./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI --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 71774aeec0d0f8840a1b18b633767b26c38c9eb9d26569d28cdf01c44c9881ac --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 01:40:59,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:40:59,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:40:59,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:40:59,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:40:59,765 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:40:59,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:40:59,774 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:40:59,776 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:40:59,781 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:40:59,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:40:59,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:40:59,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:40:59,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:40:59,789 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:40:59,791 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:40:59,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:40:59,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:40:59,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:40:59,804 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:40:59,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:40:59,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:40:59,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:40:59,812 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:40:59,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:40:59,821 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:40:59,821 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:40:59,823 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:40:59,823 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:40:59,824 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:40:59,825 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:40:59,826 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:40:59,828 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:40:59,829 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:40:59,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:40:59,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:40:59,832 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:40:59,833 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:40:59,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:40:59,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:40:59,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:40:59,835 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 01:40:59,875 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:40:59,875 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:40:59,876 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:40:59,876 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:40:59,877 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:40:59,877 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:40:59,877 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:40:59,878 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:40:59,878 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:40:59,878 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:40:59,879 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:40:59,879 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:40:59,880 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:40:59,880 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:40:59,880 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:40:59,880 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:40:59,880 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:40:59,881 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:40:59,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:40:59,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:40:59,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:40:59,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:40:59,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:40:59,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:40:59,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:40:59,883 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:40:59,883 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:40:59,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:40:59,884 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:40:59,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:40:59,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:40:59,884 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:40:59,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:40:59,885 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:40:59,885 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:40:59,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:40:59,885 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:40:59,886 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:40:59,886 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71774aeec0d0f8840a1b18b633767b26c38c9eb9d26569d28cdf01c44c9881ac [2022-11-03 01:41:00,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:41:00,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:41:00,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:41:00,152 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:41:00,153 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:41:00,155 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i [2022-11-03 01:41:00,219 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/data/663189b4b/8b9e11c690754f479348dbc282d02207/FLAGfdc87b959 [2022-11-03 01:41:01,034 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:41:01,034 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i [2022-11-03 01:41:01,073 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/data/663189b4b/8b9e11c690754f479348dbc282d02207/FLAGfdc87b959 [2022-11-03 01:41:01,111 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/data/663189b4b/8b9e11c690754f479348dbc282d02207 [2022-11-03 01:41:01,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:41:01,115 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:41:01,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:41:01,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:41:01,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:41:01,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:41:01" (1/1) ... [2022-11-03 01:41:01,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70623bb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:01, skipping insertion in model container [2022-11-03 01:41:01,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:41:01" (1/1) ... [2022-11-03 01:41:01,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:41:01,235 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:41:01,523 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4496,4509] [2022-11-03 01:41:01,529 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4556,4569] [2022-11-03 01:41:02,458 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:02,459 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:02,460 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:02,461 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:02,462 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:02,479 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:02,482 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:02,486 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:02,487 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:02,489 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:02,490 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:02,491 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:02,491 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:02,898 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-03 01:41:02,900 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-03 01:41:02,901 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-03 01:41:02,902 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-03 01:41:02,904 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-03 01:41:02,904 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-03 01:41:02,905 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-03 01:41:02,906 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-03 01:41:02,907 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-03 01:41:02,908 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-03 01:41:03,085 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-03 01:41:03,114 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,122 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,207 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,209 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,209 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,209 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,210 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,210 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,211 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,213 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,213 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,214 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,214 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,214 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,215 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,218 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,219 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,219 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,220 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,236 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,238 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,250 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,251 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,252 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,284 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:41:03,331 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:41:03,355 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4496,4509] [2022-11-03 01:41:03,358 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4556,4569] [2022-11-03 01:41:03,400 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,400 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,401 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,401 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,402 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,408 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,409 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,410 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,410 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,411 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,412 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,412 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,413 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,474 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-03 01:41:03,475 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-03 01:41:03,476 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-03 01:41:03,479 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-03 01:41:03,480 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-03 01:41:03,480 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-03 01:41:03,481 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-03 01:41:03,482 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-03 01:41:03,482 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-03 01:41:03,483 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-03 01:41:03,536 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-03 01:41:03,559 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,564 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,591 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,592 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,593 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,593 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,593 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,594 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,594 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,595 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,595 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,595 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,596 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,596 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,596 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,597 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,598 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,598 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,599 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,601 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,602 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,608 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,609 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,609 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:41:03,617 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:41:03,866 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:41:03,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:03 WrapperNode [2022-11-03 01:41:03,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:41:03,869 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:41:03,869 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:41:03,870 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:41:03,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:03" (1/1) ... [2022-11-03 01:41:03,976 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:03" (1/1) ... [2022-11-03 01:41:04,078 INFO L138 Inliner]: procedures = 697, calls = 1918, calls flagged for inlining = 60, calls inlined = 15, statements flattened = 1033 [2022-11-03 01:41:04,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:41:04,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:41:04,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:41:04,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:41:04,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:03" (1/1) ... [2022-11-03 01:41:04,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:03" (1/1) ... [2022-11-03 01:41:04,109 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:03" (1/1) ... [2022-11-03 01:41:04,109 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:03" (1/1) ... [2022-11-03 01:41:04,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:03" (1/1) ... [2022-11-03 01:41:04,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:03" (1/1) ... [2022-11-03 01:41:04,196 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:03" (1/1) ... [2022-11-03 01:41:04,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:03" (1/1) ... [2022-11-03 01:41:04,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:41:04,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:41:04,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:41:04,232 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:41:04,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:03" (1/1) ... [2022-11-03 01:41:04,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:41:04,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:41:04,282 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:41:04,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:41:04,324 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2022-11-03 01:41:04,325 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2022-11-03 01:41:04,325 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-11-03 01:41:04,325 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-11-03 01:41:04,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:41:04,326 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-03 01:41:04,326 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-03 01:41:04,326 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-03 01:41:04,326 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-03 01:41:04,326 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-03 01:41:04,326 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-03 01:41:04,327 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2022-11-03 01:41:04,328 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2022-11-03 01:41:04,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 01:41:04,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:41:04,332 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-03 01:41:04,332 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-03 01:41:04,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-03 01:41:04,333 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-03 01:41:04,334 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_node [2022-11-03 01:41:04,334 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_node [2022-11-03 01:41:04,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:41:04,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:41:04,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 01:41:04,335 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2022-11-03 01:41:04,335 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2022-11-03 01:41:04,335 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-03 01:41:04,335 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-03 01:41:04,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:41:04,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:41:04,335 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-03 01:41:04,335 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-03 01:41:04,336 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-03 01:41:04,336 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-03 01:41:04,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 01:41:04,336 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-03 01:41:04,336 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-03 01:41:04,336 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-11-03 01:41:04,336 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-11-03 01:41:04,336 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-11-03 01:41:04,336 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-11-03 01:41:04,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 01:41:04,336 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 01:41:04,337 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 01:41:04,337 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 01:41:04,337 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-03 01:41:04,337 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-03 01:41:04,337 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2022-11-03 01:41:04,337 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2022-11-03 01:41:04,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:41:04,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 01:41:04,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 01:41:04,337 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2022-11-03 01:41:04,338 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2022-11-03 01:41:04,338 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-03 01:41:04,338 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-03 01:41:04,338 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-03 01:41:04,338 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-03 01:41:04,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:41:04,338 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-03 01:41:04,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-03 01:41:04,338 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2022-11-03 01:41:04,339 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2022-11-03 01:41:04,339 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 01:41:04,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 01:41:04,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:41:04,339 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at [2022-11-03 01:41:04,339 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at [2022-11-03 01:41:04,798 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:41:04,801 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:41:07,525 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:41:07,928 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:41:07,928 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-03 01:41:07,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:41:07 BoogieIcfgContainer [2022-11-03 01:41:07,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:41:07,936 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:41:07,936 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:41:07,940 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:41:07,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:41:01" (1/3) ... [2022-11-03 01:41:07,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cbd0fe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:41:07, skipping insertion in model container [2022-11-03 01:41:07,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:03" (2/3) ... [2022-11-03 01:41:07,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cbd0fe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:41:07, skipping insertion in model container [2022-11-03 01:41:07,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:41:07" (3/3) ... [2022-11-03 01:41:07,944 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_pop_harness.i [2022-11-03 01:41:07,965 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:41:07,965 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-03 01:41:08,069 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:41:08,080 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@633b8143, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:41:08,080 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-03 01:41:08,087 INFO L276 IsEmpty]: Start isEmpty. Operand has 377 states, 192 states have (on average 1.2083333333333333) internal successors, (232), 195 states have internal predecessors, (232), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) [2022-11-03 01:41:08,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-03 01:41:08,107 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:41:08,108 INFO L195 NwaCegarLoop]: trace histogram [9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:41:08,108 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:41:08,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:41:08,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1860970999, now seen corresponding path program 1 times [2022-11-03 01:41:08,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:41:08,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311604478] [2022-11-03 01:41:08,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:41:08,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:41:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:41:09,371 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 01:41:09,372 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:41:09,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311604478] [2022-11-03 01:41:09,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311604478] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:41:09,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478379688] [2022-11-03 01:41:09,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:41:09,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:41:09,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:41:09,381 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:41:09,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:41:10,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:41:10,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 2416 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 01:41:10,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:41:10,228 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-03 01:41:10,229 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:41:10,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478379688] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:41:10,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:41:10,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-03 01:41:10,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332035021] [2022-11-03 01:41:10,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:41:10,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:41:10,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:41:10,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:41:10,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:41:10,269 INFO L87 Difference]: Start difference. First operand has 377 states, 192 states have (on average 1.2083333333333333) internal successors, (232), 195 states have internal predecessors, (232), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-03 01:41:12,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:41:13,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:41:13,753 INFO L93 Difference]: Finished difference Result 725 states and 1115 transitions. [2022-11-03 01:41:13,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:41:13,756 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 101 [2022-11-03 01:41:13,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:41:13,770 INFO L225 Difference]: With dead ends: 725 [2022-11-03 01:41:13,770 INFO L226 Difference]: Without dead ends: 376 [2022-11-03 01:41:13,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:41:13,782 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 40 mSDsluCounter, 1435 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:41:13,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 1777 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-03 01:41:13,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-11-03 01:41:13,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2022-11-03 01:41:13,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 191 states have (on average 1.193717277486911) internal successors, (228), 195 states have internal predecessors, (228), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (167), 154 states have call predecessors, (167), 154 states have call successors, (167) [2022-11-03 01:41:13,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 551 transitions. [2022-11-03 01:41:13,873 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 551 transitions. Word has length 101 [2022-11-03 01:41:13,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:41:13,874 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 551 transitions. [2022-11-03 01:41:13,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-03 01:41:13,875 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 551 transitions. [2022-11-03 01:41:13,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 01:41:13,879 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:41:13,879 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:41:13,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 01:41:14,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-03 01:41:14,093 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:41:14,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:41:14,094 INFO L85 PathProgramCache]: Analyzing trace with hash 2046021411, now seen corresponding path program 1 times [2022-11-03 01:41:14,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:41:14,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057702611] [2022-11-03 01:41:14,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:41:14,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:41:14,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:41:14,808 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-03 01:41:14,809 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:41:14,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057702611] [2022-11-03 01:41:14,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057702611] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:41:14,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138789703] [2022-11-03 01:41:14,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:41:14,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:41:14,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:41:14,812 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:41:14,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 01:41:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:41:15,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 2466 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 01:41:15,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:41:15,600 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-03 01:41:15,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:41:15,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138789703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:41:15,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:41:15,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-11-03 01:41:15,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780921649] [2022-11-03 01:41:15,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:41:15,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:41:15,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:41:15,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:41:15,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:41:15,609 INFO L87 Difference]: Start difference. First operand 376 states and 551 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-03 01:41:20,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:41:22,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:41:22,007 INFO L93 Difference]: Finished difference Result 735 states and 1109 transitions. [2022-11-03 01:41:22,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:41:22,008 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 109 [2022-11-03 01:41:22,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:41:22,012 INFO L225 Difference]: With dead ends: 735 [2022-11-03 01:41:22,012 INFO L226 Difference]: Without dead ends: 389 [2022-11-03 01:41:22,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:41:22,020 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 55 mSDsluCounter, 2337 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 2581 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:41:22,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 2581 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-03 01:41:22,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-11-03 01:41:22,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 387. [2022-11-03 01:41:22,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 199 states have (on average 1.1959798994974875) internal successors, (238), 203 states have internal predecessors, (238), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (186), 157 states have call predecessors, (186), 156 states have call successors, (186) [2022-11-03 01:41:22,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 582 transitions. [2022-11-03 01:41:22,093 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 582 transitions. Word has length 109 [2022-11-03 01:41:22,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:41:22,094 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 582 transitions. [2022-11-03 01:41:22,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-03 01:41:22,094 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 582 transitions. [2022-11-03 01:41:22,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-03 01:41:22,098 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:41:22,098 INFO L195 NwaCegarLoop]: trace histogram [9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:41:22,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 01:41:22,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:41:22,314 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:41:22,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:41:22,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1869528835, now seen corresponding path program 1 times [2022-11-03 01:41:22,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:41:22,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873732658] [2022-11-03 01:41:22,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:41:22,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:41:22,419 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 01:41:22,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [418665119] [2022-11-03 01:41:22,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:41:22,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:41:22,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:41:22,422 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:41:22,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 01:41:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:41:23,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 2598 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 01:41:23,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:41:23,217 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-03 01:41:23,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:41:23,218 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:41:23,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873732658] [2022-11-03 01:41:23,218 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 01:41:23,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418665119] [2022-11-03 01:41:23,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418665119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:41:23,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:41:23,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:41:23,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655944388] [2022-11-03 01:41:23,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:41:23,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:41:23,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:41:23,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:41:23,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:41:23,221 INFO L87 Difference]: Start difference. First operand 387 states and 582 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2022-11-03 01:41:26,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:41:26,864 INFO L93 Difference]: Finished difference Result 752 states and 1170 transitions. [2022-11-03 01:41:26,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:41:26,864 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 118 [2022-11-03 01:41:26,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:41:26,868 INFO L225 Difference]: With dead ends: 752 [2022-11-03 01:41:26,869 INFO L226 Difference]: Without dead ends: 395 [2022-11-03 01:41:26,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:41:26,872 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 51 mSDsluCounter, 1900 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:41:26,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 2200 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-03 01:41:26,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-11-03 01:41:26,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 387. [2022-11-03 01:41:26,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 199 states have (on average 1.1959798994974875) internal successors, (238), 203 states have internal predecessors, (238), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (186), 157 states have call predecessors, (186), 156 states have call successors, (186) [2022-11-03 01:41:26,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 582 transitions. [2022-11-03 01:41:26,903 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 582 transitions. Word has length 118 [2022-11-03 01:41:26,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:41:26,903 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 582 transitions. [2022-11-03 01:41:26,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2022-11-03 01:41:26,904 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 582 transitions. [2022-11-03 01:41:26,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-03 01:41:26,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:41:26,908 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:41:26,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 01:41:27,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:41:27,123 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:41:27,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:41:27,123 INFO L85 PathProgramCache]: Analyzing trace with hash 2010446515, now seen corresponding path program 1 times [2022-11-03 01:41:27,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:41:27,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977383083] [2022-11-03 01:41:27,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:41:27,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:41:27,234 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 01:41:27,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [817720197] [2022-11-03 01:41:27,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:41:27,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:41:27,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:41:27,237 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:41:27,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 01:41:28,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:41:28,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 2652 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 01:41:28,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:41:28,181 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-03 01:41:28,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:41:28,181 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:41:28,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977383083] [2022-11-03 01:41:28,182 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 01:41:28,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817720197] [2022-11-03 01:41:28,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817720197] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:41:28,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:41:28,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:41:28,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987810818] [2022-11-03 01:41:28,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:41:28,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:41:28,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:41:28,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:41:28,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:41:28,186 INFO L87 Difference]: Start difference. First operand 387 states and 582 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2022-11-03 01:41:31,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:41:35,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:41:36,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:41:36,602 INFO L93 Difference]: Finished difference Result 754 states and 1162 transitions. [2022-11-03 01:41:36,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:41:36,603 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) Word has length 126 [2022-11-03 01:41:36,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:41:36,606 INFO L225 Difference]: With dead ends: 754 [2022-11-03 01:41:36,607 INFO L226 Difference]: Without dead ends: 397 [2022-11-03 01:41:36,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:41:36,610 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 74 mSDsluCounter, 2764 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 2969 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:41:36,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 2969 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2022-11-03 01:41:36,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-11-03 01:41:36,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 387. [2022-11-03 01:41:36,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 199 states have (on average 1.1959798994974875) internal successors, (238), 203 states have internal predecessors, (238), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (186), 157 states have call predecessors, (186), 156 states have call successors, (186) [2022-11-03 01:41:36,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 582 transitions. [2022-11-03 01:41:36,636 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 582 transitions. Word has length 126 [2022-11-03 01:41:36,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:41:36,636 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 582 transitions. [2022-11-03 01:41:36,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2022-11-03 01:41:36,637 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 582 transitions. [2022-11-03 01:41:36,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-03 01:41:36,639 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:41:36,639 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:41:36,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 01:41:36,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:41:36,865 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:41:36,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:41:36,865 INFO L85 PathProgramCache]: Analyzing trace with hash -125786803, now seen corresponding path program 2 times [2022-11-03 01:41:36,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:41:36,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991168564] [2022-11-03 01:41:36,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:41:36,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:41:36,979 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 01:41:36,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [512455960] [2022-11-03 01:41:36,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 01:41:36,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:41:36,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:41:36,981 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:41:37,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 01:41:37,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-03 01:41:37,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:41:37,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 1885 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 01:41:37,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:41:37,794 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-11-03 01:41:37,794 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:41:37,795 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:41:37,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991168564] [2022-11-03 01:41:37,795 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 01:41:37,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512455960] [2022-11-03 01:41:37,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512455960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:41:37,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:41:37,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:41:37,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942970847] [2022-11-03 01:41:37,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:41:37,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:41:37,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:41:37,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:41:37,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:41:37,798 INFO L87 Difference]: Start difference. First operand 387 states and 582 transitions. Second operand has 5 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-03 01:41:41,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:41:42,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:41:42,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:41:42,679 INFO L93 Difference]: Finished difference Result 712 states and 1102 transitions. [2022-11-03 01:41:42,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:41:42,680 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 135 [2022-11-03 01:41:42,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:41:42,684 INFO L225 Difference]: With dead ends: 712 [2022-11-03 01:41:42,684 INFO L226 Difference]: Without dead ends: 387 [2022-11-03 01:41:42,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:41:42,688 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 0 mSDsluCounter, 1445 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1772 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:41:42,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1772 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-03 01:41:42,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-11-03 01:41:42,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2022-11-03 01:41:42,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 199 states have (on average 1.1959798994974875) internal successors, (238), 203 states have internal predecessors, (238), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (185), 157 states have call predecessors, (185), 156 states have call successors, (185) [2022-11-03 01:41:42,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 581 transitions. [2022-11-03 01:41:42,711 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 581 transitions. Word has length 135 [2022-11-03 01:41:42,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:41:42,711 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 581 transitions. [2022-11-03 01:41:42,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-03 01:41:42,712 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 581 transitions. [2022-11-03 01:41:42,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-03 01:41:42,713 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:41:42,714 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:41:42,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 01:41:42,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:41:42,941 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:41:42,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:41:42,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1818901227, now seen corresponding path program 3 times [2022-11-03 01:41:42,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:41:42,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967027272] [2022-11-03 01:41:42,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:41:42,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:41:43,042 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 01:41:43,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [140258904] [2022-11-03 01:41:43,043 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 01:41:43,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:41:43,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:41:43,044 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:41:43,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 01:41:43,559 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 01:41:43,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:41:43,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-03 01:41:43,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:41:43,791 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-03 01:41:43,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:41:44,210 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-03 01:41:44,210 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:41:44,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967027272] [2022-11-03 01:41:44,211 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 01:41:44,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140258904] [2022-11-03 01:41:44,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140258904] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:41:44,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [65511907] [2022-11-03 01:41:44,234 INFO L159 IcfgInterpreter]: Started Sifa with 83 locations of interest [2022-11-03 01:41:44,235 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:41:44,239 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:41:44,245 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:41:44,245 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:41:47,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:41:47,862 INFO L244 Elim1Store]: Index analysis took 488 ms [2022-11-03 01:42:11,411 WARN L234 SmtUtils]: Spent 23.46s on a formula simplification. DAG size of input: 1767 DAG size of output: 1175 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 01:42:11,418 INFO L356 Elim1Store]: treesize reduction 1968, result has 47.2 percent of original size [2022-11-03 01:42:11,423 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 197 select indices, 197 select index equivalence classes, 19308 disjoint index pairs (out of 19306 index pairs), introduced 197 new quantified variables, introduced 196 case distinctions, treesize of input 992 treesize of output 2358 [2022-11-03 01:42:14,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:42:15,988 INFO L244 Elim1Store]: Index analysis took 1443 ms [2022-11-03 01:42:55,202 WARN L234 SmtUtils]: Spent 39.16s on a formula simplification. DAG size of input: 2161 DAG size of output: 1179 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 01:42:55,206 INFO L356 Elim1Store]: treesize reduction 3528, result has 33.3 percent of original size [2022-11-03 01:42:55,210 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 199 select indices, 199 select index equivalence classes, 19505 disjoint index pairs (out of 19701 index pairs), introduced 199 new quantified variables, introduced 392 case distinctions, treesize of input 1002 treesize of output 2377 [2022-11-03 01:44:20,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:20,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:20,764 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 29 [2022-11-03 01:44:20,770 INFO L390 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 1 [2022-11-03 01:44:20,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:20,778 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 43 [2022-11-03 01:44:20,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:20,786 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 43 [2022-11-03 01:44:24,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:24,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:24,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:24,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:24,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:24,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:25,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:25,052 INFO L244 Elim1Store]: Index analysis took 155 ms [2022-11-03 01:44:25,092 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 193 select indices, 193 select index equivalence classes, 16855 disjoint index pairs (out of 18528 index pairs), introduced 193 new quantified variables, introduced 0 case distinctions, treesize of input 1736 treesize of output 580 [2022-11-03 01:44:25,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:25,792 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 199 select indices, 199 select index equivalence classes, 19701 disjoint index pairs (out of 19701 index pairs), introduced 199 new quantified variables, introduced 0 case distinctions, treesize of input 996 treesize of output 598 [2022-11-03 01:44:26,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,299 INFO L244 Elim1Store]: Index analysis took 125 ms [2022-11-03 01:44:26,304 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 57 select indices, 57 select index equivalence classes, 1055 disjoint index pairs (out of 1596 index pairs), introduced 57 new quantified variables, introduced 0 case distinctions, treesize of input 714 treesize of output 362 [2022-11-03 01:44:26,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:26,733 INFO L244 Elim1Store]: Index analysis took 101 ms [2022-11-03 01:44:26,768 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 198 select indices, 198 select index equivalence classes, 19504 disjoint index pairs (out of 19503 index pairs), introduced 198 new quantified variables, introduced 0 case distinctions, treesize of input 991 treesize of output 595 [2022-11-03 01:44:27,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:27,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:27,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:27,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:27,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:27,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:27,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:27,495 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 193 select indices, 193 select index equivalence classes, 16855 disjoint index pairs (out of 18528 index pairs), introduced 193 new quantified variables, introduced 0 case distinctions, treesize of input 1736 treesize of output 580 [2022-11-03 01:44:35,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:35,179 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 199 select indices, 199 select index equivalence classes, 19701 disjoint index pairs (out of 19701 index pairs), introduced 199 new quantified variables, introduced 0 case distinctions, treesize of input 996 treesize of output 598 [2022-11-03 01:44:35,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:35,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:35,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:35,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:35,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:35,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:35,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:35,794 INFO L244 Elim1Store]: Index analysis took 123 ms [2022-11-03 01:44:35,822 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 193 select indices, 193 select index equivalence classes, 16855 disjoint index pairs (out of 18528 index pairs), introduced 193 new quantified variables, introduced 0 case distinctions, treesize of input 1736 treesize of output 580 [2022-11-03 01:44:36,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,421 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 198 select indices, 198 select index equivalence classes, 19504 disjoint index pairs (out of 19503 index pairs), introduced 198 new quantified variables, introduced 0 case distinctions, treesize of input 991 treesize of output 595 [2022-11-03 01:44:36,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:36,873 INFO L244 Elim1Store]: Index analysis took 109 ms [2022-11-03 01:44:36,877 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 57 select indices, 57 select index equivalence classes, 1055 disjoint index pairs (out of 1596 index pairs), introduced 57 new quantified variables, introduced 0 case distinctions, treesize of input 714 treesize of output 362 [2022-11-03 01:44:37,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:37,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:37,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:37,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:37,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:37,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:37,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:44:37,349 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 193 select indices, 193 select index equivalence classes, 16855 disjoint index pairs (out of 18528 index pairs), introduced 193 new quantified variables, introduced 0 case distinctions, treesize of input 1736 treesize of output 580 [2022-11-03 01:44:55,155 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2022-11-03 01:44:55,204 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2022-11-03 01:44:55,376 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-11-03 01:44:55,606 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2022-11-03 01:44:55,672 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2022-11-03 01:44:55,843 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-11-03 01:45:11,972 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-11-03 01:45:12,058 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2022-11-03 01:45:12,109 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2022-11-03 01:45:12,429 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-11-03 01:45:12,526 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2022-11-03 01:45:12,579 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2022-11-03 01:45:15,115 INFO L390 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 1 [2022-11-03 01:45:15,238 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 2383 treesize of output 2373 [2022-11-03 01:45:15,738 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 2387 treesize of output 2366 [2022-11-03 01:45:15,925 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 2383 treesize of output 2373 [2022-11-03 01:45:31,973 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 01:45:31,981 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 01:45:32,009 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 01:45:32,016 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 01:45:32,052 INFO L390 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 1 [2022-11-03 01:45:32,059 INFO L390 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 1 [2022-11-03 01:45:32,066 INFO L390 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 13 treesize of output 9 [2022-11-03 01:45:32,079 INFO L390 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 1 [2022-11-03 01:45:32,121 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 01:45:32,156 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:45:32,157 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 38 [2022-11-03 01:45:32,169 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 01:45:32,241 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:45:32,241 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 38 [2022-11-03 01:45:32,253 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 01:45:32,261 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 01:45:32,442 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-11-03 01:45:32,459 INFO L390 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 27 treesize of output 23 [2022-11-03 01:45:32,464 INFO L390 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 23 treesize of output 19 [2022-11-03 01:45:32,478 INFO L390 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 27 treesize of output 23 [2022-11-03 01:45:32,482 INFO L390 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 23 treesize of output 19 [2022-11-03 01:45:34,531 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 2379 treesize of output 2351 [2022-11-03 01:45:34,914 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 2347 treesize of output 2323 [2022-11-03 01:45:35,052 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 2331 treesize of output 2303 [2022-11-03 01:45:54,068 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 2379 treesize of output 2351 [2022-11-03 01:45:54,341 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 2347 treesize of output 2323 [2022-11-03 01:45:54,447 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 2331 treesize of output 2303 [2022-11-03 01:47:14,506 INFO L356 Elim1Store]: treesize reduction 84, result has 9.7 percent of original size [2022-11-03 01:47:14,506 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 198 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 227 treesize of output 236 [2022-11-03 01:47:14,838 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 243 treesize of output 235 [2022-11-03 01:47:15,439 INFO L356 Elim1Store]: treesize reduction 156, result has 10.3 percent of original size [2022-11-03 01:47:15,440 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 198 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 221 treesize of output 240 [2022-11-03 01:47:15,704 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 75 [2022-11-03 01:47:15,814 INFO L390 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 7 treesize of output 3 [2022-11-03 01:47:15,867 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 01:47:15,924 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 01:47:17,705 INFO L356 Elim1Store]: treesize reduction 84, result has 9.7 percent of original size [2022-11-03 01:47:17,705 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 198 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 227 treesize of output 236 [2022-11-03 01:47:18,072 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 243 treesize of output 235 [2022-11-03 01:47:18,265 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 68 [2022-11-03 01:47:18,490 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 93 [2022-11-03 01:47:18,659 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 90 [2022-11-03 01:47:18,742 INFO L390 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 7 treesize of output 3 [2022-11-03 01:47:19,387 INFO L356 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-03 01:47:19,388 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 198 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 237 treesize of output 233 [2022-11-03 01:47:19,779 INFO L356 Elim1Store]: treesize reduction 118, result has 13.2 percent of original size [2022-11-03 01:47:19,780 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 198 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 138 treesize of output 157 [2022-11-03 01:47:20,025 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 322 treesize of output 314 [2022-11-03 01:47:20,235 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 95 [2022-11-03 01:47:20,373 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2022-11-03 01:47:20,560 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 199 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 101 [2022-11-03 01:47:20,778 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 199 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 98 [2022-11-03 01:47:20,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-03 01:47:21,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:47:21,149 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: no need to replace index at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructReplacementForSelectCase(DerPreprocessor.java:333) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructDerEnabler(DerPreprocessor.java:187) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:144) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:353) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:122) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:627) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:606) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:528) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:332) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:119) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 01:47:21,152 INFO L158 Benchmark]: Toolchain (without parser) took 380037.16ms. Allocated memory was 136.3MB in the beginning and 497.0MB in the end (delta: 360.7MB). Free memory was 95.1MB in the beginning and 403.1MB in the end (delta: -308.0MB). Peak memory consumption was 345.6MB. Max. memory is 16.1GB. [2022-11-03 01:47:21,153 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 88.1MB. Free memory was 42.7MB in the beginning and 42.6MB in the end (delta: 50.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 01:47:21,153 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2751.09ms. Allocated memory was 136.3MB in the beginning and 176.2MB in the end (delta: 39.8MB). Free memory was 95.0MB in the beginning and 93.2MB in the end (delta: 1.9MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. [2022-11-03 01:47:21,153 INFO L158 Benchmark]: Boogie Procedure Inliner took 209.45ms. Allocated memory is still 176.2MB. Free memory was 93.2MB in the beginning and 81.5MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-03 01:47:21,153 INFO L158 Benchmark]: Boogie Preprocessor took 152.47ms. Allocated memory is still 176.2MB. Free memory was 81.5MB in the beginning and 123.7MB in the end (delta: -42.2MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. [2022-11-03 01:47:21,154 INFO L158 Benchmark]: RCFGBuilder took 3701.08ms. Allocated memory was 176.2MB in the beginning and 237.0MB in the end (delta: 60.8MB). Free memory was 123.7MB in the beginning and 123.8MB in the end (delta: -35.5kB). Peak memory consumption was 74.0MB. Max. memory is 16.1GB. [2022-11-03 01:47:21,154 INFO L158 Benchmark]: TraceAbstraction took 373215.63ms. Allocated memory was 237.0MB in the beginning and 497.0MB in the end (delta: 260.0MB). Free memory was 122.7MB in the beginning and 403.1MB in the end (delta: -280.4MB). Peak memory consumption was 271.6MB. Max. memory is 16.1GB. [2022-11-03 01:47:21,156 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 88.1MB. Free memory was 42.7MB in the beginning and 42.6MB in the end (delta: 50.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2751.09ms. Allocated memory was 136.3MB in the beginning and 176.2MB in the end (delta: 39.8MB). Free memory was 95.0MB in the beginning and 93.2MB in the end (delta: 1.9MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 209.45ms. Allocated memory is still 176.2MB. Free memory was 93.2MB in the beginning and 81.5MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 152.47ms. Allocated memory is still 176.2MB. Free memory was 81.5MB in the beginning and 123.7MB in the end (delta: -42.2MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. * RCFGBuilder took 3701.08ms. Allocated memory was 176.2MB in the beginning and 237.0MB in the end (delta: 60.8MB). Free memory was 123.7MB in the beginning and 123.8MB in the end (delta: -35.5kB). Peak memory consumption was 74.0MB. Max. memory is 16.1GB. * TraceAbstraction took 373215.63ms. Allocated memory was 237.0MB in the beginning and 497.0MB in the end (delta: 260.0MB). Free memory was 122.7MB in the beginning and 403.1MB in the end (delta: -280.4MB). Peak memory consumption was 271.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: no need to replace index de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: no need to replace index: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructReplacementForSelectCase(DerPreprocessor.java:333) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-03 01:47:21,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 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/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI --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 71774aeec0d0f8840a1b18b633767b26c38c9eb9d26569d28cdf01c44c9881ac --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 01:47:23,600 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:47:23,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:47:23,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:47:23,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:47:23,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:47:23,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:47:23,636 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:47:23,638 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:47:23,639 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:47:23,640 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:47:23,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:47:23,642 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:47:23,643 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:47:23,644 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:47:23,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:47:23,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:47:23,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:47:23,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:47:23,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:47:23,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:47:23,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:47:23,656 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:47:23,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:47:23,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:47:23,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:47:23,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:47:23,663 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:47:23,664 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:47:23,665 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:47:23,665 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:47:23,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:47:23,667 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:47:23,668 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:47:23,669 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:47:23,669 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:47:23,670 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:47:23,670 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:47:23,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:47:23,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:47:23,672 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:47:23,673 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 01:47:23,704 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:47:23,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:47:23,705 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:47:23,705 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:47:23,706 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:47:23,706 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:47:23,706 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:47:23,707 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:47:23,707 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:47:23,707 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:47:23,707 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:47:23,708 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:47:23,709 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:47:23,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:47:23,709 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:47:23,709 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:47:23,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:47:23,710 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 01:47:23,710 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 01:47:23,710 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 01:47:23,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:47:23,711 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:47:23,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:47:23,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:47:23,711 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 01:47:23,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:47:23,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:47:23,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:47:23,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:47:23,712 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:47:23,713 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 01:47:23,713 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 01:47:23,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:47:23,713 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:47:23,714 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 01:47:23,714 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_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71774aeec0d0f8840a1b18b633767b26c38c9eb9d26569d28cdf01c44c9881ac [2022-11-03 01:47:24,084 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:47:24,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:47:24,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:47:24,115 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:47:24,116 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:47:24,117 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i [2022-11-03 01:47:24,187 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/data/607601cec/38a525731f754418984eff3a4453a300/FLAG24f5571f7 [2022-11-03 01:47:25,241 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:47:25,242 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i [2022-11-03 01:47:25,279 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/data/607601cec/38a525731f754418984eff3a4453a300/FLAG24f5571f7 [2022-11-03 01:47:25,302 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/data/607601cec/38a525731f754418984eff3a4453a300 [2022-11-03 01:47:25,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:47:25,308 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:47:25,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:47:25,310 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:47:25,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:47:25,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:47:25" (1/1) ... [2022-11-03 01:47:25,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a83ce90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:25, skipping insertion in model container [2022-11-03 01:47:25,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:47:25" (1/1) ... [2022-11-03 01:47:25,325 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:47:25,468 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:47:25,778 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4496,4509] [2022-11-03 01:47:25,785 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4556,4569] [2022-11-03 01:47:26,806 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:26,808 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:26,810 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:26,811 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:26,817 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:26,836 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:26,841 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:26,845 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:26,845 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:26,857 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:26,861 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:26,863 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:26,864 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,290 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-03 01:47:27,292 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-03 01:47:27,293 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-03 01:47:27,294 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-03 01:47:27,295 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-03 01:47:27,296 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-03 01:47:27,297 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-03 01:47:27,298 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-03 01:47:27,298 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-03 01:47:27,299 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-03 01:47:27,461 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-03 01:47:27,493 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,501 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,598 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,599 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,600 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,600 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,601 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,601 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,602 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,602 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,603 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,603 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,604 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,604 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,604 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,615 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,616 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,616 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,617 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,628 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,629 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,639 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,640 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,640 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:47:27,708 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-03 01:47:27,772 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:47:27,787 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4496,4509] [2022-11-03 01:47:27,790 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4556,4569] [2022-11-03 01:47:27,863 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,864 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,864 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,865 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,865 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,871 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,872 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,873 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,873 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,875 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,875 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,876 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,876 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,910 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-03 01:47:27,911 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-03 01:47:27,912 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-03 01:47:27,913 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-03 01:47:27,914 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-03 01:47:27,914 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-03 01:47:27,915 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-03 01:47:27,915 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-03 01:47:27,916 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-03 01:47:27,916 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-03 01:47:27,938 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-03 01:47:27,953 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,958 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,989 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,990 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,990 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,990 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,991 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,991 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,992 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,992 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,993 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,993 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,994 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,994 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,994 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,995 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,996 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,996 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:27,997 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,035 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,035 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,042 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,043 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,044 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:47:28,066 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:47:28,080 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4496,4509] [2022-11-03 01:47:28,081 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4556,4569] [2022-11-03 01:47:28,114 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,115 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,115 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,116 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,116 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,122 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,122 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,123 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,124 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,125 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,125 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,126 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,126 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,158 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-03 01:47:28,158 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-03 01:47:28,159 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-03 01:47:28,160 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-03 01:47:28,161 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-03 01:47:28,161 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-03 01:47:28,162 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-03 01:47:28,163 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-03 01:47:28,163 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-03 01:47:28,164 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-03 01:47:28,186 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-03 01:47:28,232 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,237 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,263 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,266 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,267 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,267 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,267 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,268 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,268 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,269 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,269 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,269 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,270 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,270 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,271 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,271 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,273 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,274 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,278 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,281 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,281 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,290 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,292 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,294 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:47:28,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:47:28,602 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:47:28,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:28 WrapperNode [2022-11-03 01:47:28,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:47:28,604 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:47:28,604 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:47:28,604 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:47:28,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:28" (1/1) ... [2022-11-03 01:47:28,735 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:28" (1/1) ... [2022-11-03 01:47:28,836 INFO L138 Inliner]: procedures = 717, calls = 1918, calls flagged for inlining = 60, calls inlined = 15, statements flattened = 1015 [2022-11-03 01:47:28,838 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:47:28,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:47:28,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:47:28,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:47:28,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:28" (1/1) ... [2022-11-03 01:47:28,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:28" (1/1) ... [2022-11-03 01:47:28,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:28" (1/1) ... [2022-11-03 01:47:28,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:28" (1/1) ... [2022-11-03 01:47:28,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:28" (1/1) ... [2022-11-03 01:47:28,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:28" (1/1) ... [2022-11-03 01:47:28,922 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:28" (1/1) ... [2022-11-03 01:47:28,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:28" (1/1) ... [2022-11-03 01:47:28,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:47:28,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:47:28,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:47:28,944 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:47:28,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:28" (1/1) ... [2022-11-03 01:47:28,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:47:28,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:47:28,978 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:47:29,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:47:29,065 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2022-11-03 01:47:29,066 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2022-11-03 01:47:29,066 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-11-03 01:47:29,066 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-11-03 01:47:29,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:47:29,066 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-03 01:47:29,066 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-03 01:47:29,066 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-03 01:47:29,066 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-03 01:47:29,066 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-03 01:47:29,066 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-03 01:47:29,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-03 01:47:29,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-03 01:47:29,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-03 01:47:29,067 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2022-11-03 01:47:29,067 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2022-11-03 01:47:29,067 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-03 01:47:29,067 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-03 01:47:29,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-03 01:47:29,067 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-03 01:47:29,067 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_node [2022-11-03 01:47:29,067 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_node [2022-11-03 01:47:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2022-11-03 01:47:29,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2022-11-03 01:47:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:47:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:47:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 01:47:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2022-11-03 01:47:29,068 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2022-11-03 01:47:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-03 01:47:29,068 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-03 01:47:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:47:29,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:47:29,071 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-03 01:47:29,071 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-03 01:47:29,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-03 01:47:29,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-03 01:47:29,071 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-03 01:47:29,071 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-03 01:47:29,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 01:47:29,072 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-03 01:47:29,072 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-03 01:47:29,072 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-11-03 01:47:29,072 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-11-03 01:47:29,072 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-11-03 01:47:29,072 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-11-03 01:47:29,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 01:47:29,073 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 01:47:29,074 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 01:47:29,074 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 01:47:29,074 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-03 01:47:29,074 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-03 01:47:29,074 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2022-11-03 01:47:29,074 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2022-11-03 01:47:29,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:47:29,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 01:47:29,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-03 01:47:29,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 01:47:29,075 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2022-11-03 01:47:29,076 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2022-11-03 01:47:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-03 01:47:29,076 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-03 01:47:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-03 01:47:29,077 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-03 01:47:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-03 01:47:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-03 01:47:29,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-03 01:47:29,077 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2022-11-03 01:47:29,077 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2022-11-03 01:47:29,078 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at [2022-11-03 01:47:29,078 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at [2022-11-03 01:47:29,567 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:47:29,574 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:47:34,974 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:47:34,988 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:47:34,988 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-03 01:47:34,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:47:34 BoogieIcfgContainer [2022-11-03 01:47:34,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:47:34,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:47:34,994 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:47:34,996 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:47:34,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:47:25" (1/3) ... [2022-11-03 01:47:34,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29eeb27e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:47:34, skipping insertion in model container [2022-11-03 01:47:34,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:28" (2/3) ... [2022-11-03 01:47:34,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29eeb27e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:47:34, skipping insertion in model container [2022-11-03 01:47:34,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:47:34" (3/3) ... [2022-11-03 01:47:34,999 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_pop_harness.i [2022-11-03 01:47:35,018 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:47:35,018 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-03 01:47:35,082 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:47:35,121 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1569c016, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:47:35,121 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-03 01:47:35,127 INFO L276 IsEmpty]: Start isEmpty. Operand has 444 states, 259 states have (on average 1.2664092664092663) internal successors, (328), 262 states have internal predecessors, (328), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) [2022-11-03 01:47:35,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-03 01:47:35,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:35,156 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:35,157 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:47:35,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:35,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1834595556, now seen corresponding path program 1 times [2022-11-03 01:47:35,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:47:35,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [392780098] [2022-11-03 01:47:35,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:35,189 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:47:35,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:47:35,197 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:47:35,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 01:47:36,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:36,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 1627 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-03 01:47:36,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:47:36,452 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-11-03 01:47:36,453 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:47:36,453 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:47:36,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [392780098] [2022-11-03 01:47:36,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [392780098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:36,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:36,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:47:36,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590449377] [2022-11-03 01:47:36,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:36,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 01:47:36,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:47:36,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 01:47:36,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 01:47:36,492 INFO L87 Difference]: Start difference. First operand has 444 states, 259 states have (on average 1.2664092664092663) internal successors, (328), 262 states have internal predecessors, (328), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 01:47:36,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:36,606 INFO L93 Difference]: Finished difference Result 875 states and 1391 transitions. [2022-11-03 01:47:36,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 01:47:36,610 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 133 [2022-11-03 01:47:36,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:36,624 INFO L225 Difference]: With dead ends: 875 [2022-11-03 01:47:36,624 INFO L226 Difference]: Without dead ends: 437 [2022-11-03 01:47:36,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 01:47:36,638 INFO L413 NwaCegarLoop]: 629 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:36,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:47:36,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-11-03 01:47:36,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2022-11-03 01:47:36,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 253 states have (on average 1.2411067193675889) internal successors, (314), 256 states have internal predecessors, (314), 156 states have call successors, (156), 27 states have call predecessors, (156), 26 states have return successors, (154), 154 states have call predecessors, (154), 154 states have call successors, (154) [2022-11-03 01:47:36,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 624 transitions. [2022-11-03 01:47:36,729 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 624 transitions. Word has length 133 [2022-11-03 01:47:36,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:36,731 INFO L495 AbstractCegarLoop]: Abstraction has 437 states and 624 transitions. [2022-11-03 01:47:36,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 01:47:36,732 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 624 transitions. [2022-11-03 01:47:36,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-03 01:47:36,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:36,737 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:36,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-03 01:47:36,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:47:36,957 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:47:36,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:36,960 INFO L85 PathProgramCache]: Analyzing trace with hash 133133086, now seen corresponding path program 1 times [2022-11-03 01:47:36,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:47:36,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2124794865] [2022-11-03 01:47:36,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:36,968 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:47:36,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:47:36,969 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:47:36,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 01:47:38,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:38,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 1627 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:47:38,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:47:38,382 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-03 01:47:38,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:47:38,382 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:47:38,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2124794865] [2022-11-03 01:47:38,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2124794865] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:38,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:38,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:47:38,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249875927] [2022-11-03 01:47:38,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:38,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:47:38,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:47:38,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:47:38,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:47:38,386 INFO L87 Difference]: Start difference. First operand 437 states and 624 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-03 01:47:40,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:47:41,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:41,187 INFO L93 Difference]: Finished difference Result 840 states and 1217 transitions. [2022-11-03 01:47:41,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:47:41,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 133 [2022-11-03 01:47:41,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:41,194 INFO L225 Difference]: With dead ends: 840 [2022-11-03 01:47:41,194 INFO L226 Difference]: Without dead ends: 439 [2022-11-03 01:47:41,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:47:41,198 INFO L413 NwaCegarLoop]: 599 mSDtfsCounter, 35 mSDsluCounter, 1708 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 2307 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:41,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 2307 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 129 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-11-03 01:47:41,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-11-03 01:47:41,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2022-11-03 01:47:41,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 254 states have (on average 1.2401574803149606) internal successors, (315), 258 states have internal predecessors, (315), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (168), 154 states have call predecessors, (168), 154 states have call successors, (168) [2022-11-03 01:47:41,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 639 transitions. [2022-11-03 01:47:41,278 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 639 transitions. Word has length 133 [2022-11-03 01:47:41,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:41,278 INFO L495 AbstractCegarLoop]: Abstraction has 439 states and 639 transitions. [2022-11-03 01:47:41,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-03 01:47:41,279 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 639 transitions. [2022-11-03 01:47:41,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-03 01:47:41,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:41,282 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:41,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 01:47:41,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:47:41,505 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:47:41,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:41,506 INFO L85 PathProgramCache]: Analyzing trace with hash 74249020, now seen corresponding path program 1 times [2022-11-03 01:47:41,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:47:41,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [366646348] [2022-11-03 01:47:41,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:41,508 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:47:41,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:47:41,509 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:47:41,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 01:47:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:42,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 1657 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:47:42,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:47:43,045 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-03 01:47:43,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:47:43,046 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:47:43,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [366646348] [2022-11-03 01:47:43,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [366646348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:43,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:43,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:47:43,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129887818] [2022-11-03 01:47:43,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:43,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:47:43,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:47:43,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:47:43,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:47:43,048 INFO L87 Difference]: Start difference. First operand 439 states and 639 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-03 01:47:45,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:47:46,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:46,892 INFO L93 Difference]: Finished difference Result 863 states and 1290 transitions. [2022-11-03 01:47:46,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:47:46,893 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 141 [2022-11-03 01:47:46,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:46,898 INFO L225 Difference]: With dead ends: 863 [2022-11-03 01:47:46,898 INFO L226 Difference]: Without dead ends: 460 [2022-11-03 01:47:46,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:47:46,902 INFO L413 NwaCegarLoop]: 578 mSDtfsCounter, 86 mSDsluCounter, 2757 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 3335 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:46,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 3335 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 343 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2022-11-03 01:47:46,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-11-03 01:47:46,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 458. [2022-11-03 01:47:46,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 270 states have (on average 1.2481481481481482) internal successors, (337), 274 states have internal predecessors, (337), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (187), 157 states have call predecessors, (187), 156 states have call successors, (187) [2022-11-03 01:47:46,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 682 transitions. [2022-11-03 01:47:46,968 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 682 transitions. Word has length 141 [2022-11-03 01:47:46,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:46,970 INFO L495 AbstractCegarLoop]: Abstraction has 458 states and 682 transitions. [2022-11-03 01:47:46,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-03 01:47:46,970 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 682 transitions. [2022-11-03 01:47:46,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-03 01:47:46,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:46,977 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:47,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 01:47:47,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:47:47,191 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:47:47,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:47,191 INFO L85 PathProgramCache]: Analyzing trace with hash -782989412, now seen corresponding path program 1 times [2022-11-03 01:47:47,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:47:47,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [868940363] [2022-11-03 01:47:47,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:47,193 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:47:47,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:47:47,194 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:47:47,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 01:47:48,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:48,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 1769 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:47:48,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:47:48,827 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-03 01:47:48,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:47:48,828 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:47:48,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [868940363] [2022-11-03 01:47:48,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [868940363] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:48,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:48,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:47:48,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221323132] [2022-11-03 01:47:48,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:48,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:47:48,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:47:48,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:47:48,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:47:48,831 INFO L87 Difference]: Start difference. First operand 458 states and 682 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2022-11-03 01:47:51,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:47:52,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:52,453 INFO L93 Difference]: Finished difference Result 888 states and 1365 transitions. [2022-11-03 01:47:52,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:47:52,457 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 156 [2022-11-03 01:47:52,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:52,467 INFO L225 Difference]: With dead ends: 888 [2022-11-03 01:47:52,468 INFO L226 Difference]: Without dead ends: 466 [2022-11-03 01:47:52,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:47:52,474 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 58 mSDsluCounter, 2246 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 2839 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:52,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 2839 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 268 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-11-03 01:47:52,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2022-11-03 01:47:52,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 458. [2022-11-03 01:47:52,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 270 states have (on average 1.2481481481481482) internal successors, (337), 274 states have internal predecessors, (337), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (187), 157 states have call predecessors, (187), 156 states have call successors, (187) [2022-11-03 01:47:52,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 682 transitions. [2022-11-03 01:47:52,557 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 682 transitions. Word has length 156 [2022-11-03 01:47:52,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:52,559 INFO L495 AbstractCegarLoop]: Abstraction has 458 states and 682 transitions. [2022-11-03 01:47:52,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2022-11-03 01:47:52,560 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 682 transitions. [2022-11-03 01:47:52,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-03 01:47:52,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:52,563 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:52,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 01:47:52,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:47:52,781 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:47:52,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:52,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1549701389, now seen corresponding path program 1 times [2022-11-03 01:47:52,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:47:52,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [836568458] [2022-11-03 01:47:52,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:52,783 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:47:52,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:47:52,784 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:47:52,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 01:47:54,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:54,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 1817 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:47:54,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:47:54,689 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-03 01:47:54,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:47:54,689 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:47:54,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [836568458] [2022-11-03 01:47:54,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [836568458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:54,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:54,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:47:54,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499537539] [2022-11-03 01:47:54,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:54,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:47:54,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:47:54,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:47:54,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:47:54,692 INFO L87 Difference]: Start difference. First operand 458 states and 682 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2022-11-03 01:47:58,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:47:59,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:59,938 INFO L93 Difference]: Finished difference Result 910 states and 1384 transitions. [2022-11-03 01:47:59,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:47:59,939 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) Word has length 172 [2022-11-03 01:47:59,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:59,944 INFO L225 Difference]: With dead ends: 910 [2022-11-03 01:47:59,944 INFO L226 Difference]: Without dead ends: 488 [2022-11-03 01:47:59,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:47:59,948 INFO L413 NwaCegarLoop]: 578 mSDtfsCounter, 130 mSDsluCounter, 3287 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 3865 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:59,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 3865 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 587 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2022-11-03 01:47:59,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2022-11-03 01:47:59,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 470. [2022-11-03 01:47:59,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 280 states have (on average 1.2535714285714286) internal successors, (351), 284 states have internal predecessors, (351), 159 states have call successors, (159), 28 states have call predecessors, (159), 29 states have return successors, (188), 158 states have call predecessors, (188), 157 states have call successors, (188) [2022-11-03 01:47:59,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 698 transitions. [2022-11-03 01:47:59,984 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 698 transitions. Word has length 172 [2022-11-03 01:47:59,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:59,985 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 698 transitions. [2022-11-03 01:47:59,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2022-11-03 01:47:59,986 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 698 transitions. [2022-11-03 01:47:59,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-03 01:47:59,989 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:59,989 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:48:00,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 01:48:00,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:48:00,205 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:48:00,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:00,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1969354101, now seen corresponding path program 2 times [2022-11-03 01:48:00,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:48:00,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [955638286] [2022-11-03 01:48:00,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 01:48:00,209 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:48:00,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:48:00,211 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:48:00,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 01:48:02,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 01:48:02,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:48:02,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 1929 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 01:48:02,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:48:03,355 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-03 01:48:03,356 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:48:03,356 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:48:03,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [955638286] [2022-11-03 01:48:03,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [955638286] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:48:03,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:48:03,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:48:03,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473433658] [2022-11-03 01:48:03,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:48:03,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:48:03,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:48:03,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:48:03,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:48:03,360 INFO L87 Difference]: Start difference. First operand 470 states and 698 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 01:48:07,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:48:09,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:48:12,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:48:14,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:48:14,834 INFO L93 Difference]: Finished difference Result 940 states and 1458 transitions. [2022-11-03 01:48:14,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:48:14,837 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 187 [2022-11-03 01:48:14,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:48:14,841 INFO L225 Difference]: With dead ends: 940 [2022-11-03 01:48:14,842 INFO L226 Difference]: Without dead ends: 506 [2022-11-03 01:48:14,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:48:14,848 INFO L413 NwaCegarLoop]: 634 mSDtfsCounter, 21 mSDsluCounter, 2312 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2946 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:48:14,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2946 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 258 Invalid, 3 Unknown, 0 Unchecked, 10.9s Time] [2022-11-03 01:48:14,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2022-11-03 01:48:14,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 478. [2022-11-03 01:48:14,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 288 states have (on average 1.2534722222222223) internal successors, (361), 292 states have internal predecessors, (361), 159 states have call successors, (159), 28 states have call predecessors, (159), 29 states have return successors, (188), 158 states have call predecessors, (188), 157 states have call successors, (188) [2022-11-03 01:48:14,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 708 transitions. [2022-11-03 01:48:14,881 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 708 transitions. Word has length 187 [2022-11-03 01:48:14,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:48:14,882 INFO L495 AbstractCegarLoop]: Abstraction has 478 states and 708 transitions. [2022-11-03 01:48:14,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 01:48:14,883 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 708 transitions. [2022-11-03 01:48:14,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-03 01:48:14,885 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:14,885 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:48:14,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-03 01:48:15,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:48:15,102 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:48:15,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:15,102 INFO L85 PathProgramCache]: Analyzing trace with hash -402596151, now seen corresponding path program 1 times [2022-11-03 01:48:15,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:48:15,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1167096402] [2022-11-03 01:48:15,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:15,104 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:48:15,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:48:15,105 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:48:15,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 01:48:16,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:16,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 1927 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:48:16,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:48:17,726 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-03 01:48:17,726 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:48:17,726 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:48:17,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1167096402] [2022-11-03 01:48:17,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1167096402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:48:17,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:48:17,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:48:17,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74182719] [2022-11-03 01:48:17,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:48:17,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:48:17,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:48:17,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:48:17,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:48:17,729 INFO L87 Difference]: Start difference. First operand 478 states and 708 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 01:48:22,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:48:24,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:48:26,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:48:29,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:48:29,775 INFO L93 Difference]: Finished difference Result 950 states and 1468 transitions. [2022-11-03 01:48:29,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 01:48:29,777 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 187 [2022-11-03 01:48:29,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:48:29,782 INFO L225 Difference]: With dead ends: 950 [2022-11-03 01:48:29,782 INFO L226 Difference]: Without dead ends: 508 [2022-11-03 01:48:29,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:48:29,786 INFO L413 NwaCegarLoop]: 634 mSDtfsCounter, 17 mSDsluCounter, 2940 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 3574 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:48:29,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 3574 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 276 Invalid, 3 Unknown, 0 Unchecked, 11.2s Time] [2022-11-03 01:48:29,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2022-11-03 01:48:29,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 482. [2022-11-03 01:48:29,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 292 states have (on average 1.25) internal successors, (365), 296 states have internal predecessors, (365), 159 states have call successors, (159), 28 states have call predecessors, (159), 29 states have return successors, (188), 158 states have call predecessors, (188), 157 states have call successors, (188) [2022-11-03 01:48:29,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 712 transitions. [2022-11-03 01:48:29,814 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 712 transitions. Word has length 187 [2022-11-03 01:48:29,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:48:29,814 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 712 transitions. [2022-11-03 01:48:29,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 01:48:29,815 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 712 transitions. [2022-11-03 01:48:29,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-03 01:48:29,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:29,818 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:48:29,880 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-11-03 01:48:30,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:48:30,033 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:48:30,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:30,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1545098617, now seen corresponding path program 1 times [2022-11-03 01:48:30,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:48:30,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [220964011] [2022-11-03 01:48:30,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:30,035 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:48:30,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:48:30,036 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:48:30,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 01:48:31,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:31,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 1924 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 01:48:31,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:48:43,436 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_priority_queue_pop_harness_~#queue~0#1.base_BEFORE_CALL_26| (_ BitVec 64)) (|v_ULTIMATE.start_aws_priority_queue_pop_harness_~#queue~0#1.offset_BEFORE_CALL_2| (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_priority_queue_pop_harness_~#queue~0#1.base_BEFORE_CALL_26|) (bvadd (_ bv80 64) |v_ULTIMATE.start_aws_priority_queue_pop_harness_~#queue~0#1.offset_BEFORE_CALL_2|))))) (exists ((|v_ULTIMATE.start_aws_priority_queue_pop_harness_~#queue~0#1.base_BEFORE_CALL_26| (_ BitVec 64)) (|v_ULTIMATE.start_aws_priority_queue_pop_harness_~#queue~0#1.offset_BEFORE_CALL_2| (_ BitVec 64))) (not (= (_ bv0 64) (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_priority_queue_pop_harness_~#queue~0#1.base_BEFORE_CALL_26|) (bvadd (_ bv80 64) |v_ULTIMATE.start_aws_priority_queue_pop_harness_~#queue~0#1.offset_BEFORE_CALL_2|)))))) is different from true [2022-11-03 01:48:43,952 INFO L390 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 31 treesize of output 19 [2022-11-03 01:48:43,964 INFO L390 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 25 treesize of output 13 [2022-11-03 01:48:44,245 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-03 01:48:44,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:48:44,246 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:48:44,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [220964011] [2022-11-03 01:48:44,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [220964011] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:48:44,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:48:44,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 01:48:44,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046454958] [2022-11-03 01:48:44,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:48:44,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 01:48:44,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:48:44,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 01:48:44,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=4, NotChecked=18, Total=132 [2022-11-03 01:48:44,249 INFO L87 Difference]: Start difference. First operand 482 states and 712 transitions. Second operand has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 states have internal predecessors, (86), 6 states have call successors, (25), 4 states have call predecessors, (25), 5 states have return successors, (23), 6 states have call predecessors, (23), 6 states have call successors, (23) [2022-11-03 01:48:56,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:49:00,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:49:00,956 INFO L93 Difference]: Finished difference Result 962 states and 1483 transitions. [2022-11-03 01:49:00,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 01:49:00,958 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 states have internal predecessors, (86), 6 states have call successors, (25), 4 states have call predecessors, (25), 5 states have return successors, (23), 6 states have call predecessors, (23), 6 states have call successors, (23) Word has length 187 [2022-11-03 01:49:00,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:49:00,962 INFO L225 Difference]: With dead ends: 962 [2022-11-03 01:49:00,963 INFO L226 Difference]: Without dead ends: 543 [2022-11-03 01:49:00,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 175 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 19.0s TimeCoverageRelationStatistics Valid=72, Invalid=231, Unknown=7, NotChecked=32, Total=342 [2022-11-03 01:49:00,967 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 78 mSDsluCounter, 4371 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 4974 SdHoareTripleChecker+Invalid, 1622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 852 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:49:00,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 4974 Invalid, 1622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 756 Invalid, 1 Unknown, 852 Unchecked, 8.7s Time] [2022-11-03 01:49:00,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-11-03 01:49:00,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 512. [2022-11-03 01:49:00,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 315 states have (on average 1.2444444444444445) internal successors, (392), 319 states have internal predecessors, (392), 162 states have call successors, (162), 31 states have call predecessors, (162), 33 states have return successors, (207), 162 states have call predecessors, (207), 160 states have call successors, (207) [2022-11-03 01:49:01,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 761 transitions. [2022-11-03 01:49:01,001 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 761 transitions. Word has length 187 [2022-11-03 01:49:01,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:49:01,002 INFO L495 AbstractCegarLoop]: Abstraction has 512 states and 761 transitions. [2022-11-03 01:49:01,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 states have internal predecessors, (86), 6 states have call successors, (25), 4 states have call predecessors, (25), 5 states have return successors, (23), 6 states have call predecessors, (23), 6 states have call successors, (23) [2022-11-03 01:49:01,003 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 761 transitions. [2022-11-03 01:49:01,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-03 01:49:01,005 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:49:01,006 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:49:01,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 01:49:01,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:49:01,220 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:49:01,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:49:01,220 INFO L85 PathProgramCache]: Analyzing trace with hash 446482249, now seen corresponding path program 1 times [2022-11-03 01:49:01,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:49:01,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1556201554] [2022-11-03 01:49:01,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:49:01,222 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:49:01,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:49:01,223 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:49:01,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 01:49:03,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:49:03,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 1926 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:49:03,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:49:03,345 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-03 01:49:03,345 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:49:03,346 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:49:03,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1556201554] [2022-11-03 01:49:03,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1556201554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:49:03,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:49:03,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:49:03,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843501263] [2022-11-03 01:49:03,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:49:03,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:49:03,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:49:03,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:49:03,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:49:03,349 INFO L87 Difference]: Start difference. First operand 512 states and 761 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 01:49:03,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:49:03,605 INFO L93 Difference]: Finished difference Result 990 states and 1540 transitions. [2022-11-03 01:49:03,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:49:03,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 187 [2022-11-03 01:49:03,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:49:03,611 INFO L225 Difference]: With dead ends: 990 [2022-11-03 01:49:03,612 INFO L226 Difference]: Without dead ends: 532 [2022-11-03 01:49:03,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:49:03,617 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 8 mSDsluCounter, 1917 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2564 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:49:03,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2564 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:49:03,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2022-11-03 01:49:03,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 520. [2022-11-03 01:49:03,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 323 states have (on average 1.241486068111455) internal successors, (401), 327 states have internal predecessors, (401), 162 states have call successors, (162), 31 states have call predecessors, (162), 33 states have return successors, (207), 162 states have call predecessors, (207), 160 states have call successors, (207) [2022-11-03 01:49:03,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 770 transitions. [2022-11-03 01:49:03,657 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 770 transitions. Word has length 187 [2022-11-03 01:49:03,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:49:03,658 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 770 transitions. [2022-11-03 01:49:03,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 01:49:03,659 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 770 transitions. [2022-11-03 01:49:03,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-03 01:49:03,662 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:49:03,662 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:49:03,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 01:49:03,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:49:03,877 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:49:03,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:49:03,878 INFO L85 PathProgramCache]: Analyzing trace with hash 519703029, now seen corresponding path program 1 times [2022-11-03 01:49:03,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:49:03,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1316641595] [2022-11-03 01:49:03,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:49:03,881 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:49:03,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:49:03,883 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:49:03,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-03 01:49:05,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:49:06,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 1925 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 01:49:06,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:49:06,531 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-03 01:49:06,532 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:49:06,532 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:49:06,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1316641595] [2022-11-03 01:49:06,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1316641595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:49:06,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:49:06,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:49:06,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013935188] [2022-11-03 01:49:06,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:49:06,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:49:06,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:49:06,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:49:06,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:49:06,535 INFO L87 Difference]: Start difference. First operand 520 states and 770 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 01:49:08,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:49:08,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:49:08,977 INFO L93 Difference]: Finished difference Result 972 states and 1460 transitions. [2022-11-03 01:49:08,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:49:08,979 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 188 [2022-11-03 01:49:08,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:49:08,983 INFO L225 Difference]: With dead ends: 972 [2022-11-03 01:49:08,984 INFO L226 Difference]: Without dead ends: 535 [2022-11-03 01:49:08,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:49:08,987 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 7 mSDsluCounter, 3097 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3721 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:49:08,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3721 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-11-03 01:49:08,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2022-11-03 01:49:09,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 533. [2022-11-03 01:49:09,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 333 states have (on average 1.2432432432432432) internal successors, (414), 337 states have internal predecessors, (414), 164 states have call successors, (164), 31 states have call predecessors, (164), 34 states have return successors, (214), 165 states have call predecessors, (214), 162 states have call successors, (214) [2022-11-03 01:49:09,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 792 transitions. [2022-11-03 01:49:09,058 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 792 transitions. Word has length 188 [2022-11-03 01:49:09,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:49:09,059 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 792 transitions. [2022-11-03 01:49:09,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 01:49:09,059 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 792 transitions. [2022-11-03 01:49:09,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-03 01:49:09,062 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:49:09,062 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:49:09,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-03 01:49:09,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:49:09,277 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:49:09,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:49:09,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1395722035, now seen corresponding path program 1 times [2022-11-03 01:49:09,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:49:09,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1553963866] [2022-11-03 01:49:09,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:49:09,280 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:49:09,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:49:09,282 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:49:09,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 01:49:11,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:49:11,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 1923 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 01:49:11,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:49:11,820 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-03 01:49:11,821 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:49:11,821 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:49:11,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1553963866] [2022-11-03 01:49:11,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1553963866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:49:11,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:49:11,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 01:49:11,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641069778] [2022-11-03 01:49:11,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:49:11,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 01:49:11,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:49:11,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 01:49:11,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:49:11,824 INFO L87 Difference]: Start difference. First operand 533 states and 792 transitions. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-03 01:49:14,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:49:16,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:49:16,416 INFO L93 Difference]: Finished difference Result 970 states and 1456 transitions. [2022-11-03 01:49:16,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:49:16,418 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 188 [2022-11-03 01:49:16,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:49:16,423 INFO L225 Difference]: With dead ends: 970 [2022-11-03 01:49:16,423 INFO L226 Difference]: Without dead ends: 518 [2022-11-03 01:49:16,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:49:16,428 INFO L413 NwaCegarLoop]: 586 mSDtfsCounter, 8 mSDsluCounter, 4004 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 4590 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:49:16,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 4590 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 408 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-11-03 01:49:16,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2022-11-03 01:49:16,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 518. [2022-11-03 01:49:16,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 321 states have (on average 1.236760124610592) internal successors, (397), 326 states have internal predecessors, (397), 162 states have call successors, (162), 31 states have call predecessors, (162), 33 states have return successors, (208), 161 states have call predecessors, (208), 160 states have call successors, (208) [2022-11-03 01:49:16,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 767 transitions. [2022-11-03 01:49:16,486 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 767 transitions. Word has length 188 [2022-11-03 01:49:16,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:49:16,487 INFO L495 AbstractCegarLoop]: Abstraction has 518 states and 767 transitions. [2022-11-03 01:49:16,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-03 01:49:16,487 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 767 transitions. [2022-11-03 01:49:16,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-11-03 01:49:16,491 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:49:16,492 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:49:16,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-03 01:49:16,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:49:16,713 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:49:16,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:49:16,714 INFO L85 PathProgramCache]: Analyzing trace with hash 905951003, now seen corresponding path program 1 times [2022-11-03 01:49:16,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:49:16,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [395947161] [2022-11-03 01:49:16,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:49:16,716 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:49:16,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:49:16,716 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:49:16,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-03 01:49:18,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:49:18,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 01:49:18,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:49:29,342 INFO L390 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 31 treesize of output 19 [2022-11-03 01:49:29,361 INFO L390 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 25 treesize of output 13 [2022-11-03 01:49:30,061 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-03 01:49:30,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:49:30,061 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:49:30,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [395947161] [2022-11-03 01:49:30,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [395947161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:49:30,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:49:30,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 01:49:30,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590543646] [2022-11-03 01:49:30,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:49:30,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 01:49:30,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:49:30,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 01:49:30,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=87, Unknown=1, NotChecked=0, Total=110 [2022-11-03 01:49:30,065 INFO L87 Difference]: Start difference. First operand 518 states and 767 transitions. Second operand has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 states have internal predecessors, (90), 6 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (25), 6 states have call predecessors, (25), 6 states have call successors, (25) [2022-11-03 01:49:42,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:49:44,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:49:46,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:49:48,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:49:53,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:49:53,618 INFO L93 Difference]: Finished difference Result 991 states and 1522 transitions. [2022-11-03 01:49:53,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 01:49:53,620 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 states have internal predecessors, (90), 6 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (25), 6 states have call predecessors, (25), 6 states have call successors, (25) Word has length 198 [2022-11-03 01:49:53,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:49:53,625 INFO L225 Difference]: With dead ends: 991 [2022-11-03 01:49:53,626 INFO L226 Difference]: Without dead ends: 552 [2022-11-03 01:49:53,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 186 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=70, Invalid=232, Unknown=4, NotChecked=0, Total=306 [2022-11-03 01:49:53,630 INFO L413 NwaCegarLoop]: 608 mSDtfsCounter, 79 mSDsluCounter, 4467 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 11 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 5075 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 123 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:49:53,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 5075 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 747 Invalid, 4 Unknown, 123 Unchecked, 15.4s Time] [2022-11-03 01:49:53,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2022-11-03 01:49:53,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 534. [2022-11-03 01:49:53,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 332 states have (on average 1.2289156626506024) internal successors, (408), 337 states have internal predecessors, (408), 164 states have call successors, (164), 33 states have call predecessors, (164), 36 states have return successors, (210), 164 states have call predecessors, (210), 162 states have call successors, (210) [2022-11-03 01:49:53,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 782 transitions. [2022-11-03 01:49:53,673 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 782 transitions. Word has length 198 [2022-11-03 01:49:53,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:49:53,673 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 782 transitions. [2022-11-03 01:49:53,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 states have internal predecessors, (90), 6 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (25), 6 states have call predecessors, (25), 6 states have call successors, (25) [2022-11-03 01:49:53,674 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 782 transitions. [2022-11-03 01:49:53,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-11-03 01:49:53,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:49:53,676 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:49:53,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-03 01:49:53,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:49:53,893 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:49:53,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:49:53,893 INFO L85 PathProgramCache]: Analyzing trace with hash -807170079, now seen corresponding path program 1 times [2022-11-03 01:49:53,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:49:53,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1623061516] [2022-11-03 01:49:53,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:49:53,896 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:49:53,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:49:53,898 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:49:53,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-03 01:49:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:49:56,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 1949 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:49:56,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:49:56,573 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-03 01:49:56,574 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:49:56,574 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:49:56,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1623061516] [2022-11-03 01:49:56,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1623061516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:49:56,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:49:56,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:49:56,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845119372] [2022-11-03 01:49:56,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:49:56,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:49:56,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:49:56,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:49:56,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:49:56,577 INFO L87 Difference]: Start difference. First operand 534 states and 782 transitions. Second operand has 6 states, 5 states have (on average 17.6) internal successors, (88), 6 states have internal predecessors, (88), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 4 states have call successors, (25) [2022-11-03 01:49:59,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:50:00,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:50:00,062 INFO L93 Difference]: Finished difference Result 970 states and 1454 transitions. [2022-11-03 01:50:00,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:50:00,063 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.6) internal successors, (88), 6 states have internal predecessors, (88), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 4 states have call successors, (25) Word has length 199 [2022-11-03 01:50:00,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:50:00,068 INFO L225 Difference]: With dead ends: 970 [2022-11-03 01:50:00,069 INFO L226 Difference]: Without dead ends: 536 [2022-11-03 01:50:00,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:50:00,072 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 66 mSDsluCounter, 2226 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 2818 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:50:00,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 2818 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 176 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-11-03 01:50:00,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2022-11-03 01:50:00,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 536. [2022-11-03 01:50:00,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 333 states have (on average 1.2282282282282282) internal successors, (409), 339 states have internal predecessors, (409), 164 states have call successors, (164), 33 states have call predecessors, (164), 37 states have return successors, (221), 164 states have call predecessors, (221), 162 states have call successors, (221) [2022-11-03 01:50:00,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 794 transitions. [2022-11-03 01:50:00,111 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 794 transitions. Word has length 199 [2022-11-03 01:50:00,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:50:00,112 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 794 transitions. [2022-11-03 01:50:00,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.6) internal successors, (88), 6 states have internal predecessors, (88), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 4 states have call successors, (25) [2022-11-03 01:50:00,112 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 794 transitions. [2022-11-03 01:50:00,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-03 01:50:00,114 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:50:00,114 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:50:00,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-03 01:50:00,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:50:00,329 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:50:00,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:50:00,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1706346939, now seen corresponding path program 1 times [2022-11-03 01:50:00,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:50:00,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1574627673] [2022-11-03 01:50:00,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:00,331 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:50:00,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:50:00,332 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:50:00,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-03 01:50:02,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:02,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 2091 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:50:02,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:50:03,420 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-03 01:50:03,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:50:03,420 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:50:03,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1574627673] [2022-11-03 01:50:03,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1574627673] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:50:03,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:50:03,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:50:03,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215863286] [2022-11-03 01:50:03,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:50:03,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:50:03,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:50:03,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:50:03,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:50:03,423 INFO L87 Difference]: Start difference. First operand 536 states and 794 transitions. Second operand has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 7 states have internal predecessors, (91), 5 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 4 states have call predecessors, (26), 5 states have call successors, (26) [2022-11-03 01:50:06,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:50:08,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:50:08,131 INFO L93 Difference]: Finished difference Result 975 states and 1479 transitions. [2022-11-03 01:50:08,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:50:08,132 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 7 states have internal predecessors, (91), 5 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 4 states have call predecessors, (26), 5 states have call successors, (26) Word has length 222 [2022-11-03 01:50:08,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:50:08,137 INFO L225 Difference]: With dead ends: 975 [2022-11-03 01:50:08,137 INFO L226 Difference]: Without dead ends: 539 [2022-11-03 01:50:08,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:50:08,141 INFO L413 NwaCegarLoop]: 586 mSDtfsCounter, 89 mSDsluCounter, 2747 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 3333 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:50:08,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 3333 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 328 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2022-11-03 01:50:08,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2022-11-03 01:50:08,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 537. [2022-11-03 01:50:08,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 334 states have (on average 1.2275449101796407) internal successors, (410), 340 states have internal predecessors, (410), 164 states have call successors, (164), 33 states have call predecessors, (164), 37 states have return successors, (221), 164 states have call predecessors, (221), 162 states have call successors, (221) [2022-11-03 01:50:08,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 795 transitions. [2022-11-03 01:50:08,183 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 795 transitions. Word has length 222 [2022-11-03 01:50:08,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:50:08,184 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 795 transitions. [2022-11-03 01:50:08,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 7 states have internal predecessors, (91), 5 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 4 states have call predecessors, (26), 5 states have call successors, (26) [2022-11-03 01:50:08,185 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 795 transitions. [2022-11-03 01:50:08,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-11-03 01:50:08,187 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:50:08,187 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:50:08,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-03 01:50:08,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:50:08,411 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:50:08,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:50:08,412 INFO L85 PathProgramCache]: Analyzing trace with hash 648158902, now seen corresponding path program 1 times [2022-11-03 01:50:08,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:50:08,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [128067284] [2022-11-03 01:50:08,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:08,414 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:50:08,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:50:08,417 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:50:08,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-03 01:50:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:10,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 2022 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:50:10,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:50:11,352 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 153 proven. 3 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-11-03 01:50:11,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:50:12,678 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2022-11-03 01:50:12,679 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:50:12,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [128067284] [2022-11-03 01:50:12,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [128067284] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:50:12,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [886176358] [2022-11-03 01:50:12,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:12,680 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:50:12,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:50:12,683 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:50:12,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-11-03 01:50:14,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:14,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 2022 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:50:14,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:50:14,975 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 153 proven. 3 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-11-03 01:50:14,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:50:16,151 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2022-11-03 01:50:16,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [886176358] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:50:16,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476610045] [2022-11-03 01:50:16,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:16,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:50:16,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:50:16,155 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:50:16,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-03 01:50:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:17,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 2022 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:50:17,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:50:18,293 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 153 proven. 3 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-11-03 01:50:18,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:50:19,452 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2022-11-03 01:50:19,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476610045] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:50:19,452 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 01:50:19,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 10 [2022-11-03 01:50:19,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110490746] [2022-11-03 01:50:19,453 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 01:50:19,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 01:50:19,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:50:19,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 01:50:19,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:50:19,456 INFO L87 Difference]: Start difference. First operand 537 states and 795 transitions. Second operand has 10 states, 9 states have (on average 12.222222222222221) internal successors, (110), 10 states have internal predecessors, (110), 7 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (34), 4 states have call predecessors, (34), 7 states have call successors, (34) [2022-11-03 01:50:22,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:50:25,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:50:25,624 INFO L93 Difference]: Finished difference Result 1007 states and 1530 transitions. [2022-11-03 01:50:25,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:50:25,625 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 12.222222222222221) internal successors, (110), 10 states have internal predecessors, (110), 7 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (34), 4 states have call predecessors, (34), 7 states have call successors, (34) Word has length 223 [2022-11-03 01:50:25,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:50:25,630 INFO L225 Difference]: With dead ends: 1007 [2022-11-03 01:50:25,630 INFO L226 Difference]: Without dead ends: 570 [2022-11-03 01:50:25,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1336 GetRequests, 1325 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-11-03 01:50:25,634 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 107 mSDsluCounter, 4294 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 4864 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:50:25,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 4864 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 571 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2022-11-03 01:50:25,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2022-11-03 01:50:25,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 564. [2022-11-03 01:50:25,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 360 states have (on average 1.2333333333333334) internal successors, (444), 365 states have internal predecessors, (444), 165 states have call successors, (165), 33 states have call predecessors, (165), 37 states have return successors, (222), 166 states have call predecessors, (222), 163 states have call successors, (222) [2022-11-03 01:50:25,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 831 transitions. [2022-11-03 01:50:25,670 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 831 transitions. Word has length 223 [2022-11-03 01:50:25,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:50:25,671 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 831 transitions. [2022-11-03 01:50:25,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 12.222222222222221) internal successors, (110), 10 states have internal predecessors, (110), 7 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (34), 4 states have call predecessors, (34), 7 states have call successors, (34) [2022-11-03 01:50:25,671 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 831 transitions. [2022-11-03 01:50:25,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-11-03 01:50:25,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:50:25,674 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:50:25,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-03 01:50:25,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-03 01:50:26,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2022-11-03 01:50:26,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 01:50:26,289 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:50:26,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:50:26,290 INFO L85 PathProgramCache]: Analyzing trace with hash -2073342888, now seen corresponding path program 2 times [2022-11-03 01:50:26,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:50:26,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1568515519] [2022-11-03 01:50:26,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 01:50:26,292 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:50:26,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:50:26,293 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:50:26,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-03 01:50:29,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 01:50:29,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:50:29,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 2246 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:50:29,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:50:30,552 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2022-11-03 01:50:30,552 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:50:30,552 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:50:30,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1568515519] [2022-11-03 01:50:30,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1568515519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:50:30,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:50:30,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:50:30,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522379705] [2022-11-03 01:50:30,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:50:30,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:50:30,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:50:30,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:50:30,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:50:30,555 INFO L87 Difference]: Start difference. First operand 564 states and 831 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 5 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 5 states have call predecessors, (25), 4 states have call successors, (25) [2022-11-03 01:50:33,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:50:35,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:50:35,314 INFO L93 Difference]: Finished difference Result 1034 states and 1547 transitions. [2022-11-03 01:50:35,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:50:35,316 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 5 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 5 states have call predecessors, (25), 4 states have call successors, (25) Word has length 253 [2022-11-03 01:50:35,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:50:35,319 INFO L225 Difference]: With dead ends: 1034 [2022-11-03 01:50:35,319 INFO L226 Difference]: Without dead ends: 576 [2022-11-03 01:50:35,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:50:35,322 INFO L413 NwaCegarLoop]: 586 mSDtfsCounter, 62 mSDsluCounter, 3352 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 3938 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:50:35,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 3938 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 337 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-11-03 01:50:35,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2022-11-03 01:50:35,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2022-11-03 01:50:35,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 366 states have (on average 1.2322404371584699) internal successors, (451), 371 states have internal predecessors, (451), 170 states have call successors, (170), 34 states have call predecessors, (170), 38 states have return successors, (227), 171 states have call predecessors, (227), 168 states have call successors, (227) [2022-11-03 01:50:35,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 848 transitions. [2022-11-03 01:50:35,364 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 848 transitions. Word has length 253 [2022-11-03 01:50:35,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:50:35,366 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 848 transitions. [2022-11-03 01:50:35,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 states have internal predecessors, (83), 5 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (25), 5 states have call predecessors, (25), 4 states have call successors, (25) [2022-11-03 01:50:35,367 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 848 transitions. [2022-11-03 01:50:35,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2022-11-03 01:50:35,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:50:35,370 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:50:35,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-03 01:50:35,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:50:35,593 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:50:35,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:50:35,594 INFO L85 PathProgramCache]: Analyzing trace with hash -669863688, now seen corresponding path program 1 times [2022-11-03 01:50:35,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:50:35,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [844183721] [2022-11-03 01:50:35,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:35,596 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:50:35,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:50:35,601 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:50:35,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-03 01:50:44,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:44,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 2470 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-03 01:50:44,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:50:46,357 INFO L390 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 9 treesize of output 3 [2022-11-03 01:50:46,368 INFO L390 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 9 treesize of output 3 [2022-11-03 01:50:46,776 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2022-11-03 01:50:46,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:50:46,776 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:50:46,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [844183721] [2022-11-03 01:50:46,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [844183721] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:50:46,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:50:46,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-03 01:50:46,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723670981] [2022-11-03 01:50:46,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:50:46,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 01:50:46,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:50:46,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 01:50:46,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:50:46,780 INFO L87 Difference]: Start difference. First operand 576 states and 848 transitions. Second operand has 14 states, 13 states have (on average 9.076923076923077) internal successors, (118), 14 states have internal predecessors, (118), 7 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) [2022-11-03 01:50:54,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:50:57,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:51:04,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:04,688 INFO L93 Difference]: Finished difference Result 1181 states and 1824 transitions. [2022-11-03 01:51:04,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-03 01:51:04,690 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 9.076923076923077) internal successors, (118), 14 states have internal predecessors, (118), 7 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) Word has length 283 [2022-11-03 01:51:04,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:04,694 INFO L225 Difference]: With dead ends: 1181 [2022-11-03 01:51:04,695 INFO L226 Difference]: Without dead ends: 646 [2022-11-03 01:51:04,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2022-11-03 01:51:04,699 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 98 mSDsluCounter, 6004 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 6584 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:04,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 6584 Invalid, 1484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1469 Invalid, 2 Unknown, 0 Unchecked, 15.8s Time] [2022-11-03 01:51:04,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2022-11-03 01:51:04,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 602. [2022-11-03 01:51:04,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 390 states have (on average 1.2384615384615385) internal successors, (483), 395 states have internal predecessors, (483), 170 states have call successors, (170), 34 states have call predecessors, (170), 40 states have return successors, (246), 173 states have call predecessors, (246), 168 states have call successors, (246) [2022-11-03 01:51:04,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 899 transitions. [2022-11-03 01:51:04,750 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 899 transitions. Word has length 283 [2022-11-03 01:51:04,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:04,750 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 899 transitions. [2022-11-03 01:51:04,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 9.076923076923077) internal successors, (118), 14 states have internal predecessors, (118), 7 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) [2022-11-03 01:51:04,751 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 899 transitions. [2022-11-03 01:51:04,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-11-03 01:51:04,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:04,754 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:04,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:04,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:51:04,977 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:04,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:04,978 INFO L85 PathProgramCache]: Analyzing trace with hash 340233302, now seen corresponding path program 1 times [2022-11-03 01:51:04,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:04,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [152325800] [2022-11-03 01:51:04,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:04,981 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:04,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:04,982 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:04,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-03 01:51:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:07,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 2355 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:51:07,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:07,545 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 206 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2022-11-03 01:51:07,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:07,545 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:07,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [152325800] [2022-11-03 01:51:07,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [152325800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:07,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:51:07,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:51:07,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583176581] [2022-11-03 01:51:07,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:07,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:51:07,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:07,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:51:07,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:51:07,549 INFO L87 Difference]: Start difference. First operand 602 states and 899 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 01:51:07,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:07,750 INFO L93 Difference]: Finished difference Result 1174 states and 1855 transitions. [2022-11-03 01:51:07,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:51:07,753 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 268 [2022-11-03 01:51:07,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:07,759 INFO L225 Difference]: With dead ends: 1174 [2022-11-03 01:51:07,759 INFO L226 Difference]: Without dead ends: 608 [2022-11-03 01:51:07,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:51:07,767 INFO L413 NwaCegarLoop]: 627 mSDtfsCounter, 7 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1861 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:07,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1861 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:51:07,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-11-03 01:51:07,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 602. [2022-11-03 01:51:07,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 390 states have (on average 1.2333333333333334) internal successors, (481), 395 states have internal predecessors, (481), 170 states have call successors, (170), 34 states have call predecessors, (170), 40 states have return successors, (246), 173 states have call predecessors, (246), 168 states have call successors, (246) [2022-11-03 01:51:07,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 897 transitions. [2022-11-03 01:51:07,811 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 897 transitions. Word has length 268 [2022-11-03 01:51:07,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:07,812 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 897 transitions. [2022-11-03 01:51:07,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 01:51:07,813 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 897 transitions. [2022-11-03 01:51:07,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-11-03 01:51:07,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:07,815 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:07,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2022-11-03 01:51:08,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:51:08,035 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:08,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:08,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1345728164, now seen corresponding path program 1 times [2022-11-03 01:51:08,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:08,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1370200404] [2022-11-03 01:51:08,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:08,039 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:08,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:08,049 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:08,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-03 01:51:10,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:10,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 2373 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:51:10,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:10,591 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2022-11-03 01:51:10,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:10,592 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:10,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1370200404] [2022-11-03 01:51:10,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1370200404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:10,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:51:10,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:51:10,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260716062] [2022-11-03 01:51:10,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:10,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:51:10,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:10,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:51:10,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:51:10,595 INFO L87 Difference]: Start difference. First operand 602 states and 897 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-03 01:51:10,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:10,886 INFO L93 Difference]: Finished difference Result 1147 states and 1786 transitions. [2022-11-03 01:51:10,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:51:10,887 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 274 [2022-11-03 01:51:10,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:10,891 INFO L225 Difference]: With dead ends: 1147 [2022-11-03 01:51:10,891 INFO L226 Difference]: Without dead ends: 607 [2022-11-03 01:51:10,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:51:10,894 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 7 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1839 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:10,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1839 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:51:10,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2022-11-03 01:51:10,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 603. [2022-11-03 01:51:10,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 391 states have (on average 1.2327365728900255) internal successors, (482), 396 states have internal predecessors, (482), 170 states have call successors, (170), 34 states have call predecessors, (170), 40 states have return successors, (246), 173 states have call predecessors, (246), 168 states have call successors, (246) [2022-11-03 01:51:10,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 898 transitions. [2022-11-03 01:51:10,931 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 898 transitions. Word has length 274 [2022-11-03 01:51:10,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:10,932 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 898 transitions. [2022-11-03 01:51:10,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-03 01:51:10,933 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 898 transitions. [2022-11-03 01:51:10,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-11-03 01:51:10,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:10,935 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:11,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:11,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:51:11,153 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:11,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:11,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1297425115, now seen corresponding path program 1 times [2022-11-03 01:51:11,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:11,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [291790847] [2022-11-03 01:51:11,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:11,156 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:11,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:11,158 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:11,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-03 01:51:13,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:13,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 2375 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 01:51:13,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:14,515 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 247 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2022-11-03 01:51:14,515 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:14,516 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:14,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [291790847] [2022-11-03 01:51:14,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [291790847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:14,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:51:14,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 01:51:14,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682493076] [2022-11-03 01:51:14,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:14,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 01:51:14,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:14,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 01:51:14,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:51:14,519 INFO L87 Difference]: Start difference. First operand 603 states and 898 transitions. Second operand has 10 states, 9 states have (on average 13.444444444444445) internal successors, (121), 8 states have internal predecessors, (121), 3 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-03 01:51:17,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:17,505 INFO L93 Difference]: Finished difference Result 1160 states and 1790 transitions. [2022-11-03 01:51:17,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 01:51:17,507 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.444444444444445) internal successors, (121), 8 states have internal predecessors, (121), 3 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) Word has length 274 [2022-11-03 01:51:17,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:17,511 INFO L225 Difference]: With dead ends: 1160 [2022-11-03 01:51:17,512 INFO L226 Difference]: Without dead ends: 622 [2022-11-03 01:51:17,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-03 01:51:17,518 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 4 mSDsluCounter, 4674 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 5275 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:17,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 5275 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-03 01:51:17,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2022-11-03 01:51:17,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 605. [2022-11-03 01:51:17,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 392 states have (on average 1.2321428571428572) internal successors, (483), 398 states have internal predecessors, (483), 170 states have call successors, (170), 34 states have call predecessors, (170), 41 states have return successors, (252), 173 states have call predecessors, (252), 168 states have call successors, (252) [2022-11-03 01:51:17,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 905 transitions. [2022-11-03 01:51:17,576 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 905 transitions. Word has length 274 [2022-11-03 01:51:17,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:17,577 INFO L495 AbstractCegarLoop]: Abstraction has 605 states and 905 transitions. [2022-11-03 01:51:17,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.444444444444445) internal successors, (121), 8 states have internal predecessors, (121), 3 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-03 01:51:17,577 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 905 transitions. [2022-11-03 01:51:17,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-11-03 01:51:17,580 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:17,581 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:17,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:17,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:51:17,805 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:17,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:17,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1225682740, now seen corresponding path program 1 times [2022-11-03 01:51:17,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:17,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243486096] [2022-11-03 01:51:17,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:17,808 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:17,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:17,809 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:17,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-03 01:51:20,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:20,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 2365 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:51:20,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:20,946 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2022-11-03 01:51:20,946 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:20,946 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:20,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243486096] [2022-11-03 01:51:20,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1243486096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:20,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:51:20,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:51:20,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613337163] [2022-11-03 01:51:20,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:20,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:51:20,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:20,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:51:20,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:51:20,949 INFO L87 Difference]: Start difference. First operand 605 states and 905 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 01:51:24,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:51:26,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:51:29,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:29,504 INFO L93 Difference]: Finished difference Result 1188 states and 1892 transitions. [2022-11-03 01:51:29,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:51:29,508 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 270 [2022-11-03 01:51:29,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:29,513 INFO L225 Difference]: With dead ends: 1188 [2022-11-03 01:51:29,513 INFO L226 Difference]: Without dead ends: 619 [2022-11-03 01:51:29,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:51:29,520 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 15 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2384 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:29,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2384 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 176 Invalid, 2 Unknown, 0 Unchecked, 8.1s Time] [2022-11-03 01:51:29,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2022-11-03 01:51:29,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 607. [2022-11-03 01:51:29,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 394 states have (on average 1.2309644670050761) internal successors, (485), 400 states have internal predecessors, (485), 170 states have call successors, (170), 34 states have call predecessors, (170), 41 states have return successors, (252), 173 states have call predecessors, (252), 168 states have call successors, (252) [2022-11-03 01:51:29,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 907 transitions. [2022-11-03 01:51:29,561 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 907 transitions. Word has length 270 [2022-11-03 01:51:29,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:29,561 INFO L495 AbstractCegarLoop]: Abstraction has 607 states and 907 transitions. [2022-11-03 01:51:29,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 01:51:29,562 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 907 transitions. [2022-11-03 01:51:29,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-11-03 01:51:29,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:29,564 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:29,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-03 01:51:29,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:51:29,780 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:29,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:29,780 INFO L85 PathProgramCache]: Analyzing trace with hash 181413624, now seen corresponding path program 1 times [2022-11-03 01:51:29,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:51:29,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1514877498] [2022-11-03 01:51:29,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:29,783 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:51:29,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:51:29,784 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:51:29,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-03 01:51:38,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:38,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 2478 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-03 01:51:38,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:40,678 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:51:40,678 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 65 treesize of output 17 [2022-11-03 01:51:41,042 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-03 01:51:41,043 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:51:41,043 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:51:41,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1514877498] [2022-11-03 01:51:41,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1514877498] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:41,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:51:41,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 01:51:41,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374464300] [2022-11-03 01:51:41,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:41,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 01:51:41,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:51:41,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 01:51:41,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:51:41,045 INFO L87 Difference]: Start difference. First operand 607 states and 907 transitions. Second operand has 12 states, 11 states have (on average 10.636363636363637) internal successors, (117), 12 states have internal predecessors, (117), 7 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) [2022-11-03 01:51:49,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:51:52,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:52:00,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:00,847 INFO L93 Difference]: Finished difference Result 1189 states and 1864 transitions. [2022-11-03 01:52:00,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 01:52:00,852 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 10.636363636363637) internal successors, (117), 12 states have internal predecessors, (117), 7 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) Word has length 287 [2022-11-03 01:52:00,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:00,857 INFO L225 Difference]: With dead ends: 1189 [2022-11-03 01:52:00,858 INFO L226 Difference]: Without dead ends: 618 [2022-11-03 01:52:00,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-11-03 01:52:00,864 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 84 mSDsluCounter, 5330 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5902 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:00,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5902 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1224 Invalid, 2 Unknown, 0 Unchecked, 18.0s Time] [2022-11-03 01:52:00,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2022-11-03 01:52:00,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 585. [2022-11-03 01:52:00,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 372 states have (on average 1.2096774193548387) internal successors, (450), 378 states have internal predecessors, (450), 170 states have call successors, (170), 34 states have call predecessors, (170), 41 states have return successors, (252), 173 states have call predecessors, (252), 168 states have call successors, (252) [2022-11-03 01:52:00,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 872 transitions. [2022-11-03 01:52:00,931 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 872 transitions. Word has length 287 [2022-11-03 01:52:00,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:00,931 INFO L495 AbstractCegarLoop]: Abstraction has 585 states and 872 transitions. [2022-11-03 01:52:00,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 10.636363636363637) internal successors, (117), 12 states have internal predecessors, (117), 7 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) [2022-11-03 01:52:00,933 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 872 transitions. [2022-11-03 01:52:00,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-11-03 01:52:00,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:00,936 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:52:01,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-03 01:52:01,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:52:01,161 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:52:01,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:01,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1831457522, now seen corresponding path program 1 times [2022-11-03 01:52:01,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:52:01,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1043440238] [2022-11-03 01:52:01,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:01,167 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:52:01,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:52:01,168 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:52:01,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-03 01:52:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:04,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 2362 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 01:52:04,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:52:05,262 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2022-11-03 01:52:05,262 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:52:05,263 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:52:05,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1043440238] [2022-11-03 01:52:05,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1043440238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:52:05,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:52:05,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 01:52:05,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696834372] [2022-11-03 01:52:05,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:52:05,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 01:52:05,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:52:05,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 01:52:05,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:52:05,266 INFO L87 Difference]: Start difference. First operand 585 states and 872 transitions. Second operand has 9 states, 8 states have (on average 15.0) internal successors, (120), 9 states have internal predecessors, (120), 6 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 5 states have call predecessors, (29), 6 states have call successors, (29) [2022-11-03 01:52:09,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:52:12,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:12,644 INFO L93 Difference]: Finished difference Result 1077 states and 1649 transitions. [2022-11-03 01:52:12,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 01:52:12,645 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 15.0) internal successors, (120), 9 states have internal predecessors, (120), 6 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 5 states have call predecessors, (29), 6 states have call successors, (29) Word has length 270 [2022-11-03 01:52:12,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:12,648 INFO L225 Difference]: With dead ends: 1077 [2022-11-03 01:52:12,649 INFO L226 Difference]: Without dead ends: 592 [2022-11-03 01:52:12,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:52:12,652 INFO L413 NwaCegarLoop]: 571 mSDtfsCounter, 161 mSDsluCounter, 3749 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 41 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 4320 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:12,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 4320 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 711 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2022-11-03 01:52:12,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2022-11-03 01:52:12,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 564. [2022-11-03 01:52:12,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 352 states have (on average 1.2073863636363635) internal successors, (425), 358 states have internal predecessors, (425), 169 states have call successors, (169), 34 states have call predecessors, (169), 41 states have return successors, (250), 172 states have call predecessors, (250), 167 states have call successors, (250) [2022-11-03 01:52:12,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 844 transitions. [2022-11-03 01:52:12,690 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 844 transitions. Word has length 270 [2022-11-03 01:52:12,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:12,691 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 844 transitions. [2022-11-03 01:52:12,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 15.0) internal successors, (120), 9 states have internal predecessors, (120), 6 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 5 states have call predecessors, (29), 6 states have call successors, (29) [2022-11-03 01:52:12,691 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 844 transitions. [2022-11-03 01:52:12,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-11-03 01:52:12,694 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:12,694 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:52:12,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-03 01:52:12,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:52:12,917 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:52:12,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:12,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1636995336, now seen corresponding path program 1 times [2022-11-03 01:52:12,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:52:12,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1563858777] [2022-11-03 01:52:12,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:12,920 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:52:12,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:52:12,921 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:52:12,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d294d6-67f2-4aff-9e11-ddcd950ec0ce/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process