./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_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_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/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_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/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_e30802d1-a39e-4f16-a18d-c046d3b88215/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 2d2088ac57520281350e2a5a3a1c8295b6f3f6b1edc40c64fce86e2816b5a5aa --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:23:04,557 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:23:04,559 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:23:04,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:23:04,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:23:04,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:23:04,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:23:04,627 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:23:04,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:23:04,638 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:23:04,639 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:23:04,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:23:04,642 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:23:04,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:23:04,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:23:04,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:23:04,656 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:23:04,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:23:04,662 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:23:04,667 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:23:04,671 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:23:04,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:23:04,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:23:04,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:23:04,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:23:04,685 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:23:04,685 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:23:04,687 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:23:04,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:23:04,690 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:23:04,691 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:23:04,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:23:04,694 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:23:04,695 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:23:04,697 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:23:04,698 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:23:04,698 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:23:04,699 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:23:04,699 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:23:04,700 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:23:04,702 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:23:04,703 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 23:23:04,736 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:23:04,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:23:04,737 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:23:04,738 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:23:04,738 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:23:04,738 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:23:04,738 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:23:04,739 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:23:04,739 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:23:04,739 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:23:04,739 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:23:04,740 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:23:04,740 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:23:04,740 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:23:04,740 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:23:04,741 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:23:04,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:23:04,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:23:04,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:23:04,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:23:04,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:23:04,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:23:04,743 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:23:04,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:23:04,743 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:23:04,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:23:04,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:23:04,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:23:04,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:23:04,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:23:04,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:23:04,745 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:23:04,745 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:23:04,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:23:04,746 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:23:04,746 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:23:04,746 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:23:04,747 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_e30802d1-a39e-4f16-a18d-c046d3b88215/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d2088ac57520281350e2a5a3a1c8295b6f3f6b1edc40c64fce86e2816b5a5aa [2021-11-12 23:23:05,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:23:05,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:23:05,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:23:05,038 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:23:05,039 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:23:05,040 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i [2021-11-12 23:23:05,106 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/data/1efcebbac/90782025f6ea4ce5b7f40159bfafdba5/FLAGa861a75dc [2021-11-12 23:23:06,007 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:23:06,008 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i [2021-11-12 23:23:06,041 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/data/1efcebbac/90782025f6ea4ce5b7f40159bfafdba5/FLAGa861a75dc [2021-11-12 23:23:06,478 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/data/1efcebbac/90782025f6ea4ce5b7f40159bfafdba5 [2021-11-12 23:23:06,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:23:06,482 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:23:06,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:23:06,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:23:06,486 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:23:06,487 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:23:06" (1/1) ... [2021-11-12 23:23:06,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dc5f593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:06, skipping insertion in model container [2021-11-12 23:23:06,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:23:06" (1/1) ... [2021-11-12 23:23:06,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:23:06,599 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:23:06,966 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_e30802d1-a39e-4f16-a18d-c046d3b88215/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i[4497,4510] [2021-11-12 23:23:06,976 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_e30802d1-a39e-4f16-a18d-c046d3b88215/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i[4557,4570] [2021-11-12 23:23:07,005 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:23:07,011 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:23:08,107 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:08,108 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:08,109 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:08,110 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:08,111 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:08,126 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:08,127 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:08,129 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:08,130 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:08,635 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:23:08,637 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:23:08,638 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:23:08,639 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:23:08,641 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:23:08,642 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:23:08,643 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:23:08,643 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:23:08,644 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:23:08,645 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:23:08,879 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:23:09,057 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:09,065 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:09,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:23:09,184 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 23:23:09,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@49ca0f54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:09, skipping insertion in model container [2021-11-12 23:23:09,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:23:09,186 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:23:09,189 INFO L158 Benchmark]: Toolchain (without parser) took 2704.87ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 58.6MB in the beginning and 53.3MB in the end (delta: 5.3MB). Peak memory consumption was 32.0MB. Max. memory is 16.1GB. [2021-11-12 23:23:09,190 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 86.0MB. Free memory was 66.0MB in the beginning and 66.0MB in the end (delta: 19.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:23:09,192 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2702.68ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 58.6MB in the beginning and 53.3MB in the end (delta: 5.3MB). Peak memory consumption was 32.0MB. Max. memory is 16.1GB. [2021-11-12 23:23:09,194 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 86.0MB. Free memory was 66.0MB in the beginning and 66.0MB in the end (delta: 19.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2702.68ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 58.6MB in the beginning and 53.3MB in the end (delta: 5.3MB). Peak memory consumption was 32.0MB. 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_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/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_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/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_e30802d1-a39e-4f16-a18d-c046d3b88215/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 2d2088ac57520281350e2a5a3a1c8295b6f3f6b1edc40c64fce86e2816b5a5aa --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:23:11,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:23:11,535 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:23:11,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:23:11,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:23:11,596 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:23:11,598 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:23:11,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:23:11,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:23:11,613 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:23:11,614 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:23:11,616 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:23:11,617 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:23:11,620 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:23:11,622 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:23:11,628 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:23:11,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:23:11,630 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:23:11,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:23:11,635 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:23:11,637 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:23:11,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:23:11,640 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:23:11,641 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:23:11,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:23:11,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:23:11,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:23:11,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:23:11,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:23:11,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:23:11,648 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:23:11,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:23:11,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:23:11,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:23:11,652 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:23:11,653 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:23:11,654 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:23:11,654 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:23:11,654 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:23:11,655 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:23:11,656 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:23:11,657 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 23:23:11,686 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:23:11,686 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:23:11,687 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:23:11,687 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:23:11,687 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:23:11,687 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:23:11,688 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:23:11,688 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:23:11,688 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:23:11,688 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:23:11,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:23:11,689 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:23:11,689 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:23:11,689 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:23:11,690 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:23:11,690 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:23:11,690 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:23:11,690 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:23:11,690 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:23:11,691 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:23:11,691 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:23:11,691 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:23:11,691 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:23:11,691 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:23:11,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:23:11,692 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:23:11,692 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:23:11,692 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:23:11,694 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:23:11,694 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:23:11,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:23:11,695 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:23:11,695 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:23:11,695 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_e30802d1-a39e-4f16-a18d-c046d3b88215/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d2088ac57520281350e2a5a3a1c8295b6f3f6b1edc40c64fce86e2816b5a5aa [2021-11-12 23:23:12,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:23:12,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:23:12,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:23:12,117 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:23:12,118 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:23:12,119 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i [2021-11-12 23:23:12,201 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/data/1298b713d/ae3c52e9c5db4c00a1e6fe38f202eaf7/FLAG3e435ee2b [2021-11-12 23:23:13,249 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:23:13,249 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i [2021-11-12 23:23:13,290 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/data/1298b713d/ae3c52e9c5db4c00a1e6fe38f202eaf7/FLAG3e435ee2b [2021-11-12 23:23:13,629 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/data/1298b713d/ae3c52e9c5db4c00a1e6fe38f202eaf7 [2021-11-12 23:23:13,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:23:13,635 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:23:13,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:23:13,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:23:13,644 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:23:13,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:23:13" (1/1) ... [2021-11-12 23:23:13,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74e33160 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:13, skipping insertion in model container [2021-11-12 23:23:13,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:23:13" (1/1) ... [2021-11-12 23:23:13,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:23:13,789 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:23:14,022 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_e30802d1-a39e-4f16-a18d-c046d3b88215/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i[4497,4510] [2021-11-12 23:23:14,031 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_e30802d1-a39e-4f16-a18d-c046d3b88215/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i[4557,4570] [2021-11-12 23:23:14,059 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:23:14,067 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:23:15,018 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:15,018 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:15,019 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:15,020 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:15,021 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:15,038 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:15,039 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:15,041 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:15,042 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:15,510 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:23:15,512 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:23:15,514 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:23:15,517 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:23:15,524 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:23:15,526 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:23:15,528 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:23:15,529 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:23:15,532 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:23:15,534 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:23:15,716 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:23:15,868 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:15,869 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:15,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:23:16,047 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:23:16,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:23:16,101 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_e30802d1-a39e-4f16-a18d-c046d3b88215/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i[4497,4510] [2021-11-12 23:23:16,102 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_e30802d1-a39e-4f16-a18d-c046d3b88215/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i[4557,4570] [2021-11-12 23:23:16,103 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:23:16,104 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:23:16,150 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:16,151 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:16,151 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:16,152 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:16,153 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:16,168 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:16,171 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:16,173 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:16,173 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:16,234 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:23:16,235 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:23:16,236 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:23:16,237 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:23:16,244 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:23:16,245 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:23:16,245 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:23:16,246 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:23:16,246 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:23:16,247 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:23:16,280 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:23:16,389 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:16,389 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:16,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:23:16,474 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:23:16,500 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_e30802d1-a39e-4f16-a18d-c046d3b88215/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i[4497,4510] [2021-11-12 23:23:16,500 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_e30802d1-a39e-4f16-a18d-c046d3b88215/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i[4557,4570] [2021-11-12 23:23:16,502 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:23:16,503 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:23:16,561 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:16,561 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:16,562 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:16,562 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:16,562 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:16,568 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:16,568 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:16,569 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:16,569 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:16,599 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:23:16,600 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:23:16,601 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:23:16,601 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:23:16,602 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:23:16,603 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:23:16,603 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:23:16,604 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:23:16,604 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:23:16,605 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:23:16,627 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:23:16,716 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:16,717 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:23:16,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:23:17,117 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:23:17,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:17 WrapperNode [2021-11-12 23:23:17,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:23:17,129 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:23:17,129 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:23:17,129 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:23:17,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:17" (1/1) ... [2021-11-12 23:23:17,245 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:17" (1/1) ... [2021-11-12 23:23:17,326 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:23:17,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:23:17,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:23:17,327 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:23:17,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:17" (1/1) ... [2021-11-12 23:23:17,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:17" (1/1) ... [2021-11-12 23:23:17,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:17" (1/1) ... [2021-11-12 23:23:17,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:17" (1/1) ... [2021-11-12 23:23:17,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:17" (1/1) ... [2021-11-12 23:23:17,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:17" (1/1) ... [2021-11-12 23:23:17,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:17" (1/1) ... [2021-11-12 23:23:17,464 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:23:17,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:23:17,465 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:23:17,465 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:23:17,466 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:17" (1/1) ... [2021-11-12 23:23:17,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:23:17,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:23:17,497 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:23:17,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:23:17,542 INFO L130 BoogieDeclarations]: Found specification of procedure htonl [2021-11-12 23:23:17,543 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-12 23:23:17,543 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-12 23:23:17,543 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hton32 [2021-11-12 23:23:17,543 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hton32 [2021-11-12 23:23:17,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:23:17,543 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-12 23:23:17,544 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-12 23:23:17,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:23:17,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 23:23:17,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 23:23:17,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 23:23:17,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 23:23:17,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:23:17,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:23:17,546 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-11-12 23:23:17,546 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-11-12 23:23:17,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:23:17,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:23:17,547 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-12 23:23:17,547 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-12 23:23:17,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:23:17,547 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-12 23:23:17,547 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-12 23:23:17,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 23:23:17,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:23:17,548 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 23:23:17,548 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 23:23:17,548 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-11-12 23:23:17,548 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-11-12 23:23:17,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:23:17,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:23:17,549 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2021-11-12 23:23:17,549 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2021-11-12 23:23:17,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 23:23:17,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 23:23:17,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:23:17,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 23:23:17,551 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-12 23:23:17,553 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-12 23:23:31,081 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:23:31,081 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 23:23:31,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:23:31 BoogieIcfgContainer [2021-11-12 23:23:31,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:23:31,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:23:31,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:23:31,088 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:23:31,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:23:13" (1/3) ... [2021-11-12 23:23:31,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eef8516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:23:31, skipping insertion in model container [2021-11-12 23:23:31,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:17" (2/3) ... [2021-11-12 23:23:31,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eef8516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:23:31, skipping insertion in model container [2021-11-12 23:23:31,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:23:31" (3/3) ... [2021-11-12 23:23:31,091 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_be32_harness.i [2021-11-12 23:23:31,097 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:23:31,097 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:23:31,145 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:23:31,151 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 23:23:31,152 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:23:31,171 INFO L276 IsEmpty]: Start isEmpty. Operand has 136 states, 88 states have (on average 1.2272727272727273) internal successors, (108), 89 states have internal predecessors, (108), 35 states have call successors, (35), 11 states have call predecessors, (35), 11 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-11-12 23:23:31,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-12 23:23:31,181 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:23:31,182 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:23:31,183 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:23:31,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:23:31,188 INFO L85 PathProgramCache]: Analyzing trace with hash -2088523989, now seen corresponding path program 1 times [2021-11-12 23:23:31,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:23:31,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671185118] [2021-11-12 23:23:31,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:23:31,210 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:23:31,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:23:31,213 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:23:31,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:23:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:23:35,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 1881 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:23:35,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:23:35,889 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-12 23:23:35,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:23:36,202 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-12 23:23:36,203 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:23:36,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671185118] [2021-11-12 23:23:36,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1671185118] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:23:36,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:23:36,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-12 23:23:36,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789673376] [2021-11-12 23:23:36,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:23:36,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:23:36,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:23:36,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:23:36,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:23:36,241 INFO L87 Difference]: Start difference. First operand has 136 states, 88 states have (on average 1.2272727272727273) internal successors, (108), 89 states have internal predecessors, (108), 35 states have call successors, (35), 11 states have call predecessors, (35), 11 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-12 23:23:36,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:23:36,283 INFO L93 Difference]: Finished difference Result 268 states and 377 transitions. [2021-11-12 23:23:36,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:23:36,285 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 90 [2021-11-12 23:23:36,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:23:36,295 INFO L225 Difference]: With dead ends: 268 [2021-11-12 23:23:36,296 INFO L226 Difference]: Without dead ends: 131 [2021-11-12 23:23:36,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 178 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 23:23:36,304 INFO L933 BasicCegarLoop]: 175 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, 175 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.22ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:23:36,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 2.22ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:23:36,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-12 23:23:36,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-11-12 23:23:36,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 84 states have (on average 1.2023809523809523) internal successors, (101), 85 states have internal predecessors, (101), 35 states have call successors, (35), 11 states have call predecessors, (35), 11 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-11-12 23:23:36,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 170 transitions. [2021-11-12 23:23:36,358 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 170 transitions. Word has length 90 [2021-11-12 23:23:36,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:23:36,359 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 170 transitions. [2021-11-12 23:23:36,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-12 23:23:36,359 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 170 transitions. [2021-11-12 23:23:36,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-12 23:23:36,364 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:23:36,365 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:23:36,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:23:36,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:23:36,589 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:23:36,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:23:36,590 INFO L85 PathProgramCache]: Analyzing trace with hash -171173329, now seen corresponding path program 1 times [2021-11-12 23:23:36,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:23:36,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1598765972] [2021-11-12 23:23:36,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:23:36,598 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:23:36,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:23:36,599 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:23:36,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:23:40,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:23:40,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 1881 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:23:40,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:23:41,363 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-12 23:23:41,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:23:41,861 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-12 23:23:41,861 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:23:41,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1598765972] [2021-11-12 23:23:41,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1598765972] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:23:41,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:23:41,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-12 23:23:41,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259123692] [2021-11-12 23:23:41,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:23:41,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:23:41,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:23:41,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:23:41,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:23:41,865 INFO L87 Difference]: Start difference. First operand 131 states and 170 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-12 23:23:42,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:23:42,246 INFO L93 Difference]: Finished difference Result 240 states and 319 transitions. [2021-11-12 23:23:42,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:23:42,248 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 90 [2021-11-12 23:23:42,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:23:42,252 INFO L225 Difference]: With dead ends: 240 [2021-11-12 23:23:42,255 INFO L226 Difference]: Without dead ends: 134 [2021-11-12 23:23:42,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 175 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 23:23:42,262 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 48 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 277.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.00ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 344.30ms IncrementalHoareTripleChecker+Time [2021-11-12 23:23:42,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 549 Invalid, 57 Unknown, 0 Unchecked, 7.00ms Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 344.30ms Time] [2021-11-12 23:23:42,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-12 23:23:42,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-11-12 23:23:42,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 86 states have (on average 1.197674418604651) internal successors, (103), 88 states have internal predecessors, (103), 35 states have call successors, (35), 11 states have call predecessors, (35), 12 states have return successors, (38), 34 states have call predecessors, (38), 34 states have call successors, (38) [2021-11-12 23:23:42,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 176 transitions. [2021-11-12 23:23:42,288 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 176 transitions. Word has length 90 [2021-11-12 23:23:42,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:23:42,288 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 176 transitions. [2021-11-12 23:23:42,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-12 23:23:42,289 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 176 transitions. [2021-11-12 23:23:42,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-12 23:23:42,291 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:23:42,292 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:23:42,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:23:42,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:23:42,513 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:23:42,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:23:42,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1214142116, now seen corresponding path program 1 times [2021-11-12 23:23:42,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:23:42,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1678810404] [2021-11-12 23:23:42,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:23:42,522 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:23:42,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:23:42,523 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:23:42,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:23:46,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:23:46,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 1894 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-12 23:23:46,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:23:47,064 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 23:23:48,299 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-12 23:23:48,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:23:49,467 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 23:23:49,866 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-12 23:23:49,866 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:23:49,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1678810404] [2021-11-12 23:23:49,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1678810404] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:23:49,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:23:49,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 19 [2021-11-12 23:23:49,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848305331] [2021-11-12 23:23:49,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:23:49,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 23:23:49,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:23:49,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 23:23:49,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-11-12 23:23:49,869 INFO L87 Difference]: Start difference. First operand 134 states and 176 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 10 states have internal predecessors, (48), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2021-11-12 23:23:50,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:23:50,202 INFO L93 Difference]: Finished difference Result 263 states and 347 transitions. [2021-11-12 23:23:50,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 23:23:50,204 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 10 states have internal predecessors, (48), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 96 [2021-11-12 23:23:50,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:23:50,206 INFO L225 Difference]: With dead ends: 263 [2021-11-12 23:23:50,207 INFO L226 Difference]: Without dead ends: 147 [2021-11-12 23:23:50,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 174 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 23:23:50,209 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 37 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 170.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.85ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 194.57ms IncrementalHoareTripleChecker+Time [2021-11-12 23:23:50,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 654 Invalid, 61 Unknown, 0 Unchecked, 4.85ms Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 35 Unchecked, 194.57ms Time] [2021-11-12 23:23:50,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-11-12 23:23:50,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2021-11-12 23:23:50,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 98 states have (on average 1.2040816326530612) internal successors, (118), 100 states have internal predecessors, (118), 35 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (39), 34 states have call predecessors, (39), 34 states have call successors, (39) [2021-11-12 23:23:50,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 192 transitions. [2021-11-12 23:23:50,227 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 192 transitions. Word has length 96 [2021-11-12 23:23:50,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:23:50,228 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 192 transitions. [2021-11-12 23:23:50,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 10 states have internal predecessors, (48), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2021-11-12 23:23:50,228 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 192 transitions. [2021-11-12 23:23:50,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-12 23:23:50,237 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:23:50,238 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:23:50,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:23:50,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:23:50,439 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:23:50,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:23:50,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1159749218, now seen corresponding path program 1 times [2021-11-12 23:23:50,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:23:50,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1194236094] [2021-11-12 23:23:50,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:23:50,443 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:23:50,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:23:50,444 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:23:50,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:23:54,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:23:54,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 1891 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:23:54,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:23:54,895 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-12 23:23:54,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:23:55,161 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-11-12 23:23:55,161 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:23:55,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1194236094] [2021-11-12 23:23:55,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1194236094] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:23:55,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:23:55,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-12 23:23:55,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555760149] [2021-11-12 23:23:55,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:23:55,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:23:55,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:23:55,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:23:55,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:23:55,164 INFO L87 Difference]: Start difference. First operand 147 states and 192 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-12 23:23:55,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:23:55,241 INFO L93 Difference]: Finished difference Result 266 states and 359 transitions. [2021-11-12 23:23:55,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:23:55,242 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 96 [2021-11-12 23:23:55,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:23:55,244 INFO L225 Difference]: With dead ends: 266 [2021-11-12 23:23:55,244 INFO L226 Difference]: Without dead ends: 153 [2021-11-12 23:23:55,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 188 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 23:23:55,246 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 20 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.76ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.62ms IncrementalHoareTripleChecker+Time [2021-11-12 23:23:55,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 502 Invalid, 16 Unknown, 0 Unchecked, 2.76ms Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 46.62ms Time] [2021-11-12 23:23:55,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-12 23:23:55,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 141. [2021-11-12 23:23:55,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 93 states have (on average 1.2043010752688172) internal successors, (112), 94 states have internal predecessors, (112), 35 states have call successors, (35), 12 states have call predecessors, (35), 12 states have return successors, (38), 34 states have call predecessors, (38), 34 states have call successors, (38) [2021-11-12 23:23:55,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 185 transitions. [2021-11-12 23:23:55,263 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 185 transitions. Word has length 96 [2021-11-12 23:23:55,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:23:55,264 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 185 transitions. [2021-11-12 23:23:55,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-12 23:23:55,264 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 185 transitions. [2021-11-12 23:23:55,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-12 23:23:55,266 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:23:55,267 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:23:55,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:23:55,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:23:55,489 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:23:55,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:23:55,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1516857828, now seen corresponding path program 1 times [2021-11-12 23:23:55,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:23:55,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1904335492] [2021-11-12 23:23:55,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:23:55,494 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:23:55,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:23:55,495 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:23:55,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:23:59,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:23:59,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 1903 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:23:59,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:00,499 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-12 23:24:00,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:01,152 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-11-12 23:24:01,152 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:24:01,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1904335492] [2021-11-12 23:24:01,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1904335492] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:24:01,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:24:01,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-11-12 23:24:01,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117182585] [2021-11-12 23:24:01,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:24:01,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:24:01,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:24:01,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:24:01,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:24:01,155 INFO L87 Difference]: Start difference. First operand 141 states and 185 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-12 23:24:03,380 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:24:05,399 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:24:06,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:24:06,790 INFO L93 Difference]: Finished difference Result 272 states and 372 transitions. [2021-11-12 23:24:06,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:24:06,794 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 100 [2021-11-12 23:24:06,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:24:06,796 INFO L225 Difference]: With dead ends: 272 [2021-11-12 23:24:06,796 INFO L226 Difference]: Without dead ends: 161 [2021-11-12 23:24:06,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 192 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:24:06,798 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 42 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5245.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.73ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 5464.82ms IncrementalHoareTripleChecker+Time [2021-11-12 23:24:06,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 587 Invalid, 131 Unknown, 0 Unchecked, 7.73ms Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 2 Unknown, 43 Unchecked, 5464.82ms Time] [2021-11-12 23:24:06,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-11-12 23:24:06,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 150. [2021-11-12 23:24:06,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 102 states have (on average 1.2156862745098038) internal successors, (124), 103 states have internal predecessors, (124), 35 states have call successors, (35), 12 states have call predecessors, (35), 12 states have return successors, (38), 34 states have call predecessors, (38), 34 states have call successors, (38) [2021-11-12 23:24:06,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 197 transitions. [2021-11-12 23:24:06,825 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 197 transitions. Word has length 100 [2021-11-12 23:24:06,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:24:06,826 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 197 transitions. [2021-11-12 23:24:06,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-12 23:24:06,827 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 197 transitions. [2021-11-12 23:24:06,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-12 23:24:06,828 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:24:06,829 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:24:06,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:24:07,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:24:07,042 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:24:07,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:24:07,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1091929630, now seen corresponding path program 1 times [2021-11-12 23:24:07,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:24:07,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1104660320] [2021-11-12 23:24:07,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:07,046 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:24:07,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:24:07,047 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:24:07,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:24:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:10,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 1900 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-12 23:24:11,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:13,090 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:24:13,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:15,413 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-12 23:24:15,413 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:24:15,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1104660320] [2021-11-12 23:24:15,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1104660320] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:24:15,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:24:15,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 19 [2021-11-12 23:24:15,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878446335] [2021-11-12 23:24:15,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:24:15,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 23:24:15,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:24:15,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 23:24:15,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-11-12 23:24:15,415 INFO L87 Difference]: Start difference. First operand 150 states and 197 transitions. Second operand has 12 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-12 23:24:17,629 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:24:19,640 WARN L515 Checker$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 23:24:23,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:24:23,637 INFO L93 Difference]: Finished difference Result 280 states and 385 transitions. [2021-11-12 23:24:23,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 23:24:23,641 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 100 [2021-11-12 23:24:23,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:24:23,643 INFO L225 Difference]: With dead ends: 280 [2021-11-12 23:24:23,643 INFO L226 Difference]: Without dead ends: 159 [2021-11-12 23:24:23,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 180 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2021-11-12 23:24:23,645 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 38 mSDsluCounter, 1353 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6162.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1517 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.49ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 313 IncrementalHoareTripleChecker+Unchecked, 6479.70ms IncrementalHoareTripleChecker+Time [2021-11-12 23:24:23,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 1517 Invalid, 551 Unknown, 0 Unchecked, 15.49ms Time], IncrementalHoareTripleChecker [2 Valid, 234 Invalid, 2 Unknown, 313 Unchecked, 6479.70ms Time] [2021-11-12 23:24:23,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-12 23:24:23,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 155. [2021-11-12 23:24:23,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 106 states have (on average 1.1886792452830188) internal successors, (126), 108 states have internal predecessors, (126), 35 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (43), 34 states have call predecessors, (43), 34 states have call successors, (43) [2021-11-12 23:24:23,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 204 transitions. [2021-11-12 23:24:23,665 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 204 transitions. Word has length 100 [2021-11-12 23:24:23,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:24:23,665 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 204 transitions. [2021-11-12 23:24:23,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-12 23:24:23,666 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 204 transitions. [2021-11-12 23:24:23,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-12 23:24:23,667 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:24:23,668 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:24:23,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:24:23,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:24:23,877 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:24:23,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:24:23,878 INFO L85 PathProgramCache]: Analyzing trace with hash 391599962, now seen corresponding path program 1 times [2021-11-12 23:24:23,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:24:23,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [198743484] [2021-11-12 23:24:23,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:23,881 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:24:23,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:24:23,882 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:24:23,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:24:27,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:27,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 1901 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:24:27,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:28,178 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-12 23:24:28,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:28,424 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-11-12 23:24:28,424 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:24:28,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [198743484] [2021-11-12 23:24:28,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [198743484] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:24:28,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:24:28,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-12 23:24:28,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869356516] [2021-11-12 23:24:28,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:24:28,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:24:28,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:24:28,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:24:28,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:24:28,427 INFO L87 Difference]: Start difference. First operand 155 states and 204 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-12 23:24:28,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:24:28,513 INFO L93 Difference]: Finished difference Result 284 states and 383 transitions. [2021-11-12 23:24:28,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:24:28,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 100 [2021-11-12 23:24:28,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:24:28,518 INFO L225 Difference]: With dead ends: 284 [2021-11-12 23:24:28,518 INFO L226 Difference]: Without dead ends: 159 [2021-11-12 23:24:28,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 196 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 23:24:28,520 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 34 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.93ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.05ms IncrementalHoareTripleChecker+Time [2021-11-12 23:24:28,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 493 Invalid, 13 Unknown, 0 Unchecked, 1.93ms Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 55.05ms Time] [2021-11-12 23:24:28,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-12 23:24:28,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 151. [2021-11-12 23:24:28,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 102 states have (on average 1.1666666666666667) internal successors, (119), 104 states have internal predecessors, (119), 35 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (43), 34 states have call predecessors, (43), 34 states have call successors, (43) [2021-11-12 23:24:28,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 197 transitions. [2021-11-12 23:24:28,533 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 197 transitions. Word has length 100 [2021-11-12 23:24:28,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:24:28,533 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 197 transitions. [2021-11-12 23:24:28,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-12 23:24:28,534 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 197 transitions. [2021-11-12 23:24:28,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-12 23:24:28,535 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:24:28,535 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:24:28,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:24:28,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:24:28,757 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:24:28,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:24:28,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1345540120, now seen corresponding path program 1 times [2021-11-12 23:24:28,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:24:28,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [214470265] [2021-11-12 23:24:28,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:28,763 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:24:28,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:24:28,765 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:24:28,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:24:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:32,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 1898 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:24:32,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:33,205 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-12 23:24:33,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:33,684 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-12 23:24:33,685 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:24:33,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [214470265] [2021-11-12 23:24:33,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [214470265] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:24:33,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:24:33,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 10 [2021-11-12 23:24:33,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907596260] [2021-11-12 23:24:33,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:24:33,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-12 23:24:33,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:24:33,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-12 23:24:33,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:24:33,687 INFO L87 Difference]: Start difference. First operand 151 states and 197 transitions. Second operand has 9 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-12 23:24:34,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:24:34,205 INFO L93 Difference]: Finished difference Result 283 states and 380 transitions. [2021-11-12 23:24:34,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-12 23:24:34,206 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 100 [2021-11-12 23:24:34,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:24:34,208 INFO L225 Difference]: With dead ends: 283 [2021-11-12 23:24:34,208 INFO L226 Difference]: Without dead ends: 160 [2021-11-12 23:24:34,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:24:34,210 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 12 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 366.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.35ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 417.30ms IncrementalHoareTripleChecker+Time [2021-11-12 23:24:34,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1213 Invalid, 142 Unknown, 0 Unchecked, 5.35ms Time], IncrementalHoareTripleChecker [3 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 417.30ms Time] [2021-11-12 23:24:34,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-12 23:24:34,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 151. [2021-11-12 23:24:34,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 102 states have (on average 1.1666666666666667) internal successors, (119), 104 states have internal predecessors, (119), 35 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (43), 34 states have call predecessors, (43), 34 states have call successors, (43) [2021-11-12 23:24:34,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 197 transitions. [2021-11-12 23:24:34,221 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 197 transitions. Word has length 100 [2021-11-12 23:24:34,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:24:34,222 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 197 transitions. [2021-11-12 23:24:34,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-12 23:24:34,222 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 197 transitions. [2021-11-12 23:24:34,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-12 23:24:34,224 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:24:34,224 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:24:34,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:24:34,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:24:34,444 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:24:34,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:24:34,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1495029229, now seen corresponding path program 1 times [2021-11-12 23:24:34,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:24:34,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1192627439] [2021-11-12 23:24:34,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:34,448 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:24:34,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:24:34,448 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:24:34,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:24:38,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:38,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 1902 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:24:38,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:38,868 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-12 23:24:38,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:39,331 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-12 23:24:39,331 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:24:39,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1192627439] [2021-11-12 23:24:39,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1192627439] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:24:39,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:24:39,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2021-11-12 23:24:39,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776973832] [2021-11-12 23:24:39,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:24:39,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:24:39,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:24:39,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:24:39,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:24:39,333 INFO L87 Difference]: Start difference. First operand 151 states and 197 transitions. Second operand has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-12 23:24:39,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:24:39,640 INFO L93 Difference]: Finished difference Result 266 states and 348 transitions. [2021-11-12 23:24:39,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:24:39,641 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 102 [2021-11-12 23:24:39,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:24:39,643 INFO L225 Difference]: With dead ends: 266 [2021-11-12 23:24:39,643 INFO L226 Difference]: Without dead ends: 151 [2021-11-12 23:24:39,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:24:39,644 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 65 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 228.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.58ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 271.34ms IncrementalHoareTripleChecker+Time [2021-11-12 23:24:39,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 554 Invalid, 70 Unknown, 0 Unchecked, 2.58ms Time], IncrementalHoareTripleChecker [26 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 271.34ms Time] [2021-11-12 23:24:39,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-12 23:24:39,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2021-11-12 23:24:39,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 102 states have (on average 1.1666666666666667) internal successors, (119), 104 states have internal predecessors, (119), 35 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (42), 34 states have call predecessors, (42), 34 states have call successors, (42) [2021-11-12 23:24:39,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 196 transitions. [2021-11-12 23:24:39,656 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 196 transitions. Word has length 102 [2021-11-12 23:24:39,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:24:39,657 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 196 transitions. [2021-11-12 23:24:39,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-12 23:24:39,657 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 196 transitions. [2021-11-12 23:24:39,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-12 23:24:39,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:24:39,659 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:24:39,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:24:39,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:24:39,881 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:24:39,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:24:39,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1804103816, now seen corresponding path program 1 times [2021-11-12 23:24:39,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:24:39,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [659613145] [2021-11-12 23:24:39,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:39,886 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:24:39,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:24:39,888 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:24:39,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 23:24:43,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:43,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 1915 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:24:44,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:44,427 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-12 23:24:44,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:44,868 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-12 23:24:44,868 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:24:44,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [659613145] [2021-11-12 23:24:44,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [659613145] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:24:44,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:24:44,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 8 [2021-11-12 23:24:44,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202329007] [2021-11-12 23:24:44,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:24:44,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:24:44,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:24:44,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:24:44,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:24:44,870 INFO L87 Difference]: Start difference. First operand 151 states and 196 transitions. Second operand has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) [2021-11-12 23:24:45,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:24:45,568 INFO L93 Difference]: Finished difference Result 256 states and 333 transitions. [2021-11-12 23:24:45,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 23:24:45,569 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) Word has length 108 [2021-11-12 23:24:45,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:24:45,571 INFO L225 Difference]: With dead ends: 256 [2021-11-12 23:24:45,571 INFO L226 Difference]: Without dead ends: 148 [2021-11-12 23:24:45,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:24:45,573 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 84 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 562.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.36ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 631.04ms IncrementalHoareTripleChecker+Time [2021-11-12 23:24:45,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 960 Invalid, 134 Unknown, 0 Unchecked, 4.36ms Time], IncrementalHoareTripleChecker [41 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 631.04ms Time] [2021-11-12 23:24:45,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-12 23:24:45,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-11-12 23:24:45,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 100 states have (on average 1.16) internal successors, (116), 101 states have internal predecessors, (116), 35 states have call successors, (35), 12 states have call predecessors, (35), 12 states have return successors, (39), 34 states have call predecessors, (39), 34 states have call successors, (39) [2021-11-12 23:24:45,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 190 transitions. [2021-11-12 23:24:45,584 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 190 transitions. Word has length 108 [2021-11-12 23:24:45,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:24:45,584 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 190 transitions. [2021-11-12 23:24:45,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) [2021-11-12 23:24:45,585 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 190 transitions. [2021-11-12 23:24:45,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-12 23:24:45,587 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:24:45,587 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:24:45,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:24:45,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:24:45,809 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:24:45,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:24:45,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1669007394, now seen corresponding path program 1 times [2021-11-12 23:24:45,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:24:45,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1576419759] [2021-11-12 23:24:45,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:45,813 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:24:45,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:24:45,813 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:24:45,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 23:24:50,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:50,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 1941 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-12 23:24:50,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:54,048 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 81 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-12 23:24:54,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:59,932 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:24:59,932 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 40 treesize of output 43 [2021-11-12 23:24:59,983 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-12 23:24:59,983 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 39 treesize of output 34 [2021-11-12 23:25:00,186 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 40 proven. 10 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-12 23:25:00,186 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:25:00,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1576419759] [2021-11-12 23:25:00,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1576419759] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:25:00,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1187015651] [2021-11-12 23:25:00,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:00,187 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:25:00,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:25:00,188 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:25:00,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-12 23:25:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:10,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 1941 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-12 23:25:10,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:10,963 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-12 23:25:10,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:11,571 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-12 23:25:11,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1187015651] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:25:11,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:25:11,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [20, 15, 10] total 37 [2021-11-12 23:25:11,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682186732] [2021-11-12 23:25:11,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:25:11,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:25:11,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:25:11,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:25:11,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1228, Unknown=0, NotChecked=0, Total=1332 [2021-11-12 23:25:11,574 INFO L87 Difference]: Start difference. First operand 148 states and 190 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-11-12 23:25:11,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:25:11,939 INFO L93 Difference]: Finished difference Result 160 states and 206 transitions. [2021-11-12 23:25:11,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 23:25:11,939 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 120 [2021-11-12 23:25:11,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:25:11,942 INFO L225 Difference]: With dead ends: 160 [2021-11-12 23:25:11,942 INFO L226 Difference]: Without dead ends: 158 [2021-11-12 23:25:11,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 437 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=114, Invalid=1368, Unknown=0, NotChecked=0, Total=1482 [2021-11-12 23:25:11,944 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 23 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 137.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.75ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 167.66ms IncrementalHoareTripleChecker+Time [2021-11-12 23:25:11,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 1134 Invalid, 54 Unknown, 0 Unchecked, 3.75ms Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 167.66ms Time] [2021-11-12 23:25:11,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-11-12 23:25:11,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 157. [2021-11-12 23:25:11,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 106 states have (on average 1.150943396226415) internal successors, (122), 108 states have internal predecessors, (122), 36 states have call successors, (36), 13 states have call predecessors, (36), 14 states have return successors, (45), 35 states have call predecessors, (45), 35 states have call successors, (45) [2021-11-12 23:25:11,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 203 transitions. [2021-11-12 23:25:11,959 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 203 transitions. Word has length 120 [2021-11-12 23:25:11,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:25:11,959 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 203 transitions. [2021-11-12 23:25:11,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-11-12 23:25:11,960 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 203 transitions. [2021-11-12 23:25:11,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-12 23:25:11,962 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:25:11,963 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:25:11,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-12 23:25:12,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 23:25:12,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:25:12,379 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:25:12,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:25:12,379 INFO L85 PathProgramCache]: Analyzing trace with hash 638389796, now seen corresponding path program 1 times [2021-11-12 23:25:12,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:25:12,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [314427609] [2021-11-12 23:25:12,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:12,383 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:25:12,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:25:12,383 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:25:12,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 23:25:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:16,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 1947 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-12 23:25:16,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:20,247 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 85 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-12 23:25:20,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:24,812 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:25:24,813 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 40 treesize of output 43 [2021-11-12 23:25:24,864 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-12 23:25:24,864 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 39 treesize of output 34 [2021-11-12 23:25:25,054 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 44 proven. 10 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-12 23:25:25,054 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:25:25,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [314427609] [2021-11-12 23:25:25,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [314427609] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:25:25,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1930013321] [2021-11-12 23:25:25,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:25,056 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:25:25,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:25:25,059 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:25:25,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-12 23:25:34,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:34,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 1947 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-12 23:25:34,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:37,049 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 85 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-12 23:25:37,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:40,520 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:25:40,520 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 40 treesize of output 43 [2021-11-12 23:25:40,570 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-12 23:25:40,571 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 39 treesize of output 34 [2021-11-12 23:25:40,760 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 44 proven. 10 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-12 23:25:40,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1930013321] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:25:40,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373940873] [2021-11-12 23:25:40,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:25:40,761 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:25:40,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:25:40,763 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:25:40,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-12 23:25:42,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:25:42,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 1947 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-12 23:25:42,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:25:44,656 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 85 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-12 23:25:44,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:25:48,100 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:25:48,101 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 40 treesize of output 43 [2021-11-12 23:25:48,143 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-12 23:25:48,143 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 39 treesize of output 34 [2021-11-12 23:25:48,360 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 44 proven. 10 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-12 23:25:48,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373940873] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:25:48,361 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 23:25:48,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 16, 11, 16, 11] total 23 [2021-11-12 23:25:48,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853805304] [2021-11-12 23:25:48,362 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 23:25:48,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-12 23:25:48,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:25:48,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-12 23:25:48,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:25:48,364 INFO L87 Difference]: Start difference. First operand 157 states and 203 transitions. Second operand has 23 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 7 states have call successors, (28), 4 states have call predecessors, (28), 5 states have return successors, (25), 6 states have call predecessors, (25), 6 states have call successors, (25) [2021-11-12 23:25:50,587 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:25:52,596 WARN L515 Checker$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 23:25:54,611 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:25:56,625 WARN L515 Checker$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 23:25:58,640 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:26:00,654 WARN L515 Checker$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 23:26:02,668 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:26:04,683 WARN L515 Checker$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 23:26:12,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:26:12,253 INFO L93 Difference]: Finished difference Result 289 states and 376 transitions. [2021-11-12 23:26:12,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-12 23:26:12,254 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 7 states have call successors, (28), 4 states have call predecessors, (28), 5 states have return successors, (25), 6 states have call predecessors, (25), 6 states have call successors, (25) Word has length 124 [2021-11-12 23:26:12,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:26:12,256 INFO L225 Difference]: With dead ends: 289 [2021-11-12 23:26:12,256 INFO L226 Difference]: Without dead ends: 206 [2021-11-12 23:26:12,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 764 GetRequests, 710 SyntacticMatches, 14 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=288, Invalid=1434, Unknown=0, NotChecked=0, Total=1722 [2021-11-12 23:26:12,259 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 192 mSDsluCounter, 2009 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 75 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20034.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 2190 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.27ms SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 179 IncrementalHoareTripleChecker+Unchecked, 20584.77ms IncrementalHoareTripleChecker+Time [2021-11-12 23:26:12,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 2190 Invalid, 946 Unknown, 0 Unchecked, 14.27ms Time], IncrementalHoareTripleChecker [75 Valid, 684 Invalid, 8 Unknown, 179 Unchecked, 20584.77ms Time] [2021-11-12 23:26:12,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-11-12 23:26:12,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 183. [2021-11-12 23:26:12,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 127 states have (on average 1.1574803149606299) internal successors, (147), 129 states have internal predecessors, (147), 39 states have call successors, (39), 15 states have call predecessors, (39), 16 states have return successors, (55), 38 states have call predecessors, (55), 38 states have call successors, (55) [2021-11-12 23:26:12,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 241 transitions. [2021-11-12 23:26:12,278 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 241 transitions. Word has length 124 [2021-11-12 23:26:12,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:26:12,279 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 241 transitions. [2021-11-12 23:26:12,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 7 states have call successors, (28), 4 states have call predecessors, (28), 5 states have return successors, (25), 6 states have call predecessors, (25), 6 states have call successors, (25) [2021-11-12 23:26:12,280 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 241 transitions. [2021-11-12 23:26:12,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-12 23:26:12,282 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:26:12,282 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:26:12,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-12 23:26:12,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-12 23:26:12,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-12 23:26:12,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:26:12,905 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:26:12,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:26:12,906 INFO L85 PathProgramCache]: Analyzing trace with hash -641473882, now seen corresponding path program 2 times [2021-11-12 23:26:12,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:26:12,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [607275410] [2021-11-12 23:26:12,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:26:12,910 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:26:12,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:26:12,911 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:26:12,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30802d1-a39e-4f16-a18d-c046d3b88215/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process