./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 00eefb20b1e97d60d3c6a842acdb225be14d327e18edfa8146d29fe131145042 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:25:57,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:25:57,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:25:57,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:25:57,861 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:25:57,863 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:25:57,865 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:25:57,869 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:25:57,872 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:25:57,874 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:25:57,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:25:57,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:25:57,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:25:57,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:25:57,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:25:57,885 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:25:57,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:25:57,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:25:57,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:25:57,901 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:25:57,916 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:25:57,926 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:25:57,929 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:25:57,930 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:25:57,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:25:57,944 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:25:57,944 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:25:57,946 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:25:57,949 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:25:57,951 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:25:57,953 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:25:57,955 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:25:57,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:25:57,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:25:57,961 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:25:57,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:25:57,964 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:25:57,964 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:25:57,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:25:57,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:25:57,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:25:57,970 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-23 13:25:58,020 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:25:58,020 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:25:58,021 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:25:58,021 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:25:58,023 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:25:58,023 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:25:58,024 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:25:58,024 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:25:58,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:25:58,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:25:58,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:25:58,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:25:58,026 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:25:58,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:25:58,026 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:25:58,027 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:25:58,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:25:58,027 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:25:58,028 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:25:58,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:25:58,029 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:25:58,029 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:25:58,029 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:25:58,029 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:25:58,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:25:58,030 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:25:58,030 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:25:58,031 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:25:58,031 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:25:58,031 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_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00eefb20b1e97d60d3c6a842acdb225be14d327e18edfa8146d29fe131145042 [2021-11-23 13:25:58,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:25:58,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:25:58,389 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:25:58,392 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:25:58,394 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:25:58,396 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i [2021-11-23 13:25:58,500 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/data/50e857302/af236d70da3c415fb2bba4645164d405/FLAG8ff4a7702 [2021-11-23 13:25:59,599 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:25:59,600 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i [2021-11-23 13:25:59,643 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/data/50e857302/af236d70da3c415fb2bba4645164d405/FLAG8ff4a7702 [2021-11-23 13:25:59,892 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/data/50e857302/af236d70da3c415fb2bba4645164d405 [2021-11-23 13:25:59,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:25:59,897 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:25:59,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:25:59,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:25:59,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:25:59,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:25:59" (1/1) ... [2021-11-23 13:25:59,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@552bd8a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:25:59, skipping insertion in model container [2021-11-23 13:25:59,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:25:59" (1/1) ... [2021-11-23 13:25:59,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:26:00,110 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:26:00,527 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_f1ce0568-ffb0-4d09-b985-d9bd8b719050/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i[4501,4514] [2021-11-23 13:26:00,538 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_f1ce0568-ffb0-4d09-b985-d9bd8b719050/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i[4561,4574] [2021-11-23 13:26:01,733 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:01,735 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:01,736 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:01,737 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:01,739 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:01,760 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:01,761 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:01,765 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:01,766 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:01,769 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:01,770 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:01,771 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:01,772 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:02,381 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 13:26:02,383 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 13:26:02,385 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 13:26:02,387 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 13:26:02,389 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 13:26:02,396 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 13:26:02,398 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 13:26:02,401 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 13:26:02,403 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 13:26:02,418 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 13:26:02,631 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 13:26:02,672 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:02,697 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:02,832 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:02,833 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:02,834 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:02,834 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:02,835 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:02,835 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:02,836 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:02,837 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:02,837 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:02,838 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:02,838 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:02,839 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:02,839 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:02,843 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:02,844 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:02,844 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:02,844 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:02,849 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:02,849 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:02,861 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:02,862 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:02,862 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:02,880 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:26:02,915 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:26:02,932 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_f1ce0568-ffb0-4d09-b985-d9bd8b719050/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i[4501,4514] [2021-11-23 13:26:02,933 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_f1ce0568-ffb0-4d09-b985-d9bd8b719050/sv-benchmarks/c/aws-c-common/aws_priority_queue_push_ref_harness.i[4561,4574] [2021-11-23 13:26:02,979 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:02,979 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:02,980 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:02,980 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:02,981 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:02,989 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:02,989 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:02,991 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:02,991 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:02,992 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:02,993 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:03,002 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:03,003 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:03,043 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 13:26:03,044 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 13:26:03,045 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 13:26:03,046 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 13:26:03,047 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 13:26:03,048 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 13:26:03,049 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 13:26:03,054 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 13:26:03,054 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 13:26:03,055 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 13:26:03,103 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 13:26:03,128 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:03,138 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:03,180 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:03,181 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:03,182 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:03,183 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:03,184 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:03,185 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:03,185 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:03,186 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:03,187 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:03,189 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:03,190 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:03,190 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:03,191 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:03,193 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:03,194 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:03,194 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:03,196 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:03,199 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:03,199 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:03,208 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:03,210 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:03,211 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:26:03,231 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:26:03,622 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:26:03,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:26:03 WrapperNode [2021-11-23 13:26:03,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:26:03,624 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:26:03,624 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:26:03,624 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:26:03,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:26:03" (1/1) ... [2021-11-23 13:26:03,792 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:26:03" (1/1) ... [2021-11-23 13:26:04,261 INFO L137 Inliner]: procedures = 697, calls = 1880, calls flagged for inlining = 787, calls inlined = 931, statements flattened = 12386 [2021-11-23 13:26:04,261 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:26:04,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:26:04,264 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:26:04,264 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:26:04,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:26:03" (1/1) ... [2021-11-23 13:26:04,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:26:03" (1/1) ... [2021-11-23 13:26:04,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:26:03" (1/1) ... [2021-11-23 13:26:04,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:26:03" (1/1) ... [2021-11-23 13:26:04,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:26:03" (1/1) ... [2021-11-23 13:26:04,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:26:03" (1/1) ... [2021-11-23 13:26:04,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:26:03" (1/1) ... [2021-11-23 13:26:04,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:26:04,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:26:04,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:26:04,895 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:26:04,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:26:03" (1/1) ... [2021-11-23 13:26:04,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:26:04,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:26:04,940 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:26:04,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:26:05,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 13:26:05,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 13:26:05,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 13:26:05,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:26:05,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 13:26:05,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:26:05,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:26:05,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 13:26:05,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 13:26:05,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 13:26:05,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 13:26:05,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:26:05,653 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:26:05,655 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:26:13,708 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:26:13,770 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:26:13,770 INFO L301 CfgBuilder]: Removed 21 assume(true) statements. [2021-11-23 13:26:13,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:26:13 BoogieIcfgContainer [2021-11-23 13:26:13,779 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:26:13,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:26:13,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:26:13,787 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:26:13,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:25:59" (1/3) ... [2021-11-23 13:26:13,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce5c848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:26:13, skipping insertion in model container [2021-11-23 13:26:13,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:26:03" (2/3) ... [2021-11-23 13:26:13,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce5c848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:26:13, skipping insertion in model container [2021-11-23 13:26:13,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:26:13" (3/3) ... [2021-11-23 13:26:13,796 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_push_ref_harness.i [2021-11-23 13:26:13,804 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:26:13,804 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 63 error locations. [2021-11-23 13:26:13,892 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:26:13,900 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 13:26:13,900 INFO L340 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2021-11-23 13:26:13,993 INFO L276 IsEmpty]: Start isEmpty. Operand has 2321 states, 2257 states have (on average 1.412051395657953) internal successors, (3187), 2320 states have internal predecessors, (3187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:14,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-23 13:26:14,007 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:26:14,007 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:26:14,008 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-23 13:26:14,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:26:14,016 INFO L85 PathProgramCache]: Analyzing trace with hash -966206977, now seen corresponding path program 1 times [2021-11-23 13:26:14,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:26:14,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053515565] [2021-11-23 13:26:14,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:26:14,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:26:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:26:14,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:26:14,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:26:14,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053515565] [2021-11-23 13:26:14,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053515565] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:26:14,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:26:14,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:26:14,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687142518] [2021-11-23 13:26:14,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:26:14,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 13:26:14,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:26:14,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 13:26:14,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 13:26:14,850 INFO L87 Difference]: Start difference. First operand has 2321 states, 2257 states have (on average 1.412051395657953) internal successors, (3187), 2320 states have internal predecessors, (3187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:15,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:26:15,067 INFO L93 Difference]: Finished difference Result 4635 states and 6366 transitions. [2021-11-23 13:26:15,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 13:26:15,070 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-23 13:26:15,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:26:15,114 INFO L225 Difference]: With dead ends: 4635 [2021-11-23 13:26:15,115 INFO L226 Difference]: Without dead ends: 2315 [2021-11-23 13:26:15,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 13:26:15,139 INFO L933 BasicCegarLoop]: 2989 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, 2989 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:26:15,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2989 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:26:15,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2315 states. [2021-11-23 13:26:15,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2315 to 2315. [2021-11-23 13:26:15,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2315 states, 2252 states have (on average 1.325044404973357) internal successors, (2984), 2314 states have internal predecessors, (2984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:15,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2315 states to 2315 states and 2984 transitions. [2021-11-23 13:26:15,348 INFO L78 Accepts]: Start accepts. Automaton has 2315 states and 2984 transitions. Word has length 64 [2021-11-23 13:26:15,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:26:15,349 INFO L470 AbstractCegarLoop]: Abstraction has 2315 states and 2984 transitions. [2021-11-23 13:26:15,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:15,350 INFO L276 IsEmpty]: Start isEmpty. Operand 2315 states and 2984 transitions. [2021-11-23 13:26:15,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-23 13:26:15,354 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:26:15,354 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:26:15,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 13:26:15,355 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-23 13:26:15,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:26:15,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1823598091, now seen corresponding path program 1 times [2021-11-23 13:26:15,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:26:15,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780903649] [2021-11-23 13:26:15,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:26:15,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:26:15,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:26:15,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:26:15,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:26:15,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780903649] [2021-11-23 13:26:15,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780903649] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:26:15,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:26:15,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:26:15,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137063453] [2021-11-23 13:26:15,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:26:15,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:26:15,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:26:15,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:26:15,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:26:15,736 INFO L87 Difference]: Start difference. First operand 2315 states and 2984 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:16,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:26:16,054 INFO L93 Difference]: Finished difference Result 4550 states and 5863 transitions. [2021-11-23 13:26:16,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:26:16,055 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-23 13:26:16,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:26:16,074 INFO L225 Difference]: With dead ends: 4550 [2021-11-23 13:26:16,075 INFO L226 Difference]: Without dead ends: 2315 [2021-11-23 13:26:16,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:26:16,082 INFO L933 BasicCegarLoop]: 2969 mSDtfsCounter, 4659 mSDsluCounter, 1252 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4659 SdHoareTripleChecker+Valid, 4221 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:26:16,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4659 Valid, 4221 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:26:16,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2315 states. [2021-11-23 13:26:16,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2315 to 2315. [2021-11-23 13:26:16,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2315 states, 2252 states have (on average 1.3237122557726466) internal successors, (2981), 2314 states have internal predecessors, (2981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:16,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2315 states to 2315 states and 2981 transitions. [2021-11-23 13:26:16,198 INFO L78 Accepts]: Start accepts. Automaton has 2315 states and 2981 transitions. Word has length 64 [2021-11-23 13:26:16,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:26:16,202 INFO L470 AbstractCegarLoop]: Abstraction has 2315 states and 2981 transitions. [2021-11-23 13:26:16,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:16,203 INFO L276 IsEmpty]: Start isEmpty. Operand 2315 states and 2981 transitions. [2021-11-23 13:26:16,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-23 13:26:16,213 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:26:16,213 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:26:16,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 13:26:16,214 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-23 13:26:16,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:26:16,215 INFO L85 PathProgramCache]: Analyzing trace with hash 998964115, now seen corresponding path program 1 times [2021-11-23 13:26:16,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:26:16,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8997459] [2021-11-23 13:26:16,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:26:16,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:26:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:26:16,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:26:16,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:26:16,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8997459] [2021-11-23 13:26:16,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8997459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:26:16,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:26:16,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:26:16,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613055093] [2021-11-23 13:26:16,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:26:16,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:26:16,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:26:16,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:26:16,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:26:16,726 INFO L87 Difference]: Start difference. First operand 2315 states and 2981 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:18,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:26:18,676 INFO L93 Difference]: Finished difference Result 5249 states and 6726 transitions. [2021-11-23 13:26:18,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:26:18,677 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-23 13:26:18,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:26:18,698 INFO L225 Difference]: With dead ends: 5249 [2021-11-23 13:26:18,699 INFO L226 Difference]: Without dead ends: 2982 [2021-11-23 13:26:18,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:26:18,705 INFO L933 BasicCegarLoop]: 2948 mSDtfsCounter, 6382 mSDsluCounter, 3064 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6382 SdHoareTripleChecker+Valid, 6012 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-23 13:26:18,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6382 Valid, 6012 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-23 13:26:18,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2982 states. [2021-11-23 13:26:18,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2982 to 2315. [2021-11-23 13:26:18,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2315 states, 2252 states have (on average 1.322380106571936) internal successors, (2978), 2314 states have internal predecessors, (2978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:18,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2315 states to 2315 states and 2978 transitions. [2021-11-23 13:26:18,834 INFO L78 Accepts]: Start accepts. Automaton has 2315 states and 2978 transitions. Word has length 72 [2021-11-23 13:26:18,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:26:18,835 INFO L470 AbstractCegarLoop]: Abstraction has 2315 states and 2978 transitions. [2021-11-23 13:26:18,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:18,836 INFO L276 IsEmpty]: Start isEmpty. Operand 2315 states and 2978 transitions. [2021-11-23 13:26:18,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 13:26:18,837 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:26:18,838 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:26:18,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 13:26:18,838 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-23 13:26:18,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:26:18,839 INFO L85 PathProgramCache]: Analyzing trace with hash -984193973, now seen corresponding path program 1 times [2021-11-23 13:26:18,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:26:18,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479532068] [2021-11-23 13:26:18,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:26:18,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:26:18,948 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:26:18,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [931784708] [2021-11-23 13:26:18,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:26:18,949 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:26:18,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:26:18,955 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:26:18,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 13:26:19,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:26:19,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 2350 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 13:26:19,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:26:20,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:26:20,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:26:20,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:26:20,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479532068] [2021-11-23 13:26:20,124 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:26:20,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931784708] [2021-11-23 13:26:20,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931784708] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:26:20,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:26:20,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:26:20,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418581373] [2021-11-23 13:26:20,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:26:20,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:26:20,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:26:20,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:26:20,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:26:20,130 INFO L87 Difference]: Start difference. First operand 2315 states and 2978 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:21,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:26:21,426 INFO L93 Difference]: Finished difference Result 5257 states and 6741 transitions. [2021-11-23 13:26:21,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:26:21,428 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-23 13:26:21,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:26:21,452 INFO L225 Difference]: With dead ends: 5257 [2021-11-23 13:26:21,452 INFO L226 Difference]: Without dead ends: 3021 [2021-11-23 13:26:21,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:26:21,461 INFO L933 BasicCegarLoop]: 2830 mSDtfsCounter, 11995 mSDsluCounter, 2354 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11995 SdHoareTripleChecker+Valid, 5184 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 13:26:21,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11995 Valid, 5184 Invalid, 344 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 13:26:21,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3021 states. [2021-11-23 13:26:21,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3021 to 2315. [2021-11-23 13:26:21,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2315 states, 2252 states have (on average 1.3210479573712255) internal successors, (2975), 2314 states have internal predecessors, (2975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:21,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2315 states to 2315 states and 2975 transitions. [2021-11-23 13:26:21,624 INFO L78 Accepts]: Start accepts. Automaton has 2315 states and 2975 transitions. Word has length 88 [2021-11-23 13:26:21,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:26:21,625 INFO L470 AbstractCegarLoop]: Abstraction has 2315 states and 2975 transitions. [2021-11-23 13:26:21,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:21,625 INFO L276 IsEmpty]: Start isEmpty. Operand 2315 states and 2975 transitions. [2021-11-23 13:26:21,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-23 13:26:21,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:26:21,634 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:26:21,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 13:26:21,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:26:21,862 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-23 13:26:21,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:26:21,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1935115155, now seen corresponding path program 1 times [2021-11-23 13:26:21,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:26:21,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091765879] [2021-11-23 13:26:21,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:26:21,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:26:21,976 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:26:21,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2090387940] [2021-11-23 13:26:21,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:26:21,977 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:26:21,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:26:21,982 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:26:22,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 13:26:22,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:26:22,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 2452 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:26:22,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:26:22,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:26:22,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:26:22,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:26:22,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091765879] [2021-11-23 13:26:22,928 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:26:22,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090387940] [2021-11-23 13:26:22,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090387940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:26:22,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:26:22,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:26:22,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809151] [2021-11-23 13:26:22,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:26:22,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:26:22,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:26:22,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:26:22,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:26:22,937 INFO L87 Difference]: Start difference. First operand 2315 states and 2975 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:23,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:26:23,451 INFO L93 Difference]: Finished difference Result 4599 states and 5910 transitions. [2021-11-23 13:26:23,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:26:23,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-23 13:26:23,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:26:23,471 INFO L225 Difference]: With dead ends: 4599 [2021-11-23 13:26:23,472 INFO L226 Difference]: Without dead ends: 2355 [2021-11-23 13:26:23,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:26:23,478 INFO L933 BasicCegarLoop]: 2971 mSDtfsCounter, 21 mSDsluCounter, 5840 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 8811 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:26:23,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 8811 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 13:26:23,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2355 states. [2021-11-23 13:26:23,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2355 to 2335. [2021-11-23 13:26:23,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2335 states, 2272 states have (on average 1.3182218309859155) internal successors, (2995), 2334 states have internal predecessors, (2995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:23,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2335 states to 2335 states and 2995 transitions. [2021-11-23 13:26:23,656 INFO L78 Accepts]: Start accepts. Automaton has 2335 states and 2995 transitions. Word has length 112 [2021-11-23 13:26:23,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:26:23,658 INFO L470 AbstractCegarLoop]: Abstraction has 2335 states and 2995 transitions. [2021-11-23 13:26:23,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:23,659 INFO L276 IsEmpty]: Start isEmpty. Operand 2335 states and 2995 transitions. [2021-11-23 13:26:23,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-23 13:26:23,664 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:26:23,664 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:26:23,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 13:26:23,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:26:23,890 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-23 13:26:23,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:26:23,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1660355541, now seen corresponding path program 1 times [2021-11-23 13:26:23,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:26:23,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678899598] [2021-11-23 13:26:23,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:26:23,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:26:24,007 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:26:24,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1701827810] [2021-11-23 13:26:24,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:26:24,008 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:26:24,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:26:24,010 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:26:24,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 13:26:24,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:26:24,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 2447 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 13:26:24,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:26:25,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:26:25,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:26:25,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:26:25,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678899598] [2021-11-23 13:26:25,097 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:26:25,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701827810] [2021-11-23 13:26:25,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701827810] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:26:25,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:26:25,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 13:26:25,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045462795] [2021-11-23 13:26:25,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:26:25,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 13:26:25,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:26:25,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 13:26:25,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:26:25,102 INFO L87 Difference]: Start difference. First operand 2335 states and 2995 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:28,731 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 13:26:29,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:26:29,678 INFO L93 Difference]: Finished difference Result 5313 states and 6799 transitions. [2021-11-23 13:26:29,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 13:26:29,679 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-23 13:26:29,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:26:29,701 INFO L225 Difference]: With dead ends: 5313 [2021-11-23 13:26:29,701 INFO L226 Difference]: Without dead ends: 3041 [2021-11-23 13:26:29,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-11-23 13:26:29,708 INFO L933 BasicCegarLoop]: 2797 mSDtfsCounter, 12193 mSDsluCounter, 4393 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12193 SdHoareTripleChecker+Valid, 7190 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:26:29,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12193 Valid, 7190 Invalid, 1115 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [42 Valid, 1073 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-11-23 13:26:29,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3041 states. [2021-11-23 13:26:29,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3041 to 2335. [2021-11-23 13:26:29,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2335 states, 2272 states have (on average 1.3169014084507042) internal successors, (2992), 2334 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:29,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2335 states to 2335 states and 2992 transitions. [2021-11-23 13:26:29,864 INFO L78 Accepts]: Start accepts. Automaton has 2335 states and 2992 transitions. Word has length 112 [2021-11-23 13:26:29,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:26:29,864 INFO L470 AbstractCegarLoop]: Abstraction has 2335 states and 2992 transitions. [2021-11-23 13:26:29,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:29,865 INFO L276 IsEmpty]: Start isEmpty. Operand 2335 states and 2992 transitions. [2021-11-23 13:26:29,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-23 13:26:29,867 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:26:29,867 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:26:29,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 13:26:30,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-23 13:26:30,094 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-23 13:26:30,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:26:30,094 INFO L85 PathProgramCache]: Analyzing trace with hash 485350515, now seen corresponding path program 1 times [2021-11-23 13:26:30,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:26:30,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834468008] [2021-11-23 13:26:30,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:26:30,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:26:30,182 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:26:30,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [518247329] [2021-11-23 13:26:30,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:26:30,183 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:26:30,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:26:30,184 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:26:30,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 13:26:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:26:30,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 2629 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 13:26:30,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:26:31,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:26:31,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:26:31,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:26:31,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834468008] [2021-11-23 13:26:31,447 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:26:31,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518247329] [2021-11-23 13:26:31,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518247329] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:26:31,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:26:31,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:26:31,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766468139] [2021-11-23 13:26:31,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:26:31,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:26:31,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:26:31,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:26:31,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:26:31,451 INFO L87 Difference]: Start difference. First operand 2335 states and 2992 transitions. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:33,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:26:33,588 INFO L93 Difference]: Finished difference Result 4499 states and 5768 transitions. [2021-11-23 13:26:33,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:26:33,589 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-23 13:26:33,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:26:33,606 INFO L225 Difference]: With dead ends: 4499 [2021-11-23 13:26:33,606 INFO L226 Difference]: Without dead ends: 2335 [2021-11-23 13:26:33,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:26:33,612 INFO L933 BasicCegarLoop]: 2821 mSDtfsCounter, 8752 mSDsluCounter, 2262 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8752 SdHoareTripleChecker+Valid, 5083 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-23 13:26:33,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8752 Valid, 5083 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-23 13:26:33,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2335 states. [2021-11-23 13:26:33,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2335 to 2335. [2021-11-23 13:26:33,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2335 states, 2272 states have (on average 1.315580985915493) internal successors, (2989), 2334 states have internal predecessors, (2989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:33,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2335 states to 2335 states and 2989 transitions. [2021-11-23 13:26:33,787 INFO L78 Accepts]: Start accepts. Automaton has 2335 states and 2989 transitions. Word has length 128 [2021-11-23 13:26:33,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:26:33,789 INFO L470 AbstractCegarLoop]: Abstraction has 2335 states and 2989 transitions. [2021-11-23 13:26:33,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:33,790 INFO L276 IsEmpty]: Start isEmpty. Operand 2335 states and 2989 transitions. [2021-11-23 13:26:33,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-23 13:26:33,792 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:26:33,792 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:26:33,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 13:26:34,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:26:34,006 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-23 13:26:34,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:26:34,007 INFO L85 PathProgramCache]: Analyzing trace with hash -451771305, now seen corresponding path program 1 times [2021-11-23 13:26:34,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:26:34,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133821248] [2021-11-23 13:26:34,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:26:34,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:26:34,102 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:26:34,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1089401809] [2021-11-23 13:26:34,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:26:34,103 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:26:34,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:26:34,104 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:26:34,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 13:26:34,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:26:34,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 2720 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 13:26:34,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:26:35,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:26:35,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:26:35,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:26:35,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133821248] [2021-11-23 13:26:35,339 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:26:35,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089401809] [2021-11-23 13:26:35,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089401809] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:26:35,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:26:35,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 13:26:35,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923384873] [2021-11-23 13:26:35,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:26:35,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:26:35,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:26:35,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:26:35,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:26:35,343 INFO L87 Difference]: Start difference. First operand 2335 states and 2989 transitions. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 7 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:37,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:26:37,526 INFO L93 Difference]: Finished difference Result 4833 states and 6199 transitions. [2021-11-23 13:26:37,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 13:26:37,526 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 7 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2021-11-23 13:26:37,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:26:37,547 INFO L225 Difference]: With dead ends: 4833 [2021-11-23 13:26:37,547 INFO L226 Difference]: Without dead ends: 2693 [2021-11-23 13:26:37,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-11-23 13:26:37,553 INFO L933 BasicCegarLoop]: 2752 mSDtfsCounter, 15148 mSDsluCounter, 3991 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15148 SdHoareTripleChecker+Valid, 6743 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-23 13:26:37,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15148 Valid, 6743 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-23 13:26:37,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2693 states. [2021-11-23 13:26:37,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2693 to 2335. [2021-11-23 13:26:37,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2335 states, 2272 states have (on average 1.3116197183098592) internal successors, (2980), 2334 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:37,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2335 states to 2335 states and 2980 transitions. [2021-11-23 13:26:37,755 INFO L78 Accepts]: Start accepts. Automaton has 2335 states and 2980 transitions. Word has length 136 [2021-11-23 13:26:37,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:26:37,755 INFO L470 AbstractCegarLoop]: Abstraction has 2335 states and 2980 transitions. [2021-11-23 13:26:37,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 7 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:37,756 INFO L276 IsEmpty]: Start isEmpty. Operand 2335 states and 2980 transitions. [2021-11-23 13:26:37,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-23 13:26:37,759 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:26:37,759 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:26:37,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 13:26:37,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:26:37,974 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-23 13:26:37,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:26:37,974 INFO L85 PathProgramCache]: Analyzing trace with hash 957929247, now seen corresponding path program 1 times [2021-11-23 13:26:37,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:26:37,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185996285] [2021-11-23 13:26:37,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:26:37,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:26:38,060 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:26:38,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1160232387] [2021-11-23 13:26:38,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:26:38,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:26:38,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:26:38,063 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:26:38,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 13:26:38,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:26:38,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 2902 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-23 13:26:38,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:26:39,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:26:39,284 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:26:39,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:26:39,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185996285] [2021-11-23 13:26:39,285 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:26:39,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160232387] [2021-11-23 13:26:39,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160232387] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:26:39,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:26:39,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 13:26:39,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774389745] [2021-11-23 13:26:39,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:26:39,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:26:39,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:26:39,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:26:39,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:26:39,288 INFO L87 Difference]: Start difference. First operand 2335 states and 2980 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:40,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:26:40,021 INFO L93 Difference]: Finished difference Result 11267 states and 14394 transitions. [2021-11-23 13:26:40,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 13:26:40,022 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2021-11-23 13:26:40,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:26:40,104 INFO L225 Difference]: With dead ends: 11267 [2021-11-23 13:26:40,104 INFO L226 Difference]: Without dead ends: 9032 [2021-11-23 13:26:40,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-23 13:26:40,115 INFO L933 BasicCegarLoop]: 2947 mSDtfsCounter, 11303 mSDsluCounter, 11769 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11303 SdHoareTripleChecker+Valid, 14716 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:26:40,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11303 Valid, 14716 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:26:40,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9032 states. [2021-11-23 13:26:40,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9032 to 2345. [2021-11-23 13:26:40,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2345 states, 2282 states have (on average 1.310692375109553) internal successors, (2991), 2344 states have internal predecessors, (2991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:40,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2345 states to 2345 states and 2991 transitions. [2021-11-23 13:26:40,391 INFO L78 Accepts]: Start accepts. Automaton has 2345 states and 2991 transitions. Word has length 152 [2021-11-23 13:26:40,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:26:40,392 INFO L470 AbstractCegarLoop]: Abstraction has 2345 states and 2991 transitions. [2021-11-23 13:26:40,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:40,392 INFO L276 IsEmpty]: Start isEmpty. Operand 2345 states and 2991 transitions. [2021-11-23 13:26:40,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-23 13:26:40,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:26:40,395 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:26:40,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-23 13:26:40,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:26:40,609 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-23 13:26:40,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:26:40,610 INFO L85 PathProgramCache]: Analyzing trace with hash -36764451, now seen corresponding path program 1 times [2021-11-23 13:26:40,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:26:40,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749888202] [2021-11-23 13:26:40,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:26:40,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:26:40,754 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:26:40,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1941226337] [2021-11-23 13:26:40,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:26:40,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:26:40,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:26:40,758 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:26:40,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 13:26:41,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:26:41,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 2899 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 13:26:41,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:26:42,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:26:42,018 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:26:42,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:26:42,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749888202] [2021-11-23 13:26:42,019 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:26:42,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941226337] [2021-11-23 13:26:42,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941226337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:26:42,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:26:42,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 13:26:42,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497611886] [2021-11-23 13:26:42,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:26:42,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:26:42,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:26:42,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:26:42,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:26:42,023 INFO L87 Difference]: Start difference. First operand 2345 states and 2991 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:42,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:26:42,422 INFO L93 Difference]: Finished difference Result 6763 states and 8635 transitions. [2021-11-23 13:26:42,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:26:42,423 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2021-11-23 13:26:42,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:26:42,438 INFO L225 Difference]: With dead ends: 6763 [2021-11-23 13:26:42,438 INFO L226 Difference]: Without dead ends: 4583 [2021-11-23 13:26:42,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:26:42,445 INFO L933 BasicCegarLoop]: 2952 mSDtfsCounter, 5641 mSDsluCounter, 11808 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5641 SdHoareTripleChecker+Valid, 14760 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:26:42,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5641 Valid, 14760 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:26:42,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4583 states. [2021-11-23 13:26:42,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4583 to 2400. [2021-11-23 13:26:42,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2400 states, 2337 states have (on average 1.3097988874625588) internal successors, (3061), 2399 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:42,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2400 states to 2400 states and 3061 transitions. [2021-11-23 13:26:42,665 INFO L78 Accepts]: Start accepts. Automaton has 2400 states and 3061 transitions. Word has length 152 [2021-11-23 13:26:42,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:26:42,666 INFO L470 AbstractCegarLoop]: Abstraction has 2400 states and 3061 transitions. [2021-11-23 13:26:42,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:42,666 INFO L276 IsEmpty]: Start isEmpty. Operand 2400 states and 3061 transitions. [2021-11-23 13:26:42,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-23 13:26:42,669 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:26:42,669 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:26:42,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-23 13:26:42,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-23 13:26:42,898 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-23 13:26:42,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:26:42,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1902397595, now seen corresponding path program 1 times [2021-11-23 13:26:42,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:26:42,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35252517] [2021-11-23 13:26:42,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:26:42,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:26:42,982 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:26:42,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [755009541] [2021-11-23 13:26:42,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:26:42,983 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:26:42,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:26:42,984 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:26:43,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 13:26:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:26:43,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 2896 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 13:26:43,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:26:44,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:26:44,259 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:26:44,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:26:44,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35252517] [2021-11-23 13:26:44,259 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:26:44,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755009541] [2021-11-23 13:26:44,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755009541] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:26:44,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:26:44,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 13:26:44,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866363272] [2021-11-23 13:26:44,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:26:44,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:26:44,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:26:44,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:26:44,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:26:44,265 INFO L87 Difference]: Start difference. First operand 2400 states and 3061 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:44,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:26:44,737 INFO L93 Difference]: Finished difference Result 6743 states and 8609 transitions. [2021-11-23 13:26:44,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:26:44,738 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2021-11-23 13:26:44,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:26:44,749 INFO L225 Difference]: With dead ends: 6743 [2021-11-23 13:26:44,749 INFO L226 Difference]: Without dead ends: 4583 [2021-11-23 13:26:44,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:26:44,756 INFO L933 BasicCegarLoop]: 2952 mSDtfsCounter, 5529 mSDsluCounter, 11810 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5529 SdHoareTripleChecker+Valid, 14762 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:26:44,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5529 Valid, 14762 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:26:44,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4583 states. [2021-11-23 13:26:45,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4583 to 2420. [2021-11-23 13:26:45,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2420 states, 2357 states have (on average 1.308867204072974) internal successors, (3085), 2419 states have internal predecessors, (3085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:45,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2420 states to 2420 states and 3085 transitions. [2021-11-23 13:26:45,016 INFO L78 Accepts]: Start accepts. Automaton has 2420 states and 3085 transitions. Word has length 152 [2021-11-23 13:26:45,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:26:45,016 INFO L470 AbstractCegarLoop]: Abstraction has 2420 states and 3085 transitions. [2021-11-23 13:26:45,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:45,017 INFO L276 IsEmpty]: Start isEmpty. Operand 2420 states and 3085 transitions. [2021-11-23 13:26:45,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-23 13:26:45,019 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:26:45,020 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:26:45,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-23 13:26:45,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-23 13:26:45,238 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-23 13:26:45,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:26:45,239 INFO L85 PathProgramCache]: Analyzing trace with hash -2117810087, now seen corresponding path program 1 times [2021-11-23 13:26:45,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:26:45,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705357319] [2021-11-23 13:26:45,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:26:45,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:26:45,344 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:26:45,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [118017751] [2021-11-23 13:26:45,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:26:45,345 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:26:45,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:26:45,347 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:26:45,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-23 13:26:46,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:26:46,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 2893 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-23 13:26:46,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:26:46,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:26:46,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:26:46,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:26:46,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705357319] [2021-11-23 13:26:46,357 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:26:46,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118017751] [2021-11-23 13:26:46,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118017751] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:26:46,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:26:46,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:26:46,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786562765] [2021-11-23 13:26:46,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:26:46,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:26:46,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:26:46,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:26:46,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:26:46,361 INFO L87 Difference]: Start difference. First operand 2420 states and 3085 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:46,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:26:46,865 INFO L93 Difference]: Finished difference Result 4600 states and 5869 transitions. [2021-11-23 13:26:46,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:26:46,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2021-11-23 13:26:46,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:26:46,873 INFO L225 Difference]: With dead ends: 4600 [2021-11-23 13:26:46,873 INFO L226 Difference]: Without dead ends: 2355 [2021-11-23 13:26:46,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:26:46,879 INFO L933 BasicCegarLoop]: 2959 mSDtfsCounter, 1 mSDsluCounter, 5688 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 8647 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:26:46,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 8647 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 13:26:46,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2355 states. [2021-11-23 13:26:47,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2355 to 2355. [2021-11-23 13:26:47,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2355 states, 2292 states have (on average 1.3097731239092496) internal successors, (3002), 2354 states have internal predecessors, (3002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:47,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 3002 transitions. [2021-11-23 13:26:47,084 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 3002 transitions. Word has length 152 [2021-11-23 13:26:47,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:26:47,084 INFO L470 AbstractCegarLoop]: Abstraction has 2355 states and 3002 transitions. [2021-11-23 13:26:47,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:47,085 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 3002 transitions. [2021-11-23 13:26:47,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-23 13:26:47,087 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:26:47,088 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:26:47,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-23 13:26:47,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:26:47,310 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-23 13:26:47,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:26:47,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1484791415, now seen corresponding path program 1 times [2021-11-23 13:26:47,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:26:47,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625510585] [2021-11-23 13:26:47,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:26:47,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:26:47,399 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:26:47,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [888034150] [2021-11-23 13:26:47,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:26:47,400 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:26:47,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:26:47,402 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:26:47,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-23 13:26:48,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:26:48,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 2924 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-23 13:26:48,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:26:48,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:26:48,622 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:26:48,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:26:48,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625510585] [2021-11-23 13:26:48,623 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:26:48,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888034150] [2021-11-23 13:26:48,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888034150] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:26:48,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:26:48,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:26:48,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523630074] [2021-11-23 13:26:48,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:26:48,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:26:48,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:26:48,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:26:48,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:26:48,626 INFO L87 Difference]: Start difference. First operand 2355 states and 3002 transitions. Second operand has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:49,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:26:49,309 INFO L93 Difference]: Finished difference Result 6756 states and 8592 transitions. [2021-11-23 13:26:49,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:26:49,310 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-11-23 13:26:49,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:26:49,319 INFO L225 Difference]: With dead ends: 6756 [2021-11-23 13:26:49,319 INFO L226 Difference]: Without dead ends: 4481 [2021-11-23 13:26:49,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:26:49,327 INFO L933 BasicCegarLoop]: 5548 mSDtfsCounter, 2680 mSDsluCounter, 13766 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2680 SdHoareTripleChecker+Valid, 19314 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:26:49,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2680 Valid, 19314 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 13:26:49,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4481 states. [2021-11-23 13:26:49,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4481 to 2435. [2021-11-23 13:26:49,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2435 states, 2372 states have (on average 1.3077571669477235) internal successors, (3102), 2434 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:49,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2435 states to 2435 states and 3102 transitions. [2021-11-23 13:26:49,533 INFO L78 Accepts]: Start accepts. Automaton has 2435 states and 3102 transitions. Word has length 155 [2021-11-23 13:26:49,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:26:49,533 INFO L470 AbstractCegarLoop]: Abstraction has 2435 states and 3102 transitions. [2021-11-23 13:26:49,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:49,534 INFO L276 IsEmpty]: Start isEmpty. Operand 2435 states and 3102 transitions. [2021-11-23 13:26:49,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-23 13:26:49,536 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:26:49,537 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:26:49,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-23 13:26:49,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-23 13:26:49,758 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-23 13:26:49,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:26:49,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1162812939, now seen corresponding path program 1 times [2021-11-23 13:26:49,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:26:49,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141851136] [2021-11-23 13:26:49,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:26:49,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:26:49,835 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:26:49,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1448677574] [2021-11-23 13:26:49,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:26:49,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:26:49,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:26:49,837 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:26:49,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-23 13:26:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:26:50,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 2929 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 13:26:50,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:26:50,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:26:50,942 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:26:50,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:26:50,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141851136] [2021-11-23 13:26:50,943 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:26:50,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448677574] [2021-11-23 13:26:50,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448677574] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:26:50,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:26:50,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 13:26:50,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591048489] [2021-11-23 13:26:50,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:26:50,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:26:50,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:26:50,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:26:50,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:26:50,945 INFO L87 Difference]: Start difference. First operand 2435 states and 3102 transitions. Second operand has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:59,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:26:59,529 INFO L93 Difference]: Finished difference Result 6814 states and 8654 transitions. [2021-11-23 13:26:59,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 13:26:59,531 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-11-23 13:26:59,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:26:59,540 INFO L225 Difference]: With dead ends: 6814 [2021-11-23 13:26:59,541 INFO L226 Difference]: Without dead ends: 4458 [2021-11-23 13:26:59,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:26:59,546 INFO L933 BasicCegarLoop]: 4737 mSDtfsCounter, 2411 mSDsluCounter, 15161 mSDsCounter, 0 mSdLazyCounter, 4288 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2411 SdHoareTripleChecker+Valid, 19898 SdHoareTripleChecker+Invalid, 4363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 4288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-11-23 13:26:59,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2411 Valid, 19898 Invalid, 4363 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [75 Valid, 4288 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2021-11-23 13:26:59,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4458 states. [2021-11-23 13:26:59,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4458 to 2475. [2021-11-23 13:26:59,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2475 states, 2412 states have (on average 1.306799336650083) internal successors, (3152), 2474 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:59,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2475 states to 2475 states and 3152 transitions. [2021-11-23 13:26:59,778 INFO L78 Accepts]: Start accepts. Automaton has 2475 states and 3152 transitions. Word has length 155 [2021-11-23 13:26:59,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:26:59,779 INFO L470 AbstractCegarLoop]: Abstraction has 2475 states and 3152 transitions. [2021-11-23 13:26:59,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:26:59,779 INFO L276 IsEmpty]: Start isEmpty. Operand 2475 states and 3152 transitions. [2021-11-23 13:26:59,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-23 13:26:59,782 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:26:59,782 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:26:59,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-23 13:27:00,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-23 13:27:00,010 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-23 13:27:00,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:27:00,011 INFO L85 PathProgramCache]: Analyzing trace with hash -48290695, now seen corresponding path program 1 times [2021-11-23 13:27:00,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:27:00,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872942111] [2021-11-23 13:27:00,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:27:00,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:27:00,108 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:27:00,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1250720676] [2021-11-23 13:27:00,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:27:00,109 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:27:00,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:27:00,110 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:27:00,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-23 13:27:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:27:00,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 2921 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-23 13:27:00,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:27:01,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:27:01,324 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:27:01,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:27:01,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872942111] [2021-11-23 13:27:01,325 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:27:01,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250720676] [2021-11-23 13:27:01,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250720676] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:27:01,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:27:01,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 13:27:01,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708102940] [2021-11-23 13:27:01,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:27:01,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 13:27:01,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:27:01,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 13:27:01,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:27:01,328 INFO L87 Difference]: Start difference. First operand 2475 states and 3152 transitions. Second operand has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:27:16,511 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 13:27:19,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:27:19,763 INFO L93 Difference]: Finished difference Result 8735 states and 11041 transitions. [2021-11-23 13:27:19,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-23 13:27:19,764 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-11-23 13:27:19,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:27:19,784 INFO L225 Difference]: With dead ends: 8735 [2021-11-23 13:27:19,785 INFO L226 Difference]: Without dead ends: 6337 [2021-11-23 13:27:19,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=180, Invalid=470, Unknown=0, NotChecked=0, Total=650 [2021-11-23 13:27:19,790 INFO L933 BasicCegarLoop]: 4750 mSDtfsCounter, 13760 mSDsluCounter, 22040 mSDsCounter, 0 mSdLazyCounter, 6083 mSolverCounterSat, 127 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13760 SdHoareTripleChecker+Valid, 26790 SdHoareTripleChecker+Invalid, 6211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 6083 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:27:19,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13760 Valid, 26790 Invalid, 6211 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [127 Valid, 6083 Invalid, 1 Unknown, 0 Unchecked, 17.3s Time] [2021-11-23 13:27:19,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6337 states. [2021-11-23 13:27:20,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6337 to 2456. [2021-11-23 13:27:20,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2456 states, 2393 states have (on average 1.3004596740493104) internal successors, (3112), 2455 states have internal predecessors, (3112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:27:20,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2456 states to 2456 states and 3112 transitions. [2021-11-23 13:27:20,057 INFO L78 Accepts]: Start accepts. Automaton has 2456 states and 3112 transitions. Word has length 155 [2021-11-23 13:27:20,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:27:20,058 INFO L470 AbstractCegarLoop]: Abstraction has 2456 states and 3112 transitions. [2021-11-23 13:27:20,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:27:20,058 INFO L276 IsEmpty]: Start isEmpty. Operand 2456 states and 3112 transitions. [2021-11-23 13:27:20,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-23 13:27:20,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:27:20,060 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:27:20,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-23 13:27:20,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:27:20,286 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-23 13:27:20,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:27:20,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1188047161, now seen corresponding path program 1 times [2021-11-23 13:27:20,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:27:20,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699317775] [2021-11-23 13:27:20,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:27:20,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:27:20,360 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:27:20,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1700940674] [2021-11-23 13:27:20,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:27:20,361 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:27:20,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:27:20,366 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:27:20,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-23 13:27:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:27:21,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 2911 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:27:21,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:27:21,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:27:21,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:27:21,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:27:21,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699317775] [2021-11-23 13:27:21,367 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:27:21,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700940674] [2021-11-23 13:27:21,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700940674] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:27:21,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:27:21,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:27:21,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346114395] [2021-11-23 13:27:21,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:27:21,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:27:21,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:27:21,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:27:21,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:27:21,370 INFO L87 Difference]: Start difference. First operand 2456 states and 3112 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:27:25,304 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 13:27:25,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:27:25,892 INFO L93 Difference]: Finished difference Result 5315 states and 6797 transitions. [2021-11-23 13:27:25,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:27:25,893 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-11-23 13:27:25,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:27:25,897 INFO L225 Difference]: With dead ends: 5315 [2021-11-23 13:27:25,897 INFO L226 Difference]: Without dead ends: 2906 [2021-11-23 13:27:25,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:27:25,901 INFO L933 BasicCegarLoop]: 3261 mSDtfsCounter, 683 mSDsluCounter, 4628 mSDsCounter, 0 mSdLazyCounter, 1366 mSolverCounterSat, 365 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 7889 SdHoareTripleChecker+Invalid, 1732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 1366 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:27:25,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [683 Valid, 7889 Invalid, 1732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 1366 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2021-11-23 13:27:25,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2021-11-23 13:27:26,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 2636. [2021-11-23 13:27:26,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2636 states, 2573 states have (on average 1.278274387874077) internal successors, (3289), 2635 states have internal predecessors, (3289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:27:26,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2636 states to 2636 states and 3289 transitions. [2021-11-23 13:27:26,088 INFO L78 Accepts]: Start accepts. Automaton has 2636 states and 3289 transitions. Word has length 155 [2021-11-23 13:27:26,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:27:26,089 INFO L470 AbstractCegarLoop]: Abstraction has 2636 states and 3289 transitions. [2021-11-23 13:27:26,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:27:26,089 INFO L276 IsEmpty]: Start isEmpty. Operand 2636 states and 3289 transitions. [2021-11-23 13:27:26,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-23 13:27:26,091 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:27:26,091 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:27:26,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-23 13:27:26,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:27:26,318 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-23 13:27:26,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:27:26,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1834788007, now seen corresponding path program 1 times [2021-11-23 13:27:26,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:27:26,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201444101] [2021-11-23 13:27:26,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:27:26,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:27:26,387 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:27:26,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2043549807] [2021-11-23 13:27:26,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:27:26,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:27:26,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:27:26,389 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:27:26,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-23 13:27:27,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:27:27,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 2921 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 13:27:27,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:27:27,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:27:27,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:27:27,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:27:27,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201444101] [2021-11-23 13:27:27,447 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:27:27,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043549807] [2021-11-23 13:27:27,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043549807] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:27:27,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:27:27,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:27:27,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017474803] [2021-11-23 13:27:27,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:27:27,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:27:27,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:27:27,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:27:27,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:27:27,451 INFO L87 Difference]: Start difference. First operand 2636 states and 3289 transitions. Second operand has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:27:36,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:27:36,602 INFO L93 Difference]: Finished difference Result 6644 states and 8212 transitions. [2021-11-23 13:27:36,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:27:36,604 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2021-11-23 13:27:36,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:27:36,611 INFO L225 Difference]: With dead ends: 6644 [2021-11-23 13:27:36,611 INFO L226 Difference]: Without dead ends: 4056 [2021-11-23 13:27:36,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:27:36,618 INFO L933 BasicCegarLoop]: 3906 mSDtfsCounter, 1801 mSDsluCounter, 8007 mSDsCounter, 0 mSdLazyCounter, 4227 mSolverCounterSat, 640 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1801 SdHoareTripleChecker+Valid, 11913 SdHoareTripleChecker+Invalid, 4867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 640 IncrementalHoareTripleChecker+Valid, 4227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2021-11-23 13:27:36,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1801 Valid, 11913 Invalid, 4867 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [640 Valid, 4227 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2021-11-23 13:27:36,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4056 states. [2021-11-23 13:27:36,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4056 to 2726. [2021-11-23 13:27:36,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2726 states, 2663 states have (on average 1.267743146826887) internal successors, (3376), 2725 states have internal predecessors, (3376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:27:36,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2726 states to 2726 states and 3376 transitions. [2021-11-23 13:27:36,809 INFO L78 Accepts]: Start accepts. Automaton has 2726 states and 3376 transitions. Word has length 159 [2021-11-23 13:27:36,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:27:36,810 INFO L470 AbstractCegarLoop]: Abstraction has 2726 states and 3376 transitions. [2021-11-23 13:27:36,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:27:36,810 INFO L276 IsEmpty]: Start isEmpty. Operand 2726 states and 3376 transitions. [2021-11-23 13:27:36,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-23 13:27:36,812 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:27:36,812 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:27:36,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-11-23 13:27:37,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-23 13:27:37,038 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-23 13:27:37,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:27:37,039 INFO L85 PathProgramCache]: Analyzing trace with hash 446039577, now seen corresponding path program 1 times [2021-11-23 13:27:37,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:27:37,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812948370] [2021-11-23 13:27:37,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:27:37,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:27:37,107 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:27:37,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [590103216] [2021-11-23 13:27:37,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:27:37,110 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:27:37,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:27:37,111 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:27:37,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-23 13:27:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:27:38,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 2931 conjuncts, 143 conjunts are in the unsatisfiable core [2021-11-23 13:27:38,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:27:38,112 INFO L388 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 [2021-11-23 13:27:38,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:27:38,927 INFO L388 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 23 treesize of output 22 [2021-11-23 13:27:38,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:27:38,941 INFO L388 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 23 treesize of output 22 [2021-11-23 13:27:38,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:27:38,957 INFO L388 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 31 treesize of output 15 [2021-11-23 13:27:39,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:27:39,074 INFO L388 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 21 treesize of output 20 [2021-11-23 13:27:39,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:27:39,087 INFO L388 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 27 treesize of output 15 [2021-11-23 13:27:39,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:27:39,105 INFO L388 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 21 treesize of output 20 [2021-11-23 13:27:39,362 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 13:27:39,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-23 13:27:39,532 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-23 13:27:39,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 84 [2021-11-23 13:27:39,576 INFO L354 Elim1Store]: treesize reduction 56, result has 21.1 percent of original size [2021-11-23 13:27:39,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 81 treesize of output 72 [2021-11-23 13:27:39,617 INFO L354 Elim1Store]: treesize reduction 56, result has 21.1 percent of original size [2021-11-23 13:27:39,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 57 [2021-11-23 13:27:42,491 INFO L388 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 81 treesize of output 80 [2021-11-23 13:27:42,518 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-23 13:27:42,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 72 [2021-11-23 13:27:42,548 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-23 13:27:42,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 61 [2021-11-23 13:27:45,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:27:45,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:27:45,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:27:45,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812948370] [2021-11-23 13:27:45,937 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:27:45,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590103216] [2021-11-23 13:27:45,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590103216] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:27:45,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:27:45,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-23 13:27:45,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154578802] [2021-11-23 13:27:45,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:27:45,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-23 13:27:45,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:27:45,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-23 13:27:45,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=359, Unknown=2, NotChecked=0, Total=420 [2021-11-23 13:27:45,939 INFO L87 Difference]: Start difference. First operand 2726 states and 3376 transitions. Second operand has 21 states, 21 states have (on average 7.571428571428571) internal successors, (159), 21 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:28:08,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:28:08,153 INFO L93 Difference]: Finished difference Result 5626 states and 6953 transitions. [2021-11-23 13:28:08,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-23 13:28:08,154 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.571428571428571) internal successors, (159), 21 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2021-11-23 13:28:08,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:28:08,157 INFO L225 Difference]: With dead ends: 5626 [2021-11-23 13:28:08,157 INFO L226 Difference]: Without dead ends: 2975 [2021-11-23 13:28:08,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=208, Invalid=1196, Unknown=2, NotChecked=0, Total=1406 [2021-11-23 13:28:08,161 INFO L933 BasicCegarLoop]: 3020 mSDtfsCounter, 516 mSDsluCounter, 28353 mSDsCounter, 0 mSdLazyCounter, 11770 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 31373 SdHoareTripleChecker+Invalid, 11825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 11770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2021-11-23 13:28:08,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [516 Valid, 31373 Invalid, 11825 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 11770 Invalid, 0 Unknown, 0 Unchecked, 20.5s Time] [2021-11-23 13:28:08,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2021-11-23 13:28:08,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 2765. [2021-11-23 13:28:08,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2765 states, 2702 states have (on average 1.266839378238342) internal successors, (3423), 2764 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:28:08,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2765 states to 2765 states and 3423 transitions. [2021-11-23 13:28:08,372 INFO L78 Accepts]: Start accepts. Automaton has 2765 states and 3423 transitions. Word has length 159 [2021-11-23 13:28:08,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:28:08,372 INFO L470 AbstractCegarLoop]: Abstraction has 2765 states and 3423 transitions. [2021-11-23 13:28:08,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.571428571428571) internal successors, (159), 21 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:28:08,373 INFO L276 IsEmpty]: Start isEmpty. Operand 2765 states and 3423 transitions. [2021-11-23 13:28:08,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-23 13:28:08,374 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:28:08,375 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:28:08,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-23 13:28:08,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-23 13:28:08,576 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-23 13:28:08,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:28:08,576 INFO L85 PathProgramCache]: Analyzing trace with hash 562446205, now seen corresponding path program 1 times [2021-11-23 13:28:08,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:28:08,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140022592] [2021-11-23 13:28:08,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:28:08,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:28:08,649 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:28:08,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [615229552] [2021-11-23 13:28:08,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:28:08,650 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:28:08,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:28:08,651 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:28:08,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-23 13:28:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:28:09,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 2953 conjuncts, 205 conjunts are in the unsatisfiable core [2021-11-23 13:28:09,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:28:09,692 INFO L388 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 [2021-11-23 13:28:10,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:28:10,251 INFO L388 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 23 treesize of output 22 [2021-11-23 13:28:10,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:28:10,268 INFO L388 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 23 treesize of output 22 [2021-11-23 13:28:10,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:28:10,355 INFO L388 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 21 treesize of output 20 [2021-11-23 13:28:10,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:28:10,367 INFO L388 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 21 treesize of output 20 [2021-11-23 13:28:10,545 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 13:28:10,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-23 13:28:10,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:28:10,689 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-23 13:28:10,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 67 treesize of output 58 [2021-11-23 13:28:10,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:28:10,724 INFO L354 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2021-11-23 13:28:10,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 43 [2021-11-23 13:28:11,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:28:11,306 INFO L354 Elim1Store]: treesize reduction 44, result has 44.3 percent of original size [2021-11-23 13:28:11,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 63 treesize of output 72 [2021-11-23 13:28:11,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:28:11,359 INFO L354 Elim1Store]: treesize reduction 44, result has 44.3 percent of original size [2021-11-23 13:28:11,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 75 [2021-11-23 13:28:13,956 INFO L388 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 67 treesize of output 66 [2021-11-23 13:28:13,965 INFO L388 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 56 treesize of output 55 [2021-11-23 13:28:13,971 INFO L388 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 45 treesize of output 44 [2021-11-23 13:28:13,975 INFO L388 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 32 [2021-11-23 13:28:14,191 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 13:28:14,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-23 13:28:14,320 INFO L388 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 67 treesize of output 66 [2021-11-23 13:28:14,327 INFO L388 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 63 treesize of output 51 [2021-11-23 13:28:14,333 INFO L388 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 48 treesize of output 36 [2021-11-23 13:28:15,157 INFO L388 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 67 treesize of output 66 [2021-11-23 13:28:15,165 INFO L388 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 63 treesize of output 51 [2021-11-23 13:28:15,174 INFO L388 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 48 treesize of output 36 [2021-11-23 13:28:15,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:28:15,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2021-11-23 13:28:15,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:28:15,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:28:15,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:28:15,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140022592] [2021-11-23 13:28:15,871 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:28:15,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615229552] [2021-11-23 13:28:15,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615229552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:28:15,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:28:15,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-11-23 13:28:15,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072744322] [2021-11-23 13:28:15,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:28:15,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-23 13:28:15,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:28:15,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-23 13:28:15,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=893, Unknown=0, NotChecked=0, Total=992 [2021-11-23 13:28:15,874 INFO L87 Difference]: Start difference. First operand 2765 states and 3423 transitions. Second operand has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:29:08,792 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 13:29:11,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:29:11,064 INFO L93 Difference]: Finished difference Result 8032 states and 9898 transitions. [2021-11-23 13:29:11,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-23 13:29:11,066 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-11-23 13:29:11,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:29:11,072 INFO L225 Difference]: With dead ends: 8032 [2021-11-23 13:29:11,072 INFO L226 Difference]: Without dead ends: 5377 [2021-11-23 13:29:11,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=397, Invalid=3143, Unknown=0, NotChecked=0, Total=3540 [2021-11-23 13:29:11,077 INFO L933 BasicCegarLoop]: 4572 mSDtfsCounter, 6401 mSDsluCounter, 55286 mSDsCounter, 0 mSdLazyCounter, 23049 mSolverCounterSat, 367 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6401 SdHoareTripleChecker+Valid, 59858 SdHoareTripleChecker+Invalid, 23879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 23049 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 462 IncrementalHoareTripleChecker+Unchecked, 50.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:29:11,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6401 Valid, 59858 Invalid, 23879 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [367 Valid, 23049 Invalid, 1 Unknown, 462 Unchecked, 50.3s Time] [2021-11-23 13:29:11,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5377 states. [2021-11-23 13:29:11,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5377 to 2841. [2021-11-23 13:29:11,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2841 states, 2778 states have (on average 1.2642188624910007) internal successors, (3512), 2840 states have internal predecessors, (3512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:29:11,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2841 states to 2841 states and 3512 transitions. [2021-11-23 13:29:11,349 INFO L78 Accepts]: Start accepts. Automaton has 2841 states and 3512 transitions. Word has length 160 [2021-11-23 13:29:11,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:29:11,350 INFO L470 AbstractCegarLoop]: Abstraction has 2841 states and 3512 transitions. [2021-11-23 13:29:11,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.0) internal successors, (160), 32 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:29:11,350 INFO L276 IsEmpty]: Start isEmpty. Operand 2841 states and 3512 transitions. [2021-11-23 13:29:11,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-23 13:29:11,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:29:11,351 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:29:11,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-23 13:29:11,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:29:11,553 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-23 13:29:11,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:29:11,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1280029509, now seen corresponding path program 1 times [2021-11-23 13:29:11,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:29:11,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722568182] [2021-11-23 13:29:11,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:29:11,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:29:11,621 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:29:11,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1977872267] [2021-11-23 13:29:11,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:29:11,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:29:11,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:29:11,624 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:29:11,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-23 13:29:12,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:29:12,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 2950 conjuncts, 154 conjunts are in the unsatisfiable core [2021-11-23 13:29:12,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:29:14,810 INFO L388 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 67 treesize of output 66 [2021-11-23 13:29:14,816 INFO L388 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 56 treesize of output 55 [2021-11-23 13:29:14,821 INFO L388 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 45 treesize of output 44 [2021-11-23 13:29:14,830 INFO L388 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 32 [2021-11-23 13:29:15,013 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 13:29:15,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-23 13:29:15,161 INFO L388 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 67 treesize of output 66 [2021-11-23 13:29:15,172 INFO L388 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 63 treesize of output 51 [2021-11-23 13:29:15,178 INFO L388 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 48 treesize of output 36 [2021-11-23 13:29:20,300 INFO L388 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 67 treesize of output 66 [2021-11-23 13:29:20,307 INFO L388 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 63 treesize of output 51 [2021-11-23 13:29:20,313 INFO L388 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 48 treesize of output 36 [2021-11-23 13:29:20,687 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:29:20,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2021-11-23 13:29:20,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:29:20,955 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:29:20,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:29:20,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722568182] [2021-11-23 13:29:20,956 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:29:20,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977872267] [2021-11-23 13:29:20,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977872267] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:29:20,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:29:20,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-23 13:29:20,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245659482] [2021-11-23 13:29:20,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:29:20,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-23 13:29:20,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:29:20,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-23 13:29:20,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=292, Unknown=1, NotChecked=0, Total=342 [2021-11-23 13:29:20,958 INFO L87 Difference]: Start difference. First operand 2841 states and 3512 transitions. Second operand has 19 states, 19 states have (on average 8.421052631578947) internal successors, (160), 19 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:30:15,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:30:15,581 INFO L93 Difference]: Finished difference Result 8842 states and 10912 transitions. [2021-11-23 13:30:15,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-23 13:30:15,584 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.421052631578947) internal successors, (160), 19 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-11-23 13:30:15,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:30:15,592 INFO L225 Difference]: With dead ends: 8842 [2021-11-23 13:30:15,592 INFO L226 Difference]: Without dead ends: 6290 [2021-11-23 13:30:15,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 142 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=187, Invalid=803, Unknown=2, NotChecked=0, Total=992 [2021-11-23 13:30:15,597 INFO L933 BasicCegarLoop]: 4397 mSDtfsCounter, 8241 mSDsluCounter, 47677 mSDsCounter, 0 mSdLazyCounter, 14577 mSolverCounterSat, 576 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8241 SdHoareTripleChecker+Valid, 52074 SdHoareTripleChecker+Invalid, 17073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 576 IncrementalHoareTripleChecker+Valid, 14577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1920 IncrementalHoareTripleChecker+Unchecked, 44.8s IncrementalHoareTripleChecker+Time [2021-11-23 13:30:15,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8241 Valid, 52074 Invalid, 17073 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [576 Valid, 14577 Invalid, 0 Unknown, 1920 Unchecked, 44.8s Time] [2021-11-23 13:30:15,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6290 states. [2021-11-23 13:30:15,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6290 to 2912. [2021-11-23 13:30:15,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2912 states, 2849 states have (on average 1.2618462618462618) internal successors, (3595), 2911 states have internal predecessors, (3595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:30:15,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2912 states to 2912 states and 3595 transitions. [2021-11-23 13:30:15,947 INFO L78 Accepts]: Start accepts. Automaton has 2912 states and 3595 transitions. Word has length 160 [2021-11-23 13:30:15,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:30:15,948 INFO L470 AbstractCegarLoop]: Abstraction has 2912 states and 3595 transitions. [2021-11-23 13:30:15,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.421052631578947) internal successors, (160), 19 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:30:15,949 INFO L276 IsEmpty]: Start isEmpty. Operand 2912 states and 3595 transitions. [2021-11-23 13:30:15,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-23 13:30:15,952 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:30:15,952 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:30:16,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-23 13:30:16,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:30:16,174 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-23 13:30:16,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:30:16,174 INFO L85 PathProgramCache]: Analyzing trace with hash -36795248, now seen corresponding path program 1 times [2021-11-23 13:30:16,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:30:16,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942482202] [2021-11-23 13:30:16,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:30:16,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:30:16,255 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:30:16,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1052142487] [2021-11-23 13:30:16,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:30:16,256 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:30:16,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:30:16,258 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:30:16,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-23 13:30:16,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:30:16,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 2967 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 13:30:16,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:30:17,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:30:17,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:30:17,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:30:17,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942482202] [2021-11-23 13:30:17,504 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:30:17,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052142487] [2021-11-23 13:30:17,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052142487] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:30:17,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:30:17,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 13:30:17,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867372773] [2021-11-23 13:30:17,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:30:17,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:30:17,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:30:17,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:30:17,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:30:17,508 INFO L87 Difference]: Start difference. First operand 2912 states and 3595 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:30:43,650 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 13:30:44,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:30:44,056 INFO L93 Difference]: Finished difference Result 7911 states and 9762 transitions. [2021-11-23 13:30:44,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:30:44,060 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2021-11-23 13:30:44,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:30:44,066 INFO L225 Difference]: With dead ends: 7911 [2021-11-23 13:30:44,066 INFO L226 Difference]: Without dead ends: 5150 [2021-11-23 13:30:44,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:30:44,071 INFO L933 BasicCegarLoop]: 4782 mSDtfsCounter, 2360 mSDsluCounter, 15299 mSDsCounter, 0 mSdLazyCounter, 4257 mSolverCounterSat, 75 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2360 SdHoareTripleChecker+Valid, 20081 SdHoareTripleChecker+Invalid, 4333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 4257 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.7s IncrementalHoareTripleChecker+Time [2021-11-23 13:30:44,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2360 Valid, 20081 Invalid, 4333 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [75 Valid, 4257 Invalid, 1 Unknown, 0 Unchecked, 25.7s Time] [2021-11-23 13:30:44,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5150 states. [2021-11-23 13:30:44,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5150 to 2940. [2021-11-23 13:30:44,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2940 states, 2877 states have (on average 1.2589502954466458) internal successors, (3622), 2939 states have internal predecessors, (3622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:30:44,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2940 states to 2940 states and 3622 transitions. [2021-11-23 13:30:44,385 INFO L78 Accepts]: Start accepts. Automaton has 2940 states and 3622 transitions. Word has length 161 [2021-11-23 13:30:44,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:30:44,385 INFO L470 AbstractCegarLoop]: Abstraction has 2940 states and 3622 transitions. [2021-11-23 13:30:44,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:30:44,386 INFO L276 IsEmpty]: Start isEmpty. Operand 2940 states and 3622 transitions. [2021-11-23 13:30:44,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-23 13:30:44,388 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:30:44,388 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:30:44,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-23 13:30:44,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:30:44,589 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-23 13:30:44,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:30:44,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1735897612, now seen corresponding path program 1 times [2021-11-23 13:30:44,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:30:44,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355327506] [2021-11-23 13:30:44,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:30:44,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:30:44,650 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:30:44,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1062752681] [2021-11-23 13:30:44,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:30:44,651 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:30:44,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:30:44,652 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:30:44,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-23 13:30:46,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:30:46,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 2975 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 13:30:46,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:30:46,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:30:46,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:30:46,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:30:46,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355327506] [2021-11-23 13:30:46,699 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:30:46,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062752681] [2021-11-23 13:30:46,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062752681] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:30:46,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:30:46,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:30:46,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549261262] [2021-11-23 13:30:46,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:30:46,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:30:46,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:30:46,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:30:46,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:30:46,701 INFO L87 Difference]: Start difference. First operand 2940 states and 3622 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:30:47,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:30:47,560 INFO L93 Difference]: Finished difference Result 8454 states and 10426 transitions. [2021-11-23 13:30:47,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:30:47,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2021-11-23 13:30:47,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:30:47,570 INFO L225 Difference]: With dead ends: 8454 [2021-11-23 13:30:47,570 INFO L226 Difference]: Without dead ends: 5692 [2021-11-23 13:30:47,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:30:47,576 INFO L933 BasicCegarLoop]: 2924 mSDtfsCounter, 2799 mSDsluCounter, 2890 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2799 SdHoareTripleChecker+Valid, 5814 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:30:47,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2799 Valid, 5814 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 13:30:47,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5692 states. [2021-11-23 13:30:47,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5692 to 2959. [2021-11-23 13:30:47,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2959 states, 2896 states have (on average 1.2572513812154695) internal successors, (3641), 2958 states have internal predecessors, (3641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:30:47,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2959 states to 2959 states and 3641 transitions. [2021-11-23 13:30:47,881 INFO L78 Accepts]: Start accepts. Automaton has 2959 states and 3641 transitions. Word has length 161 [2021-11-23 13:30:47,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:30:47,881 INFO L470 AbstractCegarLoop]: Abstraction has 2959 states and 3641 transitions. [2021-11-23 13:30:47,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:30:47,882 INFO L276 IsEmpty]: Start isEmpty. Operand 2959 states and 3641 transitions. [2021-11-23 13:30:47,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-23 13:30:47,883 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:30:47,883 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:30:47,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-23 13:30:48,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:30:48,084 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-23 13:30:48,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:30:48,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1747581704, now seen corresponding path program 1 times [2021-11-23 13:30:48,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:30:48,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829661812] [2021-11-23 13:30:48,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:30:48,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:30:48,158 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:30:48,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [546581804] [2021-11-23 13:30:48,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:30:48,159 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:30:48,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:30:48,160 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:30:48,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-23 13:30:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:30:48,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 2981 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-23 13:30:48,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:30:49,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:30:49,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:30:49,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:30:49,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829661812] [2021-11-23 13:30:49,126 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:30:49,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546581804] [2021-11-23 13:30:49,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546581804] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:30:49,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:30:49,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 13:30:49,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319665785] [2021-11-23 13:30:49,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:30:49,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 13:30:49,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:30:49,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 13:30:49,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:30:49,129 INFO L87 Difference]: Start difference. First operand 2959 states and 3641 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:30:50,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:30:50,761 INFO L93 Difference]: Finished difference Result 8852 states and 10888 transitions. [2021-11-23 13:30:50,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 13:30:50,762 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2021-11-23 13:30:50,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:30:50,769 INFO L225 Difference]: With dead ends: 8852 [2021-11-23 13:30:50,769 INFO L226 Difference]: Without dead ends: 6048 [2021-11-23 13:30:50,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-11-23 13:30:50,776 INFO L933 BasicCegarLoop]: 3902 mSDtfsCounter, 3474 mSDsluCounter, 17697 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3474 SdHoareTripleChecker+Valid, 21599 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:30:50,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3474 Valid, 21599 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 13:30:50,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6048 states. [2021-11-23 13:30:51,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6048 to 2959. [2021-11-23 13:30:51,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2959 states, 2896 states have (on average 1.2537983425414365) internal successors, (3631), 2958 states have internal predecessors, (3631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:30:51,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2959 states to 2959 states and 3631 transitions. [2021-11-23 13:30:51,098 INFO L78 Accepts]: Start accepts. Automaton has 2959 states and 3631 transitions. Word has length 161 [2021-11-23 13:30:51,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:30:51,098 INFO L470 AbstractCegarLoop]: Abstraction has 2959 states and 3631 transitions. [2021-11-23 13:30:51,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:30:51,098 INFO L276 IsEmpty]: Start isEmpty. Operand 2959 states and 3631 transitions. [2021-11-23 13:30:51,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-23 13:30:51,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:30:51,100 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:30:51,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-23 13:30:51,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-23 13:30:51,301 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-23 13:30:51,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:30:51,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1103764393, now seen corresponding path program 1 times [2021-11-23 13:30:51,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:30:51,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383673342] [2021-11-23 13:30:51,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:30:51,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:30:51,369 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:30:51,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [801013442] [2021-11-23 13:30:51,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:30:51,370 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:30:51,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:30:51,371 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:30:51,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-23 13:30:52,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:30:52,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 2948 conjuncts, 107 conjunts are in the unsatisfiable core [2021-11-23 13:30:52,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:30:52,346 INFO L388 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 [2021-11-23 13:30:52,909 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-23 13:30:52,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-23 13:30:53,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:30:53,038 INFO L388 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 31 treesize of output 15 [2021-11-23 13:30:53,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:30:53,248 INFO L388 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 31 treesize of output 15 [2021-11-23 13:30:53,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:30:53,340 INFO L388 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 27 treesize of output 15 [2021-11-23 13:30:53,572 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-23 13:30:53,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2021-11-23 13:30:53,701 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-23 13:30:53,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-11-23 13:31:06,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:31:06,734 INFO L354 Elim1Store]: treesize reduction 33, result has 31.3 percent of original size [2021-11-23 13:31:06,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 48 [2021-11-23 13:31:13,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:31:13,966 INFO L354 Elim1Store]: treesize reduction 15, result has 44.4 percent of original size [2021-11-23 13:31:13,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 36 [2021-11-23 13:31:14,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:31:14,196 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:31:14,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:31:14,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383673342] [2021-11-23 13:31:14,197 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:31:14,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801013442] [2021-11-23 13:31:14,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801013442] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:31:14,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:31:14,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-23 13:31:14,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800021172] [2021-11-23 13:31:14,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:31:14,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-23 13:31:14,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:31:14,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-23 13:31:14,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=221, Unknown=4, NotChecked=0, Total=272 [2021-11-23 13:31:14,199 INFO L87 Difference]: Start difference. First operand 2959 states and 3631 transitions. Second operand has 17 states, 17 states have (on average 9.529411764705882) internal successors, (162), 17 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:31:29,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:31:29,629 INFO L93 Difference]: Finished difference Result 5840 states and 7169 transitions. [2021-11-23 13:31:29,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-23 13:31:29,629 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 9.529411764705882) internal successors, (162), 17 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2021-11-23 13:31:29,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:31:29,633 INFO L225 Difference]: With dead ends: 5840 [2021-11-23 13:31:29,633 INFO L226 Difference]: Without dead ends: 3141 [2021-11-23 13:31:29,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 22.5s TimeCoverageRelationStatistics Valid=81, Invalid=420, Unknown=5, NotChecked=0, Total=506 [2021-11-23 13:31:29,637 INFO L933 BasicCegarLoop]: 3002 mSDtfsCounter, 163 mSDsluCounter, 32812 mSDsCounter, 0 mSdLazyCounter, 3097 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 35814 SdHoareTripleChecker+Invalid, 8667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5556 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2021-11-23 13:31:29,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 35814 Invalid, 8667 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 3097 Invalid, 0 Unknown, 5556 Unchecked, 11.4s Time] [2021-11-23 13:31:29,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3141 states. [2021-11-23 13:31:29,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3141 to 3000. [2021-11-23 13:31:29,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3000 states, 2937 states have (on average 1.2536601974804222) internal successors, (3682), 2999 states have internal predecessors, (3682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:31:29,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3000 states to 3000 states and 3682 transitions. [2021-11-23 13:31:29,891 INFO L78 Accepts]: Start accepts. Automaton has 3000 states and 3682 transitions. Word has length 162 [2021-11-23 13:31:29,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:31:29,891 INFO L470 AbstractCegarLoop]: Abstraction has 3000 states and 3682 transitions. [2021-11-23 13:31:29,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.529411764705882) internal successors, (162), 17 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:31:29,892 INFO L276 IsEmpty]: Start isEmpty. Operand 3000 states and 3682 transitions. [2021-11-23 13:31:29,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-23 13:31:29,893 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:31:29,893 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:31:29,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-23 13:31:30,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:31:30,094 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 60 more)] === [2021-11-23 13:31:30,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:31:30,095 INFO L85 PathProgramCache]: Analyzing trace with hash -717901991, now seen corresponding path program 1 times [2021-11-23 13:31:30,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:31:30,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067909157] [2021-11-23 13:31:30,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:31:30,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:31:30,160 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:31:30,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1499683457] [2021-11-23 13:31:30,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:31:30,161 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:31:30,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:31:30,162 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:31:30,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1ce0568-ffb0-4d09-b985-d9bd8b719050/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-23 13:31:43,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:31:43,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 2945 conjuncts, 430 conjunts are in the unsatisfiable core [2021-11-23 13:31:43,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:31:43,125 INFO L388 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 [2021-11-23 13:31:43,320 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-23 13:31:43,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 20 [2021-11-23 13:31:43,761 INFO L354 Elim1Store]: treesize reduction 114, result has 17.4 percent of original size [2021-11-23 13:31:43,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 40 treesize of output 51 [2021-11-23 13:31:44,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2021-11-23 13:31:46,272 INFO L354 Elim1Store]: treesize reduction 86, result has 18.9 percent of original size [2021-11-23 13:31:46,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 170 treesize of output 180 [2021-11-23 13:31:50,072 INFO L354 Elim1Store]: treesize reduction 238, result has 15.0 percent of original size [2021-11-23 13:31:50,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 114 treesize of output 139 [2021-11-23 13:31:55,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:31:55,481 INFO L354 Elim1Store]: treesize reduction 92, result has 29.8 percent of original size [2021-11-23 13:31:55,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 110 treesize of output 130 [2021-11-23 13:32:31,221 INFO L354 Elim1Store]: treesize reduction 112, result has 28.7 percent of original size [2021-11-23 13:32:31,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 164 treesize of output 197 [2021-11-23 13:33:52,228 INFO L354 Elim1Store]: treesize reduction 178, result has 17.6 percent of original size [2021-11-23 13:33:52,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 117 treesize of output 141 [2021-11-23 13:36:35,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:36:35,692 INFO L354 Elim1Store]: treesize reduction 164, result has 27.1 percent of original size [2021-11-23 13:36:35,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 160 treesize of output 173 [2021-11-23 13:36:35,911 INFO L354 Elim1Store]: treesize reduction 228, result has 19.4 percent of original size [2021-11-23 13:36:35,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 27 case distinctions, treesize of input 173 treesize of output 212