./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_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_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/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_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/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_fe690e27-9210-4ceb-a1f0-2ae4e7272607/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 b1e17fda858e874821809b4efef78fd91cf6fdf1723d3ff0faf91ee901e13b86 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:32:38,957 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:32:38,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:32:39,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:32:39,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:32:39,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:32:39,039 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:32:39,044 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:32:39,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:32:39,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:32:39,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:32:39,059 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:32:39,060 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:32:39,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:32:39,066 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:32:39,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:32:39,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:32:39,080 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:32:39,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:32:39,094 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:32:39,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:32:39,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:32:39,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:32:39,104 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:32:39,116 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:32:39,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:32:39,117 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:32:39,119 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:32:39,120 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:32:39,122 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:32:39,123 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:32:39,124 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:32:39,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:32:39,128 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:32:39,130 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:32:39,131 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:32:39,132 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:32:39,132 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:32:39,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:32:39,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:32:39,135 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:32:39,136 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-13 01:32:39,194 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:32:39,194 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:32:39,196 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:32:39,196 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:32:39,197 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:32:39,197 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:32:39,197 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:32:39,198 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 01:32:39,198 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:32:39,198 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:32:39,199 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 01:32:39,200 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 01:32:39,200 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:32:39,200 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 01:32:39,201 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 01:32:39,201 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 01:32:39,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:32:39,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 01:32:39,203 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:32:39,203 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:32:39,203 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:32:39,203 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:32:39,204 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:32:39,204 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:32:39,204 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:32:39,205 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:32:39,205 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:32:39,205 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:32:39,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:32:39,208 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:32:39,208 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:32:39,208 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:32:39,209 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 01:32:39,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 01:32:39,209 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:32:39,210 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:32:39,210 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:32:39,210 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_fe690e27-9210-4ceb-a1f0-2ae4e7272607/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1e17fda858e874821809b4efef78fd91cf6fdf1723d3ff0faf91ee901e13b86 [2021-11-13 01:32:39,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:32:39,594 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:32:39,597 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:32:39,599 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:32:39,600 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:32:39,602 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i [2021-11-13 01:32:39,695 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/data/08fd330e4/30f69ecc33b646d6a5ae94e186233b19/FLAG1f48c6457 [2021-11-13 01:32:40,928 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:32:40,929 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i [2021-11-13 01:32:41,001 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/data/08fd330e4/30f69ecc33b646d6a5ae94e186233b19/FLAG1f48c6457 [2021-11-13 01:32:41,019 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/data/08fd330e4/30f69ecc33b646d6a5ae94e186233b19 [2021-11-13 01:32:41,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:32:41,025 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:32:41,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:32:41,030 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:32:41,033 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:32:41,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:32:41" (1/1) ... [2021-11-13 01:32:41,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45478ce5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:41, skipping insertion in model container [2021-11-13 01:32:41,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:32:41" (1/1) ... [2021-11-13 01:32:41,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:32:41,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:32:41,638 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_fe690e27-9210-4ceb-a1f0-2ae4e7272607/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4501,4514] [2021-11-13 01:32:41,648 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_fe690e27-9210-4ceb-a1f0-2ae4e7272607/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4561,4574] [2021-11-13 01:32:41,677 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:32:41,683 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:32:43,029 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:43,038 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:43,039 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:43,041 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:43,045 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:43,079 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:43,081 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:43,086 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:43,087 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:43,600 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:32:43,602 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:32:43,604 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:32:43,605 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:32:43,608 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:32:43,609 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:32:43,610 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:32:43,611 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:32:43,612 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:32:43,613 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:32:43,836 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:32:43,867 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:43,867 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:44,008 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:44,009 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:44,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:32:44,198 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-13 01:32:44,199 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6b85b4ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:44, skipping insertion in model container [2021-11-13 01:32:44,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:32:44,199 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 01:32:44,202 INFO L158 Benchmark]: Toolchain (without parser) took 3175.67ms. Allocated memory was 104.9MB in the beginning and 144.7MB in the end (delta: 39.8MB). Free memory was 63.2MB in the beginning and 64.2MB in the end (delta: -1.0MB). Peak memory consumption was 38.1MB. Max. memory is 16.1GB. [2021-11-13 01:32:44,203 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 104.9MB. Free memory was 57.5MB in the beginning and 57.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:32:44,205 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3169.89ms. Allocated memory was 104.9MB in the beginning and 144.7MB in the end (delta: 39.8MB). Free memory was 62.9MB in the beginning and 65.0MB in the end (delta: -2.1MB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. [2021-11-13 01:32:44,208 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 104.9MB. Free memory was 57.5MB in the beginning and 57.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3169.89ms. Allocated memory was 104.9MB in the beginning and 144.7MB in the end (delta: 39.8MB). Free memory was 62.9MB in the beginning and 65.0MB in the end (delta: -2.1MB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6990]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/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_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/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_fe690e27-9210-4ceb-a1f0-2ae4e7272607/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 b1e17fda858e874821809b4efef78fd91cf6fdf1723d3ff0faf91ee901e13b86 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:32:47,116 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:32:47,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:32:47,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:32:47,184 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:32:47,189 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:32:47,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:32:47,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:32:47,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:32:47,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:32:47,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:32:47,215 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:32:47,216 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:32:47,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:32:47,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:32:47,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:32:47,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:32:47,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:32:47,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:32:47,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:32:47,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:32:47,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:32:47,252 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:32:47,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:32:47,266 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:32:47,267 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:32:47,267 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:32:47,270 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:32:47,271 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:32:47,272 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:32:47,273 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:32:47,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:32:47,276 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:32:47,278 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:32:47,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:32:47,280 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:32:47,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:32:47,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:32:47,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:32:47,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:32:47,285 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:32:47,292 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-13 01:32:47,341 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:32:47,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:32:47,343 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:32:47,343 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:32:47,343 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:32:47,344 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:32:47,344 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:32:47,344 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:32:47,344 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:32:47,345 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:32:47,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:32:47,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:32:47,346 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:32:47,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:32:47,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:32:47,347 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:32:47,348 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 01:32:47,348 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 01:32:47,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:32:47,349 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:32:47,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:32:47,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:32:47,350 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 01:32:47,350 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:32:47,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:32:47,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:32:47,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:32:47,351 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:32:47,351 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 01:32:47,352 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 01:32:47,352 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:32:47,352 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:32:47,353 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:32:47,353 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_fe690e27-9210-4ceb-a1f0-2ae4e7272607/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1e17fda858e874821809b4efef78fd91cf6fdf1723d3ff0faf91ee901e13b86 [2021-11-13 01:32:47,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:32:47,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:32:47,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:32:47,837 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:32:47,838 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:32:47,840 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i [2021-11-13 01:32:47,925 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/data/cf65dcf42/d0735e9508a34d2290146278b6bb9c5b/FLAG366ce44e2 [2021-11-13 01:32:49,079 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:32:49,080 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i [2021-11-13 01:32:49,164 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/data/cf65dcf42/d0735e9508a34d2290146278b6bb9c5b/FLAG366ce44e2 [2021-11-13 01:32:49,453 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/data/cf65dcf42/d0735e9508a34d2290146278b6bb9c5b [2021-11-13 01:32:49,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:32:49,457 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:32:49,459 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:32:49,459 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:32:49,464 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:32:49,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:32:49" (1/1) ... [2021-11-13 01:32:49,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49a8d850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:49, skipping insertion in model container [2021-11-13 01:32:49,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:32:49" (1/1) ... [2021-11-13 01:32:49,477 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:32:49,654 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:32:50,118 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_fe690e27-9210-4ceb-a1f0-2ae4e7272607/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4501,4514] [2021-11-13 01:32:50,127 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_fe690e27-9210-4ceb-a1f0-2ae4e7272607/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4561,4574] [2021-11-13 01:32:50,160 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:32:50,169 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:32:51,583 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:51,584 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:51,585 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:51,586 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:51,587 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:51,607 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:51,609 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:51,611 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:51,613 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:52,151 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:32:52,153 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:32:52,155 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:32:52,156 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:32:52,158 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:32:52,159 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:32:52,160 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:32:52,161 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:32:52,162 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:32:52,163 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:32:52,395 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:32:52,432 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:52,432 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:52,562 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:52,562 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:52,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:32:52,813 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 01:32:52,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:32:52,869 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_fe690e27-9210-4ceb-a1f0-2ae4e7272607/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4501,4514] [2021-11-13 01:32:52,872 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_fe690e27-9210-4ceb-a1f0-2ae4e7272607/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4561,4574] [2021-11-13 01:32:52,874 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:32:52,877 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:32:52,963 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:52,965 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:52,966 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:52,967 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:53,000 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:53,010 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:53,011 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:53,013 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:53,014 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:53,065 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:32:53,066 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:32:53,067 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:32:53,068 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:32:53,069 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:32:53,070 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:32:53,071 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:32:53,071 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:32:53,072 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:32:53,073 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:32:53,102 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:32:53,122 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:53,122 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:53,197 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:53,197 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:53,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:32:53,322 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 01:32:53,354 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_fe690e27-9210-4ceb-a1f0-2ae4e7272607/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4501,4514] [2021-11-13 01:32:53,354 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_fe690e27-9210-4ceb-a1f0-2ae4e7272607/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4561,4574] [2021-11-13 01:32:53,356 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:32:53,358 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:32:53,415 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:53,416 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:53,417 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:53,418 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:53,419 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:53,426 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:53,427 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:53,428 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:53,428 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:53,486 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:32:53,487 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:32:53,490 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:32:53,491 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:32:53,492 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:32:53,493 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:32:53,493 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:32:53,494 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:32:53,495 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:32:53,495 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:32:53,526 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:32:53,549 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:53,549 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:53,645 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:53,646 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:32:53,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:32:54,268 INFO L208 MainTranslator]: Completed translation [2021-11-13 01:32:54,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:54 WrapperNode [2021-11-13 01:32:54,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:32:54,286 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 01:32:54,286 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 01:32:54,287 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 01:32:54,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:54" (1/1) ... [2021-11-13 01:32:54,502 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:54" (1/1) ... [2021-11-13 01:32:54,603 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 01:32:54,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 01:32:54,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 01:32:54,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 01:32:54,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:54" (1/1) ... [2021-11-13 01:32:54,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:54" (1/1) ... [2021-11-13 01:32:54,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:54" (1/1) ... [2021-11-13 01:32:54,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:54" (1/1) ... [2021-11-13 01:32:54,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:54" (1/1) ... [2021-11-13 01:32:54,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:54" (1/1) ... [2021-11-13 01:32:54,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:54" (1/1) ... [2021-11-13 01:32:54,771 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 01:32:54,772 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 01:32:54,773 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 01:32:54,773 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 01:32:54,774 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:54" (1/1) ... [2021-11-13 01:32:54,782 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:32:54,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:32:54,834 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 01:32:54,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 01:32:54,890 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-13 01:32:54,890 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-13 01:32:54,890 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-11-13 01:32:54,890 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-11-13 01:32:54,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 01:32:54,891 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-13 01:32:54,892 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-13 01:32:54,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 01:32:54,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-13 01:32:54,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-13 01:32:54,892 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-11-13 01:32:54,893 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-11-13 01:32:54,893 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-13 01:32:54,893 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-13 01:32:54,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 01:32:54,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 01:32:54,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 01:32:54,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 01:32:54,894 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-11-13 01:32:54,894 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-11-13 01:32:54,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 01:32:54,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 01:32:54,895 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-13 01:32:54,895 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-13 01:32:54,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 01:32:54,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-13 01:32:54,896 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-13 01:32:54,896 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-13 01:32:54,897 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-13 01:32:54,897 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2021-11-13 01:32:54,897 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2021-11-13 01:32:54,898 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 01:32:54,899 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 01:32:54,902 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-11-13 01:32:54,902 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-11-13 01:32:54,902 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2021-11-13 01:32:54,903 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2021-11-13 01:32:54,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 01:32:54,903 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-13 01:32:54,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-13 01:32:54,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 01:32:54,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-13 01:32:54,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 01:32:54,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 01:32:54,913 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-13 01:32:54,914 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-13 01:32:54,914 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-13 01:32:54,914 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-13 01:32:54,914 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2021-11-13 01:32:54,915 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2021-11-13 01:32:54,915 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-13 01:32:54,915 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-13 01:33:11,642 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 01:33:11,643 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-13 01:33:11,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:33:11 BoogieIcfgContainer [2021-11-13 01:33:11,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 01:33:11,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 01:33:11,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 01:33:11,653 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 01:33:11,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:32:49" (1/3) ... [2021-11-13 01:33:11,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c2df135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:33:11, skipping insertion in model container [2021-11-13 01:33:11,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:32:54" (2/3) ... [2021-11-13 01:33:11,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c2df135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:33:11, skipping insertion in model container [2021-11-13 01:33:11,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:33:11" (3/3) ... [2021-11-13 01:33:11,657 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_dynamic_harness.i [2021-11-13 01:33:11,664 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 01:33:11,664 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 01:33:11,731 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 01:33:11,739 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 01:33:11,739 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 01:33:11,771 INFO L276 IsEmpty]: Start isEmpty. Operand has 247 states, 155 states have (on average 1.238709677419355) internal successors, (192), 156 states have internal predecessors, (192), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2021-11-13 01:33:11,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-13 01:33:11,784 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:11,785 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:33:11,785 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:33:11,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:11,792 INFO L85 PathProgramCache]: Analyzing trace with hash 840131050, now seen corresponding path program 1 times [2021-11-13 01:33:11,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:33:11,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1918548867] [2021-11-13 01:33:11,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:11,821 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:33:11,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:33:11,826 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:33:11,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 01:33:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:17,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 1856 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 01:33:17,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:17,493 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-13 01:33:17,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:17,811 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-13 01:33:17,812 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:33:17,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1918548867] [2021-11-13 01:33:17,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1918548867] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:33:17,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:33:17,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-13 01:33:17,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554425094] [2021-11-13 01:33:17,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:17,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 01:33:17,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:33:17,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 01:33:17,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 01:33:17,874 INFO L87 Difference]: Start difference. First operand has 247 states, 155 states have (on average 1.238709677419355) internal successors, (192), 156 states have internal predecessors, (192), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 01:33:17,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:17,994 INFO L93 Difference]: Finished difference Result 486 states and 705 transitions. [2021-11-13 01:33:17,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 01:33:17,997 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 83 [2021-11-13 01:33:18,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:18,023 INFO L225 Difference]: With dead ends: 486 [2021-11-13 01:33:18,023 INFO L226 Difference]: Without dead ends: 242 [2021-11-13 01:33:18,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 01:33:18,045 INFO L933 BasicCegarLoop]: 332 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, 332 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.25ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:18,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 8.25ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 01:33:18,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-11-13 01:33:18,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2021-11-13 01:33:18,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 151 states have (on average 1.218543046357616) internal successors, (184), 152 states have internal predecessors, (184), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2021-11-13 01:33:18,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 327 transitions. [2021-11-13 01:33:18,166 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 327 transitions. Word has length 83 [2021-11-13 01:33:18,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:18,168 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 327 transitions. [2021-11-13 01:33:18,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 01:33:18,169 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 327 transitions. [2021-11-13 01:33:18,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-13 01:33:18,187 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:18,188 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:33:18,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:18,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:33:18,390 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:33:18,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:18,391 INFO L85 PathProgramCache]: Analyzing trace with hash 449423122, now seen corresponding path program 1 times [2021-11-13 01:33:18,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:33:18,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [102439753] [2021-11-13 01:33:18,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:18,396 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:33:18,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:33:18,397 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:33:18,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 01:33:23,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:23,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 1859 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:33:23,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:24,237 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-13 01:33:24,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:24,879 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-13 01:33:24,879 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:33:24,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [102439753] [2021-11-13 01:33:24,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [102439753] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:33:24,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:33:24,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-13 01:33:24,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611907692] [2021-11-13 01:33:24,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:24,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:33:24,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:33:24,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:33:24,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:33:24,883 INFO L87 Difference]: Start difference. First operand 242 states and 327 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-13 01:33:25,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:25,357 INFO L93 Difference]: Finished difference Result 476 states and 647 transitions. [2021-11-13 01:33:25,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:33:25,358 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 85 [2021-11-13 01:33:25,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:25,364 INFO L225 Difference]: With dead ends: 476 [2021-11-13 01:33:25,364 INFO L226 Difference]: Without dead ends: 245 [2021-11-13 01:33:25,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:33:25,367 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 91 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 343.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 1108 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.09ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 403.36ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:25,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 1108 Invalid, 56 Unknown, 0 Unchecked, 14.09ms Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 403.36ms Time] [2021-11-13 01:33:25,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-11-13 01:33:25,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2021-11-13 01:33:25,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 153 states have (on average 1.2156862745098038) internal successors, (186), 155 states have internal predecessors, (186), 72 states have call successors, (72), 18 states have call predecessors, (72), 19 states have return successors, (76), 71 states have call predecessors, (76), 71 states have call successors, (76) [2021-11-13 01:33:25,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 334 transitions. [2021-11-13 01:33:25,401 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 334 transitions. Word has length 85 [2021-11-13 01:33:25,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:25,401 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 334 transitions. [2021-11-13 01:33:25,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-13 01:33:25,402 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 334 transitions. [2021-11-13 01:33:25,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-13 01:33:25,405 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:25,405 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:33:25,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:25,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:33:25,623 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:33:25,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:25,624 INFO L85 PathProgramCache]: Analyzing trace with hash 939277799, now seen corresponding path program 1 times [2021-11-13 01:33:25,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:33:25,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1557476370] [2021-11-13 01:33:25,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:25,631 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:33:25,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:33:25,632 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:33:25,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 01:33:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:30,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 1872 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-13 01:33:30,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:31,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-13 01:33:32,587 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-13 01:33:32,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:34,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2021-11-13 01:33:34,417 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-13 01:33:34,417 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:33:34,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1557476370] [2021-11-13 01:33:34,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1557476370] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:33:34,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:33:34,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 18 [2021-11-13 01:33:34,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270565350] [2021-11-13 01:33:34,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:34,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 01:33:34,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:33:34,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 01:33:34,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-11-13 01:33:34,421 INFO L87 Difference]: Start difference. First operand 245 states and 334 transitions. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 9 states have internal predecessors, (53), 4 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-13 01:33:36,747 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:33:37,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:37,575 INFO L93 Difference]: Finished difference Result 499 states and 676 transitions. [2021-11-13 01:33:37,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 01:33:37,578 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 9 states have internal predecessors, (53), 4 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 91 [2021-11-13 01:33:37,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:37,582 INFO L225 Difference]: With dead ends: 499 [2021-11-13 01:33:37,582 INFO L226 Difference]: Without dead ends: 258 [2021-11-13 01:33:37,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2021-11-13 01:33:37,585 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 20 mSDsluCounter, 2072 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2858.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2395 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.20ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 158 IncrementalHoareTripleChecker+Unchecked, 2998.53ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:37,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 2395 Invalid, 206 Unknown, 0 Unchecked, 18.20ms Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 1 Unknown, 158 Unchecked, 2998.53ms Time] [2021-11-13 01:33:37,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-11-13 01:33:37,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2021-11-13 01:33:37,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 165 states have (on average 1.2181818181818183) internal successors, (201), 167 states have internal predecessors, (201), 72 states have call successors, (72), 19 states have call predecessors, (72), 20 states have return successors, (77), 71 states have call predecessors, (77), 71 states have call successors, (77) [2021-11-13 01:33:37,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 350 transitions. [2021-11-13 01:33:37,621 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 350 transitions. Word has length 91 [2021-11-13 01:33:37,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:37,622 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 350 transitions. [2021-11-13 01:33:37,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 9 states have internal predecessors, (53), 4 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-11-13 01:33:37,623 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 350 transitions. [2021-11-13 01:33:37,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-13 01:33:37,625 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:37,626 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:33:37,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:37,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:33:37,839 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:33:37,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:37,840 INFO L85 PathProgramCache]: Analyzing trace with hash 207310373, now seen corresponding path program 1 times [2021-11-13 01:33:37,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:33:37,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1370078893] [2021-11-13 01:33:37,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:37,845 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:33:37,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:33:37,846 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:33:37,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 01:33:42,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:42,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 1869 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:33:42,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:43,232 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-13 01:33:43,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:43,538 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-13 01:33:43,539 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:33:43,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1370078893] [2021-11-13 01:33:43,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1370078893] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:33:43,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:33:43,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-13 01:33:43,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167332988] [2021-11-13 01:33:43,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:43,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:33:43,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:33:43,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:33:43,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:33:43,541 INFO L87 Difference]: Start difference. First operand 258 states and 350 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 01:33:43,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:43,644 INFO L93 Difference]: Finished difference Result 502 states and 688 transitions. [2021-11-13 01:33:43,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:33:43,645 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 91 [2021-11-13 01:33:43,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:43,649 INFO L225 Difference]: With dead ends: 502 [2021-11-13 01:33:43,649 INFO L226 Difference]: Without dead ends: 264 [2021-11-13 01:33:43,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:33:43,652 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 20 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.46ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.14ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:43,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 973 Invalid, 16 Unknown, 0 Unchecked, 4.46ms Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 55.14ms Time] [2021-11-13 01:33:43,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-11-13 01:33:43,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 252. [2021-11-13 01:33:43,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 160 states have (on average 1.21875) internal successors, (195), 161 states have internal predecessors, (195), 72 states have call successors, (72), 19 states have call predecessors, (72), 19 states have return successors, (76), 71 states have call predecessors, (76), 71 states have call successors, (76) [2021-11-13 01:33:43,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 343 transitions. [2021-11-13 01:33:43,681 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 343 transitions. Word has length 91 [2021-11-13 01:33:43,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:43,682 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 343 transitions. [2021-11-13 01:33:43,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 01:33:43,682 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 343 transitions. [2021-11-13 01:33:43,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-13 01:33:43,684 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:43,685 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:33:43,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:43,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:33:43,907 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:33:43,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:43,907 INFO L85 PathProgramCache]: Analyzing trace with hash 707673887, now seen corresponding path program 1 times [2021-11-13 01:33:43,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:33:43,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [899689214] [2021-11-13 01:33:43,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:43,912 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:33:43,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:33:43,913 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:33:43,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 01:33:48,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:33:48,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 1881 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 01:33:48,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:33:49,813 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-13 01:33:49,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:33:50,614 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-13 01:33:50,614 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:33:50,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [899689214] [2021-11-13 01:33:50,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [899689214] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:33:50,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:33:50,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-11-13 01:33:50,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594953969] [2021-11-13 01:33:50,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:33:50,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:33:50,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:33:50,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:33:50,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:33:50,616 INFO L87 Difference]: Start difference. First operand 252 states and 343 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 01:33:52,884 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:33:54,898 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:33:57,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:33:57,395 INFO L93 Difference]: Finished difference Result 508 states and 702 transitions. [2021-11-13 01:33:57,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:33:57,399 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 95 [2021-11-13 01:33:57,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:33:57,402 INFO L225 Difference]: With dead ends: 508 [2021-11-13 01:33:57,403 INFO L226 Difference]: Without dead ends: 272 [2021-11-13 01:33:57,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:33:57,406 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 42 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6212.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.55ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 6556.36ms IncrementalHoareTripleChecker+Time [2021-11-13 01:33:57,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 1183 Invalid, 165 Unknown, 0 Unchecked, 8.55ms Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 2 Unknown, 53 Unchecked, 6556.36ms Time] [2021-11-13 01:33:57,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-11-13 01:33:57,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 261. [2021-11-13 01:33:57,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 169 states have (on average 1.2248520710059172) internal successors, (207), 170 states have internal predecessors, (207), 72 states have call successors, (72), 19 states have call predecessors, (72), 19 states have return successors, (76), 71 states have call predecessors, (76), 71 states have call successors, (76) [2021-11-13 01:33:57,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 355 transitions. [2021-11-13 01:33:57,444 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 355 transitions. Word has length 95 [2021-11-13 01:33:57,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:33:57,445 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 355 transitions. [2021-11-13 01:33:57,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 01:33:57,445 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 355 transitions. [2021-11-13 01:33:57,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-13 01:33:57,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:33:57,448 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:33:57,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 01:33:57,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:33:57,649 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:33:57,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:33:57,649 INFO L85 PathProgramCache]: Analyzing trace with hash -508479839, now seen corresponding path program 1 times [2021-11-13 01:33:57,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:33:57,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1646773371] [2021-11-13 01:33:57,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:33:57,654 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:33:57,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:33:57,655 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:33:57,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 01:34:02,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:34:02,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 1878 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-13 01:34:02,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:34:05,056 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-13 01:34:05,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:34:07,666 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-13 01:34:07,667 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:34:07,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1646773371] [2021-11-13 01:34:07,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1646773371] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:34:07,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:34:07,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 19 [2021-11-13 01:34:07,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673874988] [2021-11-13 01:34:07,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:34:07,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 01:34:07,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:34:07,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 01:34:07,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-11-13 01:34:07,669 INFO L87 Difference]: Start difference. First operand 261 states and 355 transitions. Second operand has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-13 01:34:09,944 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:34:11,957 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:34:17,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:34:17,665 INFO L93 Difference]: Finished difference Result 516 states and 716 transitions. [2021-11-13 01:34:17,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 01:34:17,669 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 95 [2021-11-13 01:34:17,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:34:17,672 INFO L225 Difference]: With dead ends: 516 [2021-11-13 01:34:17,673 INFO L226 Difference]: Without dead ends: 270 [2021-11-13 01:34:17,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2021-11-13 01:34:17,676 INFO L933 BasicCegarLoop]: 319 mSDtfsCounter, 38 mSDsluCounter, 2809 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7477.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 3128 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.92ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 398 IncrementalHoareTripleChecker+Unchecked, 7951.53ms IncrementalHoareTripleChecker+Time [2021-11-13 01:34:17,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 3128 Invalid, 694 Unknown, 0 Unchecked, 13.92ms Time], IncrementalHoareTripleChecker [2 Valid, 292 Invalid, 2 Unknown, 398 Unchecked, 7951.53ms Time] [2021-11-13 01:34:17,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-11-13 01:34:17,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 266. [2021-11-13 01:34:17,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 173 states have (on average 1.2080924855491328) internal successors, (209), 175 states have internal predecessors, (209), 72 states have call successors, (72), 19 states have call predecessors, (72), 20 states have return successors, (82), 71 states have call predecessors, (82), 71 states have call successors, (82) [2021-11-13 01:34:17,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 363 transitions. [2021-11-13 01:34:17,706 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 363 transitions. Word has length 95 [2021-11-13 01:34:17,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:34:17,707 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 363 transitions. [2021-11-13 01:34:17,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-13 01:34:17,708 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 363 transitions. [2021-11-13 01:34:17,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-13 01:34:17,710 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:34:17,710 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:34:17,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 01:34:17,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:34:17,935 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:34:17,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:34:17,935 INFO L85 PathProgramCache]: Analyzing trace with hash 784574685, now seen corresponding path program 1 times [2021-11-13 01:34:17,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:34:17,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1458969] [2021-11-13 01:34:17,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:34:17,940 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:34:17,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:34:17,941 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:34:17,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 01:34:22,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:34:22,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 1879 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:34:22,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:34:23,150 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-13 01:34:23,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:34:23,461 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-13 01:34:23,461 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:34:23,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1458969] [2021-11-13 01:34:23,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1458969] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:34:23,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:34:23,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-13 01:34:23,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908381903] [2021-11-13 01:34:23,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:34:23,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:34:23,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:34:23,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:34:23,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:34:23,464 INFO L87 Difference]: Start difference. First operand 266 states and 363 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 01:34:23,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:34:23,553 INFO L93 Difference]: Finished difference Result 520 states and 714 transitions. [2021-11-13 01:34:23,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:34:23,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 95 [2021-11-13 01:34:23,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:34:23,558 INFO L225 Difference]: With dead ends: 520 [2021-11-13 01:34:23,558 INFO L226 Difference]: Without dead ends: 270 [2021-11-13 01:34:23,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:34:23,561 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 34 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.58ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.68ms IncrementalHoareTripleChecker+Time [2021-11-13 01:34:23,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 964 Invalid, 13 Unknown, 0 Unchecked, 2.58ms Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 48.68ms Time] [2021-11-13 01:34:23,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-11-13 01:34:23,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 262. [2021-11-13 01:34:23,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 169 states have (on average 1.1952662721893492) internal successors, (202), 171 states have internal predecessors, (202), 72 states have call successors, (72), 19 states have call predecessors, (72), 20 states have return successors, (82), 71 states have call predecessors, (82), 71 states have call successors, (82) [2021-11-13 01:34:23,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 356 transitions. [2021-11-13 01:34:23,585 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 356 transitions. Word has length 95 [2021-11-13 01:34:23,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:34:23,585 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 356 transitions. [2021-11-13 01:34:23,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 01:34:23,586 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 356 transitions. [2021-11-13 01:34:23,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-13 01:34:23,588 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:34:23,589 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:34:23,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 01:34:23,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:34:23,803 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:34:23,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:34:23,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1601934821, now seen corresponding path program 1 times [2021-11-13 01:34:23,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:34:23,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [519656148] [2021-11-13 01:34:23,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:34:23,810 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:34:23,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:34:23,811 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:34:23,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 01:34:28,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:34:28,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 1876 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 01:34:28,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:34:29,148 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-13 01:34:29,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:34:29,804 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-13 01:34:29,804 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:34:29,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [519656148] [2021-11-13 01:34:29,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [519656148] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:34:29,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:34:29,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 10 [2021-11-13 01:34:29,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204506793] [2021-11-13 01:34:29,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:34:29,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 01:34:29,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:34:29,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 01:34:29,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-13 01:34:29,807 INFO L87 Difference]: Start difference. First operand 262 states and 356 transitions. Second operand has 9 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-13 01:34:30,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:34:30,579 INFO L93 Difference]: Finished difference Result 519 states and 713 transitions. [2021-11-13 01:34:30,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-13 01:34:30,580 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 95 [2021-11-13 01:34:30,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:34:30,583 INFO L225 Difference]: With dead ends: 519 [2021-11-13 01:34:30,584 INFO L226 Difference]: Without dead ends: 271 [2021-11-13 01:34:30,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-13 01:34:30,587 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 12 mSDsluCounter, 2119 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 588.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2429 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.75ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 649.61ms IncrementalHoareTripleChecker+Time [2021-11-13 01:34:30,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 2429 Invalid, 182 Unknown, 0 Unchecked, 7.75ms Time], IncrementalHoareTripleChecker [3 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 649.61ms Time] [2021-11-13 01:34:30,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-11-13 01:34:30,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 262. [2021-11-13 01:34:30,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 169 states have (on average 1.1952662721893492) internal successors, (202), 171 states have internal predecessors, (202), 72 states have call successors, (72), 19 states have call predecessors, (72), 20 states have return successors, (82), 71 states have call predecessors, (82), 71 states have call successors, (82) [2021-11-13 01:34:30,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 356 transitions. [2021-11-13 01:34:30,619 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 356 transitions. Word has length 95 [2021-11-13 01:34:30,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:34:30,620 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 356 transitions. [2021-11-13 01:34:30,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-13 01:34:30,621 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 356 transitions. [2021-11-13 01:34:30,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-13 01:34:30,622 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:34:30,623 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:34:30,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 01:34:30,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:34:30,839 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:34:30,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:34:30,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1257631092, now seen corresponding path program 1 times [2021-11-13 01:34:30,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:34:30,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [638072470] [2021-11-13 01:34:30,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:34:30,844 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:34:30,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:34:30,845 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:34:30,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 01:34:35,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:34:35,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 1883 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:34:35,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:34:36,312 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-13 01:34:36,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:34:36,784 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-13 01:34:36,784 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:34:36,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [638072470] [2021-11-13 01:34:36,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [638072470] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:34:36,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:34:36,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-13 01:34:36,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633505301] [2021-11-13 01:34:36,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:34:36,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:34:36,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:34:36,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:34:36,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:34:36,787 INFO L87 Difference]: Start difference. First operand 262 states and 356 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-13 01:34:37,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:34:37,128 INFO L93 Difference]: Finished difference Result 504 states and 688 transitions. [2021-11-13 01:34:37,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:34:37,129 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 97 [2021-11-13 01:34:37,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:34:37,133 INFO L225 Difference]: With dead ends: 504 [2021-11-13 01:34:37,133 INFO L226 Difference]: Without dead ends: 265 [2021-11-13 01:34:37,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:34:37,136 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 79 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 268.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.33ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 314.76ms IncrementalHoareTripleChecker+Time [2021-11-13 01:34:37,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 1131 Invalid, 51 Unknown, 0 Unchecked, 5.33ms Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 314.76ms Time] [2021-11-13 01:34:37,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-11-13 01:34:37,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2021-11-13 01:34:37,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 171 states have (on average 1.1929824561403508) internal successors, (204), 174 states have internal predecessors, (204), 72 states have call successors, (72), 19 states have call predecessors, (72), 21 states have return successors, (87), 71 states have call predecessors, (87), 71 states have call successors, (87) [2021-11-13 01:34:37,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 363 transitions. [2021-11-13 01:34:37,159 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 363 transitions. Word has length 97 [2021-11-13 01:34:37,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:34:37,160 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 363 transitions. [2021-11-13 01:34:37,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-13 01:34:37,160 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 363 transitions. [2021-11-13 01:34:37,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-13 01:34:37,162 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:34:37,162 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:34:37,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 01:34:37,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:34:37,379 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:34:37,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:34:37,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1437086073, now seen corresponding path program 1 times [2021-11-13 01:34:37,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:34:37,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2077409679] [2021-11-13 01:34:37,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:34:37,385 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:34:37,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:34:37,387 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:34:37,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 01:34:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:34:42,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 1887 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 01:34:42,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:34:43,140 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-13 01:34:43,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:34:43,687 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-13 01:34:43,688 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:34:43,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2077409679] [2021-11-13 01:34:43,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2077409679] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:34:43,688 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:34:43,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-13 01:34:43,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707772251] [2021-11-13 01:34:43,689 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:34:43,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:34:43,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:34:43,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:34:43,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:34:43,690 INFO L87 Difference]: Start difference. First operand 265 states and 363 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 01:34:44,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:34:44,686 INFO L93 Difference]: Finished difference Result 504 states and 686 transitions. [2021-11-13 01:34:44,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:34:44,687 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 99 [2021-11-13 01:34:44,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:34:44,690 INFO L225 Difference]: With dead ends: 504 [2021-11-13 01:34:44,691 INFO L226 Difference]: Without dead ends: 262 [2021-11-13 01:34:44,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:34:44,693 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 148 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 817.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.26ms SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 940.68ms IncrementalHoareTripleChecker+Time [2021-11-13 01:34:44,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 1309 Invalid, 169 Unknown, 0 Unchecked, 4.26ms Time], IncrementalHoareTripleChecker [84 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 940.68ms Time] [2021-11-13 01:34:44,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-11-13 01:34:44,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2021-11-13 01:34:44,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 169 states have (on average 1.1893491124260356) internal successors, (201), 171 states have internal predecessors, (201), 72 states have call successors, (72), 19 states have call predecessors, (72), 20 states have return successors, (82), 71 states have call predecessors, (82), 71 states have call successors, (82) [2021-11-13 01:34:44,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 355 transitions. [2021-11-13 01:34:44,714 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 355 transitions. Word has length 99 [2021-11-13 01:34:44,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:34:44,715 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 355 transitions. [2021-11-13 01:34:44,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-13 01:34:44,715 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 355 transitions. [2021-11-13 01:34:44,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-13 01:34:44,717 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:34:44,717 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:34:44,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 01:34:44,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:34:44,943 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:34:44,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:34:44,943 INFO L85 PathProgramCache]: Analyzing trace with hash 852094212, now seen corresponding path program 1 times [2021-11-13 01:34:44,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:34:44,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [693029933] [2021-11-13 01:34:44,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:34:44,949 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:34:44,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:34:44,951 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:34:44,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 01:34:50,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:34:50,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 1900 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 01:34:50,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:34:50,827 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-13 01:34:50,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:34:51,327 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-13 01:34:51,327 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:34:51,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [693029933] [2021-11-13 01:34:51,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [693029933] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:34:51,328 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:34:51,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-13 01:34:51,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185967956] [2021-11-13 01:34:51,328 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:34:51,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:34:51,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:34:51,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:34:51,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:34:51,330 INFO L87 Difference]: Start difference. First operand 262 states and 355 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-13 01:34:52,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:34:52,138 INFO L93 Difference]: Finished difference Result 495 states and 665 transitions. [2021-11-13 01:34:52,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:34:52,139 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 105 [2021-11-13 01:34:52,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:34:52,142 INFO L225 Difference]: With dead ends: 495 [2021-11-13 01:34:52,143 INFO L226 Difference]: Without dead ends: 259 [2021-11-13 01:34:52,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:34:52,145 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 139 mSDsluCounter, 1028 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 654.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.71ms SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 749.94ms IncrementalHoareTripleChecker+Time [2021-11-13 01:34:52,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 1340 Invalid, 143 Unknown, 0 Unchecked, 6.71ms Time], IncrementalHoareTripleChecker [82 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 749.94ms Time] [2021-11-13 01:34:52,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-11-13 01:34:52,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2021-11-13 01:34:52,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 167 states have (on average 1.18562874251497) internal successors, (198), 168 states have internal predecessors, (198), 72 states have call successors, (72), 19 states have call predecessors, (72), 19 states have return successors, (77), 71 states have call predecessors, (77), 71 states have call successors, (77) [2021-11-13 01:34:52,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 347 transitions. [2021-11-13 01:34:52,166 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 347 transitions. Word has length 105 [2021-11-13 01:34:52,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:34:52,170 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 347 transitions. [2021-11-13 01:34:52,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-13 01:34:52,171 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 347 transitions. [2021-11-13 01:34:52,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-13 01:34:52,175 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:34:52,176 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:34:52,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 01:34:52,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:34:52,391 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:34:52,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:34:52,391 INFO L85 PathProgramCache]: Analyzing trace with hash 93753673, now seen corresponding path program 1 times [2021-11-13 01:34:52,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:34:52,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [536067542] [2021-11-13 01:34:52,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:34:52,396 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:34:52,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:34:52,397 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:34:52,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe690e27-9210-4ceb-a1f0-2ae4e7272607/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 01:34:57,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:34:57,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 1904 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-13 01:34:57,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:35:00,512 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:35:00,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 99 treesize of output 35 [2021-11-13 01:35:00,733 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-13 01:35:00,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:35:02,112 INFO L354 Elim1Store]: treesize reduction 322, result has 0.3 percent of original size [2021-11-13 01:35:02,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 129 treesize of output 1 [2021-11-13 01:35:14,952 WARN L227 SmtUtils]: Spent 12.38s on a formula simplification. DAG size of input: 523 DAG size of output: 269 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-13 01:35:14,957 INFO L354 Elim1Store]: treesize reduction 837, result has 46.8 percent of original size [2021-11-13 01:35:14,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 128 treesize of output 771