./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_move_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_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/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_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/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_df01171b-ab84-492b-ab77-df25d763e545/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 ba6eb72b2235d93ac0dcdd3f0e672793184c4cf65112c581319750a174c5bca8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:42:03,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:42:03,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:42:03,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:42:03,759 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:42:03,761 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:42:03,763 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:42:03,766 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:42:03,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:42:03,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:42:03,772 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:42:03,774 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:42:03,775 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:42:03,777 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:42:03,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:42:03,781 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:42:03,783 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:42:03,784 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:42:03,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:42:03,790 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:42:03,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:42:03,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:42:03,797 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:42:03,798 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:42:03,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:42:03,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:42:03,805 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:42:03,806 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:42:03,807 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:42:03,809 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:42:03,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:42:03,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:42:03,813 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:42:03,814 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:42:03,816 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:42:03,817 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:42:03,818 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:42:03,819 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:42:03,819 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:42:03,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:42:03,822 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:42:03,823 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-13 01:42:03,850 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:42:03,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:42:03,852 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:42:03,852 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:42:03,853 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:42:03,853 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:42:03,853 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:42:03,854 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 01:42:03,854 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:42:03,854 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:42:03,854 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 01:42:03,855 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 01:42:03,855 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:42:03,855 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 01:42:03,856 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 01:42:03,856 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 01:42:03,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:42:03,857 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 01:42:03,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:42:03,858 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:42:03,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:42:03,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:42:03,859 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:42:03,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:42:03,860 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:42:03,860 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:42:03,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:42:03,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:42:03,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:42:03,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:42:03,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:42:03,862 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:42:03,862 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 01:42:03,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 01:42:03,863 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:42:03,863 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:42:03,863 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:42:03,864 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_df01171b-ab84-492b-ab77-df25d763e545/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba6eb72b2235d93ac0dcdd3f0e672793184c4cf65112c581319750a174c5bca8 [2021-11-13 01:42:04,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:42:04,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:42:04,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:42:04,296 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:42:04,297 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:42:04,300 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i [2021-11-13 01:42:04,415 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/data/aeb230fb6/7c92670b29bc4fe6a9dbf9496ba562d2/FLAG465a9a3e9 [2021-11-13 01:42:05,512 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:42:05,514 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i [2021-11-13 01:42:05,596 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/data/aeb230fb6/7c92670b29bc4fe6a9dbf9496ba562d2/FLAG465a9a3e9 [2021-11-13 01:42:05,844 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/data/aeb230fb6/7c92670b29bc4fe6a9dbf9496ba562d2 [2021-11-13 01:42:05,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:42:05,850 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:42:05,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:42:05,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:42:05,856 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:42:05,856 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:42:05" (1/1) ... [2021-11-13 01:42:05,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@720a3552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:05, skipping insertion in model container [2021-11-13 01:42:05,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:42:05" (1/1) ... [2021-11-13 01:42:05,869 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:42:06,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:42:06,512 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_df01171b-ab84-492b-ab77-df25d763e545/sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i[4493,4506] [2021-11-13 01:42:06,522 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_df01171b-ab84-492b-ab77-df25d763e545/sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i[4553,4566] [2021-11-13 01:42:06,560 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:42:06,568 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:42:07,967 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:07,969 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:07,969 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:07,970 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:07,977 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:07,999 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:08,000 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:08,002 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:08,003 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:08,006 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:08,007 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:08,008 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:08,009 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:08,769 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:42:08,771 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:42:08,772 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:42:08,774 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:42:08,776 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:42:08,778 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:42:08,779 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:42:08,780 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:42:08,781 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:42:08,782 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:42:09,067 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:42:09,493 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:09,496 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:09,550 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:09,556 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:09,570 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:09,570 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:09,598 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:09,601 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:09,602 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:09,602 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:09,603 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:09,603 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:09,604 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:09,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:42:09,745 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) [2021-11-13 01:42:09,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2be6d54b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:09, skipping insertion in model container [2021-11-13 01:42:09,746 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:42:09,746 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 01:42:09,750 INFO L158 Benchmark]: Toolchain (without parser) took 3897.19ms. Allocated memory was 107.0MB in the beginning and 146.8MB in the end (delta: 39.8MB). Free memory was 79.7MB in the beginning and 77.3MB in the end (delta: 2.4MB). Peak memory consumption was 46.0MB. Max. memory is 16.1GB. [2021-11-13 01:42:09,750 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 107.0MB. Free memory is still 84.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:42:09,752 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3894.35ms. Allocated memory was 107.0MB in the beginning and 146.8MB in the end (delta: 39.8MB). Free memory was 79.4MB in the beginning and 77.3MB in the end (delta: 2.1MB). Peak memory consumption was 46.0MB. Max. memory is 16.1GB. [2021-11-13 01:42:09,755 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 107.0MB. Free memory is still 84.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3894.35ms. Allocated memory was 107.0MB in the beginning and 146.8MB in the end (delta: 39.8MB). Free memory was 79.4MB in the beginning and 77.3MB in the end (delta: 2.1MB). Peak memory consumption was 46.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7051]: 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_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/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_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/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_df01171b-ab84-492b-ab77-df25d763e545/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 ba6eb72b2235d93ac0dcdd3f0e672793184c4cf65112c581319750a174c5bca8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:42:12,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:42:12,538 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:42:12,592 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:42:12,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:42:12,598 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:42:12,601 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:42:12,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:42:12,615 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:42:12,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:42:12,628 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:42:12,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:42:12,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:42:12,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:42:12,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:42:12,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:42:12,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:42:12,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:42:12,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:42:12,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:42:12,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:42:12,659 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:42:12,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:42:12,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:42:12,667 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:42:12,668 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:42:12,668 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:42:12,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:42:12,671 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:42:12,672 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:42:12,673 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:42:12,674 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:42:12,675 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:42:12,677 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:42:12,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:42:12,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:42:12,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:42:12,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:42:12,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:42:12,695 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:42:12,696 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:42:12,703 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-13 01:42:12,759 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:42:12,760 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:42:12,762 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:42:12,762 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:42:12,763 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:42:12,763 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:42:12,763 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:42:12,763 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:42:12,764 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:42:12,764 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:42:12,768 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:42:12,768 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:42:12,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:42:12,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:42:12,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:42:12,769 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:42:12,770 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 01:42:12,770 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 01:42:12,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:42:12,770 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:42:12,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:42:12,771 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:42:12,771 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 01:42:12,772 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:42:12,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:42:12,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:42:12,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:42:12,773 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:42:12,773 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 01:42:12,773 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 01:42:12,774 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:42:12,774 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:42:12,774 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:42:12,775 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_df01171b-ab84-492b-ab77-df25d763e545/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba6eb72b2235d93ac0dcdd3f0e672793184c4cf65112c581319750a174c5bca8 [2021-11-13 01:42:13,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:42:13,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:42:13,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:42:13,258 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:42:13,259 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:42:13,262 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i [2021-11-13 01:42:13,355 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/data/58f7e350b/cf827800960746918ad27b5a5ede71c1/FLAGe28c39fbb [2021-11-13 01:42:14,573 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:42:14,575 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i [2021-11-13 01:42:14,637 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/data/58f7e350b/cf827800960746918ad27b5a5ede71c1/FLAGe28c39fbb [2021-11-13 01:42:14,794 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/data/58f7e350b/cf827800960746918ad27b5a5ede71c1 [2021-11-13 01:42:14,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:42:14,799 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:42:14,801 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:42:14,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:42:14,806 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:42:14,807 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:42:14" (1/1) ... [2021-11-13 01:42:14,809 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e9f14c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:14, skipping insertion in model container [2021-11-13 01:42:14,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:42:14" (1/1) ... [2021-11-13 01:42:14,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:42:14,986 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:42:15,432 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_df01171b-ab84-492b-ab77-df25d763e545/sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i[4493,4506] [2021-11-13 01:42:15,444 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_df01171b-ab84-492b-ab77-df25d763e545/sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i[4553,4566] [2021-11-13 01:42:15,492 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:42:15,503 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:42:17,515 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:17,518 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:17,519 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:17,520 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:17,522 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:17,552 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:17,554 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:17,558 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:17,560 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:17,565 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:17,566 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:17,569 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:17,570 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:18,277 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:42:18,279 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:42:18,280 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:42:18,282 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:42:18,284 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:42:18,285 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:42:18,286 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:42:18,287 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:42:18,288 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:42:18,289 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:42:18,550 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:42:19,051 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:19,052 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:19,081 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:19,082 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:19,089 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:19,090 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:19,109 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:19,110 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:19,111 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:19,111 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:19,112 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:19,113 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:19,113 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:19,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:42:19,212 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 01:42:19,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:42:19,376 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_df01171b-ab84-492b-ab77-df25d763e545/sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i[4493,4506] [2021-11-13 01:42:19,377 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_df01171b-ab84-492b-ab77-df25d763e545/sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i[4553,4566] [2021-11-13 01:42:19,379 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:42:19,380 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:42:19,448 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:19,449 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:19,449 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:19,450 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:19,451 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:19,465 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:19,466 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:19,467 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:19,468 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:19,469 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:19,471 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:19,472 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:19,472 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:19,524 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:42:19,526 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:42:19,527 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:42:19,529 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:42:19,531 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:42:19,531 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:42:19,535 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:42:19,536 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:42:19,537 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:42:19,538 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:42:19,606 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:42:19,782 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:19,783 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:19,813 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:19,814 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:19,819 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:19,820 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:19,837 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:19,839 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:19,840 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:19,840 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:19,841 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:19,842 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:19,842 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:19,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:42:19,934 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 01:42:19,966 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_df01171b-ab84-492b-ab77-df25d763e545/sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i[4493,4506] [2021-11-13 01:42:19,967 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_df01171b-ab84-492b-ab77-df25d763e545/sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i[4553,4566] [2021-11-13 01:42:19,969 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:42:19,971 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:42:20,023 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:20,023 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:20,024 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:20,025 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:20,026 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:20,035 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:20,035 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:20,037 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:20,037 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:20,041 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:20,042 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:20,043 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:20,043 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:20,088 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:42:20,090 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:42:20,091 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:42:20,092 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:42:20,093 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:42:20,094 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:42:20,095 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:42:20,095 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:42:20,097 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:42:20,097 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:42:20,128 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:42:20,275 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:20,276 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:20,285 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:20,286 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:20,289 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:20,290 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:20,301 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:20,302 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:20,303 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:20,303 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:20,303 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:20,304 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:20,304 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:42:20,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:42:21,010 INFO L208 MainTranslator]: Completed translation [2021-11-13 01:42:21,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:21 WrapperNode [2021-11-13 01:42:21,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:42:21,013 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 01:42:21,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 01:42:21,014 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 01:42:21,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:21" (1/1) ... [2021-11-13 01:42:21,223 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:21" (1/1) ... [2021-11-13 01:42:21,366 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 01:42:21,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 01:42:21,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 01:42:21,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 01:42:21,380 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:21" (1/1) ... [2021-11-13 01:42:21,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:21" (1/1) ... [2021-11-13 01:42:21,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:21" (1/1) ... [2021-11-13 01:42:21,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:21" (1/1) ... [2021-11-13 01:42:21,485 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:21" (1/1) ... [2021-11-13 01:42:21,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:21" (1/1) ... [2021-11-13 01:42:21,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:21" (1/1) ... [2021-11-13 01:42:21,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 01:42:21,572 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 01:42:21,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 01:42:21,577 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 01:42:21,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:21" (1/1) ... [2021-11-13 01:42:21,587 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:42:21,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:42:21,618 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 01:42:21,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 01:42:21,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-13 01:42:21,693 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-13 01:42:21,693 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-13 01:42:21,700 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 01:42:21,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 01:42:21,701 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-11-13 01:42:21,701 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-11-13 01:42:21,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 01:42:21,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 01:42:21,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 01:42:21,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 01:42:21,702 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-13 01:42:21,702 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-13 01:42:21,702 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-13 01:42:21,702 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-13 01:42:21,702 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-13 01:42:21,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 01:42:21,703 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 01:42:21,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 01:42:21,703 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-13 01:42:21,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-13 01:42:21,704 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-13 01:42:21,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 01:42:21,704 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-13 01:42:21,704 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-13 01:42:21,704 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-11-13 01:42:21,704 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-11-13 01:42:21,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 01:42:21,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 01:42:21,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-13 01:42:21,705 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-11-13 01:42:21,705 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-11-13 01:42:21,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 01:42:21,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-13 01:42:21,706 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 01:42:21,706 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 01:42:21,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-13 01:42:21,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 01:42:21,706 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-11-13 01:42:21,707 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-11-13 01:42:21,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 01:42:21,707 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-13 01:42:21,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-13 01:42:21,708 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-13 01:42:21,708 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-13 01:42:37,398 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 01:42:37,404 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-13 01:42:37,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:42:37 BoogieIcfgContainer [2021-11-13 01:42:37,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 01:42:37,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 01:42:37,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 01:42:37,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 01:42:37,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:42:14" (1/3) ... [2021-11-13 01:42:37,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f4c1152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:42:37, skipping insertion in model container [2021-11-13 01:42:37,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:42:21" (2/3) ... [2021-11-13 01:42:37,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f4c1152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:42:37, skipping insertion in model container [2021-11-13 01:42:37,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:42:37" (3/3) ... [2021-11-13 01:42:37,421 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_move_harness.i [2021-11-13 01:42:37,428 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 01:42:37,428 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 01:42:37,522 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 01:42:37,532 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 [2021-11-13 01:42:37,533 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 01:42:37,563 INFO L276 IsEmpty]: Start isEmpty. Operand has 122 states, 75 states have (on average 1.1733333333333333) internal successors, (88), 75 states have internal predecessors, (88), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-11-13 01:42:37,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-13 01:42:37,588 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:37,590 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:42:37,593 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:42:37,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:37,600 INFO L85 PathProgramCache]: Analyzing trace with hash 133529182, now seen corresponding path program 1 times [2021-11-13 01:42:37,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:42:37,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [442701120] [2021-11-13 01:42:37,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:37,632 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:42:37,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:42:37,636 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:42:37,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 01:42:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:43,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 1780 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 01:42:43,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:42:43,570 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-13 01:42:43,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:42:44,056 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2021-11-13 01:42:44,057 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:42:44,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [442701120] [2021-11-13 01:42:44,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [442701120] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:42:44,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:42:44,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-13 01:42:44,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260417189] [2021-11-13 01:42:44,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:44,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 01:42:44,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:42:44,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 01:42:44,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 01:42:44,134 INFO L87 Difference]: Start difference. First operand has 122 states, 75 states have (on average 1.1733333333333333) internal successors, (88), 75 states have internal predecessors, (88), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 01:42:44,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:44,196 INFO L93 Difference]: Finished difference Result 236 states and 310 transitions. [2021-11-13 01:42:44,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 01:42:44,199 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 135 [2021-11-13 01:42:44,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:44,216 INFO L225 Difference]: With dead ends: 236 [2021-11-13 01:42:44,217 INFO L226 Difference]: Without dead ends: 116 [2021-11-13 01:42:44,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 01:42:44,230 INFO L933 BasicCegarLoop]: 148 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, 148 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.80ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:44,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 5.80ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 01:42:44,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-11-13 01:42:44,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-11-13 01:42:44,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 69 states have (on average 1.144927536231884) internal successors, (79), 70 states have internal predecessors, (79), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-13 01:42:44,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 142 transitions. [2021-11-13 01:42:44,316 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 142 transitions. Word has length 135 [2021-11-13 01:42:44,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:44,316 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 142 transitions. [2021-11-13 01:42:44,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-13 01:42:44,317 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 142 transitions. [2021-11-13 01:42:44,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-13 01:42:44,335 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:44,335 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:42:44,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 01:42:44,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:42:44,551 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:42:44,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:44,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1119368280, now seen corresponding path program 1 times [2021-11-13 01:42:44,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:42:44,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [114922841] [2021-11-13 01:42:44,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:44,569 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:42:44,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:42:44,572 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:42:44,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 01:42:49,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:49,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 1797 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:42:49,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:42:50,575 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2021-11-13 01:42:50,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:42:51,227 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2021-11-13 01:42:51,227 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:42:51,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [114922841] [2021-11-13 01:42:51,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [114922841] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:42:51,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:42:51,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-13 01:42:51,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110835403] [2021-11-13 01:42:51,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:51,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:42:51,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:42:51,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:42:51,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:42:51,232 INFO L87 Difference]: Start difference. First operand 116 states and 142 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-13 01:42:51,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:51,349 INFO L93 Difference]: Finished difference Result 224 states and 275 transitions. [2021-11-13 01:42:51,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:42:51,350 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 141 [2021-11-13 01:42:51,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:51,353 INFO L225 Difference]: With dead ends: 224 [2021-11-13 01:42:51,354 INFO L226 Difference]: Without dead ends: 120 [2021-11-13 01:42:51,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:42:51,357 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 2 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.11ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.10ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:51,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 556 Invalid, 11 Unknown, 0 Unchecked, 7.11ms Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 55.10ms Time] [2021-11-13 01:42:51,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-11-13 01:42:51,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-11-13 01:42:51,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 72 states have (on average 1.1388888888888888) internal successors, (82), 73 states have internal predecessors, (82), 32 states have call successors, (32), 14 states have call predecessors, (32), 15 states have return successors, (32), 32 states have call predecessors, (32), 31 states have call successors, (32) [2021-11-13 01:42:51,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 146 transitions. [2021-11-13 01:42:51,377 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 146 transitions. Word has length 141 [2021-11-13 01:42:51,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:51,380 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 146 transitions. [2021-11-13 01:42:51,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-13 01:42:51,380 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 146 transitions. [2021-11-13 01:42:51,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-13 01:42:51,383 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:51,384 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:42:51,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 01:42:51,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:42:51,598 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:42:51,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:51,599 INFO L85 PathProgramCache]: Analyzing trace with hash 621379416, now seen corresponding path program 1 times [2021-11-13 01:42:51,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:42:51,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [537711602] [2021-11-13 01:42:51,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:51,608 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:42:51,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:42:51,609 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:42:51,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 01:42:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:56,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 1811 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:42:56,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:42:56,945 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-13 01:42:56,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:42:57,706 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-11-13 01:42:57,706 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:42:57,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [537711602] [2021-11-13 01:42:57,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [537711602] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:42:57,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:42:57,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-13 01:42:57,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540248032] [2021-11-13 01:42:57,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:57,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:42:57,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:42:57,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:42:57,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-13 01:42:57,709 INFO L87 Difference]: Start difference. First operand 120 states and 146 transitions. Second operand has 6 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-13 01:42:58,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:58,083 INFO L93 Difference]: Finished difference Result 230 states and 279 transitions. [2021-11-13 01:42:58,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:42:58,085 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 153 [2021-11-13 01:42:58,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:58,090 INFO L225 Difference]: With dead ends: 230 [2021-11-13 01:42:58,090 INFO L226 Difference]: Without dead ends: 122 [2021-11-13 01:42:58,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-13 01:42:58,093 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 2 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 272.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.57ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 313.72ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:58,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 619 Invalid, 85 Unknown, 0 Unchecked, 6.57ms Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 313.72ms Time] [2021-11-13 01:42:58,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-11-13 01:42:58,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-11-13 01:42:58,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 73 states have (on average 1.1369863013698631) internal successors, (83), 75 states have internal predecessors, (83), 32 states have call successors, (32), 14 states have call predecessors, (32), 16 states have return successors, (33), 32 states have call predecessors, (33), 31 states have call successors, (33) [2021-11-13 01:42:58,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 148 transitions. [2021-11-13 01:42:58,110 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 148 transitions. Word has length 153 [2021-11-13 01:42:58,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:58,111 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 148 transitions. [2021-11-13 01:42:58,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-13 01:42:58,112 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 148 transitions. [2021-11-13 01:42:58,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-13 01:42:58,114 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:58,115 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:42:58,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 01:42:58,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:42:58,343 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:42:58,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:58,344 INFO L85 PathProgramCache]: Analyzing trace with hash 2040367895, now seen corresponding path program 1 times [2021-11-13 01:42:58,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:42:58,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [712921288] [2021-11-13 01:42:58,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:58,348 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:42:58,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:42:58,349 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:42:58,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 01:43:03,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:03,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 1858 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-13 01:43:03,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:43:03,965 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 16 treesize of output 12 [2021-11-13 01:43:05,432 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-11-13 01:43:05,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:43:06,481 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 30 treesize of output 26 [2021-11-13 01:43:06,919 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2021-11-13 01:43:06,919 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:43:06,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [712921288] [2021-11-13 01:43:06,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [712921288] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:43:06,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:43:06,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 15 [2021-11-13 01:43:06,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485879152] [2021-11-13 01:43:06,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:06,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 01:43:06,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:43:06,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 01:43:06,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-13 01:43:06,924 INFO L87 Difference]: Start difference. First operand 122 states and 148 transitions. Second operand has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 9 states have internal predecessors, (75), 4 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2021-11-13 01:43:07,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:07,502 INFO L93 Difference]: Finished difference Result 233 states and 281 transitions. [2021-11-13 01:43:07,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 01:43:07,504 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 9 states have internal predecessors, (75), 4 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 158 [2021-11-13 01:43:07,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:07,506 INFO L225 Difference]: With dead ends: 233 [2021-11-13 01:43:07,507 INFO L226 Difference]: Without dead ends: 131 [2021-11-13 01:43:07,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-11-13 01:43:07,510 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 12 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 435.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.35ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 461.58ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:07,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 913 Invalid, 65 Unknown, 0 Unchecked, 8.35ms Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 49 Unchecked, 461.58ms Time] [2021-11-13 01:43:07,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-13 01:43:07,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-11-13 01:43:07,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 81 states have (on average 1.1481481481481481) internal successors, (93), 83 states have internal predecessors, (93), 32 states have call successors, (32), 15 states have call predecessors, (32), 17 states have return successors, (34), 32 states have call predecessors, (34), 31 states have call successors, (34) [2021-11-13 01:43:07,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 159 transitions. [2021-11-13 01:43:07,541 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 159 transitions. Word has length 158 [2021-11-13 01:43:07,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:07,543 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 159 transitions. [2021-11-13 01:43:07,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 9 states have internal predecessors, (75), 4 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2021-11-13 01:43:07,545 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 159 transitions. [2021-11-13 01:43:07,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-13 01:43:07,550 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:07,550 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:43:07,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-13 01:43:07,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:43:07,759 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:43:07,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:07,760 INFO L85 PathProgramCache]: Analyzing trace with hash -377536171, now seen corresponding path program 1 times [2021-11-13 01:43:07,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:43:07,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [799861914] [2021-11-13 01:43:07,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:07,765 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:43:07,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:43:07,766 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:43:07,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 01:43:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:12,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 1855 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:43:12,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:43:13,403 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-11-13 01:43:13,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:43:14,130 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2021-11-13 01:43:14,130 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:43:14,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [799861914] [2021-11-13 01:43:14,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [799861914] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:43:14,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:43:14,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-13 01:43:14,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568973141] [2021-11-13 01:43:14,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:14,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:43:14,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:43:14,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:43:14,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:43:14,133 INFO L87 Difference]: Start difference. First operand 131 states and 159 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-13 01:43:14,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:14,273 INFO L93 Difference]: Finished difference Result 237 states and 289 transitions. [2021-11-13 01:43:14,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:43:14,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 158 [2021-11-13 01:43:14,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:14,276 INFO L225 Difference]: With dead ends: 237 [2021-11-13 01:43:14,276 INFO L226 Difference]: Without dead ends: 133 [2021-11-13 01:43:14,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:43:14,278 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 23 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 104.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.38ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 120.85ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:14,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 376 Invalid, 23 Unknown, 0 Unchecked, 4.38ms Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 120.85ms Time] [2021-11-13 01:43:14,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-11-13 01:43:14,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2021-11-13 01:43:14,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 82 states have (on average 1.1341463414634145) internal successors, (93), 84 states have internal predecessors, (93), 33 states have call successors, (33), 15 states have call predecessors, (33), 17 states have return successors, (37), 33 states have call predecessors, (37), 32 states have call successors, (37) [2021-11-13 01:43:14,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 163 transitions. [2021-11-13 01:43:14,314 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 163 transitions. Word has length 158 [2021-11-13 01:43:14,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:14,316 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 163 transitions. [2021-11-13 01:43:14,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-13 01:43:14,316 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 163 transitions. [2021-11-13 01:43:14,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-13 01:43:14,321 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:14,321 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:43:14,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 01:43:14,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:43:14,535 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:43:14,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:14,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1657561512, now seen corresponding path program 1 times [2021-11-13 01:43:14,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:43:14,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1151049132] [2021-11-13 01:43:14,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:14,540 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:43:14,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:43:14,541 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:43:14,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 01:43:19,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:19,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 1872 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-13 01:43:19,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:43:20,098 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 16 treesize of output 12 [2021-11-13 01:43:21,481 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-11-13 01:43:21,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:43:22,682 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 30 treesize of output 26 [2021-11-13 01:43:23,101 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2021-11-13 01:43:23,102 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:43:23,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1151049132] [2021-11-13 01:43:23,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1151049132] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:43:23,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:43:23,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 17 [2021-11-13 01:43:23,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119710620] [2021-11-13 01:43:23,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:23,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 01:43:23,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:43:23,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 01:43:23,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-11-13 01:43:23,105 INFO L87 Difference]: Start difference. First operand 133 states and 163 transitions. Second operand has 12 states, 11 states have (on average 7.181818181818182) internal successors, (79), 10 states have internal predecessors, (79), 5 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2021-11-13 01:43:25,350 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:43:26,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:26,540 INFO L93 Difference]: Finished difference Result 248 states and 303 transitions. [2021-11-13 01:43:26,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 01:43:26,543 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.181818181818182) internal successors, (79), 10 states have internal predecessors, (79), 5 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) Word has length 164 [2021-11-13 01:43:26,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:26,546 INFO L225 Difference]: With dead ends: 248 [2021-11-13 01:43:26,546 INFO L226 Difference]: Without dead ends: 136 [2021-11-13 01:43:26,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-11-13 01:43:26,548 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 22 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3165.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.11ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 3288.60ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:26,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 958 Invalid, 154 Unknown, 0 Unchecked, 7.11ms Time], IncrementalHoareTripleChecker [6 Valid, 63 Invalid, 1 Unknown, 84 Unchecked, 3288.60ms Time] [2021-11-13 01:43:26,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-13 01:43:26,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2021-11-13 01:43:26,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 84 states have (on average 1.130952380952381) internal successors, (95), 86 states have internal predecessors, (95), 34 states have call successors, (34), 16 states have call predecessors, (34), 17 states have return successors, (38), 33 states have call predecessors, (38), 33 states have call successors, (38) [2021-11-13 01:43:26,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 167 transitions. [2021-11-13 01:43:26,567 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 167 transitions. Word has length 164 [2021-11-13 01:43:26,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:26,568 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 167 transitions. [2021-11-13 01:43:26,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.181818181818182) internal successors, (79), 10 states have internal predecessors, (79), 5 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2021-11-13 01:43:26,569 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 167 transitions. [2021-11-13 01:43:26,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-13 01:43:26,572 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:26,573 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:43:26,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 01:43:26,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:43:26,796 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:43:26,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:26,797 INFO L85 PathProgramCache]: Analyzing trace with hash 819666307, now seen corresponding path program 1 times [2021-11-13 01:43:26,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:43:26,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1849209816] [2021-11-13 01:43:26,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:26,800 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:43:26,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:43:26,801 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:43:26,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 01:43:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:32,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 1889 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:43:32,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:43:32,580 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-11-13 01:43:32,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:43:33,240 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 17 proven. 12 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2021-11-13 01:43:33,241 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:43:33,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1849209816] [2021-11-13 01:43:33,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1849209816] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:43:33,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:43:33,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-13 01:43:33,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831940031] [2021-11-13 01:43:33,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:33,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:43:33,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:43:33,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:43:33,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-13 01:43:33,245 INFO L87 Difference]: Start difference. First operand 136 states and 167 transitions. Second operand has 6 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-13 01:43:33,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:33,559 INFO L93 Difference]: Finished difference Result 200 states and 248 transitions. [2021-11-13 01:43:33,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:43:33,560 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 169 [2021-11-13 01:43:33,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:33,563 INFO L225 Difference]: With dead ends: 200 [2021-11-13 01:43:33,563 INFO L226 Difference]: Without dead ends: 134 [2021-11-13 01:43:33,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-13 01:43:33,565 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 2 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 236.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.53ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 272.63ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:33,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 619 Invalid, 85 Unknown, 0 Unchecked, 3.53ms Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 272.63ms Time] [2021-11-13 01:43:33,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-13 01:43:33,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 130. [2021-11-13 01:43:33,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 80 states have (on average 1.1125) internal successors, (89), 81 states have internal predecessors, (89), 34 states have call successors, (34), 16 states have call predecessors, (34), 15 states have return successors, (36), 32 states have call predecessors, (36), 33 states have call successors, (36) [2021-11-13 01:43:33,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 159 transitions. [2021-11-13 01:43:33,583 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 159 transitions. Word has length 169 [2021-11-13 01:43:33,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:33,584 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 159 transitions. [2021-11-13 01:43:33,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-13 01:43:33,584 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 159 transitions. [2021-11-13 01:43:33,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-13 01:43:33,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:33,593 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:43:33,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 01:43:33,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:43:33,794 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:43:33,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:33,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1756799102, now seen corresponding path program 1 times [2021-11-13 01:43:33,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:43:33,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1572698677] [2021-11-13 01:43:33,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:33,798 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:43:33,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:43:33,799 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:43:33,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 01:43:38,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:39,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 1936 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 01:43:39,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:43:39,652 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2021-11-13 01:43:39,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:43:40,281 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 30 proven. 3 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-11-13 01:43:40,281 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:43:40,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1572698677] [2021-11-13 01:43:40,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1572698677] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:43:40,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:43:40,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2021-11-13 01:43:40,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594246171] [2021-11-13 01:43:40,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:40,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 01:43:40,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:43:40,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 01:43:40,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:43:40,284 INFO L87 Difference]: Start difference. First operand 130 states and 159 transitions. Second operand has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-13 01:43:40,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:40,600 INFO L93 Difference]: Finished difference Result 184 states and 227 transitions. [2021-11-13 01:43:40,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 01:43:40,602 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 174 [2021-11-13 01:43:40,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:40,604 INFO L225 Difference]: With dead ends: 184 [2021-11-13 01:43:40,604 INFO L226 Difference]: Without dead ends: 136 [2021-11-13 01:43:40,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-13 01:43:40,605 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 2 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 243.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.31ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 274.83ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:40,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 739 Invalid, 105 Unknown, 0 Unchecked, 5.31ms Time], IncrementalHoareTripleChecker [0 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 274.83ms Time] [2021-11-13 01:43:40,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-13 01:43:40,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 133. [2021-11-13 01:43:40,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 82 states have (on average 1.1097560975609757) internal successors, (91), 84 states have internal predecessors, (91), 34 states have call successors, (34), 16 states have call predecessors, (34), 16 states have return successors, (38), 32 states have call predecessors, (38), 33 states have call successors, (38) [2021-11-13 01:43:40,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 163 transitions. [2021-11-13 01:43:40,621 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 163 transitions. Word has length 174 [2021-11-13 01:43:40,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:40,622 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 163 transitions. [2021-11-13 01:43:40,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-13 01:43:40,623 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 163 transitions. [2021-11-13 01:43:40,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-13 01:43:40,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:40,627 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:43:40,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 01:43:40,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:43:40,851 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:43:40,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:40,852 INFO L85 PathProgramCache]: Analyzing trace with hash -595591135, now seen corresponding path program 1 times [2021-11-13 01:43:40,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:43:40,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [568303139] [2021-11-13 01:43:40,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:40,856 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:43:40,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:43:40,857 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:43:40,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 01:43:46,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:46,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 1950 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-13 01:43:46,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:43:47,794 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2021-11-13 01:43:47,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:43:49,158 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-11-13 01:43:49,158 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:43:49,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [568303139] [2021-11-13 01:43:49,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [568303139] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:43:49,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:43:49,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2021-11-13 01:43:49,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613445657] [2021-11-13 01:43:49,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:49,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:43:49,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:43:49,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:43:49,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-13 01:43:49,160 INFO L87 Difference]: Start difference. First operand 133 states and 163 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-13 01:43:51,378 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 [] [2021-11-13 01:43:53,386 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 [] [2021-11-13 01:43:54,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:54,600 INFO L93 Difference]: Finished difference Result 193 states and 237 transitions. [2021-11-13 01:43:54,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 01:43:54,603 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) Word has length 180 [2021-11-13 01:43:54,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:54,605 INFO L225 Difference]: With dead ends: 193 [2021-11-13 01:43:54,605 INFO L226 Difference]: Without dead ends: 136 [2021-11-13 01:43:54,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-11-13 01:43:54,607 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 7 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4873.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.13ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 5005.20ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:54,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 628 Invalid, 82 Unknown, 0 Unchecked, 3.13ms Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 2 Unknown, 44 Unchecked, 5005.20ms Time] [2021-11-13 01:43:54,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-13 01:43:54,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 132. [2021-11-13 01:43:54,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 82 states have (on average 1.1097560975609757) internal successors, (91), 83 states have internal predecessors, (91), 33 states have call successors, (33), 16 states have call predecessors, (33), 16 states have return successors, (37), 32 states have call predecessors, (37), 32 states have call successors, (37) [2021-11-13 01:43:54,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 161 transitions. [2021-11-13 01:43:54,623 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 161 transitions. Word has length 180 [2021-11-13 01:43:54,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:54,624 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 161 transitions. [2021-11-13 01:43:54,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-13 01:43:54,625 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 161 transitions. [2021-11-13 01:43:54,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-13 01:43:54,627 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:54,627 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:43:54,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 01:43:54,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:43:54,846 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:43:54,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:54,847 INFO L85 PathProgramCache]: Analyzing trace with hash 871217396, now seen corresponding path program 2 times [2021-11-13 01:43:54,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:43:54,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [47118953] [2021-11-13 01:43:54,852 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 01:43:54,853 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:43:54,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:43:54,854 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:43:54,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 01:43:58,951 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-13 01:43:58,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:43:59,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:43:59,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:43:59,531 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2021-11-13 01:43:59,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:44:00,123 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2021-11-13 01:44:00,123 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:44:00,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [47118953] [2021-11-13 01:44:00,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [47118953] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:44:00,124 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:44:00,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 01:44:00,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497897170] [2021-11-13 01:44:00,124 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:44:00,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:44:00,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:44:00,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:44:00,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:44:00,127 INFO L87 Difference]: Start difference. First operand 132 states and 161 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-13 01:44:00,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:44:00,233 INFO L93 Difference]: Finished difference Result 184 states and 224 transitions. [2021-11-13 01:44:00,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:44:00,234 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 185 [2021-11-13 01:44:00,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:44:00,237 INFO L225 Difference]: With dead ends: 184 [2021-11-13 01:44:00,237 INFO L226 Difference]: Without dead ends: 134 [2021-11-13 01:44:00,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:44:00,239 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 4 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.36ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.90ms IncrementalHoareTripleChecker+Time [2021-11-13 01:44:00,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 413 Invalid, 10 Unknown, 0 Unchecked, 1.36ms Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 69.90ms Time] [2021-11-13 01:44:00,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-13 01:44:00,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-11-13 01:44:00,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 84 states have (on average 1.1071428571428572) internal successors, (93), 85 states have internal predecessors, (93), 33 states have call successors, (33), 16 states have call predecessors, (33), 16 states have return successors, (37), 32 states have call predecessors, (37), 32 states have call successors, (37) [2021-11-13 01:44:00,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 163 transitions. [2021-11-13 01:44:00,254 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 163 transitions. Word has length 185 [2021-11-13 01:44:00,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:44:00,255 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 163 transitions. [2021-11-13 01:44:00,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-13 01:44:00,255 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 163 transitions. [2021-11-13 01:44:00,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-13 01:44:00,258 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:44:00,258 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:44:00,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 01:44:00,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:44:00,483 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:44:00,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:44:00,483 INFO L85 PathProgramCache]: Analyzing trace with hash -109706444, now seen corresponding path program 1 times [2021-11-13 01:44:00,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:44:00,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1025315214] [2021-11-13 01:44:00,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:44:00,487 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:44:00,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:44:00,488 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:44:00,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 01:44:05,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:44:06,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 1977 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:44:06,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:44:06,540 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2021-11-13 01:44:06,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:44:07,328 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2021-11-13 01:44:07,329 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:44:07,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1025315214] [2021-11-13 01:44:07,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1025315214] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:44:07,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [918092669] [2021-11-13 01:44:07,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:44:07,330 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:44:07,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:44:07,332 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:44:07,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-13 01:44:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:44:12,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 1977 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:44:12,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:44:13,197 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2021-11-13 01:44:13,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:44:13,807 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2021-11-13 01:44:13,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [918092669] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:44:13,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247981622] [2021-11-13 01:44:13,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:44:13,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:44:13,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:44:13,810 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:44:13,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-13 01:44:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:44:15,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 1977 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 01:44:15,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:44:16,335 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2021-11-13 01:44:16,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:44:17,248 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2021-11-13 01:44:17,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247981622] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:44:17,248 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-13 01:44:17,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-13 01:44:17,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39709620] [2021-11-13 01:44:17,250 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-13 01:44:17,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-13 01:44:17,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:44:17,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-13 01:44:17,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-13 01:44:17,253 INFO L87 Difference]: Start difference. First operand 134 states and 163 transitions. Second operand has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 14 states have internal predecessors, (78), 2 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-13 01:44:18,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:44:18,198 INFO L93 Difference]: Finished difference Result 188 states and 230 transitions. [2021-11-13 01:44:18,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 01:44:18,200 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 14 states have internal predecessors, (78), 2 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 187 [2021-11-13 01:44:18,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:44:18,202 INFO L225 Difference]: With dead ends: 188 [2021-11-13 01:44:18,203 INFO L226 Difference]: Without dead ends: 138 [2021-11-13 01:44:18,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1120 GetRequests, 1104 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=122, Invalid=184, Unknown=0, NotChecked=0, Total=306 [2021-11-13 01:44:18,204 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 23 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 255.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.75ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 282.28ms IncrementalHoareTripleChecker+Time [2021-11-13 01:44:18,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 682 Invalid, 54 Unknown, 0 Unchecked, 2.75ms Time], IncrementalHoareTripleChecker [15 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 282.28ms Time] [2021-11-13 01:44:18,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-13 01:44:18,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2021-11-13 01:44:18,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 88 states have (on average 1.1022727272727273) internal successors, (97), 89 states have internal predecessors, (97), 33 states have call successors, (33), 16 states have call predecessors, (33), 16 states have return successors, (37), 32 states have call predecessors, (37), 32 states have call successors, (37) [2021-11-13 01:44:18,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 167 transitions. [2021-11-13 01:44:18,219 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 167 transitions. Word has length 187 [2021-11-13 01:44:18,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:44:18,220 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 167 transitions. [2021-11-13 01:44:18,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 14 states have internal predecessors, (78), 2 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-13 01:44:18,221 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 167 transitions. [2021-11-13 01:44:18,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-13 01:44:18,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:44:18,224 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:44:18,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-13 01:44:18,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-13 01:44:18,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2021-11-13 01:44:18,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:44:18,843 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:44:18,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:44:18,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1441654708, now seen corresponding path program 2 times [2021-11-13 01:44:18,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:44:18,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163184118] [2021-11-13 01:44:18,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 01:44:18,848 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:44:18,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:44:18,850 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:44:18,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df01171b-ab84-492b-ab77-df25d763e545/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process