./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_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_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/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_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/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_c5586629-2e62-48bb-ad42-f35c67578216/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 39617118f1cddf1edf0da2bed0d1b7ba56db146c1be6da9375c591252f5b5d55 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:50:28,951 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:50:28,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:50:29,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:50:29,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:50:29,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:50:29,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:50:29,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:50:29,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:50:29,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:50:29,026 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:50:29,028 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:50:29,029 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:50:29,031 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:50:29,033 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:50:29,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:50:29,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:50:29,039 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:50:29,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:50:29,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:50:29,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:50:29,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:50:29,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:50:29,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:50:29,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:50:29,060 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:50:29,060 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:50:29,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:50:29,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:50:29,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:50:29,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:50:29,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:50:29,068 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:50:29,070 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:50:29,071 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:50:29,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:50:29,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:50:29,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:50:29,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:50:29,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:50:29,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:50:29,077 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 15:50:29,110 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:50:29,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:50:29,112 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:50:29,112 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:50:29,113 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:50:29,113 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:50:29,113 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:50:29,114 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 15:50:29,114 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:50:29,114 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:50:29,115 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 15:50:29,115 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 15:50:29,115 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:50:29,116 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 15:50:29,116 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 15:50:29,117 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 15:50:29,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:50:29,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 15:50:29,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:50:29,125 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:50:29,125 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:50:29,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:50:29,126 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:50:29,126 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:50:29,127 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:50:29,127 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:50:29,127 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:50:29,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:50:29,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:50:29,128 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:50:29,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:50:29,129 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:50:29,129 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 15:50:29,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 15:50:29,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:50:29,130 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:50:29,130 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:50:29,130 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_c5586629-2e62-48bb-ad42-f35c67578216/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39617118f1cddf1edf0da2bed0d1b7ba56db146c1be6da9375c591252f5b5d55 [2021-11-19 15:50:29,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:50:29,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:50:29,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:50:29,522 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:50:29,523 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:50:29,525 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness.i [2021-11-19 15:50:29,621 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/data/60603e64b/8255f222ac4c4abc8f994067300fea5e/FLAGfaa314bab [2021-11-19 15:50:30,576 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:50:30,578 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness.i [2021-11-19 15:50:30,635 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/data/60603e64b/8255f222ac4c4abc8f994067300fea5e/FLAGfaa314bab [2021-11-19 15:50:31,051 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/data/60603e64b/8255f222ac4c4abc8f994067300fea5e [2021-11-19 15:50:31,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:50:31,057 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:50:31,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:50:31,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:50:31,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:50:31,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:50:31" (1/1) ... [2021-11-19 15:50:31,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@770f6c05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:31, skipping insertion in model container [2021-11-19 15:50:31,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:50:31" (1/1) ... [2021-11-19 15:50:31,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:50:31,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:50:31,535 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_c5586629-2e62-48bb-ad42-f35c67578216/sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness.i[4500,4513] [2021-11-19 15:50:31,543 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_c5586629-2e62-48bb-ad42-f35c67578216/sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness.i[4560,4573] [2021-11-19 15:50:31,571 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:50:31,578 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:50:32,503 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:32,504 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:32,505 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:32,507 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:32,509 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:32,531 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:32,532 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:32,535 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:32,536 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:32,539 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:32,541 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:32,542 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:32,543 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:32,992 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:50:32,994 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:50:32,996 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:50:32,997 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:50:33,000 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:50:33,001 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:50:33,002 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:50:33,004 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:50:33,005 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:50:33,006 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:50:33,207 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:50:33,236 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:50:33,256 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 15:50:33,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1b80147c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:33, skipping insertion in model container [2021-11-19 15:50:33,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:50:33,258 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 15:50:33,260 INFO L158 Benchmark]: Toolchain (without parser) took 2202.53ms. Allocated memory was 98.6MB in the beginning and 142.6MB in the end (delta: 44.0MB). Free memory was 52.7MB in the beginning and 73.1MB in the end (delta: -20.4MB). Peak memory consumption was 23.7MB. Max. memory is 16.1GB. [2021-11-19 15:50:33,261 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 98.6MB. Free memory is still 76.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:50:33,262 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2199.01ms. Allocated memory was 98.6MB in the beginning and 142.6MB in the end (delta: 44.0MB). Free memory was 52.5MB in the beginning and 73.1MB in the end (delta: -20.6MB). Peak memory consumption was 23.7MB. Max. memory is 16.1GB. [2021-11-19 15:50:33,264 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 98.6MB. Free memory is still 76.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2199.01ms. Allocated memory was 98.6MB in the beginning and 142.6MB in the end (delta: 44.0MB). Free memory was 52.5MB in the beginning and 73.1MB in the end (delta: -20.6MB). Peak memory consumption was 23.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7039]: 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_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/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_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/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_c5586629-2e62-48bb-ad42-f35c67578216/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 39617118f1cddf1edf0da2bed0d1b7ba56db146c1be6da9375c591252f5b5d55 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:50:36,027 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:50:36,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:50:36,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:50:36,113 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:50:36,119 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:50:36,123 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:50:36,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:50:36,139 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:50:36,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:50:36,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:50:36,153 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:50:36,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:50:36,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:50:36,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:50:36,159 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:50:36,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:50:36,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:50:36,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:50:36,166 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:50:36,169 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:50:36,170 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:50:36,172 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:50:36,173 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:50:36,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:50:36,178 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:50:36,178 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:50:36,180 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:50:36,180 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:50:36,182 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:50:36,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:50:36,184 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:50:36,185 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:50:36,186 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:50:36,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:50:36,188 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:50:36,189 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:50:36,189 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:50:36,190 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:50:36,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:50:36,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:50:36,193 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 15:50:36,226 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:50:36,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:50:36,228 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:50:36,229 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:50:36,229 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:50:36,229 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:50:36,230 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:50:36,230 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:50:36,230 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:50:36,230 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:50:36,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:50:36,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:50:36,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:50:36,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:50:36,234 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:50:36,234 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:50:36,235 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 15:50:36,235 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 15:50:36,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:50:36,235 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:50:36,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:50:36,236 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:50:36,236 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 15:50:36,237 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:50:36,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:50:36,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:50:36,237 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:50:36,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:50:36,238 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 15:50:36,238 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 15:50:36,238 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:50:36,239 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:50:36,239 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:50:36,239 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_c5586629-2e62-48bb-ad42-f35c67578216/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39617118f1cddf1edf0da2bed0d1b7ba56db146c1be6da9375c591252f5b5d55 [2021-11-19 15:50:36,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:50:36,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:50:36,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:50:36,736 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:50:36,737 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:50:36,738 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness.i [2021-11-19 15:50:36,840 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/data/9ea228888/96f8b20e7972411fa34b4d54ea5e9c03/FLAGf88307b2b [2021-11-19 15:50:37,986 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:50:37,988 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness.i [2021-11-19 15:50:38,034 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/data/9ea228888/96f8b20e7972411fa34b4d54ea5e9c03/FLAGf88307b2b [2021-11-19 15:50:38,382 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/data/9ea228888/96f8b20e7972411fa34b4d54ea5e9c03 [2021-11-19 15:50:38,384 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:50:38,386 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:50:38,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:50:38,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:50:38,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:50:38,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:50:38" (1/1) ... [2021-11-19 15:50:38,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41b2407e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:38, skipping insertion in model container [2021-11-19 15:50:38,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:50:38" (1/1) ... [2021-11-19 15:50:38,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:50:38,567 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:50:38,942 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_c5586629-2e62-48bb-ad42-f35c67578216/sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness.i[4500,4513] [2021-11-19 15:50:38,949 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_c5586629-2e62-48bb-ad42-f35c67578216/sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness.i[4560,4573] [2021-11-19 15:50:38,977 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:50:38,984 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:50:40,073 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:40,075 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:40,076 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:40,078 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:40,079 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:40,112 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:40,113 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:40,118 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:40,121 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:40,126 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:40,130 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:40,135 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:40,136 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:40,675 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:50:40,677 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:50:40,678 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:50:40,680 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:50:40,682 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:50:40,683 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:50:40,684 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:50:40,685 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:50:40,686 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:50:40,687 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:50:40,854 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:50:40,887 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:50:40,917 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 15:50:40,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:50:40,965 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_c5586629-2e62-48bb-ad42-f35c67578216/sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness.i[4500,4513] [2021-11-19 15:50:40,966 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_c5586629-2e62-48bb-ad42-f35c67578216/sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness.i[4560,4573] [2021-11-19 15:50:40,968 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:50:40,969 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:50:41,027 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:41,028 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:41,028 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:41,029 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:41,030 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:41,041 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:41,042 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:41,044 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:41,045 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:41,046 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:41,048 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:41,048 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:41,049 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:41,120 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:50:41,133 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:50:41,135 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:50:41,136 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:50:41,144 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:50:41,145 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:50:41,145 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:50:41,146 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:50:41,147 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:50:41,147 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:50:41,203 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:50:41,235 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:50:41,251 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 15:50:41,278 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_c5586629-2e62-48bb-ad42-f35c67578216/sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness.i[4500,4513] [2021-11-19 15:50:41,278 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_c5586629-2e62-48bb-ad42-f35c67578216/sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness.i[4560,4573] [2021-11-19 15:50:41,280 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:50:41,281 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:50:41,342 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:41,343 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:41,343 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:41,343 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:41,344 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:41,360 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:41,360 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:41,363 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:41,364 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:41,365 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:41,368 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:41,369 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:41,370 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:50:41,410 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:50:41,453 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:50:41,454 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:50:41,454 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:50:41,455 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:50:41,455 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:50:41,456 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:50:41,457 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:50:41,457 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:50:41,458 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:50:41,493 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:50:41,518 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:50:41,763 INFO L208 MainTranslator]: Completed translation [2021-11-19 15:50:41,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:41 WrapperNode [2021-11-19 15:50:41,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:50:41,766 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 15:50:41,766 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 15:50:41,767 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 15:50:41,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:41" (1/1) ... [2021-11-19 15:50:41,903 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:41" (1/1) ... [2021-11-19 15:50:41,962 INFO L137 Inliner]: procedures = 700, calls = 1034, calls flagged for inlining = 48, calls inlined = 3, statements flattened = 29 [2021-11-19 15:50:41,964 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 15:50:41,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 15:50:41,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 15:50:41,966 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 15:50:41,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:41" (1/1) ... [2021-11-19 15:50:41,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:41" (1/1) ... [2021-11-19 15:50:41,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:41" (1/1) ... [2021-11-19 15:50:41,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:41" (1/1) ... [2021-11-19 15:50:42,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:41" (1/1) ... [2021-11-19 15:50:42,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:41" (1/1) ... [2021-11-19 15:50:42,029 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:41" (1/1) ... [2021-11-19 15:50:42,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 15:50:42,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 15:50:42,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 15:50:42,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 15:50:42,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:41" (1/1) ... [2021-11-19 15:50:42,049 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:50:42,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:50:42,080 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 15:50:42,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 15:50:42,140 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_reset [2021-11-19 15:50:42,141 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_reset [2021-11-19 15:50:42,141 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-11-19 15:50:42,141 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-11-19 15:50:42,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 15:50:42,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 15:50:42,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 15:50:42,142 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 15:50:42,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 15:50:42,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 15:50:42,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 15:50:42,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 15:50:42,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 15:50:42,144 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 15:50:42,144 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 15:50:42,144 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 15:50:42,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 15:50:42,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 15:50:42,410 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 15:50:42,413 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 15:50:42,641 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 15:50:42,649 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 15:50:42,650 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-19 15:50:42,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:50:42 BoogieIcfgContainer [2021-11-19 15:50:42,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 15:50:42,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 15:50:42,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 15:50:42,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 15:50:42,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 03:50:38" (1/3) ... [2021-11-19 15:50:42,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16c7928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:50:42, skipping insertion in model container [2021-11-19 15:50:42,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:41" (2/3) ... [2021-11-19 15:50:42,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16c7928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:50:42, skipping insertion in model container [2021-11-19 15:50:42,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:50:42" (3/3) ... [2021-11-19 15:50:42,663 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_node_reset_harness.i [2021-11-19 15:50:42,669 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 15:50:42,670 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 15:50:42,730 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 15:50:42,738 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 15:50:42,738 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 15:50:42,759 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 29 states have internal predecessors, (36), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-19 15:50:42,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 15:50:42,766 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:42,767 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:42,768 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:50:42,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:42,775 INFO L85 PathProgramCache]: Analyzing trace with hash -527313499, now seen corresponding path program 1 times [2021-11-19 15:50:42,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:42,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1047032803] [2021-11-19 15:50:42,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:42,793 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:42,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:42,797 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:42,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 15:50:43,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:43,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 15:50:43,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:43,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:43,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:43,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:43,291 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:43,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1047032803] [2021-11-19 15:50:43,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1047032803] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:43,292 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:43,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 15:50:43,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220399429] [2021-11-19 15:50:43,296 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:43,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 15:50:43,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:43,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 15:50:43,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 15:50:43,374 INFO L87 Difference]: Start difference. First operand has 41 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 29 states have internal predecessors, (36), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-19 15:50:43,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:43,403 INFO L93 Difference]: Finished difference Result 75 states and 96 transitions. [2021-11-19 15:50:43,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 15:50:43,417 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2021-11-19 15:50:43,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:43,427 INFO L225 Difference]: With dead ends: 75 [2021-11-19 15:50:43,434 INFO L226 Difference]: Without dead ends: 36 [2021-11-19 15:50:43,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 38 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 15:50:43,442 INFO L933 BasicCegarLoop]: 45 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, 45 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 15:50:43,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:50:43,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-11-19 15:50:43,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-11-19 15:50:43,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-19 15:50:43,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2021-11-19 15:50:43,546 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 20 [2021-11-19 15:50:43,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:43,547 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2021-11-19 15:50:43,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-19 15:50:43,547 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2021-11-19 15:50:43,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-19 15:50:43,550 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:43,550 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:43,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:43,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:43,775 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:50:43,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:43,777 INFO L85 PathProgramCache]: Analyzing trace with hash 74286250, now seen corresponding path program 1 times [2021-11-19 15:50:43,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:43,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1639280503] [2021-11-19 15:50:43,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:43,778 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:43,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:43,780 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:43,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 15:50:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:43,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:50:43,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:44,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:44,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:44,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:44,324 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:44,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1639280503] [2021-11-19 15:50:44,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1639280503] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:44,325 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:44,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 15:50:44,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078851342] [2021-11-19 15:50:44,326 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:44,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:50:44,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:44,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:50:44,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:50:44,333 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 15:50:44,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:44,438 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2021-11-19 15:50:44,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:50:44,439 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 26 [2021-11-19 15:50:44,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:44,441 INFO L225 Difference]: With dead ends: 64 [2021-11-19 15:50:44,441 INFO L226 Difference]: Without dead ends: 38 [2021-11-19 15:50:44,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:50:44,444 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 4 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:44,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 185 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:50:44,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-19 15:50:44,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-11-19 15:50:44,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.16) internal successors, (29), 26 states have internal predecessors, (29), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-19 15:50:44,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2021-11-19 15:50:44,464 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 26 [2021-11-19 15:50:44,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:44,466 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2021-11-19 15:50:44,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 15:50:44,466 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2021-11-19 15:50:44,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-19 15:50:44,468 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:44,468 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:44,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:44,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:44,686 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:50:44,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:44,687 INFO L85 PathProgramCache]: Analyzing trace with hash 891828778, now seen corresponding path program 1 times [2021-11-19 15:50:44,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:44,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [228173922] [2021-11-19 15:50:44,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:44,688 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:44,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:44,691 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:44,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 15:50:44,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:44,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:50:44,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:44,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:44,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:45,307 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:45,308 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:45,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [228173922] [2021-11-19 15:50:45,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [228173922] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:50:45,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [421706226] [2021-11-19 15:50:45,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:45,309 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:50:45,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:50:45,313 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:50:45,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-19 15:50:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:45,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:50:45,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:45,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:45,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:45,931 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:45,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [421706226] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:50:45,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160239966] [2021-11-19 15:50:45,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:45,932 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:50:45,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:50:45,934 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:50:45,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-19 15:50:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:46,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 15:50:46,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:46,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:46,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:46,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:46,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160239966] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:50:46,563 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 15:50:46,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-19 15:50:46,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243150374] [2021-11-19 15:50:46,564 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 15:50:46,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 15:50:46,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:46,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 15:50:46,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-19 15:50:46,567 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-19 15:50:47,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:47,155 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2021-11-19 15:50:47,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 15:50:47,156 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 28 [2021-11-19 15:50:47,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:47,158 INFO L225 Difference]: With dead ends: 68 [2021-11-19 15:50:47,158 INFO L226 Difference]: Without dead ends: 42 [2021-11-19 15:50:47,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=122, Invalid=184, Unknown=0, NotChecked=0, Total=306 [2021-11-19 15:50:47,160 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 16 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:47,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 287 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 15:50:47,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-19 15:50:47,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-11-19 15:50:47,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 30 states have internal predecessors, (33), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-19 15:50:47,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2021-11-19 15:50:47,170 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 28 [2021-11-19 15:50:47,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:47,171 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2021-11-19 15:50:47,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-19 15:50:47,172 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2021-11-19 15:50:47,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-19 15:50:47,173 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:47,174 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 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 15:50:47,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:47,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:47,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:47,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:50:47,777 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:50:47,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:47,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1668252970, now seen corresponding path program 2 times [2021-11-19 15:50:47,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:47,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [568963428] [2021-11-19 15:50:47,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:50:47,779 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:47,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:47,781 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:47,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 15:50:47,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:50:47,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:50:47,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 15:50:47,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:48,174 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:48,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:49,099 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:49,100 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:49,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [568963428] [2021-11-19 15:50:49,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [568963428] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:50:49,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [950014088] [2021-11-19 15:50:49,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:50:49,101 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:50:49,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:50:49,113 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:50:49,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-19 15:50:49,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:50:49,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:50:49,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 15:50:49,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:49,712 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:49,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:50,104 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:50,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [950014088] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:50:50,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620068603] [2021-11-19 15:50:50,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:50:50,105 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:50:50,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:50:50,107 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:50:50,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-19 15:50:50,275 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:50:50,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:50:50,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 15:50:50,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:50,394 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:50,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:50,771 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:50,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620068603] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:50:50,772 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 15:50:50,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 10] total 18 [2021-11-19 15:50:50,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158187881] [2021-11-19 15:50:50,772 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 15:50:50,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 15:50:50,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:50:50,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 15:50:50,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-19 15:50:50,775 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 15:50:53,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:53,173 INFO L93 Difference]: Finished difference Result 76 states and 91 transitions. [2021-11-19 15:50:53,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-19 15:50:53,182 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 32 [2021-11-19 15:50:53,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:53,183 INFO L225 Difference]: With dead ends: 76 [2021-11-19 15:50:53,184 INFO L226 Difference]: Without dead ends: 50 [2021-11-19 15:50:53,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=242, Invalid=408, Unknown=0, NotChecked=0, Total=650 [2021-11-19 15:50:53,186 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 47 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:53,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 321 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 15:50:53,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-19 15:50:53,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-11-19 15:50:53,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 38 states have internal predecessors, (41), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-19 15:50:53,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2021-11-19 15:50:53,198 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 32 [2021-11-19 15:50:53,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:53,199 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2021-11-19 15:50:53,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 15:50:53,199 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2021-11-19 15:50:53,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-19 15:50:53,201 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:53,201 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 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 15:50:53,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:53,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:53,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:53,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:50:53,809 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:50:53,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:53,810 INFO L85 PathProgramCache]: Analyzing trace with hash 988125994, now seen corresponding path program 3 times [2021-11-19 15:50:53,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:50:53,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1306485571] [2021-11-19 15:50:53,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 15:50:53,811 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:50:53,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:50:53,812 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:50:53,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 15:50:54,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-19 15:50:54,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:50:54,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 15:50:54,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:54,592 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:54,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:57,307 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:57,307 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:50:57,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1306485571] [2021-11-19 15:50:57,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1306485571] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:50:57,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1366525445] [2021-11-19 15:50:57,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 15:50:57,308 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:50:57,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:50:57,314 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:50:57,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-19 15:50:58,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-19 15:50:58,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:50:58,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 15:50:58,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:58,870 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:58,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:59,954 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:59,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1366525445] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:50:59,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739398123] [2021-11-19 15:50:59,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 15:50:59,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:50:59,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:50:59,957 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:50:59,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-19 15:51:20,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-19 15:51:20,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:51:20,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 15:51:20,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:20,919 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:20,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:51:21,835 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:51:21,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739398123] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:51:21,836 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 15:51:21,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18, 18, 18, 18] total 34 [2021-11-19 15:51:21,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259394795] [2021-11-19 15:51:21,836 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 15:51:21,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-19 15:51:21,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:51:21,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-19 15:51:21,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=814, Unknown=0, NotChecked=0, Total=1122 [2021-11-19 15:51:21,839 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 34 states have internal predecessors, (53), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 15:51:33,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:51:33,690 INFO L93 Difference]: Finished difference Result 92 states and 115 transitions. [2021-11-19 15:51:33,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-19 15:51:33,692 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 34 states have internal predecessors, (53), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 40 [2021-11-19 15:51:33,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:51:33,694 INFO L225 Difference]: With dead ends: 92 [2021-11-19 15:51:33,694 INFO L226 Difference]: Without dead ends: 66 [2021-11-19 15:51:33,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 201 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=722, Invalid=1728, Unknown=0, NotChecked=0, Total=2450 [2021-11-19 15:51:33,697 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 162 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:51:33,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 566 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 15:51:33,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-11-19 15:51:33,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-11-19 15:51:33,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 54 states have internal predecessors, (58), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-19 15:51:33,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2021-11-19 15:51:33,712 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 40 [2021-11-19 15:51:33,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:51:33,713 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 71 transitions. [2021-11-19 15:51:33,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 34 states have internal predecessors, (53), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 15:51:33,714 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 71 transitions. [2021-11-19 15:51:33,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-19 15:51:33,716 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:51:33,716 INFO L514 BasicCegarLoop]: trace histogram [16, 1, 1, 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 15:51:33,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-11-19 15:51:33,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-19 15:51:34,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 15:51:34,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:51:34,322 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:51:34,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:51:34,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1376472918, now seen corresponding path program 4 times [2021-11-19 15:51:34,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:51:34,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1428601296] [2021-11-19 15:51:34,324 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 15:51:34,324 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:51:34,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:51:34,326 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:51:34,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 15:51:34,604 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 15:51:34,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:51:34,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-19 15:51:34,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:51:34,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2021-11-19 15:51:34,795 INFO L354 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size [2021-11-19 15:51:34,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-19 15:51:34,924 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-19 15:51:34,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 36 [2021-11-19 15:51:35,168 INFO L354 Elim1Store]: treesize reduction 107, result has 19.5 percent of original size [2021-11-19 15:51:35,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 48 [2021-11-19 15:51:35,535 INFO L354 Elim1Store]: treesize reduction 168, result has 17.2 percent of original size [2021-11-19 15:51:35,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 53 treesize of output 61 [2021-11-19 15:51:36,011 INFO L354 Elim1Store]: treesize reduction 241, result has 15.4 percent of original size [2021-11-19 15:51:36,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 63 treesize of output 74 [2021-11-19 15:51:36,565 INFO L354 Elim1Store]: treesize reduction 338, result has 13.6 percent of original size [2021-11-19 15:51:36,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 74 treesize of output 88 [2021-11-19 15:51:37,232 INFO L354 Elim1Store]: treesize reduction 446, result has 12.4 percent of original size [2021-11-19 15:51:37,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 85 treesize of output 102 [2021-11-19 15:51:38,165 INFO L354 Elim1Store]: treesize reduction 532, result has 11.8 percent of original size [2021-11-19 15:51:38,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 93 treesize of output 113 [2021-11-19 15:51:39,116 INFO L354 Elim1Store]: treesize reduction 671, result has 10.7 percent of original size [2021-11-19 15:51:39,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 104 treesize of output 127 [2021-11-19 15:51:40,477 INFO L354 Elim1Store]: treesize reduction 818, result has 9.9 percent of original size [2021-11-19 15:51:40,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 115 treesize of output 141 [2021-11-19 15:51:42,059 INFO L354 Elim1Store]: treesize reduction 979, result has 9.3 percent of original size [2021-11-19 15:51:42,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 66 case distinctions, treesize of input 126 treesize of output 155 [2021-11-19 15:51:44,025 INFO L354 Elim1Store]: treesize reduction 1154, result has 8.7 percent of original size [2021-11-19 15:51:44,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 78 case distinctions, treesize of input 137 treesize of output 169 [2021-11-19 15:51:46,245 INFO L354 Elim1Store]: treesize reduction 1343, result has 8.2 percent of original size [2021-11-19 15:51:46,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 91 case distinctions, treesize of input 148 treesize of output 183 [2021-11-19 15:51:48,594 INFO L354 Elim1Store]: treesize reduction 1546, result has 7.8 percent of original size [2021-11-19 15:51:48,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 105 case distinctions, treesize of input 159 treesize of output 197 [2021-11-19 15:51:51,566 INFO L354 Elim1Store]: treesize reduction 1631, result has 7.6 percent of original size [2021-11-19 15:51:51,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 120 case distinctions, treesize of input 163 treesize of output 204 [2021-11-19 15:52:01,365 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:52:01,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:54:14,203 WARN L227 SmtUtils]: Spent 2.18m on a formula simplification that was a NOOP. DAG size: 151 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-19 15:55:07,457 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 118 treesize of output 116 [2021-11-19 15:55:07,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1310193 treesize of output 1310191 [2021-11-19 15:55:12,987 WARN L227 SmtUtils]: Spent 5.51s on a formula simplification that was a NOOP. DAG size: 149 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-19 15:55:32,243 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 120 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:55:32,243 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:55:32,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1428601296] [2021-11-19 15:55:32,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1428601296] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:55:32,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1754021082] [2021-11-19 15:55:32,244 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 15:55:32,244 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:55:32,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:55:32,262 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:55:32,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-19 15:55:33,446 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 15:55:33,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:55:33,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 51 conjunts are in the unsatisfiable core [2021-11-19 15:55:33,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:55:35,936 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 12 treesize of output 8 [2021-11-19 15:55:35,977 INFO L354 Elim1Store]: treesize reduction 24, result has 22.6 percent of original size [2021-11-19 15:55:35,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-11-19 15:55:36,096 INFO L354 Elim1Store]: treesize reduction 58, result has 22.7 percent of original size [2021-11-19 15:55:36,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 35 [2021-11-19 15:55:36,321 INFO L354 Elim1Store]: treesize reduction 118, result has 18.6 percent of original size [2021-11-19 15:55:36,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 50 [2021-11-19 15:55:36,606 INFO L354 Elim1Store]: treesize reduction 168, result has 17.2 percent of original size [2021-11-19 15:55:36,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 53 treesize of output 61 [2021-11-19 15:55:36,911 INFO L354 Elim1Store]: treesize reduction 251, result has 14.9 percent of original size [2021-11-19 15:55:36,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 64 treesize of output 75 [2021-11-19 15:55:37,512 INFO L354 Elim1Store]: treesize reduction 326, result has 14.0 percent of original size [2021-11-19 15:55:37,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 73 treesize of output 87 [2021-11-19 15:55:38,183 INFO L354 Elim1Store]: treesize reduction 446, result has 12.4 percent of original size [2021-11-19 15:55:38,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 85 treesize of output 102 [2021-11-19 15:55:38,861 INFO L354 Elim1Store]: treesize reduction 532, result has 11.8 percent of original size [2021-11-19 15:55:38,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 93 treesize of output 113 [2021-11-19 15:55:39,745 INFO L354 Elim1Store]: treesize reduction 671, result has 10.7 percent of original size [2021-11-19 15:55:39,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 104 treesize of output 127 [2021-11-19 15:55:40,910 INFO L354 Elim1Store]: treesize reduction 786, result has 10.2 percent of original size [2021-11-19 15:55:40,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 113 treesize of output 139 [2021-11-19 15:55:42,506 INFO L354 Elim1Store]: treesize reduction 931, result has 9.5 percent of original size [2021-11-19 15:55:42,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 66 case distinctions, treesize of input 123 treesize of output 152 [2021-11-19 15:55:44,392 INFO L354 Elim1Store]: treesize reduction 1154, result has 8.7 percent of original size [2021-11-19 15:55:44,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 78 case distinctions, treesize of input 137 treesize of output 169 [2021-11-19 15:55:46,405 INFO L354 Elim1Store]: treesize reduction 1343, result has 8.2 percent of original size [2021-11-19 15:55:46,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 91 case distinctions, treesize of input 148 treesize of output 183 [2021-11-19 15:55:48,541 INFO L354 Elim1Store]: treesize reduction 1546, result has 7.8 percent of original size [2021-11-19 15:55:48,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 105 case distinctions, treesize of input 159 treesize of output 197 [2021-11-19 15:55:51,203 INFO L354 Elim1Store]: treesize reduction 1631, result has 7.6 percent of original size [2021-11-19 15:55:51,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 120 case distinctions, treesize of input 163 treesize of output 204 [2021-11-19 15:56:02,679 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:56:02,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:58:16,282 WARN L227 SmtUtils]: Spent 2.22m on a formula simplification that was a NOOP. DAG size: 151 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-19 15:58:16,674 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 85 treesize of output 83 [2021-11-19 15:58:17,045 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 118 treesize of output 116 [2021-11-19 15:58:17,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1310703 treesize of output 1310701 [2021-11-19 15:58:38,896 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 120 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:58:38,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1754021082] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:58:38,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793269170] [2021-11-19 15:58:38,897 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 15:58:38,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:58:38,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:58:38,900 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:58:38,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5586629-2e62-48bb-ad42-f35c67578216/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-19 15:58:39,053 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 15:58:39,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:58:39,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 60 conjunts are in the unsatisfiable core [2021-11-19 15:58:39,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:58:39,117 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 15 treesize of output 11 [2021-11-19 15:58:39,196 INFO L354 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size [2021-11-19 15:58:39,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-19 15:58:39,759 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-19 15:58:39,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 36 [2021-11-19 15:58:40,547 INFO L354 Elim1Store]: treesize reduction 118, result has 18.6 percent of original size [2021-11-19 15:58:40,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 50 [2021-11-19 15:58:41,541 INFO L354 Elim1Store]: treesize reduction 168, result has 17.2 percent of original size [2021-11-19 15:58:41,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 53 treesize of output 61 [2021-11-19 15:58:42,511 INFO L354 Elim1Store]: treesize reduction 241, result has 15.4 percent of original size [2021-11-19 15:58:42,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 63 treesize of output 74 [2021-11-19 15:58:43,660 INFO L354 Elim1Store]: treesize reduction 326, result has 14.0 percent of original size [2021-11-19 15:58:43,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 73 treesize of output 87 [2021-11-19 15:58:45,001 INFO L354 Elim1Store]: treesize reduction 423, result has 12.8 percent of original size [2021-11-19 15:58:45,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 83 treesize of output 100 [2021-11-19 15:58:46,622 INFO L354 Elim1Store]: treesize reduction 548, result has 11.5 percent of original size [2021-11-19 15:58:46,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 94 treesize of output 114 [2021-11-19 15:58:48,727 INFO L354 Elim1Store]: treesize reduction 653, result has 10.9 percent of original size [2021-11-19 15:58:48,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 103 treesize of output 126 [2021-11-19 15:58:51,224 INFO L354 Elim1Store]: treesize reduction 806, result has 9.9 percent of original size [2021-11-19 15:58:51,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 114 treesize of output 140 [2021-11-19 15:58:53,869 INFO L354 Elim1Store]: treesize reduction 931, result has 9.5 percent of original size [2021-11-19 15:58:53,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 66 case distinctions, treesize of input 123 treesize of output 152 [2021-11-19 15:58:56,818 INFO L354 Elim1Store]: treesize reduction 1088, result has 9.0 percent of original size [2021-11-19 15:58:56,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 78 case distinctions, treesize of input 133 treesize of output 165 [2021-11-19 15:59:00,121 INFO L354 Elim1Store]: treesize reduction 1257, result has 8.4 percent of original size [2021-11-19 15:59:00,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 91 case distinctions, treesize of input 143 treesize of output 178 [2021-11-19 15:59:03,830 INFO L354 Elim1Store]: treesize reduction 1438, result has 8.0 percent of original size [2021-11-19 15:59:03,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 105 case distinctions, treesize of input 153 treesize of output 191 [2021-11-19 15:59:07,995 INFO L354 Elim1Store]: treesize reduction 1661, result has 7.5 percent of original size [2021-11-19 15:59:07,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 120 case distinctions, treesize of input 164 treesize of output 205 [2021-11-19 15:59:15,152 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:59:15,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 16:04:03,002 WARN L227 SmtUtils]: Spent 4.79m on a formula simplification. DAG size of input: 167 DAG size of output: 158 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-19 16:04:08,955 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 85 treesize of output 83