,703 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 153 transitions. [2021-11-12 23:11:06,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.888888888888889) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-12 23:11:06,704 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 153 transitions. [2021-11-12 23:11:06,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-12 23:11:06,705 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:11:06,706 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:11:06,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:11:06,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:11:06,921 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:11:06,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:11:06,921 INFO L85 PathProgramCache]: Analyzing trace with hash -829641551, now seen corresponding path program 1 times [2021-11-12 23:11:06,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:11:06,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1649395339] [2021-11-12 23:11:06,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:11:06,925 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:11:06,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:11:06,926 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:11:06,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:11:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:11:10,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 1789 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:11:10,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:11:11,228 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-12 23:11:11,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:11:11,636 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-12 23:11:11,636 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:11:11,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1649395339] [2021-11-12 23:11:11,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1649395339] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:11:11,636 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:11:11,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 10 [2021-11-12 23:11:11,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397344519] [2021-11-12 23:11:11,636 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:11:11,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 23:11:11,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:11:11,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 23:11:11,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:11:11,638 INFO L87 Difference]: Start difference. First operand 126 states and 153 transitions. Second operand has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-12 23:11:12,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:11:12,032 INFO L93 Difference]: Finished difference Result 232 states and 284 transitions. [2021-11-12 23:11:12,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-12 23:11:12,033 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2021-11-12 23:11:12,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:11:12,035 INFO L225 Difference]: With dead ends: 232 [2021-11-12 23:11:12,035 INFO L226 Difference]: Without dead ends: 136 [2021-11-12 23:11:12,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:11:12,037 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 14 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 263.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.05ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 286.81ms IncrementalHoareTripleChecker+Time [2021-11-12 23:11:12,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 806 Invalid, 87 Unknown, 0 Unchecked, 4.05ms Time], IncrementalHoareTripleChecker [3 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 286.81ms Time] [2021-11-12 23:11:12,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-12 23:11:12,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 126. [2021-11-12 23:11:12,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 91 states have (on average 1.1758241758241759) internal successors, (107), 93 states have internal predecessors, (107), 23 states have call successors, (23), 12 states have call predecessors, (23), 11 states have return successors, (23), 21 states have call predecessors, (23), 21 states have call successors, (23) [2021-11-12 23:11:12,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 153 transitions. [2021-11-12 23:11:12,052 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 153 transitions. Word has length 56 [2021-11-12 23:11:12,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:11:12,052 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 153 transitions. [2021-11-12 23:11:12,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-12 23:11:12,053 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 153 transitions. [2021-11-12 23:11:12,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-12 23:11:12,054 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:11:12,055 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:11:12,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:11:12,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:11:12,273 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:11:12,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:11:12,274 INFO L85 PathProgramCache]: Analyzing trace with hash 452290476, now seen corresponding path program 1 times [2021-11-12 23:11:12,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:11:12,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [951979063] [2021-11-12 23:11:12,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:11:12,278 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:11:12,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:11:12,282 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:11:12,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:12:12,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:12:14,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 1793 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-12 23:12:14,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:12:15,909 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:12:15,910 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:12:15,910 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:12:15,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:12:15,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:12:15,912 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:12:15,912 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:12:15,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:12:15,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:12:15,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:12:15,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:12:15,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:12:15,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:12:15,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:12:15,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:12:15,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:12:15,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:12:15,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:12:15,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:12:15,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:12:15,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:12:15,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:12:15,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:12:15,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:12:15,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:12:15,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:12:15,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:12:15,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:12:15,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:12:15,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:12:15,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:12:15,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:12:15,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:12:15,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:12:15,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:12:15,993 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:12:15,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 118 treesize of output 96 [2021-11-12 23:12:16,142 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:12:16,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 99 treesize of output 35 [2021-11-12 23:12:16,427 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:12:16,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:12:20,154 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-12 23:12:20,154 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:12:20,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [951979063] [2021-11-12 23:12:20,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [951979063] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:12:20,154 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:12:20,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 7] imperfect sequences [] total 17 [2021-11-12 23:12:20,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386220381] [2021-11-12 23:12:20,154 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:12:20,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-12 23:12:20,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:12:20,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-12 23:12:20,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=226, Unknown=1, NotChecked=0, Total=272 [2021-11-12 23:12:20,156 INFO L87 Difference]: Start difference. First operand 126 states and 153 transitions. Second operand has 17 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 5 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-12 23:12:22,372 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:12:24,385 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:12:26,399 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:12:28,413 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:12:30,427 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:12:39,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:12:39,308 INFO L93 Difference]: Finished difference Result 159 states and 193 transitions. [2021-11-12 23:12:39,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:12:39,312 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 5 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 58 [2021-11-12 23:12:39,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:12:39,314 INFO L225 Difference]: With dead ends: 159 [2021-11-12 23:12:39,315 INFO L226 Difference]: Without dead ends: 157 [2021-11-12 23:12:39,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 98 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=82, Invalid=422, Unknown=2, NotChecked=0, Total=506 [2021-11-12 23:12:39,317 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 46 mSDsluCounter, 1306 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 11 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14934.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.13ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 15524.40ms IncrementalHoareTripleChecker+Time [2021-11-12 23:12:39,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 1423 Invalid, 493 Unknown, 0 Unchecked, 10.13ms Time], IncrementalHoareTripleChecker [11 Valid, 436 Invalid, 5 Unknown, 41 Unchecked, 15524.40ms Time] [2021-11-12 23:12:39,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-11-12 23:12:39,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 147. [2021-11-12 23:12:39,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 106 states have (on average 1.1603773584905661) internal successors, (123), 109 states have internal predecessors, (123), 26 states have call successors, (26), 14 states have call predecessors, (26), 14 states have return successors, (29), 24 states have call predecessors, (29), 24 states have call successors, (29) [2021-11-12 23:12:39,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 178 transitions. [2021-11-12 23:12:39,334 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 178 transitions. Word has length 58 [2021-11-12 23:12:39,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:12:39,334 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 178 transitions. [2021-11-12 23:12:39,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 5 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-12 23:12:39,335 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 178 transitions. [2021-11-12 23:12:39,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-12 23:12:39,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:12:39,341 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:12:39,566 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forcibly destroying the process [2021-11-12 23:12:39,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:12:39,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:12:39,623 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:12:39,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:12:39,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1189615206, now seen corresponding path program 1 times [2021-11-12 23:12:39,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:12:39,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489811003] [2021-11-12 23:12:39,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:12:39,626 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:12:39,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:12:39,627 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:12:39,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3ee79c0-928b-4216-96b6-9fa307df446c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:16:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:16:19,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 1804 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-12 23:16:19,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:16:19,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-12 23:16:19,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-12 23:16:20,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,184 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:16:20,187 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 23:16:20,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 36 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 22 [2021-11-12 23:16:20,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,359 INFO L244 Elim1Store]: Index analysis took 137 ms [2021-11-12 23:16:20,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:16:20,398 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:16:20,403 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 23:16:20,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 36 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 22 [2021-11-12 23:16:20,678 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 23:16:20,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 35 [2021-11-12 23:16:20,690 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 23:16:20,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2021-11-12 23:16:20,838 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-12 23:16:20,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:16:21,168 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:21,171 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 545 [2021-11-12 23:16:21,184 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:16:21,188 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 872 [2021-11-12 23:16:45,614 INFO L354 Elim1Store]: treesize reduction 55, result has 48.1 percent of original size [2021-11-12 23:16:45,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 1325527284 treesize of output 1157624082