./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_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_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/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_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/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_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/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 99ee682e10e695b9eb1615836043680c46e24c4df6227faaade6163d2feea99e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:27:29,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:27:29,131 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:27:29,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:27:29,184 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:27:29,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:27:29,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:27:29,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:27:29,202 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:27:29,203 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:27:29,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:27:29,205 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:27:29,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:27:29,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:27:29,209 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:27:29,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:27:29,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:27:29,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:27:29,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:27:29,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:27:29,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:27:29,242 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:27:29,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:27:29,246 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:27:29,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:27:29,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:27:29,256 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:27:29,261 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:27:29,262 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:27:29,263 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:27:29,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:27:29,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:27:29,266 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:27:29,266 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:27:29,268 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:27:29,268 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:27:29,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:27:29,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:27:29,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:27:29,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:27:29,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:27:29,273 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-13 01:27:29,299 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:27:29,299 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:27:29,302 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:27:29,302 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:27:29,302 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:27:29,303 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:27:29,303 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:27:29,303 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 01:27:29,304 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:27:29,304 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:27:29,304 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 01:27:29,304 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 01:27:29,305 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:27:29,305 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 01:27:29,305 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 01:27:29,305 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 01:27:29,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:27:29,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 01:27:29,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:27:29,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:27:29,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:27:29,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:27:29,308 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:27:29,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:27:29,308 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:27:29,308 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:27:29,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:27:29,309 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:27:29,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:27:29,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:27:29,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:27:29,310 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:27:29,310 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 01:27:29,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 01:27:29,310 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:27:29,311 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:27:29,311 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:27:29,311 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_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99ee682e10e695b9eb1615836043680c46e24c4df6227faaade6163d2feea99e [2021-11-13 01:27:29,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:27:29,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:27:29,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:27:29,618 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:27:29,619 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:27:29,620 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i [2021-11-13 01:27:29,687 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/data/a034e96bd/5d7534fb391d4a51bbffe19929665444/FLAG5953474f1 [2021-11-13 01:27:30,520 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:27:30,521 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i [2021-11-13 01:27:30,560 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/data/a034e96bd/5d7534fb391d4a51bbffe19929665444/FLAG5953474f1 [2021-11-13 01:27:30,986 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/data/a034e96bd/5d7534fb391d4a51bbffe19929665444 [2021-11-13 01:27:30,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:27:30,990 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:27:30,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:27:30,991 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:27:30,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:27:30,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:27:30" (1/1) ... [2021-11-13 01:27:30,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1986fcc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:30, skipping insertion in model container [2021-11-13 01:27:30,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:27:30" (1/1) ... [2021-11-13 01:27:31,003 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:27:31,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:27:31,370 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_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i[4492,4505] [2021-11-13 01:27:31,377 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i[4552,4565] [2021-11-13 01:27:31,400 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:27:31,406 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:27:32,368 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:32,369 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:32,370 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:32,370 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:32,371 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:32,383 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:32,384 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:32,386 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:32,386 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:32,767 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:27:32,768 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:27:32,769 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:27:32,770 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:27:32,771 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:27:32,772 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:27:32,773 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:27:32,774 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:27:32,774 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:27:32,775 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:27:32,921 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:27:33,017 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:33,018 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:33,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:27:33,194 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 01:27:33,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@ed7fd9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:33, skipping insertion in model container [2021-11-13 01:27:33,203 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:27:33,204 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 01:27:33,206 INFO L158 Benchmark]: Toolchain (without parser) took 2215.17ms. Allocated memory was 130.0MB in the beginning and 161.5MB in the end (delta: 31.5MB). Free memory was 102.5MB in the beginning and 122.8MB in the end (delta: -20.2MB). Peak memory consumption was 57.1MB. Max. memory is 16.1GB. [2021-11-13 01:27:33,207 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 130.0MB. Free memory was 87.6MB in the beginning and 87.6MB in the end (delta: 75.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:27:33,208 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2212.67ms. Allocated memory was 130.0MB in the beginning and 161.5MB in the end (delta: 31.5MB). Free memory was 102.2MB in the beginning and 122.8MB in the end (delta: -20.5MB). Peak memory consumption was 57.1MB. Max. memory is 16.1GB. [2021-11-13 01:27:33,209 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 130.0MB. Free memory was 87.6MB in the beginning and 87.6MB in the end (delta: 75.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2212.67ms. Allocated memory was 130.0MB in the beginning and 161.5MB in the end (delta: 31.5MB). Free memory was 102.2MB in the beginning and 122.8MB in the end (delta: -20.5MB). Peak memory consumption was 57.1MB. 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_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/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_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/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_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/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 99ee682e10e695b9eb1615836043680c46e24c4df6227faaade6163d2feea99e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:27:35,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:27:35,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:27:35,467 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:27:35,468 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:27:35,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:27:35,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:27:35,477 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:27:35,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:27:35,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:27:35,497 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:27:35,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:27:35,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:27:35,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:27:35,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:27:35,506 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:27:35,508 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:27:35,509 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:27:35,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:27:35,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:27:35,523 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:27:35,525 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:27:35,527 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:27:35,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:27:35,535 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:27:35,536 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:27:35,536 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:27:35,538 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:27:35,538 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:27:35,540 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:27:35,540 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:27:35,541 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:27:35,543 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:27:35,544 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:27:35,545 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:27:35,545 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:27:35,545 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:27:35,546 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:27:35,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:27:35,547 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:27:35,547 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:27:35,548 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-13 01:27:35,589 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:27:35,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:27:35,591 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:27:35,591 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:27:35,591 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:27:35,591 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:27:35,592 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:27:35,592 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:27:35,592 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:27:35,592 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:27:35,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:27:35,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:27:35,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:27:35,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:27:35,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:27:35,595 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:27:35,595 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 01:27:35,596 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 01:27:35,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:27:35,596 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:27:35,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:27:35,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:27:35,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 01:27:35,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:27:35,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:27:35,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:27:35,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:27:35,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:27:35,598 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 01:27:35,598 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 01:27:35,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:27:35,599 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:27:35,599 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:27:35,599 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_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99ee682e10e695b9eb1615836043680c46e24c4df6227faaade6163d2feea99e [2021-11-13 01:27:35,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:27:35,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:27:35,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:27:35,984 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:27:35,984 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:27:35,986 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i [2021-11-13 01:27:36,055 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/data/5f6da109d/2144bb796f7c4d368f378710dd859294/FLAG997ca9a4b [2021-11-13 01:27:36,950 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:27:36,958 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i [2021-11-13 01:27:36,996 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/data/5f6da109d/2144bb796f7c4d368f378710dd859294/FLAG997ca9a4b [2021-11-13 01:27:37,433 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/data/5f6da109d/2144bb796f7c4d368f378710dd859294 [2021-11-13 01:27:37,436 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:27:37,439 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:27:37,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:27:37,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:27:37,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:27:37,446 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:27:37" (1/1) ... [2021-11-13 01:27:37,447 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79dccc96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:37, skipping insertion in model container [2021-11-13 01:27:37,447 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:27:37" (1/1) ... [2021-11-13 01:27:37,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:27:37,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:27:37,919 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_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i[4492,4505] [2021-11-13 01:27:37,927 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_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i[4552,4565] [2021-11-13 01:27:37,956 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:27:37,964 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:27:38,829 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:38,830 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:38,830 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:38,831 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:38,832 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:38,849 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:38,850 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:38,851 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:38,852 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:39,302 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:27:39,303 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:27:39,304 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:27:39,305 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:27:39,307 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:27:39,307 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:27:39,308 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:27:39,309 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:27:39,309 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:27:39,310 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:27:39,492 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:27:39,599 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:39,605 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:39,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:27:39,765 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 01:27:39,838 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:27:39,845 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_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i[4492,4505] [2021-11-13 01:27:39,845 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_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i[4552,4565] [2021-11-13 01:27:39,847 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:27:39,849 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:27:39,900 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:39,900 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:39,901 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:39,901 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:39,902 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:39,919 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:39,919 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:39,920 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:39,921 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:39,980 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:27:39,980 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:27:39,981 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:27:39,982 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:27:39,985 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:27:39,986 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:27:39,986 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:27:39,987 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:27:39,987 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:27:39,988 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:27:40,022 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:27:40,122 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:40,123 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:40,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:27:40,218 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 01:27:40,243 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_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i[4492,4505] [2021-11-13 01:27:40,244 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_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/sv-benchmarks/c/aws-c-common/aws_array_eq_c_str_harness.i[4552,4565] [2021-11-13 01:27:40,245 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:27:40,246 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:27:40,271 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:40,272 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:40,272 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:40,272 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:40,273 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:40,277 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:40,278 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:40,309 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:40,310 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:40,338 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:27:40,339 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:27:40,339 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:27:40,340 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:27:40,340 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:27:40,341 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:27:40,341 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:27:40,342 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:27:40,342 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:27:40,342 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:27:40,359 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:27:40,406 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:40,407 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:27:40,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:27:40,781 INFO L208 MainTranslator]: Completed translation [2021-11-13 01:27:40,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:40 WrapperNode [2021-11-13 01:27:40,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:27:40,783 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 01:27:40,783 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 01:27:40,783 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 01:27:40,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:40" (1/1) ... [2021-11-13 01:27:40,890 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:40" (1/1) ... [2021-11-13 01:27:40,961 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 01:27:40,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 01:27:40,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 01:27:40,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 01:27:40,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:40" (1/1) ... [2021-11-13 01:27:40,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:40" (1/1) ... [2021-11-13 01:27:40,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:40" (1/1) ... [2021-11-13 01:27:40,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:40" (1/1) ... [2021-11-13 01:27:41,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:40" (1/1) ... [2021-11-13 01:27:41,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:40" (1/1) ... [2021-11-13 01:27:41,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:40" (1/1) ... [2021-11-13 01:27:41,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 01:27:41,098 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 01:27:41,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 01:27:41,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 01:27:41,099 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:40" (1/1) ... [2021-11-13 01:27:41,106 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:27:41,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:27:41,143 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 01:27:41,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 01:27:41,211 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_c_str [2021-11-13 01:27:41,211 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_c_str [2021-11-13 01:27:41,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 01:27:41,212 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-13 01:27:41,212 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-13 01:27:41,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 01:27:41,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-13 01:27:41,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 01:27:41,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 01:27:41,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 01:27:41,214 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-11-13 01:27:41,214 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-11-13 01:27:41,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 01:27:41,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 01:27:41,215 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-13 01:27:41,215 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-13 01:27:41,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 01:27:41,215 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-13 01:27:41,215 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-13 01:27:41,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-13 01:27:41,216 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-13 01:27:41,216 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-13 01:27:41,216 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 01:27:41,217 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 01:27:41,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 01:27:41,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-13 01:27:41,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 01:27:41,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 01:27:41,217 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-13 01:27:41,217 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-13 01:27:53,627 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 01:27:53,628 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 01:27:53,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:27:53 BoogieIcfgContainer [2021-11-13 01:27:53,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 01:27:53,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 01:27:53,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 01:27:53,635 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 01:27:53,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:27:37" (1/3) ... [2021-11-13 01:27:53,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b9c6b81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:27:53, skipping insertion in model container [2021-11-13 01:27:53,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:27:40" (2/3) ... [2021-11-13 01:27:53,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b9c6b81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:27:53, skipping insertion in model container [2021-11-13 01:27:53,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:27:53" (3/3) ... [2021-11-13 01:27:53,638 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_eq_c_str_harness.i [2021-11-13 01:27:53,644 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 01:27:53,644 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 01:27:53,695 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 01:27:53,702 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 01:27:53,702 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 01:27:53,720 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 60 states have (on average 1.2833333333333334) internal successors, (77), 63 states have internal predecessors, (77), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-13 01:27:53,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-13 01:27:53,729 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:27:53,730 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-11-13 01:27:53,731 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:27:53,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:27:53,737 INFO L85 PathProgramCache]: Analyzing trace with hash -725279613, now seen corresponding path program 1 times [2021-11-13 01:27:53,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:27:53,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1072454088] [2021-11-13 01:27:53,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:27:53,758 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:27:53,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:27:53,762 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:27:53,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 01:27:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:27:57,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 1799 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 01:27:57,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:27:58,186 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-13 01:27:58,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:27:58,393 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-13 01:27:58,394 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:27:58,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1072454088] [2021-11-13 01:27:58,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1072454088] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:27:58,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:27:58,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-13 01:27:58,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693765187] [2021-11-13 01:27:58,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:27:58,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 01:27:58,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:27:58,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 01:27:58,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 01:27:58,432 INFO L87 Difference]: Start difference. First operand has 97 states, 60 states have (on average 1.2833333333333334) internal successors, (77), 63 states have internal predecessors, (77), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-13 01:27:58,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:27:58,467 INFO L93 Difference]: Finished difference Result 191 states and 276 transitions. [2021-11-13 01:27:58,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 01:27:58,470 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 68 [2021-11-13 01:27:58,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:27:58,479 INFO L225 Difference]: With dead ends: 191 [2021-11-13 01:27:58,479 INFO L226 Difference]: Without dead ends: 92 [2021-11-13 01:27:58,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 134 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 01:27:58,487 INFO L933 BasicCegarLoop]: 126 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, 126 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.84ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 01:27:58,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 1.84ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 01:27:58,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-11-13 01:27:58,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-11-13 01:27:58,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 56 states have (on average 1.2321428571428572) internal successors, (69), 58 states have internal predecessors, (69), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-13 01:27:58,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 120 transitions. [2021-11-13 01:27:58,537 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 120 transitions. Word has length 68 [2021-11-13 01:27:58,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:27:58,537 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 120 transitions. [2021-11-13 01:27:58,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-13 01:27:58,538 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 120 transitions. [2021-11-13 01:27:58,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-13 01:27:58,542 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:27:58,542 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-11-13 01:27:58,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 01:27:58,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:27:58,758 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:27:58,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:27:58,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1097524929, now seen corresponding path program 1 times [2021-11-13 01:27:58,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:27:58,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816227353] [2021-11-13 01:27:58,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:27:58,767 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:27:58,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:27:58,768 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:27:58,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 01:28:02,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:02,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 1799 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:28:02,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:28:03,118 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 01:28:03,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:28:03,355 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-13 01:28:03,355 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:28:03,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816227353] [2021-11-13 01:28:03,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816227353] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:03,356 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:28:03,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 01:28:03,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157373196] [2021-11-13 01:28:03,357 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:03,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:28:03,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:28:03,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:28:03,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:28:03,360 INFO L87 Difference]: Start difference. First operand 92 states and 120 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-13 01:28:03,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:03,437 INFO L93 Difference]: Finished difference Result 174 states and 235 transitions. [2021-11-13 01:28:03,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:28:03,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 68 [2021-11-13 01:28:03,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:03,441 INFO L225 Difference]: With dead ends: 174 [2021-11-13 01:28:03,441 INFO L226 Difference]: Without dead ends: 116 [2021-11-13 01:28:03,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:28:03,443 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 15 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.01ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.24ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:03,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 368 Invalid, 13 Unknown, 0 Unchecked, 5.01ms Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 49.24ms Time] [2021-11-13 01:28:03,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-11-13 01:28:03,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 95. [2021-11-13 01:28:03,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 60 states have internal predecessors, (71), 27 states have call successors, (27), 9 states have call predecessors, (27), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-13 01:28:03,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 124 transitions. [2021-11-13 01:28:03,465 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 124 transitions. Word has length 68 [2021-11-13 01:28:03,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:03,466 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 124 transitions. [2021-11-13 01:28:03,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-13 01:28:03,466 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 124 transitions. [2021-11-13 01:28:03,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-13 01:28:03,478 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:03,478 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-11-13 01:28:03,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 01:28:03,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:28:03,694 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:28:03,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:03,695 INFO L85 PathProgramCache]: Analyzing trace with hash -747842237, now seen corresponding path program 1 times [2021-11-13 01:28:03,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:28:03,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [214434030] [2021-11-13 01:28:03,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:03,702 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:28:03,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:28:03,703 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:28:03,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 01:28:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:07,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 1800 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 01:28:07,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:28:08,061 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-13 01:28:08,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:28:08,496 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-13 01:28:08,497 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:28:08,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [214434030] [2021-11-13 01:28:08,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [214434030] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:28:08,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:28:08,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-13 01:28:08,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972184706] [2021-11-13 01:28:08,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:08,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:28:08,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:28:08,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:28:08,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-13 01:28:08,500 INFO L87 Difference]: Start difference. First operand 95 states and 124 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-13 01:28:08,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:08,798 INFO L93 Difference]: Finished difference Result 146 states and 191 transitions. [2021-11-13 01:28:08,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:28:08,799 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 68 [2021-11-13 01:28:08,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:08,801 INFO L225 Difference]: With dead ends: 146 [2021-11-13 01:28:08,801 INFO L226 Difference]: Without dead ends: 92 [2021-11-13 01:28:08,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-13 01:28:08,803 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 2 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 221.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.20ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 249.38ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:08,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 513 Invalid, 93 Unknown, 0 Unchecked, 5.20ms Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 249.38ms Time] [2021-11-13 01:28:08,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-11-13 01:28:08,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-11-13 01:28:08,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 56 states have (on average 1.1964285714285714) internal successors, (67), 58 states have internal predecessors, (67), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-13 01:28:08,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 118 transitions. [2021-11-13 01:28:08,815 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 118 transitions. Word has length 68 [2021-11-13 01:28:08,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:08,815 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 118 transitions. [2021-11-13 01:28:08,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-13 01:28:08,816 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 118 transitions. [2021-11-13 01:28:08,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-13 01:28:08,817 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:08,817 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 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 01:28:08,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 01:28:09,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:28:09,041 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:28:09,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:09,042 INFO L85 PathProgramCache]: Analyzing trace with hash -364789251, now seen corresponding path program 1 times [2021-11-13 01:28:09,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:28:09,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1481513883] [2021-11-13 01:28:09,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:09,046 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:28:09,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:28:09,046 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:28:09,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 01:28:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:12,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 1851 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-13 01:28:12,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:28:13,750 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 9 proven. 27 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-11-13 01:28:13,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:28:14,881 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-13 01:28:14,882 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:28:14,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1481513883] [2021-11-13 01:28:14,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1481513883] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:28:14,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [105200520] [2021-11-13 01:28:14,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:14,882 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:28:14,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:28:14,884 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:28:14,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-13 01:28:16,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:16,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 1851 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 01:28:16,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:28:16,577 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-11-13 01:28:16,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:28:16,788 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-11-13 01:28:16,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [105200520] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:16,788 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:28:16,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [12, 11] total 18 [2021-11-13 01:28:16,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925824297] [2021-11-13 01:28:16,789 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:16,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:28:16,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:28:16,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:28:16,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-11-13 01:28:16,791 INFO L87 Difference]: Start difference. First operand 92 states and 118 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2021-11-13 01:28:16,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:16,817 INFO L93 Difference]: Finished difference Result 129 states and 163 transitions. [2021-11-13 01:28:16,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:28:16,818 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 96 [2021-11-13 01:28:16,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:16,820 INFO L225 Difference]: With dead ends: 129 [2021-11-13 01:28:16,821 INFO L226 Difference]: Without dead ends: 95 [2021-11-13 01:28:16,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-11-13 01:28:16,822 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 0 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.96ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.28ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:16,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 346 Invalid, 7 Unknown, 0 Unchecked, 1.96ms Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 18.28ms Time] [2021-11-13 01:28:16,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-13 01:28:16,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-11-13 01:28:16,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 58 states have (on average 1.1896551724137931) internal successors, (69), 60 states have internal predecessors, (69), 26 states have call successors, (26), 9 states have call predecessors, (26), 10 states have return successors, (26), 26 states have call predecessors, (26), 25 states have call successors, (26) [2021-11-13 01:28:16,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 121 transitions. [2021-11-13 01:28:16,834 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 121 transitions. Word has length 96 [2021-11-13 01:28:16,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:16,835 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 121 transitions. [2021-11-13 01:28:16,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2021-11-13 01:28:16,835 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 121 transitions. [2021-11-13 01:28:16,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-13 01:28:16,836 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:16,837 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 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 01:28:16,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 01:28:17,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2021-11-13 01:28:17,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:28:17,242 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:28:17,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:17,242 INFO L85 PathProgramCache]: Analyzing trace with hash 946196880, now seen corresponding path program 1 times [2021-11-13 01:28:17,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:28:17,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1803868186] [2021-11-13 01:28:17,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:17,245 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:28:17,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:28:17,246 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:28:17,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 01:28:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:20,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 1849 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-13 01:28:20,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:28:22,478 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 12 proven. 27 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-13 01:28:22,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:28:25,358 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-13 01:28:25,358 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:28:25,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1803868186] [2021-11-13 01:28:25,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1803868186] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:28:25,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1822568062] [2021-11-13 01:28:25,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:25,359 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:28:25,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:28:25,366 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:28:25,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-13 01:28:31,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:28:32,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 1849 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-13 01:28:32,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:28:33,710 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-11-13 01:28:33,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:28:35,342 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-11-13 01:28:35,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1822568062] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:28:35,343 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:28:35,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18, 18] imperfect sequences [22, 21] total 49 [2021-11-13 01:28:35,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232118957] [2021-11-13 01:28:35,343 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:28:35,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-13 01:28:35,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:28:35,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-13 01:28:35,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=2183, Unknown=0, NotChecked=0, Total=2352 [2021-11-13 01:28:35,348 INFO L87 Difference]: Start difference. First operand 95 states and 121 transitions. Second operand has 25 states, 22 states have (on average 2.227272727272727) internal successors, (49), 21 states have internal predecessors, (49), 10 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (20), 9 states have call predecessors, (20), 8 states have call successors, (20) [2021-11-13 01:28:37,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:28:37,698 INFO L93 Difference]: Finished difference Result 166 states and 221 transitions. [2021-11-13 01:28:37,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-13 01:28:37,698 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 2.227272727272727) internal successors, (49), 21 states have internal predecessors, (49), 10 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (20), 9 states have call predecessors, (20), 8 states have call successors, (20) Word has length 96 [2021-11-13 01:28:37,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:28:37,702 INFO L225 Difference]: With dead ends: 166 [2021-11-13 01:28:37,702 INFO L226 Difference]: Without dead ends: 124 [2021-11-13 01:28:37,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 329 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 868 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=219, Invalid=2973, Unknown=0, NotChecked=0, Total=3192 [2021-11-13 01:28:37,705 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 76 mSDsluCounter, 2068 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1384.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 2190 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.84ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 1536.28ms IncrementalHoareTripleChecker+Time [2021-11-13 01:28:37,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 2190 Invalid, 512 Unknown, 0 Unchecked, 14.84ms Time], IncrementalHoareTripleChecker [25 Valid, 448 Invalid, 0 Unknown, 39 Unchecked, 1536.28ms Time] [2021-11-13 01:28:37,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-13 01:28:37,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 119. [2021-11-13 01:28:37,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 71 states have (on average 1.1971830985915493) internal successors, (85), 74 states have internal predecessors, (85), 35 states have call successors, (35), 9 states have call predecessors, (35), 12 states have return successors, (38), 36 states have call predecessors, (38), 33 states have call successors, (38) [2021-11-13 01:28:37,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 158 transitions. [2021-11-13 01:28:37,721 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 158 transitions. Word has length 96 [2021-11-13 01:28:37,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:28:37,722 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 158 transitions. [2021-11-13 01:28:37,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 2.227272727272727) internal successors, (49), 21 states have internal predecessors, (49), 10 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (20), 9 states have call predecessors, (20), 8 states have call successors, (20) [2021-11-13 01:28:37,722 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 158 transitions. [2021-11-13 01:28:37,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-13 01:28:37,724 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:28:37,724 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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 01:28:37,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-13 01:28:37,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 01:28:38,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:28:38,137 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:28:38,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:28:38,138 INFO L85 PathProgramCache]: Analyzing trace with hash 407446775, now seen corresponding path program 1 times [2021-11-13 01:28:38,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:28:38,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [808113404] [2021-11-13 01:28:38,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:28:38,141 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:28:38,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:28:38,142 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:28:38,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf43958a-c106-4fa5-a3eb-9214d6fd6fd9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process