./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_swap_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_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/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_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/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_54c2db43-74f7-497a-87b2-aa990cf2078f/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 50333b6a17e96dff6400d2c6a85c0145ae494daf76266f6b6d6936a12a6b2527 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:38:56,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:38:56,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:38:56,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:38:56,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:38:56,067 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:38:56,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:38:56,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:38:56,075 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:38:56,080 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:38:56,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:38:56,083 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:38:56,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:38:56,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:38:56,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:38:56,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:38:56,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:38:56,095 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:38:56,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:38:56,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:38:56,107 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:38:56,108 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:38:56,111 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:38:56,112 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:38:56,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:38:56,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:38:56,122 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:38:56,124 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:38:56,125 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:38:56,126 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:38:56,127 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:38:56,128 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:38:56,130 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:38:56,131 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:38:56,132 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:38:56,132 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:38:56,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:38:56,133 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:38:56,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:38:56,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:38:56,135 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:38:56,136 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 22:38:56,177 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:38:56,178 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:38:56,179 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:38:56,179 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:38:56,179 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:38:56,180 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:38:56,180 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:38:56,180 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:38:56,186 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:38:56,187 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:38:56,188 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:38:56,188 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:38:56,188 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:38:56,188 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:38:56,188 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:38:56,189 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:38:56,189 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:38:56,189 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:38:56,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:38:56,190 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:38:56,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:38:56,190 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:38:56,190 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:38:56,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:38:56,191 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:38:56,191 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:38:56,191 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:38:56,191 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:38:56,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:38:56,192 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:38:56,192 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:38:56,192 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:38:56,193 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:38:56,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:38:56,193 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:38:56,193 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:38:56,193 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:38:56,193 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_54c2db43-74f7-497a-87b2-aa990cf2078f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50333b6a17e96dff6400d2c6a85c0145ae494daf76266f6b6d6936a12a6b2527 [2021-11-12 22:38:56,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:38:56,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:38:56,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:38:56,518 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:38:56,519 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:38:56,520 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i [2021-11-12 22:38:56,587 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/data/0ce8fe1aa/2669a6efb59b4efa8b3b2b054d9f9c02/FLAGe4ee82b9a [2021-11-12 22:38:57,455 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:38:57,456 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i [2021-11-12 22:38:57,504 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/data/0ce8fe1aa/2669a6efb59b4efa8b3b2b054d9f9c02/FLAGe4ee82b9a [2021-11-12 22:38:57,591 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/data/0ce8fe1aa/2669a6efb59b4efa8b3b2b054d9f9c02 [2021-11-12 22:38:57,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:38:57,594 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:38:57,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:38:57,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:38:57,601 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:38:57,602 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:38:57" (1/1) ... [2021-11-12 22:38:57,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@202e2423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:38:57, skipping insertion in model container [2021-11-12 22:38:57,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:38:57" (1/1) ... [2021-11-12 22:38:57,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:38:57,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:38:58,170 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_54c2db43-74f7-497a-87b2-aa990cf2078f/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i[4493,4506] [2021-11-12 22:38:58,180 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_54c2db43-74f7-497a-87b2-aa990cf2078f/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i[4553,4566] [2021-11-12 22:38:58,212 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:38:58,219 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:38:59,362 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:38:59,363 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:38:59,363 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:38:59,364 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:38:59,365 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:38:59,380 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:38:59,381 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:38:59,383 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:38:59,384 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:38:59,386 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:38:59,387 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:38:59,388 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:38:59,389 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:38:59,904 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:38:59,908 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:38:59,910 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:38:59,911 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:38:59,914 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:38:59,915 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:38:59,916 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:38:59,944 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:38:59,945 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:38:59,958 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:39:00,201 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:39:00,589 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:00,590 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:00,610 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:00,611 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:00,617 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:00,617 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:00,630 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:00,631 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:00,632 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:00,633 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:00,633 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:00,633 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:00,634 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:00,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:39:00,693 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 22:39:00,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5e9118cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:00, skipping insertion in model container [2021-11-12 22:39:00,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:39:00,695 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 22:39:00,697 INFO L158 Benchmark]: Toolchain (without parser) took 3101.09ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 57.0MB in the beginning and 50.7MB in the end (delta: 6.3MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. [2021-11-12 22:39:00,697 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 96.5MB. Free memory is still 52.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:39:00,698 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3098.55ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 56.7MB in the beginning and 50.7MB in the end (delta: 6.0MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. [2021-11-12 22:39:00,700 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 96.5MB. Free memory is still 52.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3098.55ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 56.7MB in the beginning and 50.7MB in the end (delta: 6.0MB). Peak memory consumption was 24.6MB. 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_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/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_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/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_54c2db43-74f7-497a-87b2-aa990cf2078f/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 50333b6a17e96dff6400d2c6a85c0145ae494daf76266f6b6d6936a12a6b2527 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:39:03,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:39:03,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:39:03,067 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:39:03,068 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:39:03,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:39:03,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:39:03,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:39:03,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:39:03,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:39:03,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:39:03,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:39:03,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:39:03,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:39:03,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:39:03,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:39:03,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:39:03,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:39:03,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:39:03,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:39:03,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:39:03,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:39:03,121 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:39:03,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:39:03,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:39:03,131 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:39:03,132 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:39:03,134 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:39:03,134 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:39:03,135 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:39:03,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:39:03,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:39:03,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:39:03,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:39:03,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:39:03,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:39:03,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:39:03,142 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:39:03,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:39:03,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:39:03,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:39:03,146 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 22:39:03,190 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:39:03,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:39:03,191 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:39:03,191 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:39:03,192 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:39:03,192 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:39:03,192 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:39:03,192 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:39:03,192 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:39:03,192 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:39:03,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:39:03,195 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:39:03,195 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:39:03,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:39:03,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:39:03,196 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:39:03,196 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:39:03,196 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:39:03,196 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:39:03,196 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:39:03,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:39:03,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:39:03,197 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:39:03,197 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:39:03,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:39:03,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:39:03,198 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:39:03,198 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:39:03,198 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:39:03,198 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:39:03,198 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:39:03,199 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:39:03,199 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:39:03,199 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_54c2db43-74f7-497a-87b2-aa990cf2078f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50333b6a17e96dff6400d2c6a85c0145ae494daf76266f6b6d6936a12a6b2527 [2021-11-12 22:39:03,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:39:03,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:39:03,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:39:03,605 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:39:03,607 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:39:03,608 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i [2021-11-12 22:39:03,696 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/data/3f3503b98/71cf597ac1d9485d883b02bc8fe6af82/FLAG7a1659f93 [2021-11-12 22:39:04,793 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:39:04,794 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i [2021-11-12 22:39:04,835 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/data/3f3503b98/71cf597ac1d9485d883b02bc8fe6af82/FLAG7a1659f93 [2021-11-12 22:39:04,850 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/data/3f3503b98/71cf597ac1d9485d883b02bc8fe6af82 [2021-11-12 22:39:04,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:39:04,856 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:39:04,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:39:04,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:39:04,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:39:04,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:39:04" (1/1) ... [2021-11-12 22:39:04,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@792ec3ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:04, skipping insertion in model container [2021-11-12 22:39:04,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:39:04" (1/1) ... [2021-11-12 22:39:04,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:39:05,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:39:05,328 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_54c2db43-74f7-497a-87b2-aa990cf2078f/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i[4493,4506] [2021-11-12 22:39:05,337 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_54c2db43-74f7-497a-87b2-aa990cf2078f/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i[4553,4566] [2021-11-12 22:39:05,376 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:39:05,384 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:39:06,687 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:06,688 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:06,688 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:06,689 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:06,690 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:06,722 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:06,734 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:06,736 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:06,736 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:06,738 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:06,740 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:06,740 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:06,741 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:07,249 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:39:07,252 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:39:07,253 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:39:07,255 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:39:07,257 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:39:07,258 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:39:07,259 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:39:07,260 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:39:07,267 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:39:07,268 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:39:07,545 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:39:07,978 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:07,978 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,003 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,004 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,010 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,011 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,032 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,034 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,034 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,035 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,035 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,035 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,036 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:39:08,165 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 22:39:08,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:39:08,217 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_54c2db43-74f7-497a-87b2-aa990cf2078f/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i[4493,4506] [2021-11-12 22:39:08,217 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_54c2db43-74f7-497a-87b2-aa990cf2078f/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i[4553,4566] [2021-11-12 22:39:08,218 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:39:08,233 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:39:08,261 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,261 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,262 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,262 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,263 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,268 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,269 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,270 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,270 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,271 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,272 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,272 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,273 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,301 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:39:08,302 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:39:08,302 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:39:08,303 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:39:08,304 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:39:08,304 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:39:08,305 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:39:08,305 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:39:08,305 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:39:08,306 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:39:08,324 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:39:08,487 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,488 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,496 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,511 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,514 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,515 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,524 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,544 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,544 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,545 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,545 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,546 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,547 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:39:08,649 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:39:08,675 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_54c2db43-74f7-497a-87b2-aa990cf2078f/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i[4493,4506] [2021-11-12 22:39:08,675 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_54c2db43-74f7-497a-87b2-aa990cf2078f/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i[4553,4566] [2021-11-12 22:39:08,677 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:39:08,677 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:39:08,734 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,735 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,735 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,736 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,736 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,762 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,763 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,764 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,764 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,765 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,766 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,766 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,766 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,792 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:39:08,794 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:39:08,794 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:39:08,795 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:39:08,796 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:39:08,796 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:39:08,797 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:39:08,798 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:39:08,798 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:39:08,799 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:39:08,817 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:39:08,940 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,941 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,952 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,953 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,956 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,956 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,965 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,966 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,967 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,967 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,967 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,968 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,968 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:39:08,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:39:09,272 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:39:09,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:09 WrapperNode [2021-11-12 22:39:09,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:39:09,274 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:39:09,274 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:39:09,275 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:39:09,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:09" (1/1) ... [2021-11-12 22:39:09,415 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:09" (1/1) ... [2021-11-12 22:39:09,514 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:39:09,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:39:09,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:39:09,515 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:39:09,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:09" (1/1) ... [2021-11-12 22:39:09,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:09" (1/1) ... [2021-11-12 22:39:09,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:09" (1/1) ... [2021-11-12 22:39:09,545 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:09" (1/1) ... [2021-11-12 22:39:09,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:09" (1/1) ... [2021-11-12 22:39:09,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:09" (1/1) ... [2021-11-12 22:39:09,679 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:09" (1/1) ... [2021-11-12 22:39:09,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:39:09,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:39:09,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:39:09,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:39:09,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:09" (1/1) ... [2021-11-12 22:39:09,711 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:39:09,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:39:09,735 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:39:09,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:39:09,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-12 22:39:09,783 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_hash_table [2021-11-12 22:39:09,783 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_hash_table [2021-11-12 22:39:09,790 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-12 22:39:09,793 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-12 22:39:09,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 22:39:09,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 22:39:09,794 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-11-12 22:39:09,794 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-11-12 22:39:09,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 22:39:09,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 22:39:09,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:39:09,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:39:09,794 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-12 22:39:09,794 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-12 22:39:09,794 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-12 22:39:09,794 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-12 22:39:09,795 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-12 22:39:09,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:39:09,795 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-12 22:39:09,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-12 22:39:09,795 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-12 22:39:09,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 22:39:09,795 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-12 22:39:09,795 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-12 22:39:09,795 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-11-12 22:39:09,796 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-11-12 22:39:09,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:39:09,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:39:09,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 22:39:09,797 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-11-12 22:39:09,797 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-11-12 22:39:09,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 22:39:09,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 22:39:09,797 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 22:39:09,797 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 22:39:09,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 22:39:09,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 22:39:09,797 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-11-12 22:39:09,798 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-11-12 22:39:09,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 22:39:09,798 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_allocated_hash_table [2021-11-12 22:39:09,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_allocated_hash_table [2021-11-12 22:39:09,798 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-12 22:39:09,798 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-12 22:39:09,798 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-12 22:39:09,799 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-12 22:39:09,799 INFO L130 BoogieDeclarations]: Found specification of procedure check_hash_table_unchanged [2021-11-12 22:39:09,799 INFO L138 BoogieDeclarations]: Found implementation of procedure check_hash_table_unchanged [2021-11-12 22:39:22,709 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:39:22,709 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 22:39:22,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:39:22 BoogieIcfgContainer [2021-11-12 22:39:22,712 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:39:22,713 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:39:22,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:39:22,716 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:39:22,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:39:04" (1/3) ... [2021-11-12 22:39:22,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@179cd6ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:39:22, skipping insertion in model container [2021-11-12 22:39:22,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:39:09" (2/3) ... [2021-11-12 22:39:22,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@179cd6ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:39:22, skipping insertion in model container [2021-11-12 22:39:22,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:39:22" (3/3) ... [2021-11-12 22:39:22,719 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_swap_harness.i [2021-11-12 22:39:22,725 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:39:22,725 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:39:22,773 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:39:22,779 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 22:39:22,780 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:39:22,800 INFO L276 IsEmpty]: Start isEmpty. Operand has 132 states, 79 states have (on average 1.1898734177215189) internal successors, (94), 84 states have internal predecessors, (94), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-11-12 22:39:22,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-12 22:39:22,807 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:22,808 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:39:22,808 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:39:22,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:22,814 INFO L85 PathProgramCache]: Analyzing trace with hash 226450914, now seen corresponding path program 1 times [2021-11-12 22:39:22,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:39:22,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [105409234] [2021-11-12 22:39:22,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:22,839 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:39:22,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:39:22,842 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:39:22,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:39:26,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:26,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 1457 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:39:26,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:26,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:26,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:26,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:26,916 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:39:26,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [105409234] [2021-11-12 22:39:26,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [105409234] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:39:26,917 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:39:26,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:39:26,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903419282] [2021-11-12 22:39:26,922 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:39:26,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:39:26,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:39:26,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:39:26,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:39:26,969 INFO L87 Difference]: Start difference. First operand has 132 states, 79 states have (on average 1.1898734177215189) internal successors, (94), 84 states have internal predecessors, (94), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-12 22:39:27,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:39:27,038 INFO L93 Difference]: Finished difference Result 281 states and 378 transitions. [2021-11-12 22:39:27,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:39:27,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2021-11-12 22:39:27,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:39:27,051 INFO L225 Difference]: With dead ends: 281 [2021-11-12 22:39:27,051 INFO L226 Difference]: Without dead ends: 143 [2021-11-12 22:39:27,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:39:27,059 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 10 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.87ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.81ms IncrementalHoareTripleChecker+Time [2021-11-12 22:39:27,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 326 Invalid, 5 Unknown, 0 Unchecked, 4.87ms Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 16.81ms Time] [2021-11-12 22:39:27,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-12 22:39:27,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 138. [2021-11-12 22:39:27,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 81 states have (on average 1.1604938271604939) internal successors, (94), 85 states have internal predecessors, (94), 40 states have call successors, (40), 16 states have call predecessors, (40), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-11-12 22:39:27,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 173 transitions. [2021-11-12 22:39:27,116 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 173 transitions. Word has length 25 [2021-11-12 22:39:27,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:39:27,116 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 173 transitions. [2021-11-12 22:39:27,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-12 22:39:27,117 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 173 transitions. [2021-11-12 22:39:27,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-12 22:39:27,119 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:27,119 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:39:27,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:39:27,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:39:27,320 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:39:27,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:27,321 INFO L85 PathProgramCache]: Analyzing trace with hash -969994123, now seen corresponding path program 1 times [2021-11-12 22:39:27,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:39:27,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [745887735] [2021-11-12 22:39:27,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:27,325 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:39:27,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:39:27,326 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:39:27,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:39:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:30,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 1458 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:39:30,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:30,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:30,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:31,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:39:31,083 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:39:31,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [745887735] [2021-11-12 22:39:31,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [745887735] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:39:31,083 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:39:31,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:39:31,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955712400] [2021-11-12 22:39:31,084 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:39:31,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:39:31,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:39:31,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:39:31,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:39:31,086 INFO L87 Difference]: Start difference. First operand 138 states and 173 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-12 22:39:31,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:39:31,123 INFO L93 Difference]: Finished difference Result 186 states and 230 transitions. [2021-11-12 22:39:31,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:39:31,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2021-11-12 22:39:31,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:39:31,126 INFO L225 Difference]: With dead ends: 186 [2021-11-12 22:39:31,126 INFO L226 Difference]: Without dead ends: 147 [2021-11-12 22:39:31,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:39:31,128 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 2 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.37ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.29ms IncrementalHoareTripleChecker+Time [2021-11-12 22:39:31,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 312 Invalid, 3 Unknown, 0 Unchecked, 3.37ms Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 16.29ms Time] [2021-11-12 22:39:31,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-11-12 22:39:31,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2021-11-12 22:39:31,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 86 states have (on average 1.1395348837209303) internal successors, (98), 89 states have internal predecessors, (98), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-11-12 22:39:31,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 184 transitions. [2021-11-12 22:39:31,149 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 184 transitions. Word has length 26 [2021-11-12 22:39:31,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:39:31,150 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 184 transitions. [2021-11-12 22:39:31,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-12 22:39:31,150 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 184 transitions. [2021-11-12 22:39:31,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-12 22:39:31,157 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:31,158 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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] [2021-11-12 22:39:31,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:39:31,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:39:31,379 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:39:31,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:31,380 INFO L85 PathProgramCache]: Analyzing trace with hash -296791543, now seen corresponding path program 1 times [2021-11-12 22:39:31,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:39:31,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [282092518] [2021-11-12 22:39:31,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:31,384 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:39:31,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:39:31,384 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:39:31,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:39:35,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:35,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:39:35,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:35,904 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-12 22:39:35,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:36,509 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-12 22:39:36,509 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:39:36,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [282092518] [2021-11-12 22:39:36,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [282092518] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:39:36,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:39:36,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-12 22:39:36,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70731216] [2021-11-12 22:39:36,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:39:36,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:39:36,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:39:36,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:39:36,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:39:36,512 INFO L87 Difference]: Start difference. First operand 147 states and 184 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-12 22:39:36,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:39:36,632 INFO L93 Difference]: Finished difference Result 292 states and 372 transitions. [2021-11-12 22:39:36,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:39:36,635 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 122 [2021-11-12 22:39:36,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:39:36,642 INFO L225 Difference]: With dead ends: 292 [2021-11-12 22:39:36,644 INFO L226 Difference]: Without dead ends: 151 [2021-11-12 22:39:36,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:39:36,651 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 2 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.88ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.63ms IncrementalHoareTripleChecker+Time [2021-11-12 22:39:36,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 612 Invalid, 11 Unknown, 0 Unchecked, 4.88ms Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 57.63ms Time] [2021-11-12 22:39:36,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-12 22:39:36,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2021-11-12 22:39:36,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 89 states have (on average 1.1348314606741574) internal successors, (101), 92 states have internal predecessors, (101), 44 states have call successors, (44), 16 states have call predecessors, (44), 17 states have return successors, (43), 43 states have call predecessors, (43), 42 states have call successors, (43) [2021-11-12 22:39:36,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 188 transitions. [2021-11-12 22:39:36,687 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 188 transitions. Word has length 122 [2021-11-12 22:39:36,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:39:36,688 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 188 transitions. [2021-11-12 22:39:36,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-12 22:39:36,689 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 188 transitions. [2021-11-12 22:39:36,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-12 22:39:36,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:36,709 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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] [2021-11-12 22:39:36,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-12 22:39:36,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:39:36,910 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:39:36,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:36,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1747088203, now seen corresponding path program 1 times [2021-11-12 22:39:36,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:39:36,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [247427066] [2021-11-12 22:39:36,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:36,914 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:39:36,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:39:36,915 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:39:36,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 22:39:40,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:40,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 1800 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:39:40,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:41,053 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-12 22:39:41,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:41,702 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-11-12 22:39:41,702 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:39:41,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [247427066] [2021-11-12 22:39:41,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [247427066] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:39:41,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:39:41,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-12 22:39:41,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249866904] [2021-11-12 22:39:41,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:39:41,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:39:41,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:39:41,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:39:41,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-12 22:39:41,705 INFO L87 Difference]: Start difference. First operand 151 states and 188 transitions. Second operand has 6 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-12 22:39:41,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:39:41,970 INFO L93 Difference]: Finished difference Result 299 states and 375 transitions. [2021-11-12 22:39:41,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:39:41,973 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 134 [2021-11-12 22:39:41,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:39:41,978 INFO L225 Difference]: With dead ends: 299 [2021-11-12 22:39:41,982 INFO L226 Difference]: Without dead ends: 153 [2021-11-12 22:39:41,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:39:41,985 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 2 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 175.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.45ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 216.42ms IncrementalHoareTripleChecker+Time [2021-11-12 22:39:41,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 704 Invalid, 70 Unknown, 0 Unchecked, 5.45ms Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 216.42ms Time] [2021-11-12 22:39:41,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-12 22:39:42,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2021-11-12 22:39:42,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 90 states have (on average 1.1333333333333333) internal successors, (102), 94 states have internal predecessors, (102), 44 states have call successors, (44), 16 states have call predecessors, (44), 18 states have return successors, (44), 43 states have call predecessors, (44), 42 states have call successors, (44) [2021-11-12 22:39:42,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 190 transitions. [2021-11-12 22:39:42,023 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 190 transitions. Word has length 134 [2021-11-12 22:39:42,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:39:42,023 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 190 transitions. [2021-11-12 22:39:42,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-12 22:39:42,024 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 190 transitions. [2021-11-12 22:39:42,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-12 22:39:42,026 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:42,026 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:39:42,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 22:39:42,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:39:42,227 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:39:42,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:42,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1134746585, now seen corresponding path program 1 times [2021-11-12 22:39:42,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:39:42,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1563422494] [2021-11-12 22:39:42,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:42,230 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:39:42,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:39:42,231 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:39:42,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 22:39:46,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:46,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 1847 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-12 22:39:46,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:46,730 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 [2021-11-12 22:39:47,874 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-12 22:39:47,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:48,797 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 [2021-11-12 22:39:49,157 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-12 22:39:49,158 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:39:49,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1563422494] [2021-11-12 22:39:49,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1563422494] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:39:49,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:39:49,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 16 [2021-11-12 22:39:49,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935031085] [2021-11-12 22:39:49,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:39:49,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 22:39:49,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:39:49,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 22:39:49,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-11-12 22:39:49,160 INFO L87 Difference]: Start difference. First operand 153 states and 190 transitions. Second operand has 12 states, 11 states have (on average 7.0) internal successors, (77), 9 states have internal predecessors, (77), 4 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-12 22:39:51,395 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:39:53,406 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:39:54,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:39:54,329 INFO L93 Difference]: Finished difference Result 302 states and 371 transitions. [2021-11-12 22:39:54,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 22:39:54,332 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 9 states have internal predecessors, (77), 4 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) Word has length 139 [2021-11-12 22:39:54,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:39:54,334 INFO L225 Difference]: With dead ends: 302 [2021-11-12 22:39:54,334 INFO L226 Difference]: Without dead ends: 162 [2021-11-12 22:39:54,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2021-11-12 22:39:54,336 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 12 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4948.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1256 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.13ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 5068.51ms IncrementalHoareTripleChecker+Time [2021-11-12 22:39:54,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 1256 Invalid, 124 Unknown, 0 Unchecked, 7.13ms Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 2 Unknown, 69 Unchecked, 5068.51ms Time] [2021-11-12 22:39:54,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-11-12 22:39:54,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2021-11-12 22:39:54,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 98 states have (on average 1.1428571428571428) internal successors, (112), 102 states have internal predecessors, (112), 44 states have call successors, (44), 17 states have call predecessors, (44), 19 states have return successors, (45), 43 states have call predecessors, (45), 42 states have call successors, (45) [2021-11-12 22:39:54,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 201 transitions. [2021-11-12 22:39:54,357 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 201 transitions. Word has length 139 [2021-11-12 22:39:54,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:39:54,357 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 201 transitions. [2021-11-12 22:39:54,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 9 states have internal predecessors, (77), 4 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-12 22:39:54,358 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 201 transitions. [2021-11-12 22:39:54,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-12 22:39:54,360 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:54,360 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:39:54,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 22:39:54,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:39:54,576 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:39:54,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:54,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1944066985, now seen corresponding path program 1 times [2021-11-12 22:39:54,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:39:54,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1601510749] [2021-11-12 22:39:54,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:54,580 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:39:54,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:39:54,581 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:39:54,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 22:39:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:39:58,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 1844 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:39:58,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:39:58,944 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-12 22:39:58,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:39:59,518 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-12 22:39:59,518 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:39:59,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1601510749] [2021-11-12 22:39:59,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1601510749] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:39:59,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:39:59,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-12 22:39:59,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883110558] [2021-11-12 22:39:59,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:39:59,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:39:59,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:39:59,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:39:59,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:39:59,521 INFO L87 Difference]: Start difference. First operand 162 states and 201 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-12 22:39:59,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:39:59,601 INFO L93 Difference]: Finished difference Result 306 states and 381 transitions. [2021-11-12 22:39:59,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:39:59,605 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 139 [2021-11-12 22:39:59,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:39:59,607 INFO L225 Difference]: With dead ends: 306 [2021-11-12 22:39:59,607 INFO L226 Difference]: Without dead ends: 164 [2021-11-12 22:39:59,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:39:59,609 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 22 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.07ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65.84ms IncrementalHoareTripleChecker+Time [2021-11-12 22:39:59,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 439 Invalid, 20 Unknown, 0 Unchecked, 2.07ms Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 65.84ms Time] [2021-11-12 22:39:59,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-11-12 22:39:59,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2021-11-12 22:39:59,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 99 states have (on average 1.1313131313131313) internal successors, (112), 103 states have internal predecessors, (112), 45 states have call successors, (45), 17 states have call predecessors, (45), 19 states have return successors, (49), 44 states have call predecessors, (49), 43 states have call successors, (49) [2021-11-12 22:39:59,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 206 transitions. [2021-11-12 22:39:59,646 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 206 transitions. Word has length 139 [2021-11-12 22:39:59,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:39:59,646 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 206 transitions. [2021-11-12 22:39:59,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-12 22:39:59,647 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 206 transitions. [2021-11-12 22:39:59,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-12 22:39:59,650 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:39:59,651 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:39:59,698 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-12 22:39:59,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:39:59,879 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:39:59,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:39:59,880 INFO L85 PathProgramCache]: Analyzing trace with hash 553901023, now seen corresponding path program 1 times [2021-11-12 22:39:59,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:39:59,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [148394050] [2021-11-12 22:39:59,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:39:59,882 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:39:59,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:39:59,883 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:39:59,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 22:40:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:40:03,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 1848 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-12 22:40:03,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:40:04,224 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 [2021-11-12 22:40:05,127 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-12 22:40:05,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:40:06,041 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 [2021-11-12 22:40:06,334 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-12 22:40:06,334 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:40:06,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [148394050] [2021-11-12 22:40:06,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [148394050] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:40:06,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:40:06,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 16 [2021-11-12 22:40:06,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845994504] [2021-11-12 22:40:06,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:40:06,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 22:40:06,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:40:06,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 22:40:06,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-11-12 22:40:06,337 INFO L87 Difference]: Start difference. First operand 164 states and 206 transitions. Second operand has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 9 states have internal predecessors, (78), 4 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-12 22:40:08,534 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:40:10,548 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:40:11,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:40:11,435 INFO L93 Difference]: Finished difference Result 291 states and 359 transitions. [2021-11-12 22:40:11,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 22:40:11,437 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 9 states have internal predecessors, (78), 4 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) Word has length 140 [2021-11-12 22:40:11,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:40:11,439 INFO L225 Difference]: With dead ends: 291 [2021-11-12 22:40:11,440 INFO L226 Difference]: Without dead ends: 173 [2021-11-12 22:40:11,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2021-11-12 22:40:11,441 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 12 mSDsluCounter, 1100 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4878.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.65ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 5001.92ms IncrementalHoareTripleChecker+Time [2021-11-12 22:40:11,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 1252 Invalid, 137 Unknown, 0 Unchecked, 4.65ms Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 2 Unknown, 82 Unchecked, 5001.92ms Time] [2021-11-12 22:40:11,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-12 22:40:11,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 171. [2021-11-12 22:40:11,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 105 states have (on average 1.1428571428571428) internal successors, (120), 109 states have internal predecessors, (120), 45 states have call successors, (45), 18 states have call predecessors, (45), 20 states have return successors, (51), 44 states have call predecessors, (51), 43 states have call successors, (51) [2021-11-12 22:40:11,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 216 transitions. [2021-11-12 22:40:11,455 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 216 transitions. Word has length 140 [2021-11-12 22:40:11,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:40:11,456 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 216 transitions. [2021-11-12 22:40:11,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 9 states have internal predecessors, (78), 4 states have call successors, (24), 3 states have call predecessors, (24), 5 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-12 22:40:11,457 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 216 transitions. [2021-11-12 22:40:11,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-12 22:40:11,459 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:40:11,459 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:40:11,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 22:40:11,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:40:11,683 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:40:11,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:40:11,684 INFO L85 PathProgramCache]: Analyzing trace with hash -816550733, now seen corresponding path program 1 times [2021-11-12 22:40:11,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:40:11,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [658881931] [2021-11-12 22:40:11,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:40:11,687 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:40:11,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:40:11,688 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:40:11,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 22:40:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:40:15,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 1861 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-12 22:40:15,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:40:15,877 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 [2021-11-12 22:40:16,943 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-12 22:40:16,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:40:18,219 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 [2021-11-12 22:40:18,576 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-12 22:40:18,577 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:40:18,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [658881931] [2021-11-12 22:40:18,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [658881931] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:40:18,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:40:18,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [12] total 18 [2021-11-12 22:40:18,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508923590] [2021-11-12 22:40:18,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:40:18,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-12 22:40:18,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:40:18,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-12 22:40:18,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2021-11-12 22:40:18,579 INFO L87 Difference]: Start difference. First operand 171 states and 216 transitions. Second operand has 13 states, 11 states have (on average 7.363636363636363) internal successors, (81), 10 states have internal predecessors, (81), 5 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (24), 6 states have call predecessors, (24), 5 states have call successors, (24) [2021-11-12 22:40:19,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:40:19,179 INFO L93 Difference]: Finished difference Result 335 states and 417 transitions. [2021-11-12 22:40:19,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-12 22:40:19,180 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 7.363636363636363) internal successors, (81), 10 states have internal predecessors, (81), 5 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (24), 6 states have call predecessors, (24), 5 states have call successors, (24) Word has length 145 [2021-11-12 22:40:19,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:40:19,183 INFO L225 Difference]: With dead ends: 335 [2021-11-12 22:40:19,183 INFO L226 Difference]: Without dead ends: 176 [2021-11-12 22:40:19,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-11-12 22:40:19,185 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 9 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 436.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.18ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 453.15ms IncrementalHoareTripleChecker+Time [2021-11-12 22:40:19,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 881 Invalid, 87 Unknown, 0 Unchecked, 3.18ms Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 66 Unchecked, 453.15ms Time] [2021-11-12 22:40:19,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-11-12 22:40:19,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2021-11-12 22:40:19,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 109 states have (on average 1.1376146788990826) internal successors, (124), 113 states have internal predecessors, (124), 46 states have call successors, (46), 19 states have call predecessors, (46), 20 states have return successors, (52), 44 states have call predecessors, (52), 44 states have call successors, (52) [2021-11-12 22:40:19,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 222 transitions. [2021-11-12 22:40:19,200 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 222 transitions. Word has length 145 [2021-11-12 22:40:19,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:40:19,201 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 222 transitions. [2021-11-12 22:40:19,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 7.363636363636363) internal successors, (81), 10 states have internal predecessors, (81), 5 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (24), 6 states have call predecessors, (24), 5 states have call successors, (24) [2021-11-12 22:40:19,201 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 222 transitions. [2021-11-12 22:40:19,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-12 22:40:19,203 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:40:19,204 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:40:19,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 22:40:19,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:40:19,427 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:40:19,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:40:19,428 INFO L85 PathProgramCache]: Analyzing trace with hash -662252703, now seen corresponding path program 1 times [2021-11-12 22:40:19,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:40:19,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1750993520] [2021-11-12 22:40:19,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:40:19,430 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:40:19,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:40:19,431 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:40:19,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 22:40:23,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:40:23,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 1845 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:40:23,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:40:23,681 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-12 22:40:23,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:40:24,151 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-12 22:40:24,151 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:40:24,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1750993520] [2021-11-12 22:40:24,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1750993520] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:40:24,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:40:24,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-12 22:40:24,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652257750] [2021-11-12 22:40:24,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:40:24,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:40:24,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:40:24,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:40:24,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:40:24,153 INFO L87 Difference]: Start difference. First operand 176 states and 222 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-12 22:40:24,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:40:24,230 INFO L93 Difference]: Finished difference Result 294 states and 362 transitions. [2021-11-12 22:40:24,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:40:24,231 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 140 [2021-11-12 22:40:24,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:40:24,233 INFO L225 Difference]: With dead ends: 294 [2021-11-12 22:40:24,233 INFO L226 Difference]: Without dead ends: 164 [2021-11-12 22:40:24,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:40:24,234 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 19 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.90ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.52ms IncrementalHoareTripleChecker+Time [2021-11-12 22:40:24,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 584 Invalid, 21 Unknown, 0 Unchecked, 1.90ms Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 64.52ms Time] [2021-11-12 22:40:24,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-11-12 22:40:24,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2021-11-12 22:40:24,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 100 states have (on average 1.11) internal successors, (111), 102 states have internal predecessors, (111), 45 states have call successors, (45), 19 states have call predecessors, (45), 18 states have return successors, (45), 43 states have call predecessors, (45), 43 states have call successors, (45) [2021-11-12 22:40:24,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 201 transitions. [2021-11-12 22:40:24,247 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 201 transitions. Word has length 140 [2021-11-12 22:40:24,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:40:24,247 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 201 transitions. [2021-11-12 22:40:24,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-12 22:40:24,248 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 201 transitions. [2021-11-12 22:40:24,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-12 22:40:24,250 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:40:24,251 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:40:24,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 22:40:24,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:40:24,467 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:40:24,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:40:24,468 INFO L85 PathProgramCache]: Analyzing trace with hash -886962197, now seen corresponding path program 1 times [2021-11-12 22:40:24,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:40:24,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1668366297] [2021-11-12 22:40:24,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:40:24,470 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:40:24,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:40:24,471 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:40:24,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 22:40:28,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:40:28,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 1862 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-12 22:40:28,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:40:28,696 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 [2021-11-12 22:40:29,717 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-12 22:40:29,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:40:30,844 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 [2021-11-12 22:40:31,145 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-12 22:40:31,145 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:40:31,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1668366297] [2021-11-12 22:40:31,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1668366297] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:40:31,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:40:31,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [12] total 18 [2021-11-12 22:40:31,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768259149] [2021-11-12 22:40:31,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:40:31,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-12 22:40:31,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:40:31,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-12 22:40:31,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2021-11-12 22:40:31,147 INFO L87 Difference]: Start difference. First operand 164 states and 201 transitions. Second operand has 13 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (24), 6 states have call predecessors, (24), 5 states have call successors, (24) [2021-11-12 22:40:33,345 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:40:34,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:40:34,360 INFO L93 Difference]: Finished difference Result 285 states and 343 transitions. [2021-11-12 22:40:34,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-12 22:40:34,363 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (24), 6 states have call predecessors, (24), 5 states have call successors, (24) Word has length 146 [2021-11-12 22:40:34,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:40:34,365 INFO L225 Difference]: With dead ends: 285 [2021-11-12 22:40:34,365 INFO L226 Difference]: Without dead ends: 171 [2021-11-12 22:40:34,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-11-12 22:40:34,366 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 13 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2988.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.85ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 3102.62ms IncrementalHoareTripleChecker+Time [2021-11-12 22:40:34,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 1047 Invalid, 135 Unknown, 0 Unchecked, 3.85ms Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 1 Unknown, 90 Unchecked, 3102.62ms Time] [2021-11-12 22:40:34,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-11-12 22:40:34,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2021-11-12 22:40:34,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 104 states have (on average 1.1057692307692308) internal successors, (115), 107 states have internal predecessors, (115), 47 states have call successors, (47), 20 states have call predecessors, (47), 19 states have return successors, (47), 44 states have call predecessors, (47), 45 states have call successors, (47) [2021-11-12 22:40:34,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 209 transitions. [2021-11-12 22:40:34,388 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 209 transitions. Word has length 146 [2021-11-12 22:40:34,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:40:34,389 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 209 transitions. [2021-11-12 22:40:34,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (25), 3 states have call predecessors, (25), 6 states have return successors, (24), 6 states have call predecessors, (24), 5 states have call successors, (24) [2021-11-12 22:40:34,389 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 209 transitions. [2021-11-12 22:40:34,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-12 22:40:34,393 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:40:34,393 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:40:34,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 22:40:34,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:40:34,615 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:40:34,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:40:34,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1761581361, now seen corresponding path program 1 times [2021-11-12 22:40:34,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:40:34,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482089414] [2021-11-12 22:40:34,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:40:34,619 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:40:34,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:40:34,621 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:40:34,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 22:40:38,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:40:38,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 1878 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:40:38,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:40:38,990 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-12 22:40:38,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:40:39,598 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-12 22:40:39,599 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:40:39,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482089414] [2021-11-12 22:40:39,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [482089414] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:40:39,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:40:39,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-12 22:40:39,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988506726] [2021-11-12 22:40:39,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:40:39,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:40:39,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:40:39,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:40:39,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-12 22:40:39,601 INFO L87 Difference]: Start difference. First operand 171 states and 209 transitions. Second operand has 6 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-12 22:40:39,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:40:39,821 INFO L93 Difference]: Finished difference Result 322 states and 392 transitions. [2021-11-12 22:40:39,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:40:39,822 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 150 [2021-11-12 22:40:39,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:40:39,824 INFO L225 Difference]: With dead ends: 322 [2021-11-12 22:40:39,824 INFO L226 Difference]: Without dead ends: 169 [2021-11-12 22:40:39,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:40:39,825 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 2 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 166.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.93ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 183.43ms IncrementalHoareTripleChecker+Time [2021-11-12 22:40:39,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 699 Invalid, 70 Unknown, 0 Unchecked, 1.93ms Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 183.43ms Time] [2021-11-12 22:40:39,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-11-12 22:40:39,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 165. [2021-11-12 22:40:39,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 100 states have (on average 1.09) internal successors, (109), 102 states have internal predecessors, (109), 47 states have call successors, (47), 20 states have call predecessors, (47), 17 states have return successors, (45), 43 states have call predecessors, (45), 45 states have call successors, (45) [2021-11-12 22:40:39,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 201 transitions. [2021-11-12 22:40:39,837 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 201 transitions. Word has length 150 [2021-11-12 22:40:39,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:40:39,838 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 201 transitions. [2021-11-12 22:40:39,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-12 22:40:39,838 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 201 transitions. [2021-11-12 22:40:39,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-12 22:40:39,841 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:40:39,841 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 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, 1, 1] [2021-11-12 22:40:39,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 22:40:40,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:40:40,063 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:40:40,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:40:40,064 INFO L85 PathProgramCache]: Analyzing trace with hash -672596795, now seen corresponding path program 1 times [2021-11-12 22:40:40,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:40:40,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [841962737] [2021-11-12 22:40:40,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:40:40,066 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:40:40,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:40:40,067 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:40:40,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c2db43-74f7-497a-87b2-aa990cf2078f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 22:43:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:43:04,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 1926 conjuncts, 102 conjunts are in the unsatisfiable core [2021-11-12 22:43:04,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:43:04,708 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 11 treesize of output 7 [2021-11-12 22:43:04,720 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 [2021-11-12 22:43:15,691 INFO L354 Elim1Store]: treesize reduction 1099, result has 7.0 percent of original size [2021-11-12 22:43:15,695 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 7 case distinctions, treesize of input 70 treesize of output 95 [2021-11-12 22:43:21,088 INFO L354 Elim1Store]: treesize reduction 322, result has 0.3 percent of original size [2021-11-12 22:43:21,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 158 treesize of output 66 [2021-11-12 22:43:22,568 INFO L354 Elim1Store]: treesize reduction 1099, result has 7.0 percent of original size [2021-11-12 22:43:22,568 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 7 case distinctions, treesize of input 70 treesize of output 95 [2021-11-12 22:43:26,890 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 8463 treesize of output 6415 [2021-11-12 22:43:26,900 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 6415 treesize of output 4367 [2021-11-12 22:43:26,923 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-12 22:43:26,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 4367 treesize of output 1295 [2021-11-12 22:43:29,099 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_21 (_ BitVec 8)) (v_arrayElimCell_20 (_ BitVec 8)) (v_arrayElimCell_22 (_ BitVec 8)) (|v_save_byte_from_hash_table_~#size_in_bytes~0#1.base_BEFORE_CALL_1| (_ BitVec 64)) (v_arrayElimCell_16 (_ BitVec 8)) (v_arrayElimCell_15 (_ BitVec 8)) (v_arrayElimCell_18 (_ BitVec 8)) (v_arrayElimCell_17 (_ BitVec 8)) (v_arrayElimCell_19 (_ BitVec 8)) (|v_save_byte_from_hash_table_~#size_in_bytes~0#1.offset_BEFORE_CALL_1| (_ BitVec 64))) (let ((.cse0 (bvadd (let ((.cse2 (bvmul (concat (concat (concat (concat (concat (concat (concat v_arrayElimCell_15 v_arrayElimCell_20) v_arrayElimCell_16) v_arrayElimCell_22) v_arrayElimCell_17) v_arrayElimCell_18) v_arrayElimCell_21) v_arrayElimCell_19) (_ bv24 64)))) (concat (concat (concat (concat (concat (concat (concat ((_ extract 63 56) .cse2) ((_ extract 55 48) .cse2)) ((_ extract 47 40) .cse2)) ((_ extract 39 32) .cse2)) ((_ extract 31 24) .cse2)) ((_ extract 23 16) .cse2)) ((_ extract 15 8) .cse2)) ((_ extract 7 0) .cse2))) (_ bv18446744073679922064 64))) (.cse1 (select |c_#memory_int| |v_save_byte_from_hash_table_~#size_in_bytes~0#1.base_BEFORE_CALL_1|))) (and (= ((_ extract 63 56) .cse0) (select .cse1 (bvadd |v_save_byte_from_hash_table_~#size_in_bytes~0#1.offset_BEFORE_CALL_1| (_ bv7 64)))) (= ((_ extract 55 48) .cse0) (select .cse1 (bvadd |v_save_byte_from_hash_table_~#size_in_bytes~0#1.offset_BEFORE_CALL_1| (_ bv6 64)))) (= ((_ extract 47 40) .cse0) (select .cse1 (bvadd |v_save_byte_from_hash_table_~#size_in_bytes~0#1.offset_BEFORE_CALL_1| (_ bv5 64)))) (= ((_ extract 31 24) .cse0) (select .cse1 (bvadd (_ bv3 64) |v_save_byte_from_hash_table_~#size_in_bytes~0#1.offset_BEFORE_CALL_1|))) (= ((_ extract 23 16) .cse0) (select .cse1 (bvadd |v_save_byte_from_hash_table_~#size_in_bytes~0#1.offset_BEFORE_CALL_1| (_ bv2 64)))) (= (select .cse1 |v_save_byte_from_hash_table_~#size_in_bytes~0#1.offset_BEFORE_CALL_1|) ((_ extract 7 0) .cse0)) (= (select .cse1 (bvadd |v_save_byte_from_hash_table_~#size_in_bytes~0#1.offset_BEFORE_CALL_1| (_ bv1 64))) ((_ extract 15 8) .cse0)) (= ((_ extract 39 32) .cse0) (select .cse1 (bvadd |v_save_byte_from_hash_table_~#size_in_bytes~0#1.offset_BEFORE_CALL_1| (_ bv4 64))))))) is different from true [2021-11-12 22:43:38,101 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 4 not checked. [2021-11-12 22:43:38,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:43:47,295 WARN L227 SmtUtils]: Spent 5.96s on a formula simplification that was a NOOP. DAG size: 168 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-12 22:43:51,660 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 1751465 treesize of output 1748273