./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/memset_override_0_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_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/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_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/memset_override_0_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/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_f2b93d5f-45f0-4022-b933-69f376a7403a/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 5db0d3c47797ff0a215821e8d5fa38ab9190be93d125d3ffd24136b371560f6c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:06:41,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:06:41,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:06:41,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:06:41,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:06:41,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:06:41,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:06:41,132 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:06:41,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:06:41,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:06:41,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:06:41,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:06:41,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:06:41,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:06:41,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:06:41,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:06:41,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:06:41,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:06:41,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:06:41,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:06:41,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:06:41,156 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:06:41,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:06:41,158 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:06:41,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:06:41,163 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:06:41,163 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:06:41,164 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:06:41,165 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:06:41,166 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:06:41,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:06:41,168 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:06:41,169 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:06:41,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:06:41,171 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:06:41,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:06:41,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:06:41,173 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:06:41,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:06:41,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:06:41,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:06:41,176 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 23:06:41,200 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:06:41,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:06:41,201 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:06:41,205 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:06:41,205 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:06:41,205 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:06:41,206 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:06:41,206 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:06:41,210 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:06:41,210 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:06:41,210 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:06:41,210 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:06:41,211 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:06:41,211 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:06:41,211 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:06:41,211 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:06:41,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:06:41,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:06:41,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:06:41,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:06:41,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:06:41,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:06:41,215 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:06:41,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:06:41,215 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:06:41,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:06:41,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:06:41,216 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:06:41,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:06:41,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:06:41,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:06:41,217 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:06:41,217 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:06:41,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:06:41,218 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:06:41,218 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:06:41,218 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:06:41,219 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_f2b93d5f-45f0-4022-b933-69f376a7403a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5db0d3c47797ff0a215821e8d5fa38ab9190be93d125d3ffd24136b371560f6c [2021-11-12 23:06:41,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:06:41,559 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:06:41,561 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:06:41,563 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:06:41,564 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:06:41,565 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2021-11-12 23:06:41,643 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/data/a2376a113/5d3c6d329ff24fdfb44ee8d5b919bcd2/FLAG3fdc5f85b [2021-11-12 23:06:42,413 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:06:42,415 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2021-11-12 23:06:42,470 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/data/a2376a113/5d3c6d329ff24fdfb44ee8d5b919bcd2/FLAG3fdc5f85b [2021-11-12 23:06:42,977 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/data/a2376a113/5d3c6d329ff24fdfb44ee8d5b919bcd2 [2021-11-12 23:06:42,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:06:42,981 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:06:42,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:06:42,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:06:42,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:06:42,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:06:42" (1/1) ... [2021-11-12 23:06:42,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70e12132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:42, skipping insertion in model container [2021-11-12 23:06:42,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:06:42" (1/1) ... [2021-11-12 23:06:42,998 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:06:43,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:06:43,419 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_f2b93d5f-45f0-4022-b933-69f376a7403a/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4491,4504] [2021-11-12 23:06:43,429 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_f2b93d5f-45f0-4022-b933-69f376a7403a/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4551,4564] [2021-11-12 23:06:43,451 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:06:43,458 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:06:44,147 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:44,148 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:44,148 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:44,149 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:44,150 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:44,165 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:44,165 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:44,168 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:44,168 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:44,171 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:44,172 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:44,173 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:44,173 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:44,361 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:06:44,363 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:06:44,364 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:06:44,366 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:06:44,368 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:06:44,368 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:06:44,369 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:06:44,370 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:06:44,371 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:06:44,372 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:06:44,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:06:44,467 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 23:06:44,468 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@20409177 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:44, skipping insertion in model container [2021-11-12 23:06:44,468 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:06:44,469 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:06:44,471 INFO L158 Benchmark]: Toolchain (without parser) took 1488.20ms. Allocated memory is still 104.9MB. Free memory was 80.9MB in the beginning and 56.2MB in the end (delta: 24.8MB). Peak memory consumption was 23.5MB. Max. memory is 16.1GB. [2021-11-12 23:06:44,472 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 104.9MB. Free memory is still 79.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:06:44,473 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1485.38ms. Allocated memory is still 104.9MB. Free memory was 80.6MB in the beginning and 56.2MB in the end (delta: 24.4MB). Peak memory consumption was 23.5MB. Max. memory is 16.1GB. [2021-11-12 23:06:44,474 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 104.9MB. Free memory is still 79.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1485.38ms. Allocated memory is still 104.9MB. Free memory was 80.6MB in the beginning and 56.2MB in the end (delta: 24.4MB). Peak memory consumption was 23.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5888]: 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_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/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_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/memset_override_0_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/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_f2b93d5f-45f0-4022-b933-69f376a7403a/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 5db0d3c47797ff0a215821e8d5fa38ab9190be93d125d3ffd24136b371560f6c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:06:46,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:06:46,946 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:06:46,998 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:06:46,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:06:47,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:06:47,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:06:47,006 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:06:47,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:06:47,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:06:47,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:06:47,014 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:06:47,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:06:47,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:06:47,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:06:47,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:06:47,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:06:47,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:06:47,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:06:47,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:06:47,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:06:47,043 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:06:47,045 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:06:47,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:06:47,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:06:47,057 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:06:47,058 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:06:47,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:06:47,069 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:06:47,070 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:06:47,071 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:06:47,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:06:47,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:06:47,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:06:47,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:06:47,078 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:06:47,079 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:06:47,079 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:06:47,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:06:47,081 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:06:47,082 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:06:47,083 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 23:06:47,128 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:06:47,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:06:47,130 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:06:47,130 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:06:47,130 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:06:47,131 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:06:47,131 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:06:47,131 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:06:47,131 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:06:47,131 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:06:47,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:06:47,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:06:47,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:06:47,135 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:06:47,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:06:47,135 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:06:47,135 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:06:47,135 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:06:47,136 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:06:47,136 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:06:47,136 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:06:47,136 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:06:47,137 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:06:47,137 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:06:47,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:06:47,137 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:06:47,138 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:06:47,138 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:06:47,138 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:06:47,138 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:06:47,138 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:06:47,139 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:06:47,139 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:06:47,139 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_f2b93d5f-45f0-4022-b933-69f376a7403a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5db0d3c47797ff0a215821e8d5fa38ab9190be93d125d3ffd24136b371560f6c [2021-11-12 23:06:47,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:06:47,602 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:06:47,605 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:06:47,608 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:06:47,609 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:06:47,611 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2021-11-12 23:06:47,692 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/data/81d235175/3d679d0077b545489008cc1286ce0d0f/FLAG1f1b6d4a0 [2021-11-12 23:06:48,697 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:06:48,698 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i [2021-11-12 23:06:48,737 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/data/81d235175/3d679d0077b545489008cc1286ce0d0f/FLAG1f1b6d4a0 [2021-11-12 23:06:49,137 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/data/81d235175/3d679d0077b545489008cc1286ce0d0f [2021-11-12 23:06:49,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:06:49,141 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:06:49,142 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:06:49,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:06:49,147 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:06:49,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:06:49" (1/1) ... [2021-11-12 23:06:49,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40affa23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:49, skipping insertion in model container [2021-11-12 23:06:49,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:06:49" (1/1) ... [2021-11-12 23:06:49,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:06:49,280 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:06:49,584 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_f2b93d5f-45f0-4022-b933-69f376a7403a/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4491,4504] [2021-11-12 23:06:49,591 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_f2b93d5f-45f0-4022-b933-69f376a7403a/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4551,4564] [2021-11-12 23:06:49,613 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:06:49,619 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:06:50,875 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:50,879 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:50,880 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:50,882 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:50,884 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:50,907 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:50,908 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:50,914 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:50,915 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:50,919 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:50,921 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:50,924 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:50,925 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:51,281 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:06:51,282 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:06:51,284 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:06:51,285 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:06:51,287 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:06:51,288 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:06:51,289 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:06:51,290 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:06:51,291 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:06:51,292 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:06:51,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:06:51,400 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:06:51,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:06:51,433 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_f2b93d5f-45f0-4022-b933-69f376a7403a/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4491,4504] [2021-11-12 23:06:51,434 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_f2b93d5f-45f0-4022-b933-69f376a7403a/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4551,4564] [2021-11-12 23:06:51,435 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:06:51,436 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:06:51,501 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:51,502 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:51,502 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:51,503 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:51,504 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:51,513 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:51,514 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:51,515 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:51,516 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:51,518 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:51,518 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:51,519 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:51,520 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:51,541 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:06:51,542 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:06:51,543 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:06:51,544 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:06:51,545 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:06:51,546 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:06:51,547 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:06:51,547 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:06:51,548 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:06:51,548 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:06:51,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:06:51,575 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:06:51,589 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_f2b93d5f-45f0-4022-b933-69f376a7403a/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4491,4504] [2021-11-12 23:06:51,590 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_f2b93d5f-45f0-4022-b933-69f376a7403a/sv-benchmarks/c/aws-c-common/memset_override_0_harness.i[4551,4564] [2021-11-12 23:06:51,591 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:06:51,592 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:06:51,664 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:51,667 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:51,667 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:51,667 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:51,669 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:51,686 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:51,687 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:51,688 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:51,689 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:51,690 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:51,695 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:51,695 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:51,696 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:06:51,717 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:06:51,718 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:06:51,719 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:06:51,720 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:06:51,721 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:06:51,722 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:06:51,722 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:06:51,723 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:06:51,724 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:06:51,724 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:06:51,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:06:51,951 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:06:51,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:51 WrapperNode [2021-11-12 23:06:51,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:06:51,953 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:06:51,953 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:06:51,953 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:06:51,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:51" (1/1) ... [2021-11-12 23:06:52,075 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:51" (1/1) ... [2021-11-12 23:06:52,112 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:06:52,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:06:52,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:06:52,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:06:52,123 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:51" (1/1) ... [2021-11-12 23:06:52,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:51" (1/1) ... [2021-11-12 23:06:52,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:51" (1/1) ... [2021-11-12 23:06:52,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:51" (1/1) ... [2021-11-12 23:06:52,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:51" (1/1) ... [2021-11-12 23:06:52,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:51" (1/1) ... [2021-11-12 23:06:52,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:51" (1/1) ... [2021-11-12 23:06:52,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:06:52,187 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:06:52,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:06:52,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:06:52,189 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:51" (1/1) ... [2021-11-12 23:06:52,213 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:06:52,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:06:52,247 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:06:52,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:06:52,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:06:52,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:06:52,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 23:06:52,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 23:06:52,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:06:52,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:06:52,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:06:52,312 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 23:06:52,312 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 23:06:52,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:06:52,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 23:06:52,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 23:06:52,313 INFO L130 BoogieDeclarations]: Found specification of procedure assert_all_bytes_are [2021-11-12 23:06:52,313 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_all_bytes_are [2021-11-12 23:06:52,313 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-12 23:06:52,314 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-12 23:06:52,985 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:06:52,985 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-12 23:06:52,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:06:52 BoogieIcfgContainer [2021-11-12 23:06:52,988 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:06:52,990 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:06:52,990 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:06:53,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:06:53,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:06:49" (1/3) ... [2021-11-12 23:06:53,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cff6275 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:06:53, skipping insertion in model container [2021-11-12 23:06:53,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:06:51" (2/3) ... [2021-11-12 23:06:53,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cff6275 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:06:53, skipping insertion in model container [2021-11-12 23:06:53,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:06:52" (3/3) ... [2021-11-12 23:06:53,004 INFO L111 eAbstractionObserver]: Analyzing ICFG memset_override_0_harness.i [2021-11-12 23:06:53,010 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:06:53,010 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:06:53,059 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:06:53,065 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:06:53,066 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:06:53,085 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 40 states have internal predecessors, (49), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-12 23:06:53,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-12 23:06:53,093 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:06:53,094 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:06:53,094 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:06:53,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:06:53,101 INFO L85 PathProgramCache]: Analyzing trace with hash 16590849, now seen corresponding path program 1 times [2021-11-12 23:06:53,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:06:53,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [421516431] [2021-11-12 23:06:53,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:06:53,120 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:06:53,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:06:53,124 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:06:53,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:06:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:06:53,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:06:53,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:06:53,568 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-12 23:06:53,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:06:53,666 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-12 23:06:53,667 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:06:53,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [421516431] [2021-11-12 23:06:53,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [421516431] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:06:53,669 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:06:53,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:06:53,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130824876] [2021-11-12 23:06:53,672 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:06:53,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:06:53,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:06:53,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:06:53,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:06:53,739 INFO L87 Difference]: Start difference. First operand has 60 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 40 states have internal predecessors, (49), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-12 23:06:53,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:06:53,795 INFO L93 Difference]: Finished difference Result 117 states and 167 transitions. [2021-11-12 23:06:53,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:06:53,798 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 36 [2021-11-12 23:06:53,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:06:53,815 INFO L225 Difference]: With dead ends: 117 [2021-11-12 23:06:53,815 INFO L226 Difference]: Without dead ends: 52 [2021-11-12 23:06:53,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:06:53,830 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.09ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:06:53,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 4.09ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:06:53,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-12 23:06:53,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-11-12 23:06:53,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 34 states have internal predecessors, (38), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-12 23:06:53,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2021-11-12 23:06:53,877 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 36 [2021-11-12 23:06:53,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:06:53,878 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2021-11-12 23:06:53,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-12 23:06:53,879 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2021-11-12 23:06:53,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-12 23:06:53,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:06:53,881 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:06:53,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-12 23:06:54,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:06:54,094 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:06:54,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:06:54,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1271235587, now seen corresponding path program 1 times [2021-11-12 23:06:54,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:06:54,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [66367371] [2021-11-12 23:06:54,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:06:54,096 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:06:54,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:06:54,097 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:06:54,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:06:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:06:54,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:06:54,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:06:54,435 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-12 23:06:54,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:06:54,635 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-12 23:06:54,635 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:06:54,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [66367371] [2021-11-12 23:06:54,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [66367371] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:06:54,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2112370003] [2021-11-12 23:06:54,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:06:54,637 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:06:54,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:06:54,645 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:06:54,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-11-12 23:06:54,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:06:54,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:06:54,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:06:55,043 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-12 23:06:55,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:06:55,173 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-12 23:06:55,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2112370003] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:06:55,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826632024] [2021-11-12 23:06:55,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:06:55,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:06:55,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:06:55,186 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:06:55,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-12 23:06:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:06:55,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-12 23:06:55,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:06:55,511 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-12 23:06:55,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:06:55,722 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-12 23:06:55,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826632024] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:06:55,722 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 23:06:55,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 9] total 12 [2021-11-12 23:06:55,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887565722] [2021-11-12 23:06:55,724 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 23:06:55,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 23:06:55,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:06:55,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 23:06:55,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:06:55,726 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-12 23:06:56,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:06:56,007 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2021-11-12 23:06:56,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 23:06:56,009 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 36 [2021-11-12 23:06:56,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:06:56,010 INFO L225 Difference]: With dead ends: 58 [2021-11-12 23:06:56,010 INFO L226 Difference]: Without dead ends: 56 [2021-11-12 23:06:56,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:06:56,012 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 46 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 158.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.42ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 204.13ms IncrementalHoareTripleChecker+Time [2021-11-12 23:06:56,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 429 Invalid, 150 Unknown, 0 Unchecked, 8.42ms Time], IncrementalHoareTripleChecker [17 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 204.13ms Time] [2021-11-12 23:06:56,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-12 23:06:56,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-11-12 23:06:56,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 37 states have internal predecessors, (41), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-12 23:06:56,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2021-11-12 23:06:56,039 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 36 [2021-11-12 23:06:56,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:06:56,041 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2021-11-12 23:06:56,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-12 23:06:56,043 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2021-11-12 23:06:56,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-12 23:06:56,050 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:06:56,052 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-11-12 23:06:56,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:06:56,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:06:56,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:06:56,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:06:56,664 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:06:56,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:06:56,665 INFO L85 PathProgramCache]: Analyzing trace with hash 2010040638, now seen corresponding path program 1 times [2021-11-12 23:06:56,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:06:56,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [174802628] [2021-11-12 23:06:56,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:06:56,667 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:06:56,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:06:56,668 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:06:56,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:06:56,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:06:56,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:06:56,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:06:57,272 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-12 23:06:57,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:06:57,663 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-12 23:06:57,663 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:06:57,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [174802628] [2021-11-12 23:06:57,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [174802628] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:06:57,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1023067075] [2021-11-12 23:06:57,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:06:57,664 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:06:57,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:06:57,666 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:06:57,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-12 23:06:57,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:06:57,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:06:57,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:06:58,366 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-12 23:06:58,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:06:58,582 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-12 23:06:58,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1023067075] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:06:58,583 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:06:58,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [9, 9] total 18 [2021-11-12 23:06:58,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016842501] [2021-11-12 23:06:58,584 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:06:58,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-12 23:06:58,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:06:58,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-12 23:06:58,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-11-12 23:06:58,585 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand has 13 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 6 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2021-11-12 23:06:58,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:06:58,928 INFO L93 Difference]: Finished difference Result 83 states and 104 transitions. [2021-11-12 23:06:58,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-12 23:06:58,929 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 6 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 42 [2021-11-12 23:06:58,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:06:58,932 INFO L225 Difference]: With dead ends: 83 [2021-11-12 23:06:58,932 INFO L226 Difference]: Without dead ends: 81 [2021-11-12 23:06:58,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 145 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2021-11-12 23:06:58,934 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 42 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 158.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.89ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 196.38ms IncrementalHoareTripleChecker+Time [2021-11-12 23:06:58,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 742 Invalid, 116 Unknown, 0 Unchecked, 6.89ms Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 6 Unchecked, 196.38ms Time] [2021-11-12 23:06:58,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-12 23:06:58,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 66. [2021-11-12 23:06:58,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 42 states have (on average 1.119047619047619) internal successors, (47), 44 states have internal predecessors, (47), 18 states have call successors, (18), 6 states have call predecessors, (18), 5 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 23:06:58,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 81 transitions. [2021-11-12 23:06:58,951 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 81 transitions. Word has length 42 [2021-11-12 23:06:58,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:06:58,952 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 81 transitions. [2021-11-12 23:06:58,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 6 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2021-11-12 23:06:58,952 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 81 transitions. [2021-11-12 23:06:58,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-12 23:06:58,954 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:06:58,954 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-11-12 23:06:58,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:06:59,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:06:59,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:06:59,357 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:06:59,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:06:59,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1722148702, now seen corresponding path program 1 times [2021-11-12 23:06:59,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:06:59,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451410867] [2021-11-12 23:06:59,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:06:59,360 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:06:59,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:06:59,361 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:06:59,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:06:59,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:06:59,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:06:59,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:06:59,896 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-12 23:06:59,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:07:00,241 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-12 23:07:00,241 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:07:00,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451410867] [2021-11-12 23:07:00,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1451410867] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:07:00,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [854583050] [2021-11-12 23:07:00,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:07:00,242 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:07:00,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:07:00,243 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:07:00,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-12 23:07:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:07:00,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:07:00,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:07:00,527 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-12 23:07:00,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:07:00,668 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-12 23:07:00,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [854583050] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:07:00,669 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:07:00,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [9, 9] total 16 [2021-11-12 23:07:00,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815260230] [2021-11-12 23:07:00,670 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:07:00,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:07:00,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:07:00,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:07:00,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:07:00,673 INFO L87 Difference]: Start difference. First operand 66 states and 81 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-12 23:07:00,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:07:00,713 INFO L93 Difference]: Finished difference Result 113 states and 136 transitions. [2021-11-12 23:07:00,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:07:00,715 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 43 [2021-11-12 23:07:00,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:07:00,718 INFO L225 Difference]: With dead ends: 113 [2021-11-12 23:07:00,726 INFO L226 Difference]: Without dead ends: 68 [2021-11-12 23:07:00,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 153 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:07:00,729 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 2 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.54ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.70ms IncrementalHoareTripleChecker+Time [2021-11-12 23:07:00,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 124 Invalid, 8 Unknown, 0 Unchecked, 1.54ms Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 25.70ms Time] [2021-11-12 23:07:00,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-12 23:07:00,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2021-11-12 23:07:00,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 45 states have internal predecessors, (48), 18 states have call successors, (18), 6 states have call predecessors, (18), 5 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 23:07:00,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 82 transitions. [2021-11-12 23:07:00,745 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 82 transitions. Word has length 43 [2021-11-12 23:07:00,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:07:00,745 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 82 transitions. [2021-11-12 23:07:00,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-12 23:07:00,746 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 82 transitions. [2021-11-12 23:07:00,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-12 23:07:00,747 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:07:00,748 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-11-12 23:07:00,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:07:00,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:07:01,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:07:01,165 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:07:01,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:07:01,166 INFO L85 PathProgramCache]: Analyzing trace with hash 982661572, now seen corresponding path program 1 times [2021-11-12 23:07:01,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:07:01,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1056853241] [2021-11-12 23:07:01,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:07:01,167 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:07:01,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:07:01,168 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:07:01,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:07:01,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:07:01,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:07:01,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:07:01,692 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-12 23:07:01,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:07:02,083 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-12 23:07:02,083 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:07:02,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1056853241] [2021-11-12 23:07:02,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1056853241] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:07:02,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2005986996] [2021-11-12 23:07:02,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:07:02,084 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:07:02,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:07:02,085 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:07:02,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-12 23:07:02,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:07:02,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-12 23:07:02,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:07:02,926 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-12 23:07:02,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:07:03,479 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-12 23:07:03,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2005986996] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:07:03,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950807402] [2021-11-12 23:07:03,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:07:03,480 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:07:03,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:07:03,482 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:07:03,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-12 23:07:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:07:03,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:07:03,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:07:04,022 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-12 23:07:04,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:07:04,455 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-12 23:07:04,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950807402] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:07:04,456 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 23:07:04,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8, 8, 9, 9] total 23 [2021-11-12 23:07:04,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762459656] [2021-11-12 23:07:04,457 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 23:07:04,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-12 23:07:04,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:07:04,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-12 23:07:04,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:07:04,460 INFO L87 Difference]: Start difference. First operand 67 states and 82 transitions. Second operand has 23 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 20 states have internal predecessors, (53), 10 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2021-11-12 23:07:05,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:07:05,352 INFO L93 Difference]: Finished difference Result 120 states and 144 transitions. [2021-11-12 23:07:05,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 23:07:05,353 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 20 states have internal predecessors, (53), 10 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) Word has length 45 [2021-11-12 23:07:05,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:07:05,365 INFO L225 Difference]: With dead ends: 120 [2021-11-12 23:07:05,366 INFO L226 Difference]: Without dead ends: 75 [2021-11-12 23:07:05,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 242 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=134, Invalid=858, Unknown=0, NotChecked=0, Total=992 [2021-11-12 23:07:05,368 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 16 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 210.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.86ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 251.16ms IncrementalHoareTripleChecker+Time [2021-11-12 23:07:05,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 821 Invalid, 180 Unknown, 0 Unchecked, 6.86ms Time], IncrementalHoareTripleChecker [1 Valid, 139 Invalid, 0 Unknown, 40 Unchecked, 251.16ms Time] [2021-11-12 23:07:05,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-11-12 23:07:05,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 65. [2021-11-12 23:07:05,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 45 states have internal predecessors, (49), 15 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-12 23:07:05,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 77 transitions. [2021-11-12 23:07:05,384 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 77 transitions. Word has length 45 [2021-11-12 23:07:05,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:07:05,385 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 77 transitions. [2021-11-12 23:07:05,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 20 states have internal predecessors, (53), 10 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2021-11-12 23:07:05,386 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 77 transitions. [2021-11-12 23:07:05,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-12 23:07:05,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:07:05,387 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 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] [2021-11-12 23:07:05,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-12 23:07:05,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:07:05,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:07:06,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:07:06,006 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:07:06,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:07:06,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1110629482, now seen corresponding path program 1 times [2021-11-12 23:07:06,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:07:06,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [403052194] [2021-11-12 23:07:06,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:07:06,007 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:07:06,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:07:06,008 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:07:06,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 23:07:06,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:07:06,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:07:06,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:07:06,428 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-12 23:07:06,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:07:06,696 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-12 23:07:06,697 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:07:06,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [403052194] [2021-11-12 23:07:06,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [403052194] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:07:06,697 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:07:06,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-12 23:07:06,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963429220] [2021-11-12 23:07:06,698 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:07:06,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:07:06,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:07:06,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:07:06,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:07:06,712 INFO L87 Difference]: Start difference. First operand 65 states and 77 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-12 23:07:06,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:07:06,857 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2021-11-12 23:07:06,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:07:06,858 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 51 [2021-11-12 23:07:06,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:07:06,860 INFO L225 Difference]: With dead ends: 71 [2021-11-12 23:07:06,860 INFO L226 Difference]: Without dead ends: 69 [2021-11-12 23:07:06,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:07:06,862 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 25 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.29ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 102.13ms IncrementalHoareTripleChecker+Time [2021-11-12 23:07:06,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 309 Invalid, 58 Unknown, 0 Unchecked, 2.29ms Time], IncrementalHoareTripleChecker [9 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 102.13ms Time] [2021-11-12 23:07:06,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-12 23:07:06,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-11-12 23:07:06,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 48 states have internal predecessors, (52), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-12 23:07:06,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 80 transitions. [2021-11-12 23:07:06,876 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 80 transitions. Word has length 51 [2021-11-12 23:07:06,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:07:06,877 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 80 transitions. [2021-11-12 23:07:06,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-12 23:07:06,878 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 80 transitions. [2021-11-12 23:07:06,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-12 23:07:06,880 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:07:06,880 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:07:06,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-12 23:07:07,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:07:07,093 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:07:07,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:07:07,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1132287315, now seen corresponding path program 1 times [2021-11-12 23:07:07,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:07:07,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945871618] [2021-11-12 23:07:07,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:07:07,095 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:07:07,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:07:07,097 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:07:07,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 23:07:07,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:07:07,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-12 23:07:07,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:07:07,677 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-12 23:07:07,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:07:07,963 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-12 23:07:07,964 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:07:07,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1945871618] [2021-11-12 23:07:07,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1945871618] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:07:07,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:07:07,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2021-11-12 23:07:07,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787076133] [2021-11-12 23:07:07,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:07:07,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:07:07,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:07:07,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:07:07,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-12 23:07:07,967 INFO L87 Difference]: Start difference. First operand 69 states and 80 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-11-12 23:07:08,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:07:08,125 INFO L93 Difference]: Finished difference Result 112 states and 131 transitions. [2021-11-12 23:07:08,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:07:08,130 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 68 [2021-11-12 23:07:08,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:07:08,131 INFO L225 Difference]: With dead ends: 112 [2021-11-12 23:07:08,131 INFO L226 Difference]: Without dead ends: 84 [2021-11-12 23:07:08,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:07:08,133 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 31 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 86.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.61ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 122.01ms IncrementalHoareTripleChecker+Time [2021-11-12 23:07:08,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 191 Invalid, 37 Unknown, 0 Unchecked, 1.61ms Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 122.01ms Time] [2021-11-12 23:07:08,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-11-12 23:07:08,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2021-11-12 23:07:08,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 57 states have internal predecessors, (62), 19 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-12 23:07:08,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 98 transitions. [2021-11-12 23:07:08,152 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 98 transitions. Word has length 68 [2021-11-12 23:07:08,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:07:08,153 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 98 transitions. [2021-11-12 23:07:08,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-11-12 23:07:08,153 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 98 transitions. [2021-11-12 23:07:08,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-12 23:07:08,155 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:07:08,156 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:07:08,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-12 23:07:08,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:07:08,369 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:07:08,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:07:08,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1383518092, now seen corresponding path program 1 times [2021-11-12 23:07:08,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:07:08,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1815489461] [2021-11-12 23:07:08,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:07:08,371 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:07:08,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:07:08,373 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:07:08,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-12 23:07:08,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:07:08,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-12 23:07:08,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:07:08,983 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-12 23:07:08,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:07:09,310 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-12 23:07:09,310 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:07:09,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1815489461] [2021-11-12 23:07:09,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1815489461] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:07:09,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:07:09,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 13 [2021-11-12 23:07:09,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053563563] [2021-11-12 23:07:09,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:07:09,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:07:09,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:07:09,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:07:09,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:07:09,312 INFO L87 Difference]: Start difference. First operand 82 states and 98 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 4 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-12 23:07:09,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:07:09,488 INFO L93 Difference]: Finished difference Result 104 states and 119 transitions. [2021-11-12 23:07:09,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:07:09,489 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 4 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 72 [2021-11-12 23:07:09,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:07:09,491 INFO L225 Difference]: With dead ends: 104 [2021-11-12 23:07:09,491 INFO L226 Difference]: Without dead ends: 69 [2021-11-12 23:07:09,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-12 23:07:09,493 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 25 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 119.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.54ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 146.31ms IncrementalHoareTripleChecker+Time [2021-11-12 23:07:09,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 315 Invalid, 50 Unknown, 0 Unchecked, 2.54ms Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 146.31ms Time] [2021-11-12 23:07:09,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-12 23:07:09,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-11-12 23:07:09,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 48 states have internal predecessors, (51), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-12 23:07:09,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2021-11-12 23:07:09,522 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 72 [2021-11-12 23:07:09,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:07:09,523 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2021-11-12 23:07:09,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 4 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-12 23:07:09,524 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2021-11-12 23:07:09,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-12 23:07:09,527 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:07:09,527 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:07:09,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-12 23:07:09,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:07:09,728 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:07:09,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:07:09,729 INFO L85 PathProgramCache]: Analyzing trace with hash 511671837, now seen corresponding path program 1 times [2021-11-12 23:07:09,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:07:09,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [934439023] [2021-11-12 23:07:09,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:07:09,730 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:07:09,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:07:09,731 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:07:09,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-12 23:07:09,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:07:09,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-12 23:07:09,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:07:10,711 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 38 proven. 15 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-12 23:07:10,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:07:11,532 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-12 23:07:11,532 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:07:11,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [934439023] [2021-11-12 23:07:11,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [934439023] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:07:11,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1456045920] [2021-11-12 23:07:11,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:07:11,533 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:07:11,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:07:11,534 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:07:11,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-12 23:07:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:07:11,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-12 23:07:11,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:07:12,777 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 35 proven. 15 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-12 23:07:12,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:07:13,719 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-12 23:07:13,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1456045920] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:07:13,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403513471] [2021-11-12 23:07:13,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:07:13,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:07:13,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:07:13,721 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:07:13,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-12 23:07:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:07:13,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-12 23:07:13,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:07:14,661 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 35 proven. 9 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-12 23:07:14,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:07:15,390 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-12 23:07:15,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403513471] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:07:15,391 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 23:07:15,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 11, 11, 10, 10] total 39 [2021-11-12 23:07:15,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384564314] [2021-11-12 23:07:15,391 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 23:07:15,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-12 23:07:15,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:07:15,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-12 23:07:15,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1280, Unknown=0, NotChecked=0, Total=1482 [2021-11-12 23:07:15,395 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand has 39 states, 39 states have (on average 2.2564102564102564) internal successors, (88), 34 states have internal predecessors, (88), 16 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (34), 17 states have call predecessors, (34), 16 states have call successors, (34) [2021-11-12 23:07:17,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:07:17,534 INFO L93 Difference]: Finished difference Result 131 states and 151 transitions. [2021-11-12 23:07:17,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-12 23:07:17,535 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.2564102564102564) internal successors, (88), 34 states have internal predecessors, (88), 16 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (34), 17 states have call predecessors, (34), 16 states have call successors, (34) Word has length 75 [2021-11-12 23:07:17,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:07:17,536 INFO L225 Difference]: With dead ends: 131 [2021-11-12 23:07:17,536 INFO L226 Difference]: Without dead ends: 78 [2021-11-12 23:07:17,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 410 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 800 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=438, Invalid=2318, Unknown=0, NotChecked=0, Total=2756 [2021-11-12 23:07:17,539 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 15 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 390.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.06ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 437.66ms IncrementalHoareTripleChecker+Time [2021-11-12 23:07:17,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 942 Invalid, 193 Unknown, 0 Unchecked, 5.06ms Time], IncrementalHoareTripleChecker [1 Valid, 168 Invalid, 0 Unknown, 24 Unchecked, 437.66ms Time] [2021-11-12 23:07:17,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-11-12 23:07:17,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-11-12 23:07:17,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 56 states have (on average 1.0714285714285714) internal successors, (60), 57 states have internal predecessors, (60), 15 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-12 23:07:17,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 88 transitions. [2021-11-12 23:07:17,551 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 88 transitions. Word has length 75 [2021-11-12 23:07:17,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:07:17,552 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 88 transitions. [2021-11-12 23:07:17,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.2564102564102564) internal successors, (88), 34 states have internal predecessors, (88), 16 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (34), 17 states have call predecessors, (34), 16 states have call successors, (34) [2021-11-12 23:07:17,552 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 88 transitions. [2021-11-12 23:07:17,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-12 23:07:17,554 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:07:17,554 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:07:17,589 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-11-12 23:07:17,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-12 23:07:17,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-12 23:07:18,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:07:18,170 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:07:18,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:07:18,170 INFO L85 PathProgramCache]: Analyzing trace with hash -2075883641, now seen corresponding path program 1 times [2021-11-12 23:07:18,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:07:18,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1280746289] [2021-11-12 23:07:18,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:07:18,171 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:07:18,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:07:18,173 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:07:18,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-12 23:07:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:07:18,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-12 23:07:18,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:07:19,483 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 38 proven. 55 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-12 23:07:19,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:07:20,973 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 9 proven. 61 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-12 23:07:20,973 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:07:20,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1280746289] [2021-11-12 23:07:20,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1280746289] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:07:20,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1448026279] [2021-11-12 23:07:20,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:07:20,974 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:07:20,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:07:20,975 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:07:20,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-12 23:07:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:07:21,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-12 23:07:21,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:07:22,492 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 33 proven. 49 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-12 23:07:22,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:07:25,557 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 49 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-12 23:07:25,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1448026279] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:07:25,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451445875] [2021-11-12 23:07:25,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:07:25,558 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:07:25,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:07:25,564 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:07:25,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-12 23:07:25,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:07:25,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-12 23:07:25,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:07:27,033 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 38 proven. 55 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-12 23:07:27,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:07:33,118 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 6 proven. 50 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-12 23:07:33,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451445875] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:07:33,118 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 23:07:33,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14, 14, 16, 18] total 75 [2021-11-12 23:07:33,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809794381] [2021-11-12 23:07:33,119 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 23:07:33,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2021-11-12 23:07:33,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:07:33,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-11-12 23:07:33,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=711, Invalid=4839, Unknown=0, NotChecked=0, Total=5550 [2021-11-12 23:07:33,126 INFO L87 Difference]: Start difference. First operand 78 states and 88 transitions. Second operand has 75 states, 74 states have (on average 2.108108108108108) internal successors, (156), 72 states have internal predecessors, (156), 16 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (34), 17 states have call predecessors, (34), 16 states have call successors, (34) [2021-11-12 23:08:01,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:08:01,428 INFO L93 Difference]: Finished difference Result 196 states and 239 transitions. [2021-11-12 23:08:01,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-12 23:08:01,430 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 74 states have (on average 2.108108108108108) internal successors, (156), 72 states have internal predecessors, (156), 16 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (34), 17 states have call predecessors, (34), 16 states have call successors, (34) Word has length 85 [2021-11-12 23:08:01,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:08:01,433 INFO L225 Difference]: With dead ends: 196 [2021-11-12 23:08:01,433 INFO L226 Difference]: Without dead ends: 142 [2021-11-12 23:08:01,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 438 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 3201 ImplicationChecksByTransitivity, 33.2s TimeCoverageRelationStatistics Valid=1488, Invalid=9224, Unknown=0, NotChecked=0, Total=10712 [2021-11-12 23:08:01,439 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 392 mSDsluCounter, 1748 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5791.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 1837 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.76ms SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 6416.30ms IncrementalHoareTripleChecker+Time [2021-11-12 23:08:01,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [396 Valid, 1837 Invalid, 1344 Unknown, 0 Unchecked, 18.76ms Time], IncrementalHoareTripleChecker [267 Valid, 1011 Invalid, 0 Unknown, 66 Unchecked, 6416.30ms Time] [2021-11-12 23:08:01,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-11-12 23:08:01,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 105. [2021-11-12 23:08:01,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 80 states have (on average 1.15) internal successors, (92), 81 states have internal predecessors, (92), 18 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-12 23:08:01,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 126 transitions. [2021-11-12 23:08:01,465 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 126 transitions. Word has length 85 [2021-11-12 23:08:01,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:08:01,466 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 126 transitions. [2021-11-12 23:08:01,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 74 states have (on average 2.108108108108108) internal successors, (156), 72 states have internal predecessors, (156), 16 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (34), 17 states have call predecessors, (34), 16 states have call successors, (34) [2021-11-12 23:08:01,467 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 126 transitions. [2021-11-12 23:08:01,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-12 23:08:01,469 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:08:01,469 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:08:01,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-12 23:08:01,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-12 23:08:01,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-12 23:08:02,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:08:02,075 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:08:02,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:08:02,076 INFO L85 PathProgramCache]: Analyzing trace with hash 24387113, now seen corresponding path program 2 times [2021-11-12 23:08:02,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:08:02,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1601164768] [2021-11-12 23:08:02,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:08:02,077 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:08:02,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:08:02,077 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:08:02,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2b93d5f-45f0-4022-b933-69f376a7403a/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-12 23:08:02,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 23:08:02,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:08:02,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 68 conjunts are in the unsatisfiable core [2021-11-12 23:08:02,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:08:02,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 9 [2021-11-12 23:08:03,645 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 14 treesize of output 10 [2021-11-12 23:08:04,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:04,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 23:08:04,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:04,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:04,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:04,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 35 [2021-11-12 23:08:05,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:05,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:05,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:05,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:05,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:05,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:05,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 49 [2021-11-12 23:08:05,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:05,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:05,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:05,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:05,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:05,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:05,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:05,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:05,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:05,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:05,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 61 [2021-11-12 23:08:06,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:06,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:06,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:06,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:06,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:06,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:06,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:06,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:06,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:06,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:06,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:06,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:06,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:06,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:06,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:06,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 75 [2021-11-12 23:08:07,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:07,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:07,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:07,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:07,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:07,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:07,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:07,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:07,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:07,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:07,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:07,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:07,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:07,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:07,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:07,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:07,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:07,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:07,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:07,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:07,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:07,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 89 [2021-11-12 23:08:08,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:08,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:08,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:08,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:08,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:08,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:08,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:08,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:08,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:08,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:08,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:08,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:08,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:08,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:08,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:08,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:08,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:08,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:08,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:08,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:08,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:08,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:08,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:08,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:08,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:08,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:08,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:08,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:08,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 29 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 95 [2021-11-12 23:08:12,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:12,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:12,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:12,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:12,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:12,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:12,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:12,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:12,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:12,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:12,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:12,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:12,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:12,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:12,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:12,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:12,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:12,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:12,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:12,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:12,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:12,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:12,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:12,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:13,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:13,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:13,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:13,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:13,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:13,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:13,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:13,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:13,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:13,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:13,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:13,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:13,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:13,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:13,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:13,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:13,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:13,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:13,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:13,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:13,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:13,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:13,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:13,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:13,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:13,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:13,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:13,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:13,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:13,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:13,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:13,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:08:13,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:08:13,048 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:08:13,049 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:08:13,049 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:08:13,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:08:13,051 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:08:13,051 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:08:13,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 57 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 173 [2021-11-12 23:08:21,767 INFO L354 Elim1Store]: treesize reduction 386, result has 1.8 percent of original size [2021-11-12 23:08:21,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 18 select indices, 18 select index equivalence classes, 28 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 153 case distinctions, treesize of input 145 treesize of output 79 [2021-11-12 23:08:22,049 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 35 proven. 89 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-12 23:08:22,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:18:03,226 WARN L227 SmtUtils]: Spent 1.55m on a formula simplification. DAG size of input: 184 DAG size of output: 90 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-12 23:18:03,227 INFO L354 Elim1Store]: treesize reduction 1881, result has 15.0 percent of original size [2021-11-12 23:18:03,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 9 case distinctions, treesize of input 4947303203755 treesize of output 2885715756279