./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 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/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_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 39617118f1cddf1edf0da2bed0d1b7ba56db146c1be6da9375c591252f5b5d55 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:53:40,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:53:40,572 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:53:40,607 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:53:40,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:53:40,610 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:53:40,612 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:53:40,615 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:53:40,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:53:40,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:53:40,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:53:40,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:53:40,624 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:53:40,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:53:40,628 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:53:40,629 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:53:40,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:53:40,632 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:53:40,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:53:40,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:53:40,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:53:40,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:53:40,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:53:40,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:53:40,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:53:40,650 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:53:40,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:53:40,652 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:53:40,653 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:53:40,654 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:53:40,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:53:40,656 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:53:40,657 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:53:40,658 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:53:40,660 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:53:40,660 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:53:40,661 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:53:40,662 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:53:40,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:53:40,663 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:53:40,664 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:53:40,665 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 22:53:40,689 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:53:40,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:53:40,690 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:53:40,690 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:53:40,691 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:53:40,691 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:53:40,691 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:53:40,691 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:53:40,692 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:53:40,692 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:53:40,692 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:53:40,692 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:53:40,692 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:53:40,693 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:53:40,693 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:53:40,693 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:53:40,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:53:40,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:53:40,695 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:53:40,695 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:53:40,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:53:40,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:53:40,696 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:53:40,696 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:53:40,696 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:53:40,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:53:40,697 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:53:40,697 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:53:40,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:53:40,697 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:53:40,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:53:40,698 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:53:40,698 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:53:40,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:53:40,699 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:53:40,699 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:53:40,699 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:53:40,699 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_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39617118f1cddf1edf0da2bed0d1b7ba56db146c1be6da9375c591252f5b5d55 [2021-11-12 22:53:40,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:53:40,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:53:40,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:53:40,971 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:53:40,972 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:53:40,973 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness.i [2021-11-12 22:53:41,092 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/data/42a2965ce/8bef0f5ec3074ae9b01cc04ee74029c5/FLAG697f9185c [2021-11-12 22:53:42,036 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:53:42,037 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness.i [2021-11-12 22:53:42,101 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/data/42a2965ce/8bef0f5ec3074ae9b01cc04ee74029c5/FLAG697f9185c [2021-11-12 22:53:42,529 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/data/42a2965ce/8bef0f5ec3074ae9b01cc04ee74029c5 [2021-11-12 22:53:42,532 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:53:42,534 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:53:42,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:53:42,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:53:42,548 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:53:42,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:53:42" (1/1) ... [2021-11-12 22:53:42,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ddb2988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:42, skipping insertion in model container [2021-11-12 22:53:42,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:53:42" (1/1) ... [2021-11-12 22:53:42,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:53:42,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:53:43,101 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness.i[4500,4513] [2021-11-12 22:53:43,110 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness.i[4560,4573] [2021-11-12 22:53:43,137 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:53:43,144 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:53:44,222 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:44,226 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:44,227 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:44,229 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:44,232 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:44,267 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:44,268 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:44,275 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:44,278 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:44,283 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:44,286 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:44,287 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:44,288 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:44,814 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:53:44,815 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:53:44,816 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:53:44,818 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:53:44,819 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:53:44,820 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:53:44,820 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:53:44,821 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:53:44,822 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:53:44,823 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:53:44,998 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:53:45,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:53:45,039 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 22:53:45,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4e949e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:45, skipping insertion in model container [2021-11-12 22:53:45,040 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:53:45,040 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 22:53:45,042 INFO L158 Benchmark]: Toolchain (without parser) took 2507.09ms. Allocated memory is still 138.4MB. Free memory was 98.8MB in the beginning and 81.6MB in the end (delta: 17.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-11-12 22:53:45,043 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 94.4MB. Free memory was 48.4MB in the beginning and 48.3MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:53:45,044 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2503.61ms. Allocated memory is still 138.4MB. Free memory was 98.5MB in the beginning and 81.6MB in the end (delta: 16.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-11-12 22:53:45,046 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 94.4MB. Free memory was 48.4MB in the beginning and 48.3MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2503.61ms. Allocated memory is still 138.4MB. Free memory was 98.5MB in the beginning and 81.6MB in the end (delta: 16.9MB). Peak memory consumption was 21.0MB. 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_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/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_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 39617118f1cddf1edf0da2bed0d1b7ba56db146c1be6da9375c591252f5b5d55 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:53:47,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:53:47,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:53:47,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:53:47,766 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:53:47,768 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:53:47,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:53:47,774 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:53:47,777 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:53:47,778 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:53:47,780 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:53:47,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:53:47,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:53:47,784 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:53:47,789 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:53:47,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:53:47,795 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:53:47,802 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:53:47,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:53:47,839 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:53:47,841 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:53:47,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:53:47,848 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:53:47,849 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:53:47,854 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:53:47,854 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:53:47,855 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:53:47,856 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:53:47,863 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:53:47,865 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:53:47,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:53:47,867 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:53:47,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:53:47,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:53:47,873 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:53:47,874 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:53:47,875 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:53:47,875 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:53:47,876 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:53:47,878 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:53:47,879 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:53:47,885 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 22:53:47,951 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:53:47,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:53:47,953 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:53:47,953 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:53:47,953 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:53:47,954 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:53:47,954 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:53:47,954 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:53:47,954 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:53:47,955 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:53:47,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:53:47,958 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:53:47,959 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:53:47,959 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:53:47,959 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:53:47,959 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:53:47,960 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:53:47,960 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:53:47,960 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:53:47,960 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:53:47,961 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:53:47,961 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:53:47,961 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:53:47,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:53:47,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:53:47,962 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:53:47,962 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:53:47,963 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:53:47,963 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:53:47,963 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:53:47,963 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:53:47,964 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:53:47,964 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:53:47,964 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_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39617118f1cddf1edf0da2bed0d1b7ba56db146c1be6da9375c591252f5b5d55 [2021-11-12 22:53:48,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:53:48,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:53:48,511 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:53:48,513 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:53:48,514 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:53:48,516 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness.i [2021-11-12 22:53:48,604 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/data/a07041965/a3f41001a81b4cb0a420268075067881/FLAG3c5baba9f [2021-11-12 22:53:49,688 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:53:49,689 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness.i [2021-11-12 22:53:49,730 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/data/a07041965/a3f41001a81b4cb0a420268075067881/FLAG3c5baba9f [2021-11-12 22:53:50,162 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/data/a07041965/a3f41001a81b4cb0a420268075067881 [2021-11-12 22:53:50,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:53:50,166 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:53:50,168 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:53:50,169 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:53:50,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:53:50,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:53:50" (1/1) ... [2021-11-12 22:53:50,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6359e386 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:50, skipping insertion in model container [2021-11-12 22:53:50,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:53:50" (1/1) ... [2021-11-12 22:53:50,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:53:50,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:53:50,705 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness.i[4500,4513] [2021-11-12 22:53:50,714 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness.i[4560,4573] [2021-11-12 22:53:50,741 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:53:50,749 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:53:52,088 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:52,091 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:52,093 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:52,094 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:52,096 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:52,124 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:52,125 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:52,128 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:52,130 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:52,134 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:52,137 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:52,140 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:52,141 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:52,703 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:53:52,705 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:53:52,707 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:53:52,708 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:53:52,710 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:53:52,711 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:53:52,712 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:53:52,713 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:53:52,714 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:53:52,715 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:53:52,910 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:53:52,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:53:52,965 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 22:53:53,006 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:53:53,011 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness.i[4500,4513] [2021-11-12 22:53:53,012 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness.i[4560,4573] [2021-11-12 22:53:53,014 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:53:53,014 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:53:53,058 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:53,059 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:53,059 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:53,060 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:53,061 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:53,070 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:53,070 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:53,072 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:53,072 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:53,074 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:53,075 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:53,075 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:53,076 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:53,122 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:53:53,129 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:53:53,130 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:53:53,131 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:53:53,132 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:53:53,135 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:53:53,136 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:53:53,137 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:53:53,142 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:53:53,143 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:53:53,190 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:53:53,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:53:53,219 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:53:53,235 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness.i[4500,4513] [2021-11-12 22:53:53,236 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/sv-benchmarks/c/aws-c-common/aws_linked_list_node_reset_harness.i[4560,4573] [2021-11-12 22:53:53,237 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:53:53,238 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:53:53,319 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:53,320 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:53,320 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:53,324 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:53,326 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:53,342 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:53,342 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:53,344 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:53,345 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:53,346 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:53,347 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:53,348 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:53,348 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:53:53,393 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:53:53,394 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:53:53,395 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:53:53,396 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:53:53,397 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:53:53,397 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:53:53,399 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:53:53,399 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:53:53,400 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:53:53,400 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:53:53,445 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:53:53,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:53:53,813 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:53:53,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:53 WrapperNode [2021-11-12 22:53:53,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:53:53,816 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:53:53,816 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:53:53,816 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:53:53,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:53" (1/1) ... [2021-11-12 22:53:53,966 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:53" (1/1) ... [2021-11-12 22:53:54,035 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:53:54,037 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:53:54,037 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:53:54,037 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:53:54,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:53" (1/1) ... [2021-11-12 22:53:54,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:53" (1/1) ... [2021-11-12 22:53:54,067 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:53" (1/1) ... [2021-11-12 22:53:54,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:53" (1/1) ... [2021-11-12 22:53:54,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:53" (1/1) ... [2021-11-12 22:53:54,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:53" (1/1) ... [2021-11-12 22:53:54,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:53" (1/1) ... [2021-11-12 22:53:54,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:53:54,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:53:54,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:53:54,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:53:54,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:53" (1/1) ... [2021-11-12 22:53:54,157 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:53:54,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:53:54,185 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:53:54,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:53:54,246 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_reset [2021-11-12 22:53:54,246 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_reset [2021-11-12 22:53:54,246 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-11-12 22:53:54,246 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-11-12 22:53:54,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:53:54,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:53:54,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 22:53:54,248 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 22:53:54,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:53:54,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:53:54,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 22:53:54,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-12 22:53:54,249 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-12 22:53:54,249 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 22:53:54,249 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 22:53:54,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:53:54,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 22:53:54,914 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:53:54,915 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-12 22:53:54,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:53:54 BoogieIcfgContainer [2021-11-12 22:53:54,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:53:54,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:53:54,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:53:54,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:53:54,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:53:50" (1/3) ... [2021-11-12 22:53:54,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27abe588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:53:54, skipping insertion in model container [2021-11-12 22:53:54,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:53:53" (2/3) ... [2021-11-12 22:53:54,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27abe588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:53:54, skipping insertion in model container [2021-11-12 22:53:54,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:53:54" (3/3) ... [2021-11-12 22:53:54,927 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_node_reset_harness.i [2021-11-12 22:53:54,933 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:53:54,934 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:53:54,991 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:53:54,997 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 22:53:54,998 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:53:55,014 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) [2021-11-12 22:53:55,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-12 22:53:55,020 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:53:55,020 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] [2021-11-12 22:53:55,021 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:53:55,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:55,026 INFO L85 PathProgramCache]: Analyzing trace with hash -527313499, now seen corresponding path program 1 times [2021-11-12 22:53:55,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:53:55,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [909788196] [2021-11-12 22:53:55,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:55,040 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:53:55,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:53:55,043 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:53:55,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:53:55,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:55,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 22:53:55,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:53:55,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:53:55,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:53:55,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:53:55,470 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:53:55,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [909788196] [2021-11-12 22:53:55,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [909788196] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:53:55,471 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:53:55,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 22:53:55,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761875238] [2021-11-12 22:53:55,474 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:53:55,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 22:53:55,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:53:55,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 22:53:55,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:53:55,525 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) [2021-11-12 22:53:55,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:53:55,560 INFO L93 Difference]: Finished difference Result 75 states and 96 transitions. [2021-11-12 22:53:55,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 22:53:55,562 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 [2021-11-12 22:53:55,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:53:55,571 INFO L225 Difference]: With dead ends: 75 [2021-11-12 22:53:55,571 INFO L226 Difference]: Without dead ends: 36 [2021-11-12 22:53:55,574 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 [2021-11-12 22:53:55,579 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.57ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 22:53:55,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 1.57ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 22:53:55,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-11-12 22:53:55,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-11-12 22:53:55,618 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) [2021-11-12 22:53:55,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2021-11-12 22:53:55,621 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 20 [2021-11-12 22:53:55,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:53:55,622 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2021-11-12 22:53:55,622 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) [2021-11-12 22:53:55,623 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2021-11-12 22:53:55,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-12 22:53:55,625 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:53:55,625 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] [2021-11-12 22:53:55,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:53:55,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:53:55,841 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:53:55,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:55,842 INFO L85 PathProgramCache]: Analyzing trace with hash 74286250, now seen corresponding path program 1 times [2021-11-12 22:53:55,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:53:55,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208299478] [2021-11-12 22:53:55,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:55,844 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:53:55,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:53:55,850 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:53:55,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:53:56,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:56,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:53:56,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:53:56,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:53:56,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:53:56,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:53:56,362 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:53:56,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1208299478] [2021-11-12 22:53:56,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1208299478] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:53:56,362 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:53:56,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 22:53:56,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077558863] [2021-11-12 22:53:56,363 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:53:56,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:53:56,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:53:56,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:53:56,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:53:56,369 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) [2021-11-12 22:53:56,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:53:56,459 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2021-11-12 22:53:56,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:53:56,462 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 [2021-11-12 22:53:56,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:53:56,464 INFO L225 Difference]: With dead ends: 64 [2021-11-12 22:53:56,464 INFO L226 Difference]: Without dead ends: 38 [2021-11-12 22:53:56,465 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 [2021-11-12 22:53:56,466 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 4 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.99ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.61ms IncrementalHoareTripleChecker+Time [2021-11-12 22:53:56,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 185 Invalid, 14 Unknown, 0 Unchecked, 5.99ms Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 60.61ms Time] [2021-11-12 22:53:56,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-12 22:53:56,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-11-12 22:53:56,474 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) [2021-11-12 22:53:56,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2021-11-12 22:53:56,476 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 26 [2021-11-12 22:53:56,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:53:56,476 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2021-11-12 22:53:56,493 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) [2021-11-12 22:53:56,493 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2021-11-12 22:53:56,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-12 22:53:56,494 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:53:56,495 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] [2021-11-12 22:53:56,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:53:56,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:53:56,717 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:53:56,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:56,718 INFO L85 PathProgramCache]: Analyzing trace with hash 891828778, now seen corresponding path program 1 times [2021-11-12 22:53:56,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:53:56,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [268967641] [2021-11-12 22:53:56,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:56,720 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:53:56,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:53:56,721 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:53:56,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:53:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:56,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:53:56,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:53:57,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:53:57,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:53:57,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:53:57,321 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:53:57,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [268967641] [2021-11-12 22:53:57,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [268967641] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:53:57,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [346707224] [2021-11-12 22:53:57,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:57,323 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:53:57,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:53:57,329 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:53:57,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-12 22:53:57,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:57,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:53:57,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:53:57,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:53:57,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:53:57,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:53:57,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [346707224] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:53:57,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244752537] [2021-11-12 22:53:57,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:53:57,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:53:57,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:53:57,910 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:53:57,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-12 22:53:58,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:53:58,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 22:53:58,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:53:58,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:53:58,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:53:58,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:53:58,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244752537] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:53:58,598 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 22:53:58,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-12 22:53:58,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825137769] [2021-11-12 22:53:58,599 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 22:53:58,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:53:58,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:53:58,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:53:58,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:53:58,602 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) [2021-11-12 22:53:59,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:53:59,151 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2021-11-12 22:53:59,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-12 22:53:59,162 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 [2021-11-12 22:53:59,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:53:59,163 INFO L225 Difference]: With dead ends: 68 [2021-11-12 22:53:59,164 INFO L226 Difference]: Without dead ends: 42 [2021-11-12 22:53:59,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=122, Invalid=184, Unknown=0, NotChecked=0, Total=306 [2021-11-12 22:53:59,167 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 16 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 152.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.50ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 181.08ms IncrementalHoareTripleChecker+Time [2021-11-12 22:53:59,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 287 Invalid, 57 Unknown, 0 Unchecked, 5.50ms Time], IncrementalHoareTripleChecker [12 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 181.08ms Time] [2021-11-12 22:53:59,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-12 22:53:59,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-11-12 22:53:59,176 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) [2021-11-12 22:53:59,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2021-11-12 22:53:59,178 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 28 [2021-11-12 22:53:59,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:53:59,179 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2021-11-12 22:53:59,179 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) [2021-11-12 22:53:59,179 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2021-11-12 22:53:59,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-12 22:53:59,181 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:53:59,181 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] [2021-11-12 22:53:59,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-12 22:53:59,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 22:53:59,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-12 22:53:59,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:53:59,786 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:53:59,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:53:59,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1668252970, now seen corresponding path program 2 times [2021-11-12 22:53:59,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:53:59,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [490507340] [2021-11-12 22:53:59,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:53:59,788 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:53:59,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:53:59,795 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:53:59,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 22:54:00,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 22:54:00,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:54:00,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-12 22:54:00,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:54:00,310 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:54:00,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:54:01,281 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:54:01,281 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:54:01,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [490507340] [2021-11-12 22:54:01,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [490507340] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:54:01,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [170449429] [2021-11-12 22:54:01,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:54:01,282 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:54:01,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:54:01,283 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:54:01,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-12 22:54:01,781 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 22:54:01,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:54:01,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-12 22:54:01,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:54:01,931 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:54:01,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:54:02,320 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:54:02,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [170449429] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:54:02,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009458792] [2021-11-12 22:54:02,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:54:02,321 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:54:02,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:54:02,329 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:54:02,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-12 22:54:02,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 22:54:02,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:54:02,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-12 22:54:02,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:54:02,634 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:54:02,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:54:03,021 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:54:03,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009458792] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:54:03,021 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 22:54:03,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 10] total 18 [2021-11-12 22:54:03,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147891446] [2021-11-12 22:54:03,022 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 22:54:03,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-12 22:54:03,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:54:03,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-12 22:54:03,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-12 22:54:03,031 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) [2021-11-12 22:54:05,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:54:05,681 INFO L93 Difference]: Finished difference Result 76 states and 91 transitions. [2021-11-12 22:54:05,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-12 22:54:05,682 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 [2021-11-12 22:54:05,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:54:05,684 INFO L225 Difference]: With dead ends: 76 [2021-11-12 22:54:05,687 INFO L226 Difference]: Without dead ends: 50 [2021-11-12 22:54:05,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 168 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=242, Invalid=408, Unknown=0, NotChecked=0, Total=650 [2021-11-12 22:54:05,690 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 47 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 502.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.87ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 577.13ms IncrementalHoareTripleChecker+Time [2021-11-12 22:54:05,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 321 Invalid, 143 Unknown, 0 Unchecked, 5.87ms Time], IncrementalHoareTripleChecker [40 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 577.13ms Time] [2021-11-12 22:54:05,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-12 22:54:05,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-11-12 22:54:05,710 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) [2021-11-12 22:54:05,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2021-11-12 22:54:05,712 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 32 [2021-11-12 22:54:05,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:54:05,717 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2021-11-12 22:54:05,718 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) [2021-11-12 22:54:05,718 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2021-11-12 22:54:05,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-12 22:54:05,720 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:54:05,720 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] [2021-11-12 22:54:05,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-12 22:54:05,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-12 22:54:06,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 22:54:06,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:54:06,342 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:54:06,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:54:06,343 INFO L85 PathProgramCache]: Analyzing trace with hash 988125994, now seen corresponding path program 3 times [2021-11-12 22:54:06,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:54:06,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1056447021] [2021-11-12 22:54:06,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 22:54:06,344 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:54:06,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:54:06,345 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:54:06,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 22:54:06,787 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-12 22:54:06,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:54:06,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-12 22:54:06,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:54:07,226 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:54:07,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:54:10,068 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:54:10,068 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:54:10,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1056447021] [2021-11-12 22:54:10,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1056447021] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:54:10,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1359584679] [2021-11-12 22:54:10,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 22:54:10,069 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:54:10,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:54:10,073 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:54:10,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-12 22:54:11,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-12 22:54:11,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:54:11,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-12 22:54:11,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:54:11,517 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:54:11,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:54:12,346 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:54:12,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1359584679] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:54:12,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933396822] [2021-11-12 22:54:12,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 22:54:12,347 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:54:12,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:54:12,348 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:54:12,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-12 22:54:32,586 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-12 22:54:32,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:54:32,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-12 22:54:32,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:54:32,753 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:54:32,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:54:33,569 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:54:33,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933396822] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:54:33,570 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 22:54:33,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18, 18, 18, 18] total 34 [2021-11-12 22:54:33,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139274454] [2021-11-12 22:54:33,571 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 22:54:33,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-12 22:54:33,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:54:33,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-12 22:54:33,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=814, Unknown=0, NotChecked=0, Total=1122 [2021-11-12 22:54:33,574 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) [2021-11-12 22:54:45,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:54:45,692 INFO L93 Difference]: Finished difference Result 92 states and 115 transitions. [2021-11-12 22:54:45,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-12 22:54:45,696 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 [2021-11-12 22:54:45,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:54:45,698 INFO L225 Difference]: With dead ends: 92 [2021-11-12 22:54:45,698 INFO L226 Difference]: Without dead ends: 66 [2021-11-12 22:54:45,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=722, Invalid=1728, Unknown=0, NotChecked=0, Total=2450 [2021-11-12 22:54:45,702 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 162 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1196.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.24ms SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1326.68ms IncrementalHoareTripleChecker+Time [2021-11-12 22:54:45,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 566 Invalid, 406 Unknown, 0 Unchecked, 7.24ms Time], IncrementalHoareTripleChecker [149 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 1326.68ms Time] [2021-11-12 22:54:45,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-11-12 22:54:45,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-11-12 22:54:45,714 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) [2021-11-12 22:54:45,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2021-11-12 22:54:45,716 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 40 [2021-11-12 22:54:45,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:54:45,717 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 71 transitions. [2021-11-12 22:54:45,717 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) [2021-11-12 22:54:45,718 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 71 transitions. [2021-11-12 22:54:45,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-12 22:54:45,720 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:54:45,720 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] [2021-11-12 22:54:45,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-11-12 22:54:45,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-12 22:54:46,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 22:54:46,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:54:46,342 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:54:46,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:54:46,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1376472918, now seen corresponding path program 4 times [2021-11-12 22:54:46,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:54:46,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1225612928] [2021-11-12 22:54:46,344 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 22:54:46,344 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:54:46,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:54:46,346 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:54:46,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 22:54:46,676 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-12 22:54:46,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:54:46,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-12 22:54:46,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:54:46,761 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 [2021-11-12 22:54:46,856 INFO L354 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size [2021-11-12 22:54:46,857 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 [2021-11-12 22:54:47,003 INFO L354 Elim1Store]: treesize reduction 58, result has 22.7 percent of original size [2021-11-12 22:54:47,004 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 [2021-11-12 22:54:47,270 INFO L354 Elim1Store]: treesize reduction 113, result has 18.7 percent of original size [2021-11-12 22:54:47,270 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 44 treesize of output 49 [2021-11-12 22:54:47,632 INFO L354 Elim1Store]: treesize reduction 168, result has 17.2 percent of original size [2021-11-12 22:54:47,632 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 [2021-11-12 22:54:48,085 INFO L354 Elim1Store]: treesize reduction 251, result has 14.9 percent of original size [2021-11-12 22:54:48,085 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 [2021-11-12 22:54:48,586 INFO L354 Elim1Store]: treesize reduction 346, result has 13.5 percent of original size [2021-11-12 22:54:48,586 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 75 treesize of output 89 [2021-11-12 22:54:49,297 INFO L354 Elim1Store]: treesize reduction 423, result has 12.8 percent of original size [2021-11-12 22:54:49,298 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 [2021-11-12 22:54:50,112 INFO L354 Elim1Store]: treesize reduction 548, result has 11.5 percent of original size [2021-11-12 22:54:50,112 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 [2021-11-12 22:54:51,193 INFO L354 Elim1Store]: treesize reduction 653, result has 10.9 percent of original size [2021-11-12 22:54:51,193 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 [2021-11-12 22:54:52,480 INFO L354 Elim1Store]: treesize reduction 786, result has 10.2 percent of original size [2021-11-12 22:54:52,481 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 [2021-11-12 22:54:53,875 INFO L354 Elim1Store]: treesize reduction 953, result has 9.3 percent of original size [2021-11-12 22:54:53,875 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 124 treesize of output 153 [2021-11-12 22:54:55,769 INFO L354 Elim1Store]: treesize reduction 1088, result has 9.0 percent of original size [2021-11-12 22:54:55,770 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 [2021-11-12 22:54:57,619 INFO L354 Elim1Store]: treesize reduction 1283, result has 8.3 percent of original size [2021-11-12 22:54:57,619 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 144 treesize of output 179 [2021-11-12 22:54:59,824 INFO L354 Elim1Store]: treesize reduction 1482, result has 7.8 percent of original size [2021-11-12 22:54:59,825 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 155 treesize of output 193 [2021-11-12 22:55:02,623 INFO L354 Elim1Store]: treesize reduction 1631, result has 7.6 percent of original size [2021-11-12 22:55:02,623 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 [2021-11-12 22:55:11,713 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:55:11,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:57:25,348 WARN L227 SmtUtils]: Spent 2.20m 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) [2021-11-12 22:58:15,792 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 [2021-11-12 22:58:15,804 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 1277937 treesize of output 1277935 [2021-11-12 22:58:41,112 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 120 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:58:41,112 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:58:41,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1225612928] [2021-11-12 22:58:41,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1225612928] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:58:41,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1046151650] [2021-11-12 22:58:41,113 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 22:58:41,113 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:58:41,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:58:41,129 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:58:41,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-12 22:58:41,678 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-12 22:58:41,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:58:41,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 51 conjunts are in the unsatisfiable core [2021-11-12 22:58:41,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:58:43,944 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 [2021-11-12 22:58:43,989 INFO L354 Elim1Store]: treesize reduction 33, result has 23.3 percent of original size [2021-11-12 22:58:43,989 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 27 treesize of output 26 [2021-11-12 22:58:44,101 INFO L354 Elim1Store]: treesize reduction 58, result has 22.7 percent of original size [2021-11-12 22:58:44,101 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 [2021-11-12 22:58:44,286 INFO L354 Elim1Store]: treesize reduction 107, result has 19.5 percent of original size [2021-11-12 22:58:44,286 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 [2021-11-12 22:58:44,551 INFO L354 Elim1Store]: treesize reduction 182, result has 16.5 percent of original size [2021-11-12 22:58:44,552 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 55 treesize of output 63 [2021-11-12 22:58:44,885 INFO L354 Elim1Store]: treesize reduction 241, result has 15.4 percent of original size [2021-11-12 22:58:44,885 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 [2021-11-12 22:58:45,413 INFO L354 Elim1Store]: treesize reduction 346, result has 13.5 percent of original size [2021-11-12 22:58:45,414 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 75 treesize of output 89 [2021-11-12 22:58:46,022 INFO L354 Elim1Store]: treesize reduction 423, result has 12.8 percent of original size [2021-11-12 22:58:46,023 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 [2021-11-12 22:58:46,729 INFO L354 Elim1Store]: treesize reduction 532, result has 11.8 percent of original size [2021-11-12 22:58:46,730 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 [2021-11-12 22:58:47,865 INFO L354 Elim1Store]: treesize reduction 682, result has 10.6 percent of original size [2021-11-12 22:58:47,866 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 105 treesize of output 128 [2021-11-12 22:58:48,976 INFO L354 Elim1Store]: treesize reduction 806, result has 9.9 percent of original size [2021-11-12 22:58:48,976 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 [2021-11-12 22:58:50,392 INFO L354 Elim1Store]: treesize reduction 953, result has 9.3 percent of original size [2021-11-12 22:58:50,393 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 124 treesize of output 153 [2021-11-12 22:58:51,871 INFO L354 Elim1Store]: treesize reduction 1126, result has 8.8 percent of original size [2021-11-12 22:58:51,871 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 135 treesize of output 167 [2021-11-12 22:58:54,045 INFO L354 Elim1Store]: treesize reduction 1283, result has 8.3 percent of original size [2021-11-12 22:58:54,046 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 144 treesize of output 179 [2021-11-12 22:58:55,915 INFO L354 Elim1Store]: treesize reduction 1438, result has 8.0 percent of original size [2021-11-12 22:58:55,916 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 [2021-11-12 22:58:58,771 INFO L354 Elim1Store]: treesize reduction 1631, result has 7.6 percent of original size [2021-11-12 22:58:58,771 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 [2021-11-12 22:59:08,207 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:59:08,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:01:21,809 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) [2021-11-12 23:01:22,198 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 [2021-11-12 23:01:22,706 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 [2021-11-12 23:01:22,719 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 1310701 treesize of output 1310699 [2021-11-12 23:01:44,018 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 120 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:01:44,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1046151650] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:01:44,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426833606] [2021-11-12 23:01:44,018 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-12 23:01:44,018 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:01:44,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:01:44,023 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:01:44,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a276c608-4333-4d6c-9ab1-c4efaaab013b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-12 23:01:44,200 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-12 23:01:44,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:01:44,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 60 conjunts are in the unsatisfiable core [2021-11-12 23:01:44,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:01:44,253 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 [2021-11-12 23:01:44,303 INFO L354 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size [2021-11-12 23:01:44,303 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 [2021-11-12 23:01:44,794 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-12 23:01:44,795 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 [2021-11-12 23:01:45,595 INFO L354 Elim1Store]: treesize reduction 118, result has 18.6 percent of original size [2021-11-12 23:01:45,596 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 [2021-11-12 23:01:46,500 INFO L354 Elim1Store]: treesize reduction 188, result has 16.4 percent of original size [2021-11-12 23:01:46,501 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 56 treesize of output 64 [2021-11-12 23:01:47,561 INFO L354 Elim1Store]: treesize reduction 272, result has 14.7 percent of original size [2021-11-12 23:01:47,562 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 67 treesize of output 78 [2021-11-12 23:01:48,771 INFO L354 Elim1Store]: treesize reduction 326, result has 14.0 percent of original size [2021-11-12 23:01:48,772 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 [2021-11-12 23:01:50,038 INFO L354 Elim1Store]: treesize reduction 437, result has 12.4 percent of original size [2021-11-12 23:01:50,038 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 84 treesize of output 101 [2021-11-12 23:01:51,344 INFO L354 Elim1Store]: treesize reduction 558, result has 11.4 percent of original size [2021-11-12 23:01:51,344 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 95 treesize of output 115 [2021-11-12 23:01:53,222 INFO L354 Elim1Store]: treesize reduction 653, result has 10.9 percent of original size [2021-11-12 23:01:53,222 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 [2021-11-12 23:01:55,200 INFO L354 Elim1Store]: treesize reduction 806, result has 9.9 percent of original size [2021-11-12 23:01:55,201 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 [2021-11-12 23:01:57,916 INFO L354 Elim1Store]: treesize reduction 931, result has 9.5 percent of original size [2021-11-12 23:01:57,916 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 [2021-11-12 23:02:00,434 INFO L354 Elim1Store]: treesize reduction 1088, result has 9.0 percent of original size [2021-11-12 23:02:00,434 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 [2021-11-12 23:02:03,398 INFO L354 Elim1Store]: treesize reduction 1257, result has 8.4 percent of original size [2021-11-12 23:02:03,399 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 [2021-11-12 23:02:06,628 INFO L354 Elim1Store]: treesize reduction 1438, result has 8.0 percent of original size [2021-11-12 23:02:06,628 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 [2021-11-12 23:02:10,588 INFO L354 Elim1Store]: treesize reduction 1631, result has 7.6 percent of original size [2021-11-12 23:02:10,589 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 [2021-11-12 23:02:16,850 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:02:16,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:07:03,342 WARN L227 SmtUtils]: Spent 4.77m on a formula simplification. DAG size of input: 165 DAG size of output: 158 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-12 23:07:18,543 WARN L227 SmtUtils]: Spent 11.49s on a formula simplification. DAG size of input: 71 DAG size of output: 70 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-12 23:07:24,315 WARN L227 SmtUtils]: Spent 5.77s on a formula simplification that was a NOOP. DAG size: 70 (called from [L 268] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-12 23:07:24,327 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 105 treesize of output 103