./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs --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 4fce72e4c86270281dd05ead367908aebeea58cd11d1d4da51b0e6a5af67a67d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:18:35,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:18:35,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:18:35,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:18:35,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:18:35,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:18:35,788 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:18:35,790 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:18:35,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:18:35,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:18:35,795 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:18:35,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:18:35,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:18:35,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:18:35,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:18:35,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:18:35,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:18:35,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:18:35,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:18:35,810 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:18:35,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:18:35,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:18:35,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:18:35,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:18:35,821 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:18:35,830 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:18:35,831 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:18:35,832 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:18:35,832 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:18:35,834 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:18:35,834 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:18:35,835 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:18:35,836 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:18:35,840 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:18:35,841 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:18:35,842 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:18:35,844 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:18:35,845 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:18:35,845 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:18:35,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:18:35,847 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:18:35,848 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 13:18:35,894 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:18:35,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:18:35,896 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:18:35,896 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:18:35,897 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:18:35,897 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:18:35,897 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:18:35,897 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:18:35,904 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:18:35,904 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:18:35,905 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:18:35,906 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:18:35,906 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:18:35,906 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:18:35,906 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:18:35,907 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:18:35,907 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:18:35,908 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:18:35,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:18:35,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:18:35,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:18:35,909 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:18:35,909 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:18:35,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:18:35,909 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:18:35,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:18:35,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:18:35,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:18:35,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:18:35,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:18:35,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:18:35,912 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:18:35,913 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:18:35,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:18:35,913 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:18:35,913 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:18:35,914 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:18:35,914 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_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fce72e4c86270281dd05ead367908aebeea58cd11d1d4da51b0e6a5af67a67d [2021-11-19 13:18:36,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:18:36,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:18:36,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:18:36,229 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:18:36,230 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:18:36,231 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i [2021-11-19 13:18:36,303 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/data/e00fa41b5/d1e9772713cf41d4b54cc38547e36cc6/FLAGd3618d42a [2021-11-19 13:18:37,169 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:18:37,170 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i [2021-11-19 13:18:37,204 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/data/e00fa41b5/d1e9772713cf41d4b54cc38547e36cc6/FLAGd3618d42a [2021-11-19 13:18:37,642 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/data/e00fa41b5/d1e9772713cf41d4b54cc38547e36cc6 [2021-11-19 13:18:37,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:18:37,650 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:18:37,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:18:37,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:18:37,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:18:37,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:18:37" (1/1) ... [2021-11-19 13:18:37,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50b3904a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:18:37, skipping insertion in model container [2021-11-19 13:18:37,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:18:37" (1/1) ... [2021-11-19 13:18:37,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:18:37,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:18:38,080 WARN L230 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_63451664-470d-4afe-9f88-eb36ab16270f/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i[4503,4516] [2021-11-19 13:18:38,087 WARN L230 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_63451664-470d-4afe-9f88-eb36ab16270f/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i[4563,4576] [2021-11-19 13:18:38,114 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:18:38,120 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:18:39,103 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:39,104 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:39,104 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:39,105 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:39,107 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:39,123 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:39,124 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:39,127 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:39,128 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:39,591 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:18:39,593 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:18:39,594 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:18:39,596 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:18:39,598 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:18:39,599 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:18:39,600 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:18:39,601 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:18:39,602 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:18:39,603 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:18:39,798 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 13:18:39,821 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:39,822 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:40,006 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:40,007 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:40,110 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:18:40,182 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) [2021-11-19 13:18:40,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@bbd3872 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:18:40, skipping insertion in model container [2021-11-19 13:18:40,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:18:40,184 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 13:18:40,186 INFO L158 Benchmark]: Toolchain (without parser) took 2534.17ms. Allocated memory is still 109.1MB. Free memory was 84.0MB in the beginning and 62.6MB in the end (delta: 21.5MB). Peak memory consumption was 41.0MB. Max. memory is 16.1GB. [2021-11-19 13:18:40,187 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 81.8MB. Free memory was 53.8MB in the beginning and 53.8MB in the end (delta: 28.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:18:40,188 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2528.80ms. Allocated memory is still 109.1MB. Free memory was 83.6MB in the beginning and 62.6MB in the end (delta: 21.0MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. [2021-11-19 13:18:40,191 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 81.8MB. Free memory was 53.8MB in the beginning and 53.8MB in the end (delta: 28.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2528.80ms. Allocated memory is still 109.1MB. Free memory was 83.6MB in the beginning and 62.6MB in the end (delta: 21.0MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6984]: 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_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs --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 4fce72e4c86270281dd05ead367908aebeea58cd11d1d4da51b0e6a5af67a67d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:18:42,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:18:42,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:18:42,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:18:42,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:18:42,605 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:18:42,607 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:18:42,610 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:18:42,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:18:42,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:18:42,616 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:18:42,618 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:18:42,618 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:18:42,620 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:18:42,622 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:18:42,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:18:42,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:18:42,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:18:42,629 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:18:42,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:18:42,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:18:42,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:18:42,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:18:42,644 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:18:42,648 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:18:42,648 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:18:42,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:18:42,650 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:18:42,651 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:18:42,652 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:18:42,653 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:18:42,654 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:18:42,659 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:18:42,660 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:18:42,664 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:18:42,665 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:18:42,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:18:42,668 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:18:42,668 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:18:42,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:18:42,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:18:42,675 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 13:18:42,726 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:18:42,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:18:42,728 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:18:42,729 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:18:42,729 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:18:42,729 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:18:42,729 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:18:42,730 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:18:42,730 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:18:42,731 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:18:42,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:18:42,734 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:18:42,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:18:42,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:18:42,734 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:18:42,734 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:18:42,735 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 13:18:42,735 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 13:18:42,735 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:18:42,735 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:18:42,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:18:42,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:18:42,736 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 13:18:42,736 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:18:42,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:18:42,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:18:42,737 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:18:42,737 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:18:42,737 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 13:18:42,738 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 13:18:42,738 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:18:42,738 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:18:42,738 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:18:42,739 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_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fce72e4c86270281dd05ead367908aebeea58cd11d1d4da51b0e6a5af67a67d [2021-11-19 13:18:43,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:18:43,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:18:43,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:18:43,200 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:18:43,201 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:18:43,203 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i [2021-11-19 13:18:43,287 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/data/38584aa88/8179cf3101b14ecebd3617a35f91b748/FLAG72d79be45 [2021-11-19 13:18:44,274 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:18:44,275 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i [2021-11-19 13:18:44,331 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/data/38584aa88/8179cf3101b14ecebd3617a35f91b748/FLAG72d79be45 [2021-11-19 13:18:44,693 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/data/38584aa88/8179cf3101b14ecebd3617a35f91b748 [2021-11-19 13:18:44,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:18:44,699 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:18:44,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:18:44,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:18:44,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:18:44,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:18:44" (1/1) ... [2021-11-19 13:18:44,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d7ab883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:18:44, skipping insertion in model container [2021-11-19 13:18:44,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:18:44" (1/1) ... [2021-11-19 13:18:44,717 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:18:44,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:18:45,197 WARN L230 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_63451664-470d-4afe-9f88-eb36ab16270f/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i[4503,4516] [2021-11-19 13:18:45,207 WARN L230 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_63451664-470d-4afe-9f88-eb36ab16270f/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i[4563,4576] [2021-11-19 13:18:45,245 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:18:45,254 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:18:46,552 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:46,553 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:46,554 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:46,555 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:46,557 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:46,576 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:46,577 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:46,580 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:46,581 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:47,043 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:18:47,044 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:18:47,046 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:18:47,047 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:18:47,049 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:18:47,051 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:18:47,052 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:18:47,053 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:18:47,054 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:18:47,055 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:18:47,261 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 13:18:47,273 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:47,273 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:47,388 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:47,389 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:47,477 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:18:47,566 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 13:18:47,660 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:18:47,664 WARN L230 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_63451664-470d-4afe-9f88-eb36ab16270f/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i[4503,4516] [2021-11-19 13:18:47,665 WARN L230 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_63451664-470d-4afe-9f88-eb36ab16270f/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i[4563,4576] [2021-11-19 13:18:47,666 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:18:47,667 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:18:47,701 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:47,702 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:47,702 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:47,703 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:47,703 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:47,710 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:47,711 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:47,712 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:47,713 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:47,752 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:18:47,753 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:18:47,754 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:18:47,755 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:18:47,756 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:18:47,757 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:18:47,758 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:18:47,758 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:18:47,759 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:18:47,760 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:18:47,787 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 13:18:47,798 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:47,799 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:47,892 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:47,892 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:47,947 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:18:48,011 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:18:48,039 WARN L230 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_63451664-470d-4afe-9f88-eb36ab16270f/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i[4503,4516] [2021-11-19 13:18:48,040 WARN L230 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_63451664-470d-4afe-9f88-eb36ab16270f/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i[4563,4576] [2021-11-19 13:18:48,041 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:18:48,042 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:18:48,097 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:48,104 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:48,105 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:48,105 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:48,106 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:48,117 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:48,118 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:48,119 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:48,119 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:48,165 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:18:48,166 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:18:48,167 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:18:48,167 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:18:48,169 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:18:48,169 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:18:48,170 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:18:48,171 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:18:48,171 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:18:48,172 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:18:48,222 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 13:18:48,230 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:48,231 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:48,287 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:48,287 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:18:48,320 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:18:48,654 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:18:48,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:18:48 WrapperNode [2021-11-19 13:18:48,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:18:48,657 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:18:48,658 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:18:48,658 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:18:48,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:18:48" (1/1) ... [2021-11-19 13:18:48,888 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:18:48" (1/1) ... [2021-11-19 13:18:49,037 INFO L137 Inliner]: procedures = 714, calls = 2502, calls flagged for inlining = 57, calls inlined = 12, statements flattened = 989 [2021-11-19 13:18:49,038 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:18:49,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:18:49,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:18:49,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:18:49,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:18:48" (1/1) ... [2021-11-19 13:18:49,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:18:48" (1/1) ... [2021-11-19 13:18:49,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:18:48" (1/1) ... [2021-11-19 13:18:49,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:18:48" (1/1) ... [2021-11-19 13:18:49,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:18:48" (1/1) ... [2021-11-19 13:18:49,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:18:48" (1/1) ... [2021-11-19 13:18:49,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:18:48" (1/1) ... [2021-11-19 13:18:49,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:18:49,187 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:18:49,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:18:49,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:18:49,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:18:48" (1/1) ... [2021-11-19 13:18:49,197 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:18:49,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:18:49,226 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:18:49,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:18:49,298 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-11-19 13:18:49,298 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-11-19 13:18:49,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 13:18:49,299 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-19 13:18:49,299 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-19 13:18:49,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 13:18:49,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 13:18:49,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 13:18:49,299 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-19 13:18:49,300 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-19 13:18:49,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 13:18:49,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 13:18:49,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 13:18:49,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:18:49,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 13:18:49,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:18:49,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:18:49,301 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-19 13:18:49,301 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-19 13:18:49,301 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_realloc [2021-11-19 13:18:49,302 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_realloc [2021-11-19 13:18:49,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 13:18:49,302 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-19 13:18:49,302 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2021-11-19 13:18:49,303 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2021-11-19 13:18:49,303 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 13:18:49,303 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 13:18:49,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 13:18:49,304 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-19 13:18:49,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-19 13:18:49,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 13:18:49,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 13:18:49,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 13:18:49,308 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-19 13:18:49,308 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-19 13:18:49,309 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-19 13:18:49,309 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-19 13:18:49,728 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:18:49,732 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:18:53,716 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:18:53,735 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:18:53,741 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-19 13:18:53,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:18:53 BoogieIcfgContainer [2021-11-19 13:18:53,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:18:53,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:18:53,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:18:53,752 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:18:53,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:18:44" (1/3) ... [2021-11-19 13:18:53,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ebf4fcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:18:53, skipping insertion in model container [2021-11-19 13:18:53,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:18:48" (2/3) ... [2021-11-19 13:18:53,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ebf4fcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:18:53, skipping insertion in model container [2021-11-19 13:18:53,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:18:53" (3/3) ... [2021-11-19 13:18:53,758 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_reserve_relative_harness.i [2021-11-19 13:18:53,764 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:18:53,765 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 13:18:53,846 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:18:53,854 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 [2021-11-19 13:18:53,854 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 13:18:53,882 INFO L276 IsEmpty]: Start isEmpty. Operand has 159 states, 110 states have (on average 1.3181818181818181) internal successors, (145), 109 states have internal predecessors, (145), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-11-19 13:18:53,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-19 13:18:53,896 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:18:53,897 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 13:18:53,897 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:18:53,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:18:53,903 INFO L85 PathProgramCache]: Analyzing trace with hash 169873554, now seen corresponding path program 1 times [2021-11-19 13:18:53,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:18:53,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [268433537] [2021-11-19 13:18:53,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:18:53,924 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:18:53,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:18:53,929 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:18:53,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 13:18:54,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:18:54,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 1384 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 13:18:54,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:18:55,011 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:18:55,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:18:55,171 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:18:55,172 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:18:55,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [268433537] [2021-11-19 13:18:55,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [268433537] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:18:55,173 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:18:55,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 13:18:55,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944441558] [2021-11-19 13:18:55,178 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:18:55,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 13:18:55,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:18:55,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 13:18:55,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 13:18:55,229 INFO L87 Difference]: Start difference. First operand has 159 states, 110 states have (on average 1.3181818181818181) internal successors, (145), 109 states have internal predecessors, (145), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 13:18:55,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:18:55,314 INFO L93 Difference]: Finished difference Result 308 states and 443 transitions. [2021-11-19 13:18:55,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 13:18:55,316 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 46 [2021-11-19 13:18:55,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:18:55,334 INFO L225 Difference]: With dead ends: 308 [2021-11-19 13:18:55,335 INFO L226 Difference]: Without dead ends: 154 [2021-11-19 13:18:55,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 13:18:55,351 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:18:55,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:18:55,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-11-19 13:18:55,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2021-11-19 13:18:55,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 104 states have (on average 1.2596153846153846) internal successors, (131), 105 states have internal predecessors, (131), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-11-19 13:18:55,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 206 transitions. [2021-11-19 13:18:55,428 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 206 transitions. Word has length 46 [2021-11-19 13:18:55,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:18:55,430 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 206 transitions. [2021-11-19 13:18:55,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 13:18:55,431 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 206 transitions. [2021-11-19 13:18:55,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-19 13:18:55,434 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:18:55,434 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 13:18:55,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 13:18:55,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:18:55,659 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:18:55,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:18:55,660 INFO L85 PathProgramCache]: Analyzing trace with hash 226712846, now seen corresponding path program 1 times [2021-11-19 13:18:55,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:18:55,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382627689] [2021-11-19 13:18:55,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:18:55,663 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:18:55,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:18:55,664 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:18:55,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 13:18:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:18:56,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 1384 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:18:56,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:18:56,771 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:18:56,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:18:57,045 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 13:18:57,046 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:18:57,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382627689] [2021-11-19 13:18:57,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1382627689] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:18:57,046 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:18:57,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-19 13:18:57,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427866881] [2021-11-19 13:18:57,046 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:18:57,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:18:57,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:18:57,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:18:57,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:18:57,048 INFO L87 Difference]: Start difference. First operand 154 states and 206 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-19 13:18:57,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:18:57,277 INFO L93 Difference]: Finished difference Result 295 states and 401 transitions. [2021-11-19 13:18:57,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:18:57,278 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 46 [2021-11-19 13:18:57,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:18:57,282 INFO L225 Difference]: With dead ends: 295 [2021-11-19 13:18:57,282 INFO L226 Difference]: Without dead ends: 157 [2021-11-19 13:18:57,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:18:57,284 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 75 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:18:57,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 663 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:18:57,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-11-19 13:18:57,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2021-11-19 13:18:57,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 106 states have (on average 1.2547169811320755) internal successors, (133), 108 states have internal predecessors, (133), 38 states have call successors, (38), 11 states have call predecessors, (38), 12 states have return successors, (43), 37 states have call predecessors, (43), 37 states have call successors, (43) [2021-11-19 13:18:57,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 214 transitions. [2021-11-19 13:18:57,306 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 214 transitions. Word has length 46 [2021-11-19 13:18:57,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:18:57,307 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 214 transitions. [2021-11-19 13:18:57,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-19 13:18:57,307 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 214 transitions. [2021-11-19 13:18:57,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-19 13:18:57,309 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:18:57,309 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 13:18:57,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 13:18:57,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:18:57,528 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:18:57,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:18:57,528 INFO L85 PathProgramCache]: Analyzing trace with hash 789175353, now seen corresponding path program 1 times [2021-11-19 13:18:57,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:18:57,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221237730] [2021-11-19 13:18:57,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:18:57,532 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:18:57,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:18:57,533 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:18:57,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 13:18:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:18:58,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 1397 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 13:18:58,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:18:58,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-19 13:18:59,555 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:18:59,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:19:00,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2021-11-19 13:19:00,645 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 13:19:00,645 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:19:00,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221237730] [2021-11-19 13:19:00,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1221237730] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:19:00,646 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:19:00,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 18 [2021-11-19 13:19:00,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563967023] [2021-11-19 13:19:00,646 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:19:00,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 13:19:00,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:19:00,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 13:19:00,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-11-19 13:19:00,648 INFO L87 Difference]: Start difference. First operand 157 states and 214 transitions. Second operand has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 15 states have internal predecessors, (57), 6 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2021-11-19 13:19:02,784 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:19:03,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:19:03,963 INFO L93 Difference]: Finished difference Result 328 states and 454 transitions. [2021-11-19 13:19:03,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 13:19:03,964 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 15 states have internal predecessors, (57), 6 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) Word has length 52 [2021-11-19 13:19:03,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:19:03,966 INFO L225 Difference]: With dead ends: 328 [2021-11-19 13:19:03,966 INFO L226 Difference]: Without dead ends: 182 [2021-11-19 13:19:03,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:19:03,968 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 109 mSDsluCounter, 1964 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 2163 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 137 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:19:03,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 2163 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 241 Invalid, 1 Unknown, 137 Unchecked, 3.1s Time] [2021-11-19 13:19:03,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-19 13:19:03,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 180. [2021-11-19 13:19:03,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 124 states have (on average 1.25) internal successors, (155), 127 states have internal predecessors, (155), 42 states have call successors, (42), 12 states have call predecessors, (42), 13 states have return successors, (54), 40 states have call predecessors, (54), 41 states have call successors, (54) [2021-11-19 13:19:03,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 251 transitions. [2021-11-19 13:19:03,993 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 251 transitions. Word has length 52 [2021-11-19 13:19:03,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:19:03,994 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 251 transitions. [2021-11-19 13:19:03,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 15 states have internal predecessors, (57), 6 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2021-11-19 13:19:03,994 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 251 transitions. [2021-11-19 13:19:03,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-19 13:19:03,996 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:19:03,996 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 13:19:04,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 13:19:04,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:19:04,223 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:19:04,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:19:04,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1582563909, now seen corresponding path program 1 times [2021-11-19 13:19:04,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:19:04,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1070800199] [2021-11-19 13:19:04,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:04,226 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:19:04,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:19:04,226 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:19:04,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 13:19:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:05,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:19:05,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:19:05,185 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:05,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:19:05,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 13:19:05,344 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:19:05,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1070800199] [2021-11-19 13:19:05,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1070800199] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:19:05,344 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:19:05,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 13:19:05,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475779868] [2021-11-19 13:19:05,345 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:19:05,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:19:05,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:19:05,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:19:05,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:19:05,346 INFO L87 Difference]: Start difference. First operand 180 states and 251 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-19 13:19:05,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:19:05,413 INFO L93 Difference]: Finished difference Result 345 states and 491 transitions. [2021-11-19 13:19:05,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:19:05,414 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 52 [2021-11-19 13:19:05,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:19:05,417 INFO L225 Difference]: With dead ends: 345 [2021-11-19 13:19:05,417 INFO L226 Difference]: Without dead ends: 190 [2021-11-19 13:19:05,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:19:05,419 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 20 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:19:05,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 610 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:19:05,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-11-19 13:19:05,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 178. [2021-11-19 13:19:05,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 122 states have (on average 1.2459016393442623) internal successors, (152), 125 states have internal predecessors, (152), 42 states have call successors, (42), 12 states have call predecessors, (42), 13 states have return successors, (54), 40 states have call predecessors, (54), 41 states have call successors, (54) [2021-11-19 13:19:05,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 248 transitions. [2021-11-19 13:19:05,446 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 248 transitions. Word has length 52 [2021-11-19 13:19:05,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:19:05,446 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 248 transitions. [2021-11-19 13:19:05,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-19 13:19:05,447 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 248 transitions. [2021-11-19 13:19:05,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-19 13:19:05,449 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:19:05,450 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:19:05,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 13:19:05,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:19:05,675 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:19:05,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:19:05,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1160316351, now seen corresponding path program 1 times [2021-11-19 13:19:05,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:19:05,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1264643955] [2021-11-19 13:19:05,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:05,677 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:19:05,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:19:05,678 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:19:05,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 13:19:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:06,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 1406 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 13:19:06,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:19:07,246 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:07,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:19:07,782 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 13:19:07,782 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:19:07,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1264643955] [2021-11-19 13:19:07,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1264643955] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:19:07,782 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:19:07,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-19 13:19:07,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989568406] [2021-11-19 13:19:07,782 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:19:07,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:19:07,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:19:07,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:19:07,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:19:07,784 INFO L87 Difference]: Start difference. First operand 178 states and 248 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-19 13:19:09,879 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:19:11,888 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:19:13,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:19:13,137 INFO L93 Difference]: Finished difference Result 364 states and 528 transitions. [2021-11-19 13:19:13,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:19:13,140 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 56 [2021-11-19 13:19:13,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:19:13,143 INFO L225 Difference]: With dead ends: 364 [2021-11-19 13:19:13,143 INFO L226 Difference]: Without dead ends: 207 [2021-11-19 13:19:13,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:19:13,145 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 77 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:19:13,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 792 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 98 Invalid, 2 Unknown, 4 Unchecked, 5.1s Time] [2021-11-19 13:19:13,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-19 13:19:13,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 187. [2021-11-19 13:19:13,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 131 states have (on average 1.251908396946565) internal successors, (164), 134 states have internal predecessors, (164), 42 states have call successors, (42), 12 states have call predecessors, (42), 13 states have return successors, (54), 40 states have call predecessors, (54), 41 states have call successors, (54) [2021-11-19 13:19:13,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 260 transitions. [2021-11-19 13:19:13,168 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 260 transitions. Word has length 56 [2021-11-19 13:19:13,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:19:13,168 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 260 transitions. [2021-11-19 13:19:13,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-19 13:19:13,169 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 260 transitions. [2021-11-19 13:19:13,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-19 13:19:13,170 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:19:13,170 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:19:13,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 13:19:13,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:19:13,389 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:19:13,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:19:13,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1669789441, now seen corresponding path program 1 times [2021-11-19 13:19:13,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:19:13,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [603181110] [2021-11-19 13:19:13,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:13,392 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:19:13,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:19:13,392 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:19:13,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 13:19:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:14,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 1403 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 13:19:14,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:19:15,897 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:19:15,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:19:17,744 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:19:17,745 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:19:17,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [603181110] [2021-11-19 13:19:17,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [603181110] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:19:17,745 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:19:17,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 19 [2021-11-19 13:19:17,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738840154] [2021-11-19 13:19:17,745 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:19:17,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-19 13:19:17,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:19:17,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-19 13:19:17,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-11-19 13:19:17,747 INFO L87 Difference]: Start difference. First operand 187 states and 260 transitions. Second operand has 19 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 3 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-19 13:19:19,862 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:19:23,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:19:23,641 INFO L93 Difference]: Finished difference Result 370 states and 542 transitions. [2021-11-19 13:19:23,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 13:19:23,645 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 3 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 56 [2021-11-19 13:19:23,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:19:23,648 INFO L225 Difference]: With dead ends: 370 [2021-11-19 13:19:23,648 INFO L226 Difference]: Without dead ends: 203 [2021-11-19 13:19:23,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=123, Invalid=689, Unknown=0, NotChecked=0, Total=812 [2021-11-19 13:19:23,650 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 78 mSDsluCounter, 2645 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 2852 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 246 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:19:23,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 2852 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 258 Invalid, 1 Unknown, 246 Unchecked, 3.4s Time] [2021-11-19 13:19:23,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-11-19 13:19:23,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 192. [2021-11-19 13:19:23,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 135 states have (on average 1.2296296296296296) internal successors, (166), 139 states have internal predecessors, (166), 42 states have call successors, (42), 12 states have call predecessors, (42), 14 states have return successors, (62), 40 states have call predecessors, (62), 41 states have call successors, (62) [2021-11-19 13:19:23,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 270 transitions. [2021-11-19 13:19:23,687 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 270 transitions. Word has length 56 [2021-11-19 13:19:23,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:19:23,687 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 270 transitions. [2021-11-19 13:19:23,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 3 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-19 13:19:23,688 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 270 transitions. [2021-11-19 13:19:23,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-19 13:19:23,693 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:19:23,694 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:19:23,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 13:19:23,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:19:23,907 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:19:23,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:19:23,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1232702909, now seen corresponding path program 1 times [2021-11-19 13:19:23,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:19:23,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [162142017] [2021-11-19 13:19:23,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:23,910 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:19:23,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:19:23,911 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:19:23,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 13:19:24,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:24,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 1404 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:19:24,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:19:24,906 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:24,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:19:25,050 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 13:19:25,051 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:19:25,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [162142017] [2021-11-19 13:19:25,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [162142017] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:19:25,051 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:19:25,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 13:19:25,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577277132] [2021-11-19 13:19:25,051 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:19:25,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:19:25,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:19:25,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:19:25,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:19:25,053 INFO L87 Difference]: Start difference. First operand 192 states and 270 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-19 13:19:25,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:19:25,117 INFO L93 Difference]: Finished difference Result 372 states and 545 transitions. [2021-11-19 13:19:25,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:19:25,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 56 [2021-11-19 13:19:25,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:19:25,120 INFO L225 Difference]: With dead ends: 372 [2021-11-19 13:19:25,121 INFO L226 Difference]: Without dead ends: 201 [2021-11-19 13:19:25,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:19:25,123 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 34 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:19:25,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 601 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:19:25,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-11-19 13:19:25,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 188. [2021-11-19 13:19:25,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 131 states have (on average 1.213740458015267) internal successors, (159), 135 states have internal predecessors, (159), 42 states have call successors, (42), 12 states have call predecessors, (42), 14 states have return successors, (62), 40 states have call predecessors, (62), 41 states have call successors, (62) [2021-11-19 13:19:25,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 263 transitions. [2021-11-19 13:19:25,156 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 263 transitions. Word has length 56 [2021-11-19 13:19:25,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:19:25,156 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 263 transitions. [2021-11-19 13:19:25,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-19 13:19:25,157 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 263 transitions. [2021-11-19 13:19:25,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-19 13:19:25,159 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:19:25,159 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:19:25,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 13:19:25,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:19:25,379 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:19:25,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:19:25,379 INFO L85 PathProgramCache]: Analyzing trace with hash -531103035, now seen corresponding path program 1 times [2021-11-19 13:19:25,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:19:25,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [237925287] [2021-11-19 13:19:25,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:25,381 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:19:25,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:19:25,382 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:19:25,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 13:19:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:26,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 1401 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:19:26,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:19:26,311 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:19:26,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:19:26,551 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:19:26,552 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:19:26,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [237925287] [2021-11-19 13:19:26,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [237925287] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:19:26,552 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:19:26,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 10 [2021-11-19 13:19:26,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649383036] [2021-11-19 13:19:26,552 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:19:26,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:19:26,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:19:26,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:19:26,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:19:26,554 INFO L87 Difference]: Start difference. First operand 188 states and 263 transitions. Second operand has 10 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-19 13:19:26,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:19:26,809 INFO L93 Difference]: Finished difference Result 362 states and 515 transitions. [2021-11-19 13:19:26,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 13:19:26,811 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 56 [2021-11-19 13:19:26,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:19:26,813 INFO L225 Difference]: With dead ends: 362 [2021-11-19 13:19:26,813 INFO L226 Difference]: Without dead ends: 193 [2021-11-19 13:19:26,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:19:26,815 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 14 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:19:26,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 1344 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:19:26,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-19 13:19:26,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 188. [2021-11-19 13:19:26,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 131 states have (on average 1.213740458015267) internal successors, (159), 135 states have internal predecessors, (159), 42 states have call successors, (42), 12 states have call predecessors, (42), 14 states have return successors, (62), 40 states have call predecessors, (62), 41 states have call successors, (62) [2021-11-19 13:19:26,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 263 transitions. [2021-11-19 13:19:26,837 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 263 transitions. Word has length 56 [2021-11-19 13:19:26,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:19:26,838 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 263 transitions. [2021-11-19 13:19:26,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-19 13:19:26,838 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 263 transitions. [2021-11-19 13:19:26,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-19 13:19:26,839 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:19:26,839 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 13:19:26,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 13:19:27,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:19:27,055 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:19:27,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:19:27,055 INFO L85 PathProgramCache]: Analyzing trace with hash 262363178, now seen corresponding path program 1 times [2021-11-19 13:19:27,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:19:27,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255336715] [2021-11-19 13:19:27,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:27,058 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:19:27,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:19:27,059 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:19:27,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 13:19:27,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:28,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 1405 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:19:28,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:19:28,177 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 13:19:28,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:19:28,350 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 13:19:28,350 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:19:28,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1255336715] [2021-11-19 13:19:28,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1255336715] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:19:28,350 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:19:28,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-19 13:19:28,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488669129] [2021-11-19 13:19:28,350 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:19:28,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:19:28,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:19:28,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:19:28,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:19:28,351 INFO L87 Difference]: Start difference. First operand 188 states and 263 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-19 13:19:28,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:19:28,492 INFO L93 Difference]: Finished difference Result 262 states and 361 transitions. [2021-11-19 13:19:28,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:19:28,493 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) Word has length 58 [2021-11-19 13:19:28,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:19:28,496 INFO L225 Difference]: With dead ends: 262 [2021-11-19 13:19:28,496 INFO L226 Difference]: Without dead ends: 198 [2021-11-19 13:19:28,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:19:28,497 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 3 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:19:28,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 1626 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:19:28,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-11-19 13:19:28,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 192. [2021-11-19 13:19:28,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 135 states have (on average 1.2074074074074075) internal successors, (163), 139 states have internal predecessors, (163), 42 states have call successors, (42), 12 states have call predecessors, (42), 14 states have return successors, (62), 40 states have call predecessors, (62), 41 states have call successors, (62) [2021-11-19 13:19:28,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 267 transitions. [2021-11-19 13:19:28,518 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 267 transitions. Word has length 58 [2021-11-19 13:19:28,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:19:28,519 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 267 transitions. [2021-11-19 13:19:28,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-19 13:19:28,519 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 267 transitions. [2021-11-19 13:19:28,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-19 13:19:28,520 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:19:28,520 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:19:28,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 13:19:28,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:19:28,735 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:19:28,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:19:28,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1998575503, now seen corresponding path program 1 times [2021-11-19 13:19:28,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:19:28,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810993895] [2021-11-19 13:19:28,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:28,737 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:19:28,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:19:28,738 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:19:28,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 13:19:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:29,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 1417 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 13:19:29,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:19:29,828 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-19 13:19:29,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:19:30,059 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-19 13:19:30,060 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:19:30,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810993895] [2021-11-19 13:19:30,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [810993895] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:19:30,060 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:19:30,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-19 13:19:30,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138235487] [2021-11-19 13:19:30,061 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:19:30,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:19:30,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:19:30,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:19:30,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:19:30,062 INFO L87 Difference]: Start difference. First operand 192 states and 267 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-19 13:19:30,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:19:30,404 INFO L93 Difference]: Finished difference Result 355 states and 493 transitions. [2021-11-19 13:19:30,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:19:30,405 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 66 [2021-11-19 13:19:30,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:19:30,407 INFO L225 Difference]: With dead ends: 355 [2021-11-19 13:19:30,408 INFO L226 Difference]: Without dead ends: 192 [2021-11-19 13:19:30,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:19:30,412 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 123 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:19:30,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 793 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:19:30,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-11-19 13:19:30,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2021-11-19 13:19:30,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 135 states have (on average 1.2074074074074075) internal successors, (163), 139 states have internal predecessors, (163), 42 states have call successors, (42), 12 states have call predecessors, (42), 14 states have return successors, (60), 40 states have call predecessors, (60), 41 states have call successors, (60) [2021-11-19 13:19:30,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 265 transitions. [2021-11-19 13:19:30,433 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 265 transitions. Word has length 66 [2021-11-19 13:19:30,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:19:30,434 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 265 transitions. [2021-11-19 13:19:30,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-19 13:19:30,434 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 265 transitions. [2021-11-19 13:19:30,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-19 13:19:30,441 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:19:30,441 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:19:30,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 13:19:30,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:19:30,663 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:19:30,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:19:30,663 INFO L85 PathProgramCache]: Analyzing trace with hash 2127062054, now seen corresponding path program 1 times [2021-11-19 13:19:30,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:19:30,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [869964582] [2021-11-19 13:19:30,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:19:30,665 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:19:30,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:19:30,666 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:19:30,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 13:19:31,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:19:31,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 1430 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-19 13:19:31,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:19:33,739 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:19:33,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:19:45,965 WARN L227 SmtUtils]: Spent 9.68s on a formula simplification. DAG size of input: 526 DAG size of output: 272 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 13:19:45,969 INFO L354 Elim1Store]: treesize reduction 897, result has 45.1 percent of original size [2021-11-19 13:19:45,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 132 treesize of output 771 [2021-11-19 13:28:33,960 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-19 13:28:33,960 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:28:33,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [869964582] [2021-11-19 13:28:33,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [869964582] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:28:33,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [401588991] [2021-11-19 13:28:33,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:28:33,962 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:28:33,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:28:33,967 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:28:33,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-19 13:28:34,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:28:34,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 1430 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:28:34,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:28:35,341 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 13:28:35,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:28:36,138 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 13:28:36,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [401588991] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:28:36,138 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:28:36,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [12, 10] total 26 [2021-11-19 13:28:36,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026225906] [2021-11-19 13:28:36,139 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:28:36,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:28:36,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:28:36,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:28:36,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2021-11-19 13:28:36,142 INFO L87 Difference]: Start difference. First operand 192 states and 265 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-19 13:28:36,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:28:36,368 INFO L93 Difference]: Finished difference Result 246 states and 330 transitions. [2021-11-19 13:28:36,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:28:36,370 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 72 [2021-11-19 13:28:36,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:28:36,373 INFO L225 Difference]: With dead ends: 246 [2021-11-19 13:28:36,373 INFO L226 Difference]: Without dead ends: 190 [2021-11-19 13:28:36,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 258 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=81, Invalid=621, Unknown=0, NotChecked=0, Total=702 [2021-11-19 13:28:36,375 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 3 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1439 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:28:36,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 1439 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:28:36,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-11-19 13:28:36,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 183. [2021-11-19 13:28:36,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 129 states have (on average 1.2093023255813953) internal successors, (156), 133 states have internal predecessors, (156), 39 states have call successors, (39), 12 states have call predecessors, (39), 14 states have return successors, (57), 37 states have call predecessors, (57), 38 states have call successors, (57) [2021-11-19 13:28:36,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 252 transitions. [2021-11-19 13:28:36,405 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 252 transitions. Word has length 72 [2021-11-19 13:28:36,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:28:36,406 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 252 transitions. [2021-11-19 13:28:36,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-19 13:28:36,407 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 252 transitions. [2021-11-19 13:28:36,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-19 13:28:36,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:28:36,409 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:28:36,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 13:28:36,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-19 13:28:36,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:28:36,823 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:28:36,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:28:36,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1060286194, now seen corresponding path program 1 times [2021-11-19 13:28:36,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:28:36,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808244168] [2021-11-19 13:28:36,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:28:36,827 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:28:36,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:28:36,829 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:28:36,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63451664-470d-4afe-9f88-eb36ab16270f/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 13:28:37,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:28:37,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 1433 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 13:28:37,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:28:40,811 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:28:40,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:28:56,280 WARN L227 SmtUtils]: Spent 12.44s on a formula simplification. DAG size of input: 526 DAG size of output: 272 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 13:28:56,283 INFO L354 Elim1Store]: treesize reduction 897, result has 45.1 percent of original size [2021-11-19 13:28:56,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 132 treesize of output 771